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<!--
UID=207266
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-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Sensorimotor neuropathy</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>207266</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.">C1112256</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Peripheral sensorimotor neuropathy; Sensorimotor peripheral neuropathy</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:0007141">HP:0007141</a></td></tr>
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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=C1112256[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=207266">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 Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=207266" ref="ncbi_uid=207266">V</a></span></span><span class="TLline">Sensorimotor neuropathy</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/871309" ref="tree=MeSH" title="MedGen record for Abnormality of prenatal development or birth">Abnormality of prenatal development or birth</a></span><ul><li><span class="TLline"><a href="/medgen/1254" ref="tree=MeSH" title="MedGen record for Fetal anomaly">Fetal anomaly</a></span><ul><li><span class="TLline"><a href="/medgen/474891" ref="tree=MeSH" title="MedGen record for Congenital Systemic Disorder">Congenital Systemic Disorder</a></span><ul><li><span class="TLline"><a href="/medgen/105425" ref="tree=MeSH" title="MedGen record for Abnormality of the nervous system">Abnormality of the nervous system</a></span><ul><li><span class="TLline"><a href="/medgen/868417" ref="tree=MeSH" title="MedGen record for Abnormal nervous system physiology">Abnormal nervous system physiology</a></span><ul><li><span class="TLline"><a href="/medgen/18386" ref="tree=MeSH" title="MedGen record for Peripheral neuropathy">Peripheral neuropathy</a></span><ul><li><span class="matched_ds">Sensorimotor neuropathy</span></li></ul></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_44131"><div><strong>Galactosylceramide beta-galactosidase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>44131</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.">C0023521</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Krabbe disease comprises a spectrum ranging from infantile-onset disease (i.e., onset of extreme irritability, spasticity, and developmental delay before age 12 months) to later-onset disease (i.e., onset of manifestations after age 12 months and as late as the seventh decade). Although historically 85%-90% of symptomatic individuals with Krabbe disease diagnosed by enzyme activity alone have infantile-onset Krabbe disease and 10%-15% have later-onset Krabbe disease, the experience with newborn screening (NBS) suggests that the proportion of individuals with possible later-onset Krabbe disease is higher than previously thought. Infantile-onset Krabbe disease is characterized by normal development in the first few months followed by rapid severe neurologic deterioration; the average age of death is 24 months (range 8 months to 9 years). Later-onset Krabbe disease is much more variable in its presentation and disease course.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/44131">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_11161"><div><strong>Phytanic acid storage disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>11161</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.">C0034960</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Adult Refsum disease (ARD is associated with elevated plasma phytanic acid levels, late childhood-onset (or later) retinitis pigmentosa, and variable combinations of anosmia, polyneuropathy, deafness, ataxia, and ichthyosis. Onset of symptoms ranges from age seven months to older than age 50 years. Cardiac arrhythmia and heart failure caused by cardiomyopathy are potentially severe health problems that develop later in life.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/11161">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_66358"><div><strong>Abortive cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66358</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.">C0221061</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">'Behr syndrome' is a clinical term that refers to the constellation of early-onset optic atrophy accompanied by neurologic features, including ataxia, pyramidal signs, spasticity, and mental retardation (Behr, 1909; Thomas et al., 1984).&#13; Patients with mutations in genes other than OPA1 can present with clinical features reminiscent of Behr syndrome. Mutations in one of these genes, OPA3 (606580), result in type III 3-methylglutaconic aciduria (MGCA3; 258501). Lerman-Sagie (1995) noted that the abnormal urinary pattern in MGCA3 may not be picked up by routine organic acid analysis, suggesting that early reports of Behr syndrome with normal metabolic features may actually have been 3-methylglutaconic aciduria type III.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66358">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75728"><div><strong>Charcot-Marie-Tooth disease type 1C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75728</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.">C0270913</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">For a phenotypic description and a discussion of genetic heterogeneity of autosomal dominant Charcot-Marie-Tooth disease type 1, see CMT1B (118200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75728">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_220946"><div><strong>Deficiency of ribose-5-phosphate isomerase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>220946</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.">C1291609</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ribose 5-phosphate isomerase deficiency (RPIAD) is an autosomal recessive inborn error of metabolism of the pentose phosphate pathway that presents with leukoencephalopathy and peripheral neuropathy (Huck et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/220946">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371512"><div><strong>Charcot-Marie-Tooth disease type 2B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371512</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.">C1833219</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A severe form of axonal Charcot-Marie-Tooth disease, a peripheral sensorimotor neuropathy. Onset in the second or third decade has manifestations of ulceration and infection of the feet. Symmetric and distal weakness develops mostly in the legs together with a severe symmetric distal sensory loss. Tendon reflexes are only reduced at ankles and foot deformities including pes cavus or planus and hammer toes, appear in childhood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371512">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335969"><div><strong>Pontocerebellar hypoplasia type 1A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335969</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.">C1843504</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia (PCH) refers to a group of severe neurodegenerative disorders affecting growth and function of the brainstem and cerebellum, resulting in little or no development. Different types were classified based on the clinical picture and the spectrum of pathologic changes. PCH type 1 is characterized by central and peripheral motor dysfunction associated with anterior horn cell degeneration resembling infantile spinal muscular atrophy (SMA; see SMA1, 253300); death usually occurs early.