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<meta name="keywords" content="C0560346, difficulty running, finding, autosomal dominant, autosomal recessive, birth defects, chromosomal disease, chromosome, clinical features, clinical findings, clinical genetics, clinical recommendations, clinvar, congenital chromosomal disease, consumer genetic resources, cytogenetic location, disease characteristics, disease definitions, disease descriptions, disease ontology, disease synonyms, disease vocabulary, dysmorphology, entrez, familial disease, gene, gene-disease relationship, genereviews, genetic disease, genetic disorder, genetic terminology, genetic testing registry, genetics home reference, genomic disease, gtr, hereditary disease, heritable disease, hpo, human phenotype ontology, inherited disease, management guidelines, maternal inheritance, medgen, medical genetics, medical subject headings, mesh, mitochondrial inheritance, mode of inheritance, national center for biotechnology information, national institutes of health, national library of medicine, ncbi, nih, nlm, omim, ordo, orphanet, paternal inheritance, phenome, position statements, professional practice guidelines, rare disease, reference sequence, refseq, snomed ct, syndrome, undiagnosed diseases, x-linked recessive" /><meta name="description" content="Reduced ability to run." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=108251
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-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Difficulty running</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>108251</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0560346</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div><table class="medgenTable"><tbody><tr><td><span class="bold">SNOMED CT: </span></td>
<td>Difficulty running (282479002)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0009046">HP:0009046</a></td></tr>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">Reduced ability to run. [from <a title="Human Phenotype Ontology" href="http://www.human-phenotype-ontology.org" class="defSource" target="_blank">HPO</a>]</div>
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<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0560346[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=108251">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet unavailable" title="ClinVar">V</span></span><span class="TLline">Difficulty running</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/867443" ref="tree=MeSH" title="MedGen record for Phenotypic abnormality">Phenotypic abnormality</a></span><ul><li><span class="TLline"><a href="/medgen/1763488" ref="tree=MeSH" title="MedGen record for Abnormality of the musculoskeletal system">Abnormality of the musculoskeletal system</a></span><ul><li><span class="TLline"><a href="/medgen/867380" ref="tree=MeSH" title="MedGen record for Abnormality of the musculature">Abnormality of the musculature</a></span><ul><li><span class="TLline"><a href="/medgen/868777" ref="tree=MeSH" title="MedGen record for Abnormal muscle physiology">Abnormal muscle physiology</a></span><ul><li><span class="TLline"><a href="/medgen/870898" ref="tree=MeSH" title="MedGen record for Functional motor deficit">Functional motor deficit</a></span><ul><li><span class="matched_ds">Difficulty running</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
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<div class="portlet mgSection" id="ID_112">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat">
<div class="divPopper rprt" id="rdis_98048"><div><strong>Emery-Dreifuss muscular dystrophy 2, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98048</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410190</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Emery-Dreifuss muscular dystrophy (EDMD) is characterized by the clinical triad of: joint contractures that begin in early childhood; slowly progressive muscle weakness and wasting initially in a humero-peroneal distribution that later extends to the scapular and pelvic girdle muscles; and cardiac involvement that may manifest as palpitations, presyncope and syncope, poor exercise tolerance, and congestive heart failure along with variable cardiac rhythm disturbances. Age of onset, severity, and progression of muscle and cardiac involvement demonstrate both inter- and intrafamilial variability. Clinical variability ranges from early onset with severe presentation in childhood to late onset with slow progression in adulthood. In general, joint contractures appear during the first two decades, followed by muscle weakness and wasting. Cardiac involvement usually occurs after the second decade and respiratory function may be impaired in some individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98048">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371441"><div><strong>Brody myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371441</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832918</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Brody disease (BROD) is an autosomal recessive skeletal muscle disorder characterized by exercise-induced muscle stiffness and cramps primarily affecting the arms, legs, and eyelids, although more generalized muscle involvement may also occur. Symptom onset is most often in the first decade, but many patients present and are diagnosed later in life. Skeletal muscle biopsy typically shows variation in fiber size, increased internal nuclei, and atrophy of type II muscle fibers. Rare patients have been reported to develop malignant hyperthermia after administration of anesthesia, suggesting that patients with the disorder should be tested. The disorder results from defective relaxation of fast-twitch (type II) skeletal muscle fibers due to defects in calcium homeostasis and reuptake in the muscle fiber (summary by Odermatt et al., 2000 and Molenaar et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371441">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_331805"><div><strong>Bethlem myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331805</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1834674</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bethlem myopathy-1 (BTHLM1) is a congenital muscular dystrophy characterized by distal joint laxity and a combination of distal and proximal joint contractures. The age at onset is highly variable, ranging from infancy to adulthood. Disease progression is slow and ambulation is usually retained into adulthood (summary by Butterfield et al., 2013).&#13; Genetic Heterogeneity of Bethlem Myopathy&#13; See Bethlem myopathy-1B (BTHLM1B; 620725), caused by mutation in the COL6A2 gene (120240) on chromosome 21q22; Bethlem myopathy-1C (620726), caused by mutation the COL6A3 gene (120250) on chromosome 2q37; and Bethlem myopathy-2 (BTHLM2; 616471), caused by mutation in the COL12A1 gene (120320) on chromosome 6q13-q14.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331805">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_373095"><div><strong>Nemaline myopathy 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373095</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836472</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nemaline myopathy-6 is an autosomal dominant skeletal muscle disorder characterized by childhood onset of slowly progressive proximal muscle weakness, exercise intolerance, and slow movements with stiff muscles. Patients are unable to run or correct themselves from falling over. Histopathologic changes seen on skeletal muscle biopsy include nemaline rods, cores devoid of oxidative enzyme activity, and predominance of hypertrophic type 1 fibers. There is no cardiac or respiratory involvement (summary by Sambuughin et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373095">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374264"><div><strong>X-linked myopathy with excessive autophagy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374264</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839615</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked myopathy with excessive autophagy (XMEA) is an X-linked recessive skeletal muscle disorder characterized by childhood onset of progressive muscle weakness and atrophy primarily affecting the proximal muscles. While onset is usually in childhood, it can range from infancy to adulthood. Many patients lose ambulation and become wheelchair-bound. Other organ systems, including the heart, are clinically unaffected. Muscle biopsy shows intracytoplasmic autophagic vacuoles with sarcolemmal features and a multilayered basal membrane (summary by Ramachandran et al., 2013; Kurashige et al., 2013, and Ruggieri et al., 2015).