&#13; Genetic Heterogeneity of Pontocerebellar Hypoplasia&#13; Also see PCH1B (614678), caused by mutation in the EXOSC3 gene (606489); PCH1C (616081), caused by mutation in the EXOSC8 gene (606019); PCH1D (618065), caused by mutation in the EXOSC9 gene (606180); PCH1E (619303), caused by mutation in the SLC25A46 gene (610826); PCH1F (619304), caused by mutation in the EXOSC1 gene (606493); PCH2A (277470), caused by mutation in the TSEN54 gene (608755); PCH2B (612389), caused by mutation in the TSEN2 gene (608753); PCH2C (612390), caused by mutation in the TSEN34 gene (608754); PCH2D (613811), caused by mutation in the SEPSECS gene (613009); PCH3 (608027), caused by mutation in the PCLO gene (604918); PCH4 (225753), caused by mutation in the TSEN54 gene; PCH5 (610204), caused by mutation in the TSEN54 gene; PCH6 (611523), caused by mutation in the RARS2 gene (611524); PCH7 (614969), caused by mutation in the TOE1 gene (613931); PCH8 (614961), caused by mutation in the CHMP1A gene (164010); PCH9 (615809), caused by mutation in the AMPD2 gene (102771); PCH10 (615803), caused by mutation in the CLP1 gene (608757); PCH11 (617695), caused by mutation in the TBC1D23 gene (617687); PCH12 (618266), caused by mutation in the COASY gene (609855); PCH13 (618606), caused by mutation in the VPS51 gene (615738); PCH14 (619301), caused by mutation in the PPIL1 gene (601301); PCH15 (619302), caused by mutation in the CDC40 gene (605585); PCH16 (619527), caused by mutation in the MINPP1 gene (605391); and PCH17 (619909), caused by mutation in the PRDM13 gene (616741) on chromosome 6q16.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335969">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338045"><div><strong>Mitochondrial DNA depletion syndrome 6 (hepatocerebral type)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338045</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.">C1850406</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MPV17-related mitochondrial DNA (mtDNA) maintenance defect presents in the vast majority of affected individuals as an early-onset encephalohepatopathic (hepatocerebral) disease that is typically associated with mtDNA depletion, particularly in the liver. A later-onset neuromyopathic disease characterized by myopathy and neuropathy, and associated with multiple mtDNA deletions in muscle, has also rarely been described. MPV17-related mtDNA maintenance defect, encephalohepatopathic form is characterized by: Hepatic manifestations (liver dysfunction that typically progresses to liver failure, cholestasis, hepatomegaly, and steatosis); Neurologic involvement (developmental delay, hypotonia, microcephaly, and motor and sensory peripheral neuropathy); Gastrointestinal manifestations (gastrointestinal dysmotility, feeding difficulties, and failure to thrive); and Metabolic derangements (lactic acidosis and hypoglycemia). Less frequent manifestations include renal tubulopathy, nephrocalcinosis, and hypoparathyroidism. Progressive liver disease often leads to death in infancy or early childhood. Hepatocellular carcinoma has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338045">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342816"><div><strong>Cold-induced sweating syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342816</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.">C1853198</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cold-induced sweating syndrome (CISS) and its infantile presentation, Crisponi syndrome(CS) is characterized by dysmorphic features (distinctive facies, lower facial weakness, flexion deformity at the elbows, camptodactyly with fisted hands, misshapen feet, and overriding toes); intermittent contracture of facial and oropharyngeal muscles when crying or being handled with puckering of lips and drooling of foamy saliva often associated with laryngospasm and respiratory distress; excessive startling and opisthotonus-like posturing with unexpected tactile or auditory stimuli; poor suck reflex and severely impaired swallowing; and a scaly erythematous rash. During the first decade of life, children with CISS/CS develop profuse sweating of the face, arms, and chest with ambient temperatures below 18º to 22º C, and with other stimuli including nervousness or ingestion of sweets. Affected individuals sweat very little in hot environments and may feel overheated. Progressive thoracolumbar kyphoscoliosis occurs, requiring intervention in the second decade.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342816">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_339942"><div><strong>Spinocerebellar ataxia type 23</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339942</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.">C1853250</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia-23 (SCA23) is an adult-onset autosomal dominant neurodegenerative disorder characterized by slowly progressive gait and limb ataxia, with variable additional features, including peripheral neuropathy and dysarthria (Bakalkin et al., 2010).&#13; For a general discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339942">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347653"><div><strong>Spinocerebellar ataxia type 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347653</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.">C1858501</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rare disease with manifestations of action tremor associated with relatively mild cerebellar ataxia. Associated pyramidal and extrapyramidal signs and dementia have been reported. Prevalence is unknown. Approximately 40 families have been reported. The pathogenesis seems to be related to a toxic effect at the RNA level as it is caused by a CAG expansion at the 5'' end of the PPP2R2B gene on chromosome 5q31-5q32.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436373"><div><strong>PHARC syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436373</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.">C2675204</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fiskerstrand type peripheral neuropathy is a slowly-progressive Refsum-like disorder associating signs of peripheral neuropathy with late-onset hearing loss, cataract and pigmentary retinopathy that become evident during the third decade of life.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436373">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_412958"><div><strong>Hypermanganesemia with dystonia, polycythemia, and cirrhosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>412958</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.">C2750442</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypermanganesemia with dystonia 1 (HMNDYT1) is characterized by the following: A movement disorder resulting from manganese accumulation in the basal ganglia. Whole-blood manganese concentrations that often exceed 2000 nmol/L (normal: &lt;320 nmol/L). Polycythemia. Hepatomegaly with variable hepatic fibrosis/cirrhosis. Neurologic findings can manifest in childhood (ages 2-15 years) as four-limb dystonia, leading to a characteristic high-stepping gait ("cock-walk gait"), dysarthria, fine tremor, and bradykinesia or on occasion spastic paraplegia; or in adulthood as parkinsonism (shuffling gait, rigidity, bradykinesia, hypomimia, and monotone speech) unresponsive to L-dopa treatment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/412958">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462246"><div><strong>Neuropathy, hereditary sensory and autonomic, type 1C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462246</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.">C3150896</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary sensory and autonomic neuropathy type IC (HSAN1C) is an autosomal dominant neurologic disorder characterized by sensory neuropathy with variable autonomic and motor involvement. Most patients have adult onset of slowly progressive distal sensory impairment manifest as numbness, tingling, or pain, as well as distal muscle atrophy. Complications include ulceration and osteomyelitis. Some patients may have a more severe phenotype with onset in childhood. Electrophysiologic studies show a predominantly axonal neuropathy with some demyelinating features. Some patients may have evidence of central nervous system involvement, including macular telangiectasia type 2 and/or pyramidal signs. Affected individuals have increased levels of plasma 1-deoxysphingolipids (1-deoxySLs), which are thought to be neurotoxic. (summary by Rotthier et al., 2010, Gantner et al., 2019, and Triplett et al., 2019). Oral supplementation with serine decreases 1-deoxySL and may offer some clinical benefits (Fridman et al., 2019).