&#13; Danon disease (300257), caused by mutation in the LAMP2 gene (309060) on chromosome Xq24, is a distinct disorder with similar pathologic features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374264">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333983"><div><strong>Autosomal dominant limb-girdle muscular dystrophy type 1F</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333983</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842062</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant limb-girdle muscular dystrophy-2 (LGMDD2) is a myopathy characterized by proximal muscle weakness primarily affecting the lower limbs, but also affecting the upper limbs in most patients. Affected individuals also have distal muscle weakness of the hands and lower leg muscles. There is variability in presentation and progression. Some patients present in early childhood with mildly delayed walking and difficulty running and jumping, whereas others present as adults with mainly pelvic-girdle weakness. Patients with early onset tend to have a more severe disorder, and may develop contractures, loss of independent ambulation, and respiratory insufficiency. Muscle biopsy shows dystrophic changes with abnormal nuclei, rimmed vacuoles, and filamentous inclusions (summary by Melia et al., 2013).&#13; For a phenotypic description and a discussion of genetic heterogeneity of autosomal dominant limb-girdle muscular dystrophy, see LGMDD1 (603511).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333983">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374868"><div><strong>Myosin storage myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374868</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842160</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant myosin storage congenital myopathy-7A (CMYO7A) is a skeletal muscle disorder with wide phenotypic variability. The age at symptom onset can range from early childhood to late adulthood. Affected individuals have proximal muscle weakness affecting the upper and lower limbs and distal muscle weakness of the lower limbs, resulting in gait difficulties and scapular winging (scapuloperoneal myopathy). Additional features may include thin habitus, high-arched palate, foot drop, pes cavus, calf pseudohypertrophy, and decreased reflexes. The severity is also variable: some patients develop respiratory insufficiency, joint contractures, and scoliosis in the first decades, whereas others are clinically unaffected, but show subtle signs of the disorder on examination. Serum creatine kinase may be normal or elevated. The disease is usually slowly progressive and most patients remain ambulatory. Skeletal muscle biopsy can show different abnormalities, including hyaline bodies, type 1 fiber predominance, congenital fiber-type disproportion (CFTD), and nonspecific myopathic changes with myofibrillar disarray. Intrafamilial variability is common (Dye et al., 2006; Pegoraro et al., 2007; review by Tajsharghi and Oldfors, 2013).&#13; For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374868">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334023"><div><strong>Charcot-Marie-Tooth disease dominant intermediate C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334023</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842237</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare hereditary motor and sensory neuropathy characterized by intermediate motor median nerve conduction velocities (usually between 25 and 60 m/s). It presents with moderately severe, slowly progressive usual clinical features of Charcot-Marie-Tooth disease (muscle weakness and atrophy of the distal extremities, distal sensory loss, reduced or absent deep tendon reflexes, feet deformities, extensor digitorum brevis atrophy). Findings in nerve biopsies include age-dependent axonal degeneration, reduced number of large myelinated fibers, segmental remyelination, and no onion bulbs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334023">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340597"><div><strong>Congenital multicore myopathy with external ophthalmoplegia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340597</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850674</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myopathy-1B (CMYO1B) is an autosomal recessive disorder of skeletal muscle characterized by severe hypotonia and generalized muscle weakness apparent soon after birth or in early childhood with delayed motor development, generalized muscle weakness and atrophy, and difficulty walking or running. Affected individuals show proximal muscle weakness with axial and shoulder girdle involvement, external ophthalmoplegia, and bulbar weakness, often resulting in feeding difficulties and respiratory insufficiency. Orthopedic complications such as joint laxity, distal contractures, hip dislocation, cleft palate, and scoliosis are commonly observed. Serum creatine kinase is normal. The phenotype is variable in severity (Jungbluth et al., 2005; Bharucha-Goebel et al., 2013). Some patients show symptoms in utero, including reduced fetal movements, polyhydramnios, and intrauterine growth restriction. The most severely affected patients present in utero with fetal akinesia, arthrogryposis, and lung hypoplasia resulting in fetal or perinatal death (McKie et al., 2014). Skeletal muscle biopsy of patients with recessive RYR1 mutations can show variable features, including multiminicores (Ferreiro and Fardeau, 2002), central cores (Jungbluth et al., 2002), congenital fiber-type disproportion (CFTD) (Monnier et al., 2009), and centronuclear myopathy (Wilmshurst et al., 2010).&#13; For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340597">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338149"><div><strong>Autosomal recessive limb-girdle muscular dystrophy type 2B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338149</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850889</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dysferlinopathy includes a spectrum of muscle disease characterized by two major phenotypes: Miyoshi muscular dystrophy (MMD) and limb-girdle muscular dystrophy type 2B (LGMD2B); and two minor phenotypes: asymptomatic hyperCKemia and distal myopathy with anterior tibial onset (DMAT). MMD (median age of onset 19 years) is characterized by muscle weakness and atrophy, most marked in the distal parts of the legs, especially the gastrocnemius and soleus muscles. Over a period of years, the weakness and atrophy spread to the thighs and gluteal muscles. The forearms may become mildly atrophic with decrease in grip strength; the small muscles of the hands are spared. LGMD2B is characterized by early weakness and atrophy of the pelvic and shoulder girdle muscles in adolescence or young adulthood, with slow progression. Other phenotypes in this spectrum are scapuloperoneal syndrome and congenital muscular dystrophy. Asymptomatic hyperCKemia is characterized by marked elevation of serum CK concentration only. DMAT is characterized by early and predominant distal muscle weakness, particularly of the muscles of the anterior compartment of the legs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_339913"><div><strong>Neutral lipid storage myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339913</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853136</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neutral lipid storage disease with myopathy (NLSDM) is an autosomal recessive muscle disorder characterized by adult onset of slowly progressive proximal muscle weakness affecting the upper and lower limbs and associated with increased serum creatine kinase; distal muscle weakness may also occur. About half of patients develop cardiomyopathy later in the disease course. Other variable features include diabetes mellitus, hepatic steatosis, hypertriglyceridemia, and possibly sensorineural hearing loss. Leukocytes and muscle cells show cytoplasmic accumulation of triglycerides (summary by Reilich et al., 2011).