&#13; For a discussion of genetic heterogeneity of HSAN, see HSAN1A (162400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462246">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482058"><div><strong>Alpha-methylacyl-CoA racemase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482058</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.">C3280428</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">AMACR deficiency is a rare autosomal recessive peroxisomal disorder characterized by adult onset of variable neurodegenerative symptoms affecting the central and peripheral nervous systems. Features may include seizures, visual failure, sensorimotor neuropathy, spasticity, migraine, and white matter hyperintensities on brain imaging. Serum pristanic acid and C27 bile acid intermediates are increased (summary by Smith et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482058">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482607"><div><strong>Spastic ataxia 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482607</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.">C3280977</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic ataxia-5 (SPAX5) is an autosomal recessive neurodegenerative disorder characterized by early-onset spasticity resulting in significantly impaired ambulation, cerebellar ataxia, oculomotor apraxia, dystonia, and myoclonic epilepsy (summary by Pierson et al., 2011).&#13; For a discussion of genetic heterogeneity of spastic ataxia, see SPAX1 (108600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482607">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766452"><div><strong>Brown-Vialetto-van Laere syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766452</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.">C3553538</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Brown-Vialetto-Van Laere syndrome-2 (BVVLS2) is an autosomal recessive progressive neurologic disorder characterized by early childhood onset of sensorineural deafness, bulbar dysfunction, and severe diffuse muscle weakness and wasting of the upper and lower limbs and axial muscles, resulting in respiratory insufficiency. Some patients may lose independent ambulation. Because it results from a defect in riboflavin metabolism, some patients may benefit from high-dose riboflavin supplementation (summary by Johnson et al., 2012; Foley et al., 2014).&#13; For discussion of genetic heterogeneity of Brown-Vialetto-Van Laere syndrome, see BVVLS1 (211530).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766452">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815995"><div><strong>Early-onset progressive neurodegeneration-blindness-ataxia-spasticity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815995</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.">C3809665</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-79B (SPG79B) is an autosomal recessive progressive neurologic disorder characterized by onset of spastic paraplegia and optic atrophy in the first decade of life. Additional features are variable, but may include peripheral neuropathy, cerebellar ataxia, and cognitive impairment (summary by Rydning et al., 2017).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815995">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863379"><div><strong>Cataract-growth hormone deficiency-sensory neuropathy-sensorineural hearing loss-skeletal dysplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863379</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.">C4014942</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CAGSSS, which comprises cataracts, growth hormone deficiency, sensory neuropathy, sensorineural hearing loss, and skeletal dysplasia, is an autosomal recessive multisystemic disorder with a highly variable phenotypic spectrum. Not all of these features are always present, and almost all the features may present at different times and/or become more apparent with age. The skeletal features are consistent with spondyloepimetaphyseal dysplasia (SEMD) (summary by Vona et al., 2018).&#13; One family had a distinctive presentation with infantile-onset intractable seizures and cortical abnormalities reminiscent of Leigh syndrome (see 256000). The correlation between genotype and phenotype remains unclear, but since the IARS2 gene is involved in mitochondrial function, heterogeneous manifestations can be expected (Takezawa et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863379">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863786"><div><strong>Charcot-Marie-Tooth disease axonal type 2S</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863786</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.">C4015349</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Charcot-Marie-Tooth disease type 2S is a relatively pure form of autosomal recessive axonal neuropathy characterized by onset in the first decade of slowly progressive distal muscle weakness and atrophy affecting the lower and upper limbs. Patients have decreased reflexes and variable distal sensory impairment (summary by Cottenie et al., 2014).&#13; For a phenotypic description and a discussion of genetic heterogeneity of axonal CMT, see CMT2A1 (118210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863786">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_864072"><div><strong>Charcot-Marie-Tooth disease axonal type 2T</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>864072</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.">C4015635</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Charcot-Marie-Tooth disease type 2T (CMT2T) is a slowly progressive autosomal recessive sensorimotor peripheral neuropathy with onset in middle age (Higuchi et al., 2016).&#13; For a phenotypic description and a discussion of genetic heterogeneity of axonal CMT, see CMT2A1 (118210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/864072">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934730"><div><strong>Spinocerebellar ataxia 43</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934730</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.">C4310763</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia-43 (SCA43) is an autosomal dominant, slowly progressive neurologic disorder characterized by adult-onset gait and limb ataxia and often associated with peripheral neuropathy mainly affecting the motor system, although some patients may have distal sensory impairment (summary by Depondt et al., 2016).&#13; For a general discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934757"><div><strong>Charcot-Marie-Tooth disease axonal type 2CC</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934757</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.">C4310790</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Axonal Charcot-Marie-Tooth disease type 2CC is an autosomal dominant peripheral neuropathy that predominantly affects the lower limbs, resulting in muscle weakness and atrophy and gait impairment. Other features include distal sensory impairment and less severe involvement of the upper limbs. The age at onset and severity are variable (summary by Rebelo et al., 2016).&#13; For a phenotypic description and a discussion of genetic heterogeneity of axonal CMT type 2, see CMT2A (118210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934757">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1617917"><div><strong>Spinocerebellar ataxia, autosomal recessive 26</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1617917</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.">C4539948</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1617917">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1640257"><div><strong>Perrault syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1640257</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.">C4551721</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Perrault syndrome is characterized by sensorineural hearing loss (SNHL) in males and females and ovarian dysfunction in females. SNHL is bilateral and ranges from profound with prelingual (congenital) onset to moderate with early-childhood onset. When onset is in early childhood, hearing loss can be progressive. Ovarian dysfunction ranges from gonadal dysgenesis (absent or streak gonads) manifesting as primary amenorrhea to primary ovarian insufficiency (POI) defined as cessation of menses before age 40 years. Fertility in affected males is reported as normal (although the number of reported males is limited). Neurologic features described in some individuals with Perrault syndrome include learning difficulties and developmental delay, cerebellar ataxia, and motor and sensory peripheral neuropathy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1640257">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1631838"><div><strong>Mitochondrial DNA depletion syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1631838</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.">C4551995</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial neurogastrointestinal encephalopathy (MNGIE) disease is characterized by progressive gastrointestinal dysmotility (manifesting as early satiety, nausea, dysphagia, gastroesophageal reflux, postprandial emesis, episodic abdominal pain and/or distention, and diarrhea); cachexia; ptosis/ophthalmoplegia or ophthalmoparesis; leukoencephalopathy; and demyelinating peripheral neuropathy (manifesting as paresthesias (tingling, numbness, and pain) and symmetric and distal weakness more prominently affecting the lower extremities). The order in which manifestations appear is unpredictable. Onset is usually between the first and fifth decades; in about 60% of individuals, symptoms begin before age 20 years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1631838">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1642893"><div><strong>Charcot-Marie-Tooth disease, dominant intermediate G</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1642893</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.">C4693509</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CMTDIG is an autosomal dominant neurologic disorder with a highly variable phenotype. Most affected individuals have onset in the first or second decades of slowly progressive distal motor weakness and atrophy, resulting in gait instability and distal upper limb impairment, as well as distal sensory impairment. More severely affected individuals may have pes cavus and claw hands and become wheelchair-bound, whereas other affected individuals have later onset with a milder disease course. Electrophysiologic studies tend to show median motor nerve conduction velocities (NCV) in the 'intermediate' range, between 25 and 45 m/s (summary by Berciano et al., 2017).&#13; In a review of intermediate CMT, Berciano et al. (2017) noted that advanced axonal degeneration may induce secondary demyelinating changes resulting in decreased NCV and attenuated compound muscle action potential (CMAP) in median nerve conduction studies. They thus suggested that testing the upper arm, axilla to elbow, may provide more accurate assessment of NCV and CMAP and reveal an intermediate phenotype (review by Berciano et al., 2017).&#13; For a discussion of genetic heterogeneity of CMTDI, see 606482.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1642893">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648475"><div><strong>Charcot-marie-tooth disease, axonal, type 2DD</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648475</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.">C4747974</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Charcot-Marie-Tooth disease type 2DD is an autosomal dominant peripheral sensorimotor neuropathy mainly affecting the lower limbs. Affected individuals have gait impairment due to distal muscle weakness and atrophy. Some patients may also have involvement of the distal upper limbs, resulting in atrophy of the intrinsic hand muscles. The age at onset and severity of the disorder is highly variable, even within families, and those with earlier onset in late childhood or the teenage years tend to have a more severe disease course. Patients remain ambulatory even late in the disease, although some may require orthotic devices (summary by Lassuthova et al., 2018).&#13; For a phenotypic description and a discussion of genetic heterogeneity of axonal CMT type 2, see CMT2A (118210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648475">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648480"><div><strong>Peripheral neuropathy, autosomal recessive, with or without impaired intellectual development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648480</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.">C4748283</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive peripheral neuropathy with or without impaired intellectual development is an early childhood-onset neurologic disorder characterized by slowly progressive distal motor impairment resulting in gait difficulties, often with loss of ambulation, and difficulties using the hands in most patients. Most affected individuals also have impaired intellectual development, although some have normal cognition. Electrophysiologic testing and sural nerve biopsy are most compatible with an axonal motor neuropathy; some patients may show signs of demyelination. Additional features may include eye movement abnormalities, claw hands, foot deformities, and scoliosis (summary by Ylikallio et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648480">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_1679560"><div><strong>Mitochondrial myopathy, episodic, with optic atrophy and reversible leukoencephalopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679560</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.">C5193223</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Episodic mitochondrial myopathy with or without optic atrophy and reversible leukoencephalopathy (MEOAL) is an autosomal recessive neuromuscular disorder characterized mainly by childhood onset of progressive muscle weakness and exercise intolerance. Patients have episodic exacerbation, which may be associated with increased serum creatine kinase or lactic acid. Additional more variable features may include optic atrophy, reversible leukoencephalopathy, and later onset of a sensorimotor polyneuropathy. The disorder results from impaired formation of Fe-S clusters, which are essential cofactors for proper mitochondrial function (summary by Gurgel-Giannetti et al., 2018)</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679560">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684779"><div><strong>Developmental and epileptic encephalopathy, 80</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684779</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.">C5231418</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-80 (DEE80) is an autosomal recessive neurologic disorder characterized by the onset of refractory seizures in the first year of life. Patients have severe global developmental delay and may have additional variable features, including dysmorphic or coarse facial features, distal skeletal abnormalities, and impaired hearing or vision. At the cellular level, the disorder is caused by a defect in the synthesis of glycosylphosphatidylinositol (GPI), and thus affects the expression of GPI-anchored proteins at the cell surface (summary by Murakami et al., 2019).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684779">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1748867"><div><strong>Cardioencephalomyopathy, fatal infantile, due to cytochrome c oxidase deficiency 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1748867</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.">C5399977</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 2 (MC4DN2) is an autosomal recessive multisystem metabolic disorder characterized by the onset of symptoms at birth or in the first weeks or months of life. Affected individuals have severe hypotonia, often associated with feeding difficulties and respiratory insufficiency necessitating tube feeding and mechanical ventilation. The vast majority of patients develop hypertrophic cardiomyopathy in the first days or weeks of life, which usually leads to death in infancy or early childhood. Patients also show neurologic abnormalities, including developmental delay, nystagmus, fasciculations, dystonia, EEG changes, and brain imaging abnormalities compatible with a diagnosis of Leigh syndrome (see 256000). There may also be evidence of systemic involvement with hepatomegaly and myopathy, although neurogenic muscle atrophy is more common and may resemble spinal muscular atrophy type I (SMA1; 253300). Serum lactate is increased, and laboratory studies show decreased mitochondrial complex IV protein and activity levels in various tissues, including heart and skeletal muscle. Most patients die in infancy of cardiorespiratory failure (summary by Papadopoulou et al., 1999).