&#13; Neutral lipid storage disease with myopathy belongs to a group of disorders termed neutral lipid storage disorders (NLSDs). These disorders are characterized by the presence of triglyceride-containing cytoplasmic droplets in leukocytes and in other tissues, including bone marrow, skin, and muscle. Chanarin-Dorfman syndrome (CDS; 275630) is defined as NLSD with ichthyosis (NLSDI). Patients with NLSDM present with myopathy but without ichthyosis (summary by Fischer et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339913">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_400895"><div><strong>Autosomal recessive limb-girdle muscular dystrophy type 2G</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>400895</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866008</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive limb-girdle muscular dystrophy-7 (LGMDR7), also known as LGMDR7, is a skeletal muscle disorder with age of onset in the first or second decade of life. Weakness of proximal and some distal muscles progresses to inability to walk by the third or fourth decade, although some individuals retain the ability to walk without support later. Heart involvement may be present. Creatine kinase levels are increased as much as 30-fold (summary by Moreira et al., 2000).&#13; For a general description and a discussion of genetic heterogeneity of autosomal recessive limb-girdle muscular dystrophy, see LGMDR1 (253600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/400895">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_435983"><div><strong>Early-onset myopathy with fatal cardiomyopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>435983</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673677</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Salih myopathy is characterized by muscle weakness (manifest during the neonatal period or in early infancy) and delayed motor development; children acquire independent walking between ages 20 months and four years. In the first decade of life, global motor performance is stable or tends to improve. Moderate joint and neck contractures and spinal rigidity may manifest in the first decade but become more obvious in the second decade. Scoliosis develops after age 11 years. Cardiac dysfunction manifests between ages five and 16 years, progresses rapidly, and leads to death between ages eight and 20 years, usually from heart rhythm disturbances.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/435983">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_413750"><div><strong>Miyoshi muscular dystrophy 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413750</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750076</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of ANO5 muscle disease is a continuum that ranges from asymptomatic hyperCKemia and exercise-induced myalgia to proximal and/or distal muscle weakness. The most typical presentation is limb-girdle muscular dystrophy type 2L (LGMD2L) with late-onset proximal lower-limb weakness in the fourth or fifth decade (range 15-70 years). Less common is Miyoshi-like disease (Miyoshi muscular dystrophy 3) with early-adult-onset calf distal myopathy (around age 20 years). Incidental hyperCKemia may be present even earlier. Initial symptoms are walking difficulties, reduced sports performance, and difficulties in standing on toes as well as nonspecific exercise myalgia and/or burning sensation in the calf muscles. Muscle weakness and atrophy are frequently asymmetric. Cardiac findings can include cardiomyopathy and arrhythmias and/or left ventricular dysfunction. Bulbar or respiratory symptoms have not been reported. Females have milder disease manifestations than males. Disease progression is slow in both the LGMD and distal forms; ambulation is preserved until very late in the disease course. Life span is normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413750">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481850"><div><strong>Charcot-Marie-Tooth disease axonal type 2O</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481850</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280220</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DYNC1H1-related disorders are primarily characterized by an axonal neuropathy with a wide phenotypic spectrum ranging from a neuromuscular-only phenotype (DYNC1H1-related neuromuscular disorder, or DYNC1H1-NMD) to phenotypes involving both the central nervous system and peripheral nervous system referred to collectively as DYNC1H1-related neurodevelopmental disorder (DYNC1H1-NDD). DYNC1H1-NMD manifestations are limited to the peripheral nervous system and characterized predominantly by motor neuropathy initially most pronounced in the lower limbs; muscle weakness and atrophy variably associated with foot deformities, contractures, and other skeletal involvement; and/or delayed motor milestones. DYNC1H1-NDD manifestations include motor axonal neuropathy and often global developmental delay / intellectual disability, epilepsy, neurobehavioral/psychiatric manifestations, and movement disorders with or without malformations of cortical development and/or microcephaly. In an individual with more significant central nervous system involvement, the motor axonal neuropathy may not be evident clinically and, thus, is only detected on further evaluation such as electrophysiologic testing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481850">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482309"><div><strong>MEGF10-related myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482309</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280679</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myopathy-10A (CMYO10A) is a severe autosomal recessive skeletal muscle disorder characterized by generalized hypotonia, respiratory insufficiency, and poor feeding apparent from birth. Decreased fetal movements may be observed. More variable features include high-arched palate, distal joint contractures, foot deformities, scoliosis, areflexia, and dysphagia. Many patients show eventration of the diaphragm. Affected individuals become ventilator-dependent in the first months or years of life and never achieve walking; many die in childhood (Logan et al., 2011).&#13; Patients with more damaging mutations in the MEGF10 gene, including nonsense or frameshift null mutations, show the more severe phenotype (CMYO10A), whereas those with missense mutations affecting conserved cysteine residues in the EGF-like domain show the less severe phenotype with later onset of respiratory failure and minicores on muscle biopsy (CMYO10B) (Croci et al., 2022).&#13; For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482309">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_762202"><div><strong>Peroxisome biogenesis disorder 5B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>762202</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3542026</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The overlapping phenotypes of neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease (IRD) represent the milder manifestations of the Zellweger syndrome spectrum (ZSS) of peroxisome biogenesis disorders. The clinical course of patients with the NALD and IRD presentation is variable and may include developmental delay, hypotonia, liver dysfunction, sensorineural hearing loss, retinal dystrophy, and visual impairment. Children with the NALD presentation may reach their teens, and those with the IRD presentation may reach adulthood (summary by Waterham and Ebberink, 2012).&#13; For a complete phenotypic description and a discussion of genetic heterogeneity of PBD(NALD/IRD), see 601539.&#13; Individuals with mutations in the PEX2 gene have cells of complementation group 5 (CG5, equivalent to CG10 and CGF). For information on the history of PBD complementation groups, see 214100.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/762202">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815069"><div><strong>Congenital myasthenic syndrome 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815069</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3808739</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myasthenic syndromes are genetic disorders of the neuromuscular junction (NMJ) that are classified by the site of the transmission defect: presynaptic, synaptic, and postsynaptic. CMS8 is an autosomal recessive disorder characterized by prominent defects of both the pre- and postsynaptic regions. Affected individuals have onset of muscle weakness in early childhood; the severity of the weakness and muscles affected is variable (summary by Maselli et al., 2012).&#13; For a discussion of genetic heterogeneity of CMS, see CMS1A (601462).