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1748867">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1731194"><div><strong>Charcot-Marie-Tooth disease, axonal, mitochondrial form, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1731194</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.">C5435765</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial axonal Charcot-Marie-Tooth disease (CMTMA) is inherited only through the maternal line. The disorder is characterized by onset of distal muscle weakness and atrophy mainly affecting the lower limbs and resulting in difficulty walking in the second decade of life, although both earlier and later onset can occur. Upper limb involvement often develops with time, and affected individuals have weakness and atrophy of the intrinsic hand muscles. Other features may include distal sensory impairment, foot deformities, scoliosis, hypo- or hyperreflexia, spastic paraparesis, and neurogenic bladder. Electrophysiologic studies are compatible with an axonal sensorimotor peripheral neuropathy, and muscle and nerve biopsy show evidence of mitochondrial dysfunction with decreased activities of respiratory complexes, mtDNA deletions, and mitochondrial hyperplasia (summary by Fay et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1731194">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1763505"><div><strong>Mitochondrial complex 4 deficiency, nuclear type 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1763505</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.">C5436710</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 14 (MC4DN14) is an autosomal recessive metabolic disorder characterized by global developmental delay, exercise intolerance, walking difficulties, impaired intellectual development, short stature, mild dysmorphic features, and sensorimotor peripheral neuropathy. Patient skeletal muscle tissue shows decreased levels and activity of mitochondrial respiratory complex IV (Ostergaard et al., 2015).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1763505">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1730423"><div><strong>Mitochondrial complex 4 deficiency, nuclear type 17</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1730423</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.">C5436718</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 17 (MC4DN17) is an autosomal recessive neurometabolic disorder with somewhat variable clinical manifestations and severity. Most affected individuals present in early childhood with motor and gait difficulties after normal early development. These motor abnormalities progress to spastic tetraparesis, sometimes resulting in loss of ambulation. Many patients also show episodic developmental regression: some have impaired cognition and dysarthria, although others have normal speech and cognition. More variable features include seizures and sensorimotor polyneuropathy. The clinical features tend to stabilize over time. Brain imaging shows a cavitating leukodystrophy, and laboratory studies show variably decreased levels and activity of mitochondrial respiratory complex IV in patient tissues (Melchionda et al., 2014).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1730423">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1788285"><div><strong>Pontocerebellar hypoplasia, type 1E</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1788285</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.">C5543328</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 1E (PCH1E) is an autosomal recessive neurologic disorder characterized by severe hypotonia and respiratory insufficiency apparent soon after birth. Virtually all patients die in the first days or weeks of life. Postmortem examination and brain imaging show pontocerebellar atrophy and loss of anterior motor neurons in the spinal cord. Additional more variable features may include optic atrophy, peripheral neuropathy, dysmorphic features, congenital contracture or foot deformities, and seizures (summary by Braunisch et al., 2018).&#13; For a phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1A (607596).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1788285">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1800507"><div><strong>Acute infantile liver failure-cerebellar ataxia-peripheral sensory motor neuropathy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1800507</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.">C5569084</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-21 (SCAR21) is a neurologic disorder characterized by onset of cerebellar ataxia associated with cerebellar atrophy in early childhood. Affected individuals also have recurrent episodes of liver failure in the first decade, resulting in chronic liver fibrosis, as well as later onset of a peripheral neuropathy. Mild learning disabilities may also occur (summary by Schmidt et al., 2015).&#13; The phenotype is highly variable: all patients appear to have episodic and severe liver dysfunction in early childhood that tends to resolve with age. Affected individuals also show mild developmental or language delay and/or later onset of variable neurologic features, such as motor dysfunction (summary by Lenz et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1800507">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824007"><div><strong>Neuronopathy, distal hereditary motor, autosomal dominant 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824007</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.">C5774234</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-10 (HMND10) is a neurologic disorder of the peripheral nerves characterized clinically by length-dependent motor neuropathy primarily affecting the lower limbs. Affected individuals have onset of distal muscle weakness and atrophy in early childhood that results in walking difficulties and gait abnormalities. Some have pyramidal signs, including hyperreflexia, suggesting the involvement of upper motor neurons. Electrophysiologic studies are consistent with a neurogenic process. More variable features may include mild intellectual disability, minor gyration defects on brain imaging, foot deformities, and connective tissue defects (1 family) (Capuano et al., 2016; Iacomino et al., 2020).&#13; For a discussion of genetic heterogeneity of autosomal dominant distal HMN, see HMND1 (182960).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824007">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824067"><div><strong>Congenital disorder of glycosylation, type IIy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824067</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.">C5774294</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type IIy (CDG2Y) is an autosomal recessive multisystemic congenital disorder characterized by poor overall growth and global developmental delay with impaired intellectual development. Other features may include hypotonia, seizures, brain imaging abnormalities, dysmorphic features, and various skeletal defects. Laboratory studies show a subtle type II glycosylation defect of serum transferrin (Tambe et al., 2020).&#13; For a general discussion of CDGs, see CDG1A (212065).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824067">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1847098"><div><strong>Progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal recessive 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1847098</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.">C5882731</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive progressive external ophthalmoplegia-6 (PEOB6) is characterized by ptosis and ophthalmoplegia as well as other clinical manifestations and multiple mtDNA deletions in muscle (Shintaku et al., 2022).&#13; For a discussion of genetic heterogeneity of autosomal recessive PEO, see PEOB1 (258450).