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815069">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816331"><div><strong>Growth and developmental delay-hypotonia-vision impairment-lactic acidosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816331</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810001</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-18 (COXPD18) is an autosomal recessive disorder of mitochondrial function characterized by intrauterine growth retardation, hypotonia, visual impairment, speech delay, and lactic acidosis associated with decreased mitochondrial respiratory chain activity. Affected patients may also show hematologic abnormalities, mainly macrocytic anemia (summary by Hildick-Smith et al., 2013).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816331">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816615"><div><strong>Proximal myopathy with extrapyramidal signs</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816615</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810285</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myopathy with extrapyramidal signs is an autosomal recessive disorder characterized by early childhood onset of proximal muscle weakness and learning disabilities. While the muscle weakness is static, most patients develop progressive extrapyramidal signs that may become disabling (summary by Logan et al., 2014). Brain MRI in 1 patient showed congenital malformations, including polymicrogyria and cerebellar dysplasia (Wilton et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816615">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854832"><div><strong>Neuronopathy, distal hereditary motor, type 2D</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854832</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3888271</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant distal hereditary motor neuronopathy-6 (HMND6) is a neurologic disorder characterized by onset of slowly progressive distal lower limb weakness and atrophy between the second and fourth decades of life. Weakness usually begins in the calf muscles and later involves more proximal muscles. The severity is variable, and some patients have difficulty walking or running. Most also have upper limb involvement, particularly of the triceps and intrinsic hand muscles. Some patients may lose independent ambulation later in the disease course. Sensory impairment is typically not present, and cognition and bulbar function are normal (summary by Sumner et al., 2013).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of autosomal dominant distal HMN (dHMN), see HMND1 (182960).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854832">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_860163"><div><strong>Myopathy, tubular aggregate, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>860163</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4011726</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tubular aggregates in muscle, first described by Engel (1964), are structures of variable appearance consisting of an outer tubule containing either one or more microtubule-like structures or amorphous material. They are a nonspecific pathologic finding that may occur in a variety of circumstances, including alcohol- and drug-induced myopathies, exercise-induced cramps or muscle weakness, and inherited myopathies. Tubular aggregates are derived from the sarcoplasmic reticulum (Salviati et al., 1985) and are believed to represent an adaptive mechanism aimed at regulating an increased intracellular level of calcium in order to prevent the muscle fibers from hypercontraction and necrosis (Martin et al., 1997; Muller et al., 2001).&#13; Genetic Heterogeneity of Tubular Aggregate Myopathy&#13; See also TAM2 (615883), caused by mutation in the ORAI1 gene (610277) on chromosome 12q24.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/860163">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_904593"><div><strong>Myopathy, reducing body, X-linked, childhood-onset</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>904593</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225159</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Reducing-body myopathy (RBM) is a rare myopathy characterized pathologically by the presence of intracytoplasmic inclusion bodies strongly stained by menadione-linked alpha-glycerophosphate dehydrogenase (MAG) in the absence of substrate, alpha-glycerophosphate. The term 'reducing body' refers to the reducing activity of the inclusions to nitroblue tetrazolium (NBT) in the absence of substrate. This condition is also commonly associated with rimmed vacuoles and cytoplasmic bodies. The clinical features of RBM are variable; a severe form has onset in infancy or early childhood and results in severe disability or early death (RBMX1A; 300717), and a less severe form has onset in late childhood or adulthood (RBMX1B) (summary by Liewluck et al., 2007 and Shalaby et al., 2009).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/904593">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_907426"><div><strong>Bethlem myopathy 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>907426</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225313</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bethlem myopathy-2 (BTHLM2) is characterized by congenital hypotonia and myopathy. Motor development is delayed, but muscle strength improves with age, and patients are able to achieve ambulation. Proximal joint contractures that improve over time, as well as joint hyperlaxity, are also present. Muscle biopsy shows mild variability in fiber diameter, without degeneration or regeneration (Zou et al., 2014; Hicks et al., 2014).&#13; For a discussion of genetic heterogeneity of Bethlem myopathy, see BTHLM1 (158810).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/907426">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_902189"><div><strong>Congenital myasthenic syndrome 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>902189</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225367</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myasthenic syndrome associated with AChR deficiency is a disorder of the postsynaptic neuromuscular junction (NMJ) clinically characterized by early-onset muscle weakness with variable severity. Electrophysiologic studies show low amplitude of the miniature endplate potential (MEPP) and current (MEPC) resulting from deficiency of AChR at the endplate. Treatment with cholinesterase inhibitors or amifampridine may be helpful (summary by Engel et al., 2015).&#13; For a discussion of genetic heterogeneity of CMS, see CMS1A (601462).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/902189">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934612"><div><strong>Myofibrillar myopathy 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934612</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310645</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myofibrillar myopathy-8 (MFM8) is an autosomal recessive myopathy characterized by slowly progressive proximal muscle weakness and atrophy affecting the upper and lower limbs, resulting in increased falls, gait problems, difficulty running or climbing stairs, and upper limb weakness or scapular winging. Some patients develop distal muscle weakness and atrophy. The phenotype may also be consistent with a clinical diagnosis of limb-girdle muscular dystrophy (LGMD). Age at symptom onset ranges from infancy to adulthood. Ambulation is generally preserved and cardiac involvement is rare, but respiratory compromise with decreased forced vital capacity often occurs. Muscle biopsy shows a mix of myopathic features, including myofibrillar inclusions and sarcomeric disorganization; some patients have been reported to have dystrophic changes on muscle biopsy (O'Grady et al., 2016; Daimaguler et al., 2021). There is significant phenotypic variation, even in patients with the same mutation, which must be taken into account when counseling affecting individuals (Woods et al., 2020).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of myofibrillar myopathy, see MFM1 (601419).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934612">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648441"><div><strong>Autosomal dominant limb-girdle muscular dystrophy type 1D (DNAJB6)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648441</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4721885</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant limb-girdle muscular dystrophy is characterized by proximal and/or distal muscle weakness and atrophy. The age at onset is variable and can range from the first to the sixth decade, although later onset is less common. Most patients present with proximal muscle weakness that progresses to distal involvement, but some can present with distal impairment. The severity is variable: patients with a more severe phenotype can lose ambulation after several decades and have facial weakness with bulbar and respiratory involvement. Muscle biopsy shows dystrophic changes with protein aggregates, myofibrillar degeneration, and rimmed vacuoles (summary by Ruggieri et al., 2015).&#13; Genetic Heterogeneity of Autosomal Dominant Limb-Girdle Muscular Dystrophy&#13; Other forms of autosomal dominant LGMD include LGMDD2 (608423), previously LGMD1F, caused by mutation in the TNPO3 gene (610032) on chromosome 7q32; LGMDD3 (609115), previously LGMD1G, caused by mutation in the HNRNPDL gene (607137) on chromosome 4q21; and LGMDD4 (618129), previously LGMD1I, caused by mutation in the CAPN3 gene (114240) on chromosome 15q15.&#13; For a discussion of autosomal recessive LGMD, see 253600.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648441">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1669929"><div><strong>Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1669929</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4747715</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SMALED2A is an autosomal dominant form of spinal muscular atrophy characterized by early childhood onset of muscle weakness and atrophy predominantly affecting the proximal and distal muscles of the lower extremity, although some patients may show upper extremity involvement. The disorder results in delayed walking, waddling gait, difficulty walking, and loss of distal reflexes. Some patients may have foot deformities or hyperlordosis, and some show mild upper motor signs, such as spasticity. Sensation, bulbar function, and cognitive function are preserved. The disorder shows very slow progression throughout life (summary by Oates et al., 2013).&#13; For discussion of genetic heterogeneity of lower extremity-predominant spinal muscular atrophy, see SMALED1 (158600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1669929">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648462"><div><strong>Muscular dystrophy, limb-girdle, autosomal recessive 23</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648462</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748327</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The clinical manifestations of LAMA2 muscular dystrophy (LAMA2-MD) comprise a continuous spectrum ranging from severe congenital muscular dystrophy type 1A (MDC1A) to milder late-onset LAMA2-MD. MDC1A is typically characterized by neonatal profound hypotonia, poor spontaneous movements, and respiratory failure. Failure to thrive, gastroesophageal reflux, aspiration, and recurrent chest infections necessitating frequent hospitalizations are common. As disease progresses, facial muscle weakness, temporomandibular joint contractures, and macroglossia may further impair feeding and can affect speech. In late-onset LAMA2-MD onset of manifestations range from early childhood to adulthood. Affected individuals may show muscle hypertrophy and develop a rigid spine syndrome with joint contractures, usually most prominent in the elbows. Progressive respiratory insufficiency, scoliosis, and cardiomyopathy can occur.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648462">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1718449"><div><strong>Muscular dystrophy, limb-girdle, autosomal recessive 26</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1718449</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394268</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive limb-girdle muscular dystrophy-26 (LGMDR26) is a muscle disorder characterized by adult-onset weakness that primarily affects the proximal muscles of the lower limbs. The disorder is slowly progressive, with later involvement of the upper limbs and fatty replacement of muscle tissue apparent on MRI. Some patients may have calf hypertrophy. Serum creatine kinase is significantly elevated, and skeletal muscle biopsy shows typical dystrophic features with normal ultrastructural findings. There is no cardiac or respiratory involvement (summary by Vissing et al., 2019).&#13; For a discussion of genetic heterogeneity of autosomal recessive limb-girdle muscular dystrophy, see LGMDR1 (253600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1718449">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1830501"><div><strong>Autosomal dominant childhood-onset proximal spinal muscular atrophy without contractures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1830501</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5780022</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DYNC1H1-related disorders are primarily characterized by an axonal neuropathy with a wide phenotypic spectrum ranging from a neuromuscular-only phenotype (DYNC1H1-related neuromuscular disorder, or DYNC1H1-NMD) to phenotypes involving both the central nervous system and peripheral nervous system referred to collectively as DYNC1H1-related neurodevelopmental disorder (DYNC1H1-NDD). DYNC1H1-NMD manifestations are limited to the peripheral nervous system and characterized predominantly by motor neuropathy initially most pronounced in the lower limbs; muscle weakness and atrophy variably associated with foot deformities, contractures, and other skeletal involvement; and/or delayed motor milestones. DYNC1H1-NDD manifestations include motor axonal neuropathy and often global developmental delay / intellectual disability, epilepsy, neurobehavioral/psychiatric manifestations, and movement disorders with or without malformations of cortical development and/or microcephaly. In an individual with more significant central nervous system involvement, the motor axonal neuropathy may not be evident clinically and, thus, is only detected on further evaluation such as electrophysiologic testing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1830501">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841029"><div><strong>Congenital myopathy 20</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841029</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830393</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myopathy-20 (CMYO20) is an autosomal recessive neuromuscular disorder that shows wide phenotypic variability. Some patients present in early childhood with proximal muscle weakness affecting the lower and upper limbs resulting in difficulties running and climbing, whereas others present soon after birth with congenital limb or distal contractures. Additional features may include dysmorphic facial features and global developmental delay. Skeletal muscle biopsy may show nemaline rods (Nilipour et al., 2018; Pehlivan et al., 2019).&#13; For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841029">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841185"><div><strong>Nemaline myopathy 5C, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841185</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830549</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant nemaline myopathy-5C (NEM5C) is a relatively mild skeletal muscle disorder with wide clinical variability, even within families. Affected individuals develop symptoms of muscle weakness in the first or second decades; those with earlier onset tend to have a more severe disease course. Features include difficulty walking on the heels, waddling gait, proximal muscle weakness affecting the upper and lower limbs, and Gowers sign. Additional features may include myopathic facies, high-arched palate, scoliosis or kyphosis, and ankle weakness. Patients remain ambulatory into late adulthood. Skeletal muscle biopsy shows hypotrophy of type 1 fibers, hypertrophy of type 2 fibers, fiber size variation, and myofibrillar disorganization. Nemaline rods in type 1 fibers are often observed, but are not always present (Konersman et al., 2017; Holling et al., 2022).&#13; For a discussion of genetic heterogeneity of nemaline myopathy, see NEM2 (256030).