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1847098">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1859316"><div><strong>Encephalopathy, porphyria-related</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1859316</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.">C5935574</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Porphyria-related encephalopathy (ENCEP) is an autosomal recessive disorder characterized by the onset of progressive neurologic abnormalities in early infancy. Features include global developmental delay, poor walking or inability to walk, impaired intellectual development, hypotonia, ataxia, dysarthria, spasticity, ocular abnormalities, and peripheral neuropathy. The disease course is usually rapidly progressive and may lead to death in childhood. Laboratory studies show increased plasma and urinary levels of the putatively neurotoxic porphyrin precursors delta-aminolevulinic acid (ALA), porphobilinogen (PBG), and uroporphyrin resulting from deficient HMBS enzymatic activity (Solis et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1859316">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1862491"><div><strong>Leukoencephalopathy, porphyria-related</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1862491</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.">C5935575</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Porphyria-associated leukoencephalopathy (LENCEP) is an autosomal recessive disorder characterized by the onset of variable and slowly progressive neurologic abnormalities in childhood or adolescence with survival to late adulthood. Features include spastic paraparesis, cerebellar ataxia, peripheral axonal neuropathy, ocular abnormalities, and leukoencephalopathy affecting the deep cerebral white matter on brain imaging. Some individuals have more severe manifestations, such as optic atrophy with progressive visual loss, loss of ambulation, and mild cognitive decline. Laboratory studies show variably increased plasma and urinary levels of delta-aminolevulinic acid (ALA), porphobilinogen (PBG), and uroporphyrin due to decreased HMBS enzyme activity. The severity of the disorder appears to depend on the particular genotype and the variant effects on HMBS enzymatic activity; intrafamilial variability is often observed. The clinical discrepancies may be particularly apparent in individuals with compound heterozygous HMBS variants that have different effects on enzyme function (Stutterd et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1862491">Condition Record</a></div></div>
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<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679560" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial myopathy, episodic, with optic atrophy and reversible leukoencephalopathy</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_1824007" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronopathy, distal hereditary motor, autosomal dominant 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462246" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuropathy, hereditary sensory and autonomic, type 1C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648480" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peripheral neuropathy, autosomal recessive, with or without impaired intellectual development</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1640257" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Perrault syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436373" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PHARC syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_11161" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Phytanic acid storage disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335969" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia type 1A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1788285" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia, type 1E</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1847098" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal recessive 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482607" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic ataxia 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia 43</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia type 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_339942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia type 23</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1617917" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia, autosomal recessive 26</a></div></span></div></div>
</div>
<div class="portlet mgSection" id="ID_105">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<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/34610502">Anti-MAG neuropathy: From biology to clinical management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Steck AJ</span><br />
<span class="medgenPMjournal">J Neuroimmunol</span>
2021 Dec 15;361:577725.
Epub 2021 Sep 28
doi: 10.1016/j.jneuroim.2021.577725.
<span class="bold">PMID: </span><a href="/pubmed/34610502" target="_blank">34610502</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30480471">Patisiran, an RNAi therapeutic for the treatment of hereditary transthyretin-mediated amyloidosis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kristen AV,
Ajroud-Driss S,
Conceição I,
Gorevic P,
Kyriakides T,
Obici L</span><br />
<span class="medgenPMjournal">Neurodegener Dis Manag</span>
2019 Feb;9(1):5-23.
Epub 2018 Nov 27
doi: 10.2217/nmt-2018-0033.
<span class="bold">PMID: </span><a href="/pubmed/30480471" target="_blank">30480471</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24458095">Diabetic neuropathies: diagnosis and management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Deli G,
Bosnyak E,
Pusch G,
Komoly S,
Feher G</span><br />
<span class="medgenPMjournal">Neuroendocrinology</span>
2013;98(4):267-80.
Epub 2014 Jan 22
doi: 10.1159/000358728.
<span class="bold">PMID: </span><a href="/pubmed/24458095" target="_blank">24458095</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22sensorimotor%20neuropathy%22%5Btiab%3A~0%5D)%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 (11)</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/38499015">Safety and efficacy of continuous subcutaneous levodopa-carbidopa infusion (ND0612) for Parkinson's disease with motor fluctuations (BouNDless): a phase 3, randomised, double-blind, double-dummy, multicentre trial.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Espay AJ,
Stocchi F,
Pahwa R,
Albanese A,
Ellenbogen A,
Ferreira JJ,
Giladi N,
Gurevich T,
Hassin-Baer S,
Hernandez-Vara J,
Isaacson SH,
Kieburtz K,
LeWitt PA,
Lopez-Manzanares L,
Olanow CW,
Poewe W,
Sarva H,
Yardeni T,
Adar L,
Salin L,
Lopes N,
Sasson N,
Case R,
Rascol O;
BouNDless Study Group</span><br />
<span class="medgenPMjournal">Lancet Neurol</span>
2024 May;23(5):465-476.
Epub 2024 Mar 15
doi: 10.1016/S1474-4422(24)00052-8.
<span class="bold">PMID: </span><a href="/pubmed/38499015" target="_blank">38499015</a></div>
<div class="nl"><a target="_blank" href="/pubmed/37470282">Natural History and Phenotypic Spectrum of GAA-FGF14 Sporadic Late-Onset Cerebellar Ataxia (SCA27B).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wirth T,
Clément G,
Delvallée C,
Bonnet C,
Bogdan T,
Iosif A,
Schalk A,
Chanson JB,
Pellerin D,
Brais B,
Roth V,
Wandzel M,
Fleury MC,
Piton A,
Calmels N,
Namer IJ,
Kremer S,
Tranchant C,
Renaud M,
Anheim M</span><br />
<span class="medgenPMjournal">Mov Disord</span>
2023 Oct;38(10):1950-1956.
Epub 2023 Jul 20
doi: 10.1002/mds.29560.
<span class="bold">PMID: </span><a href="/pubmed/37470282" target="_blank">37470282</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33845034">Efficacy and safety of tisotumab vedotin in previously treated recurrent or metastatic cervical cancer (innovaTV 204/GOG-3023/ENGOT-cx6): a multicentre, open-label, single-arm, phase 2 study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Coleman RL,
Lorusso D,
Gennigens C,
González-Martín A,
Randall L,
Cibula D,
Lund B,
Woelber L,
Pignata S,
Forget F,
Redondo A,
Vindeløv SD,
Chen M,
Harris JR,
Smith M,
Nicacio LV,
Teng MSL,
Laenen A,
Rangwala R,
Manso L,
Mirza M,
Monk BJ,
Vergote I;
innovaTV 204/GOG-3023/ENGOT-cx6 Collaborators</span><br />
<span class="medgenPMjournal">Lancet Oncol</span>
2021 May;22(5):609-619.
Epub 2021 Apr 9
doi: 10.1016/S1470-2045(21)00056-5.