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841185">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1844131"><div><strong>Spastic paraplegia 72b, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1844131</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882720</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary spastic paraplegia-72B (SPG72B) is a pure form of spastic paraplegia with onset of difficulty walking and stiff legs associated with hyperreflexia and extensor plantar responses in early childhood. The disorder is slowly progressive, and some patients develop the need for assistance in walking. Cognition, speech, and ocular function are normal (summary by Esteves et al., 2014).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1844131">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1861320"><div><strong>Muscular dystrophy, limb-girdle, autosomal recessive 29</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1861320</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935611</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive limb-girdle muscular dystrophy-29 (LGMDR29) is a neuromuscular disorder characterized by onset of muscle weakness predominantly affecting the proximal lower limbs, although upper limb involvement also occurs. The disorder, which causes walking difficulties, is progressive and may result in loss of ambulation. Additional features include joint contractures, spinal abnormalities, and significant restrictive ventilatory dysfunction. Muscle biopsy shows dystrophic and myofibrillar changes, and serum creatine kinase is increased. Rare individuals have been reported to have central nervous system involvement, including cataracts, developmental delay, and brain imaging abnormalities (Nashabat et al., 2024 and Iruzubieta et al., 2024).&#13; For a discussion of genetic heterogeneity of autosomal recessive limb- girdle muscular dystrophy, see LGMDR1 (253600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1861320">Condition Record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1669929" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1830501" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant childhood-onset proximal spinal muscular atrophy without contractures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648441" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant limb-girdle muscular dystrophy type 1D (DNAJB6)</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333983" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant limb-girdle muscular dystrophy type 1F</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338149" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive limb-girdle muscular dystrophy type 2B</a></div><div class="jig-moreless" data-jigconfig="class: 'moveDown', moreText: 'See full list (35)', lessText: 'Show less', nodeBefore: 0"><span id="clinMore">
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_400895" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive limb-girdle muscular dystrophy type 2G</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_331805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bethlem myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_907426" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bethlem myopathy 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_371441" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brody myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481850" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease axonal type 2O</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334023" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease dominant intermediate C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340597" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital multicore myopathy with external ophthalmoplegia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_902189" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myasthenic syndrome 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815069" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myasthenic syndrome 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841029" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myopathy 20</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_435983" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Early-onset myopathy with fatal cardiomyopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98048" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Emery-Dreifuss muscular dystrophy 2, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816331" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Growth and developmental delay-hypotonia-vision impairment-lactic acidosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482309" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MEGF10-related myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_413750" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Miyoshi muscular dystrophy 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648462" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy, limb-girdle, autosomal recessive 23</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1718449" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy, limb-girdle, autosomal recessive 26</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1861320" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy, limb-girdle, autosomal recessive 29</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934612" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myofibrillar myopathy 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_904593" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myopathy, reducing body, X-linked, childhood-onset</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_860163" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myopathy, tubular aggregate, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374868" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myosin storage myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841185" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nemaline myopathy 5C, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373095" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nemaline myopathy 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854832" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronopathy, distal hereditary motor, type 2D</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_339913" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neutral lipid storage myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_762202" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 5B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816615" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Proximal myopathy with extrapyramidal signs</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1844131" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 72b, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374264" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked myopathy with excessive autophagy</a></div></span></div></div>
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<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/38958840">Eteplirsen Treatment for Duchenne Muscular Dystrophy: A Qualitative Patient Experience Study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Iff J,
Carmichael C,
McKee S,
Sehinovych I,
McNeill C,
Tesi-Rocha C,
Henricson E,
Muntoni F,
Kitchen H</span><br />
<span class="medgenPMjournal">Adv Ther</span>
2024 Aug;41(8):3278-3298.
Epub 2024 Jul 3
doi: 10.1007/s12325-024-02915-9.
<span class="bold">PMID: </span><a href="/pubmed/38958840" target="_blank">38958840</a><a href="/pmc/articles/PMC11263411" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35809035">A systematic scoping review of primary health care service outreach for homeless populations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kopanitsa V,
McWilliams S,
Leung R,
Schischa B,
Sarela S,
Perelmuter S,
Sheeran E,
d'Algue LM,
Tan GC,
Rosenthal DM</span><br />
<span class="medgenPMjournal">Fam Pract</span>
2023 Feb 9;40(1):138-151.
doi: 10.1093/fampra/cmac075.
<span class="bold">PMID: </span><a href="/pubmed/35809035" target="_blank">35809035</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31125012">Newborn screening in Nigeria: Associating the screening of congenital hypothyroidism and sickle cell disease can be a winning choice?</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yarhere IE,
Jaja T,
Briggs D,
Iughetti L</span><br />
<span class="medgenPMjournal">Acta Biomed</span>
2019 May 23;90(2):316-320.
doi: 10.23750/abm.v90i2.8485.