<span class="bold">PMID: </span><a href="/pubmed/33845034" target="_blank">33845034</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28968367">Axonal Sensorimotor Polyneuropathies.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Li Y</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2017 Oct;23(5, Peripheral Nerve and Motor Neuron Disorders):1378-1393.
doi: 10.1212/CON.0000000000000514.
<span class="bold">PMID: </span><a href="/pubmed/28968367" target="_blank">28968367</a></div>
<div class="nl"><a target="_blank" href="/pubmed/18025055">Arsenic neurotoxicity--a review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vahidnia A,
van der Voet GB,
de Wolff FA</span><br />
<span class="medgenPMjournal">Hum Exp Toxicol</span>
2007 Oct;26(10):823-32.
doi: 10.1177/0960327107084539.
<span class="bold">PMID: </span><a href="/pubmed/18025055" target="_blank">18025055</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Sensorimotor%20neuropathy%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 (155)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/33609196">Screening for ATTR amyloidosis in the clinic: overlapping disorders, misdiagnosis, and multiorgan awareness.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nativi-Nicolau JN,
Karam C,
Khella S,
Maurer MS</span><br />
<span class="medgenPMjournal">Heart Fail Rev</span>
2022 May;27(3):785-793.
Epub 2021 Feb 20
doi: 10.1007/s10741-021-10080-2.
<span class="bold">PMID: </span><a href="/pubmed/33609196" target="_blank">33609196</a><a href="/pmc/articles/PMC9033715" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34610502">Anti-MAG neuropathy: From biology to clinical management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Steck AJ</span><br />
<span class="medgenPMjournal">J Neuroimmunol</span>
2021 Dec 15;361:577725.
Epub 2021 Sep 28
doi: 10.1016/j.jneuroim.2021.577725.
<span class="bold">PMID: </span><a href="/pubmed/34610502" target="_blank">34610502</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34427020">Nitrous oxide-induced myeloneuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Swart G,
Blair C,
Lu Z,
Yogendran S,
Offord J,
Sutherland E,
Barnes S,
Palavra N,
Cremer P,
Bolitho S,
Michael Halmagyi G</span><br />
<span class="medgenPMjournal">Eur J Neurol</span>
2021 Dec;28(12):3938-3944.
Epub 2021 Sep 6
doi: 10.1111/ene.15077.
<span class="bold">PMID: </span><a href="/pubmed/34427020" target="_blank">34427020</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28968367">Axonal Sensorimotor Polyneuropathies.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Li Y</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2017 Oct;23(5, Peripheral Nerve and Motor Neuron Disorders):1378-1393.
doi: 10.1212/CON.0000000000000514.
<span class="bold">PMID: </span><a href="/pubmed/28968367" target="_blank">28968367</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25299287">Paraneoplastic neuropathies.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Muppidi S,
Vernino S</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2014 Oct;20(5 Peripheral Nervous System Disorders):1359-72.
doi: 10.1212/01.CON.0000455876.53309.ec.
<span class="bold">PMID: </span><a href="/pubmed/25299287" target="_blank">25299287</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Sensorimotor%20neuropathy%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 (276)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/37396189">Editorial: Frontiers in diagnostic and therapeutic approaches in diabetic sensorimotor neuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kempler P,
Menyhárt A,
Horváth V,
Kiss ÁT,
Körei AE</span><br />
<span class="medgenPMjournal">Front Endocrinol (Lausanne)</span>
2023;14:1228101.
Epub 2023 Jun 15
doi: 10.3389/fendo.2023.1228101.
<span class="bold">PMID: </span><a href="/pubmed/37396189" target="_blank">37396189</a><a href="/pmc/articles/PMC10311439" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34610502">Anti-MAG neuropathy: From biology to clinical management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Steck AJ</span><br />
<span class="medgenPMjournal">J Neuroimmunol</span>
2021 Dec 15;361:577725.
Epub 2021 Sep 28
doi: 10.1016/j.jneuroim.2021.577725.
<span class="bold">PMID: </span><a href="/pubmed/34610502" target="_blank">34610502</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34427020">Nitrous oxide-induced myeloneuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Swart G,
Blair C,
Lu Z,
Yogendran S,
Offord J,
Sutherland E,
Barnes S,
Palavra N,
Cremer P,
Bolitho S,
Michael Halmagyi G</span><br />
<span class="medgenPMjournal">Eur J Neurol</span>
2021 Dec;28(12):3938-3944.
Epub 2021 Sep 6
doi: 10.1111/ene.15077.
<span class="bold">PMID: </span><a href="/pubmed/34427020" target="_blank">34427020</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33845034">Efficacy and safety of tisotumab vedotin in previously treated recurrent or metastatic cervical cancer (innovaTV 204/GOG-3023/ENGOT-cx6): a multicentre, open-label, single-arm, phase 2 study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Coleman RL,
Lorusso D,
Gennigens C,
González-Martín A,
Randall L,
Cibula D,
Lund B,
Woelber L,
Pignata S,
Forget F,
Redondo A,
Vindeløv SD,
Chen M,
Harris JR,
Smith M,
Nicacio LV,
Teng MSL,
Laenen A,
Rangwala R,
Manso L,
Mirza M,
Monk BJ,
Vergote I;
innovaTV 204/GOG-3023/ENGOT-cx6 Collaborators</span><br />
<span class="medgenPMjournal">Lancet Oncol</span>
2021 May;22(5):609-619.
Epub 2021 Apr 9
doi: 10.1016/S1470-2045(21)00056-5.
<span class="bold">PMID: </span><a href="/pubmed/33845034" target="_blank">33845034</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32442803">Idiopathic CD4 lymphocytopenia in neurological disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gupta D,
Mehta A,
Shetty N,
R P,
Javali M,
T Acharya P,
Srinivasa R</span><br />
<span class="medgenPMjournal">Clin Neurol Neurosurg</span>
2020 Aug;195:105923.
Epub 2020 May 15
doi: 10.1016/j.clineuro.2020.105923.