<span class="bold">PMID: </span><a href="/pubmed/31125012" target="_blank">31125012</a><a href="/pmc/articles/PMC6776226" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(difficulty%20running)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (21)</a></div></div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/37130811">Controlled Ankle Movement (CAM) Boot Provides Improved Outcomes With Lower Complications Than Short Leg Walking Cast in Low-energy Pediatric Lateral Ankle Injuries: A Prospective, Randomized Study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Beck JJ,
Kang V,
Bennett A,
Bloom S,
Jackson NJ</span><br />
<span class="medgenPMjournal">J Pediatr Orthop</span>
2023 Aug 1;43(7):418-423.
Epub 2023 May 1
doi: 10.1097/BPO.0000000000002425.
<span class="bold">PMID: </span><a href="/pubmed/37130811" target="_blank">37130811</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27311339">Mental distress and functional health in the United States.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Charara R,
El Bcheraoui C,
Kravitz H,
Dhingra SS,
Mokdad AH</span><br />
<span class="medgenPMjournal">Prev Med</span>
2016 Aug;89:292-300.
Epub 2016 Jun 14
doi: 10.1016/j.ypmed.2016.06.011.
<span class="bold">PMID: </span><a href="/pubmed/27311339" target="_blank">27311339</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21035867">Kjellin syndrome: long-term neuro-ophthalmologic follow-up and novel mutations in the SPG11 gene.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Puech B,
Lacour A,
Stevanin G,
Sautiere BG,
Devos D,
Depienne C,
Denis E,
Mundwiller E,
Ferriby D,
Vermersch P,
Defoort-Dhellemmes S</span><br />
<span class="medgenPMjournal">Ophthalmology</span>
2011 Mar;118(3):564-73.
Epub 2010 Oct 29
doi: 10.1016/j.ophtha.2010.07.024.
<span class="bold">PMID: </span><a href="/pubmed/21035867" target="_blank">21035867</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17805110">Reduction mammaplasty: a significant improvement at any size.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Spector JA,
Karp NS</span><br />
<span class="medgenPMjournal">Plast Reconstr Surg</span>
2007 Sep 15;120(4):845-850.
doi: 10.1097/01.prs.0000277660.49802.76.
<span class="bold">PMID: </span><a href="/pubmed/17805110" target="_blank">17805110</a></div>
<div class="nl"><a target="_blank" href="/pubmed/10488868">Physeal stapling for idiopathic genu valgum.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Stevens PM,
Maguire M,
Dales MD,
Robins AJ</span><br />
<span class="medgenPMjournal">J Pediatr Orthop</span>
1999 Sep-Oct;19(5):645-9.
<span class="bold">PMID: </span><a href="/pubmed/10488868" target="_blank">10488868</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Difficulty%20running%22%20AND%20Etiology%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (8)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/38373275">Brody Disease, an Early-Onset Myopathy With Delayed Relaxation and Abnormal Gait: A Case Series of 9 Children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Verhoeven JI,
Kramer J,
Seeger J,
Molenaar JP,
Braakman H,
Kamsteeg EJ,
Rodenburg RJ,
Kusters B,
Koudijs S,
Van Engelen BG,
Erasmus CE,
Voermans NC</span><br />
<span class="medgenPMjournal">Neurology</span>
2024 Mar 12;102(5):e209164.
Epub 2024 Feb 19
doi: 10.1212/WNL.0000000000209164.
<span class="bold">PMID: </span><a href="/pubmed/38373275" target="_blank">38373275</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31833466">Case Report: Cognitive Impairment without Clinical Spinal Disease May Be the First Sign of HTLV-1 Neurological Alteration.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Castro ARR,
Labanca L,
Resende LM,
Utsch-Gonçalves D</span><br />
<span class="medgenPMjournal">Am J Trop Med Hyg</span>
2020 Feb;102(2):366-369.
doi: 10.4269/ajtmh.19-0218.
<span class="bold">PMID: </span><a href="/pubmed/31833466" target="_blank">31833466</a><a href="/pmc/articles/PMC7008323" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29731279">A novel ACTA1 mutation causing progressive facioscapuloperoneal myopathy in an adult.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kao JC,
Liewluck T,
Milone M</span><br />
<span class="medgenPMjournal">J Clin Neurosci</span>
2018 Jul;53:261-262.
Epub 2018 May 3
doi: 10.1016/j.jocn.2018.04.044.
<span class="bold">PMID: </span><a href="/pubmed/29731279" target="_blank">29731279</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21388871">Clinical manifestations in individuals with recent diagnosis of HTLV type I infection.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Poetker SK,
Porto AF,
Giozza SP,
Muniz AL,
Caskey MF,
Carvalho EM,
Glesby MJ</span><br />
<span class="medgenPMjournal">J Clin Virol</span>
2011 May;51(1):54-8.
Epub 2011 Mar 8
doi: 10.1016/j.jcv.2011.02.004.
<span class="bold">PMID: </span><a href="/pubmed/21388871" target="_blank">21388871</a><a href="/pmc/articles/PMC3074002" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21035867">Kjellin syndrome: long-term neuro-ophthalmologic follow-up and novel mutations in the SPG11 gene.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Puech B,
Lacour A,
Stevanin G,
Sautiere BG,
Devos D,
Depienne C,
Denis E,
Mundwiller E,
Ferriby D,
Vermersch P,
Defoort-Dhellemmes S</span><br />
<span class="medgenPMjournal">Ophthalmology</span>
2011 Mar;118(3):564-73.
Epub 2010 Oct 29
doi: 10.1016/j.ophtha.2010.07.024.
<span class="bold">PMID: </span><a href="/pubmed/21035867" target="_blank">21035867</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Difficulty%20running%22%20AND%20Diagnosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (6)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/37130811">Controlled Ankle Movement (CAM) Boot Provides Improved Outcomes With Lower Complications Than Short Leg Walking Cast in Low-energy Pediatric Lateral Ankle Injuries: A Prospective, Randomized Study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Beck JJ,
Kang V,
Bennett A,
Bloom S,
Jackson NJ</span><br />
<span class="medgenPMjournal">J Pediatr Orthop</span>
2023 Aug 1;43(7):418-423.
Epub 2023 May 1
doi: 10.1097/BPO.0000000000002425.
<span class="bold">PMID: </span><a href="/pubmed/37130811" target="_blank">37130811</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21131455">Patient satisfaction with vertical reduction mammaplasty: Part I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Adham M,
Sawan K,
Lovelace C,
Zakhary J,
Adham C</span><br />
<span class="medgenPMjournal">Aesthet Surg J</span>
2010 Nov-Dec;30(6):814-20.
doi: 10.1177/1090820X10386900.
<span class="bold">PMID: </span><a href="/pubmed/21131455" target="_blank">21131455</a></div>
<div class="nl"><a target="_blank" href="/pubmed/1358398">Control of simultaneous movements distinguishes depressive motor retardation from Parkinson's disease and neuroleptic parkinsonism.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Fleminger S</span><br />
<span class="medgenPMjournal">Brain</span>
1992 Oct;115 ( Pt 5):1459-80.
doi: 10.1093/brain/115.5.1459.
<span class="bold">PMID: </span><a href="/pubmed/1358398" target="_blank">1358398</a></div>
<div class="nl"><a target="_blank" href="/pubmed/3859261">Sheath impaction as a cause of defective intra-aortic balloon pump action in man.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">O'Rourke MF,
Johnston R,
Keogh A</span><br />
<span class="medgenPMjournal">Aust N Z J Med</span>
1985 Feb;15(1):33-7.
doi: 10.1111/j.1445-5994.1985.tb02728.x.
<span class="bold">PMID: </span><a href="/pubmed/3859261" target="_blank">3859261</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Difficulty%20running%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (4)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/21035867">Kjellin syndrome: long-term neuro-ophthalmologic follow-up and novel mutations in the SPG11 gene.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Puech B,
Lacour A,
Stevanin G,
Sautiere BG,
Devos D,
Depienne C,
Denis E,
Mundwiller E,
Ferriby D,
Vermersch P,
Defoort-Dhellemmes S</span><br />
<span class="medgenPMjournal">Ophthalmology</span>
2011 Mar;118(3):564-73.
Epub 2010 Oct 29
doi: 10.1016/j.ophtha.2010.07.024.
<span class="bold">PMID: </span><a href="/pubmed/21035867" target="_blank">21035867</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17805110">Reduction mammaplasty: a significant improvement at any size.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Spector JA,
Karp NS</span><br />
<span class="medgenPMjournal">Plast Reconstr Surg</span>
2007 Sep 15;120(4):845-850.
doi: 10.1097/01.prs.0000277660.49802.76.
<span class="bold">PMID: </span><a href="/pubmed/17805110" target="_blank">17805110</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Difficulty%20running%22%20AND%20Prognosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (2)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/37130811">Controlled Ankle Movement (CAM) Boot Provides Improved Outcomes With Lower Complications Than Short Leg Walking Cast in Low-energy Pediatric Lateral Ankle Injuries: A Prospective, Randomized Study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Beck JJ,
Kang V,
Bennett A,
Bloom S,
Jackson NJ</span><br />
<span class="medgenPMjournal">J Pediatr Orthop</span>
2023 Aug 1;43(7):418-423.
Epub 2023 May 1
doi: 10.1097/BPO.0000000000002425.
<span class="bold">PMID: </span><a href="/pubmed/37130811" target="_blank">37130811</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21035867">Kjellin syndrome: long-term neuro-ophthalmologic follow-up and novel mutations in the SPG11 gene.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Puech B,
Lacour A,
Stevanin G,
Sautiere BG,
Devos D,
Depienne C,
Denis E,
Mundwiller E,
Ferriby D,
Vermersch P,
Defoort-Dhellemmes S</span><br />
<span class="medgenPMjournal">Ophthalmology</span>
2011 Mar;118(3):564-73.
Epub 2010 Oct 29
doi: 10.1016/j.ophtha.2010.07.024.
<span class="bold">PMID: </span><a href="/pubmed/21035867" target="_blank">21035867</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21131455">Patient satisfaction with vertical reduction mammaplasty: Part I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Adham M,
Sawan K,
Lovelace C,
Zakhary J,
Adham C</span><br />
<span class="medgenPMjournal">Aesthet Surg J</span>
2010 Nov-Dec;30(6):814-20.
doi: 10.1177/1090820X10386900.
<span class="bold">PMID: </span><a href="/pubmed/21131455" target="_blank">21131455</a></div>
<div class="nl"><a target="_blank" href="/pubmed/15993324">Rapidly progressive spinal muscular atrophy in an ambulatory 2-year-old male.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lin J,
da Silva RJ,
Grillo E</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2005 Jul;33(1):72-4.
Epub 2005 Apr 13
doi: 10.1016/j.pediatrneurol.2004.12.013.
<span class="bold">PMID: </span><a href="/pubmed/15993324" target="_blank">15993324</a></div>
<div class="nl"><a target="_blank" href="/pubmed/1358398">Control of simultaneous movements distinguishes depressive motor retardation from Parkinson's disease and neuroleptic parkinsonism.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Fleminger S</span><br />
<span class="medgenPMjournal">Brain</span>
1992 Oct;115 ( Pt 5):1459-80.
doi: 10.1093/brain/115.5.1459.
<span class="bold">PMID: </span><a href="/pubmed/1358398" target="_blank">1358398</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Difficulty%20running%22%20AND%20Clinical%20prediction%20guides%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (5)</a></div></div>
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<div class="supplemental col three_col last">
<h2 class="offscreen_noflow">Supplemental Content</h2>
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<div class="portlet mgSection" id="ID_113">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Table_of_contents">Table of contents</h1><a sid="113" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul id="my-toc"></ul></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C0560346%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (6)</a></li>
<li><a href="/gtr/tests?term=C0560346%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (6)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C0560346%5bDISCUI%5d" target="_blank">See all (6)</a></total></li>
</ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_resources">Clinical resources</h1><a sid="119" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="https://clinicaltrials.gov/search?cond=Difficulty%20running" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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