<span class="bold">PMID: </span><a href="/pubmed/32442803" target="_blank">32442803</a></div>
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<div class="nl"><a target="_blank" href="/pubmed/33845034">Efficacy and safety of tisotumab vedotin in previously treated recurrent or metastatic cervical cancer (innovaTV 204/GOG-3023/ENGOT-cx6): a multicentre, open-label, single-arm, phase 2 study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Coleman RL,
Lorusso D,
Gennigens C,
González-Martín A,
Randall L,
Cibula D,
Lund B,
Woelber L,
Pignata S,
Forget F,
Redondo A,
Vindeløv SD,
Chen M,
Harris JR,
Smith M,
Nicacio LV,
Teng MSL,
Laenen A,
Rangwala R,
Manso L,
Mirza M,
Monk BJ,
Vergote I;
innovaTV 204/GOG-3023/ENGOT-cx6 Collaborators</span><br />
<span class="medgenPMjournal">Lancet Oncol</span>
2021 May;22(5):609-619.
Epub 2021 Apr 9
doi: 10.1016/S1470-2045(21)00056-5.
<span class="bold">PMID: </span><a href="/pubmed/33845034" target="_blank">33845034</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32442803">Idiopathic CD4 lymphocytopenia in neurological disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gupta D,
Mehta A,
Shetty N,
R P,
Javali M,
T Acharya P,
Srinivasa R</span><br />
<span class="medgenPMjournal">Clin Neurol Neurosurg</span>
2020 Aug;195:105923.
Epub 2020 May 15
doi: 10.1016/j.clineuro.2020.105923.
<span class="bold">PMID: </span><a href="/pubmed/32442803" target="_blank">32442803</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27235344">Screening for anti-titin antibodies in patients with various paraneoplastic neurological syndromes.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Berger B,
Stich O,
Labeit S,
Rauer S</span><br />
<span class="medgenPMjournal">J Neuroimmunol</span>
2016 Jun 15;295-296:18-20.
Epub 2016 Apr 13
doi: 10.1016/j.jneuroim.2016.04.004.
<span class="bold">PMID: </span><a href="/pubmed/27235344" target="_blank">27235344</a></div>
<div class="nl"><a target="_blank" href="/pubmed/8542040">Multifocal motor neuropathy and chronic inflammatory demyelinating polyradiculoneuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Léger JM</span><br />
<span class="medgenPMjournal">Curr Opin Neurol</span>
1995 Oct;8(5):359-63.
doi: 10.1097/00019052-199510000-00006.
<span class="bold">PMID: </span><a href="/pubmed/8542040" target="_blank">8542040</a></div>
<div class="nl"><a target="_blank" href="/pubmed/7921589">Vasculitic neuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Davies L</span><br />
<span class="medgenPMjournal">Baillieres Clin Neurol</span>
1994 Apr;3(1):193-210.
<span class="bold">PMID: </span><a href="/pubmed/7921589" target="_blank">7921589</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Sensorimotor%20neuropathy%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 (109)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/38499015">Safety and efficacy of continuous subcutaneous levodopa-carbidopa infusion (ND0612) for Parkinson's disease with motor fluctuations (BouNDless): a phase 3, randomised, double-blind, double-dummy, multicentre trial.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Espay AJ,
Stocchi F,
Pahwa R,
Albanese A,
Ellenbogen A,
Ferreira JJ,
Giladi N,
Gurevich T,
Hassin-Baer S,
Hernandez-Vara J,
Isaacson SH,
Kieburtz K,
LeWitt PA,
Lopez-Manzanares L,
Olanow CW,
Poewe W,
Sarva H,
Yardeni T,
Adar L,
Salin L,
Lopes N,
Sasson N,
Case R,
Rascol O;
BouNDless Study Group</span><br />
<span class="medgenPMjournal">Lancet Neurol</span>
2024 May;23(5):465-476.
Epub 2024 Mar 15
doi: 10.1016/S1474-4422(24)00052-8.
<span class="bold">PMID: </span><a href="/pubmed/38499015" target="_blank">38499015</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34427020">Nitrous oxide-induced myeloneuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Swart G,
Blair C,
Lu Z,
Yogendran S,
Offord J,
Sutherland E,
Barnes S,
Palavra N,
Cremer P,
Bolitho S,
Michael Halmagyi G</span><br />
<span class="medgenPMjournal">Eur J Neurol</span>
2021 Dec;28(12):3938-3944.
Epub 2021 Sep 6
doi: 10.1111/ene.15077.
<span class="bold">PMID: </span><a href="/pubmed/34427020" target="_blank">34427020</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31705291">Prognostic factor of poor outcome in anti-MAG neuropathy: clinical and electrophysiological analysis of a French Cohort.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Tang MH,
Mathis S,
Duffau P,
Cazenave P,
Solé G,
Duval F,
Soulages A,
Le Masson G</span><br />
<span class="medgenPMjournal">J Neurol</span>
2020 Feb;267(2):561-571.
Epub 2019 Nov 8
doi: 10.1007/s00415-019-09618-0.
<span class="bold">PMID: </span><a href="/pubmed/31705291" target="_blank">31705291</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27235344">Screening for anti-titin antibodies in patients with various paraneoplastic neurological syndromes.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Berger B,
Stich O,
Labeit S,
Rauer S</span><br />
<span class="medgenPMjournal">J Neuroimmunol</span>
2016 Jun 15;295-296:18-20.
Epub 2016 Apr 13
doi: 10.1016/j.jneuroim.2016.04.004.
<span class="bold">PMID: </span><a href="/pubmed/27235344" target="_blank">27235344</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11954874">Chemotherapy-induced peripheral neuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Quasthoff S,
Hartung HP</span><br />
<span class="medgenPMjournal">J Neurol</span>
2002 Jan;249(1):9-17.
doi: 10.1007/pl00007853.
<span class="bold">PMID: </span><a href="/pubmed/11954874" target="_blank">11954874</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Sensorimotor%20neuropathy%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 (126)</a></div></div>
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