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<span>Genetic Conditions: B</span>
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<h1>Genetic Conditions: B</h1>
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<p>Explore the signs and symptoms, genetic cause, and inheritance pattern of various health conditions.</p>
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<span class='blue-label'>Other genetic conditions A-Z</span>
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<li><a href="https://medlineplus.gov/genetics/condition-0/" data-alpha="0-9">0-9</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/" data-alpha="A">A</a></li>
<li><span class="active">B</span></li>
<li><a href="https://medlineplus.gov/genetics/condition-c/" data-alpha="C">C</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-d/" data-alpha="D">D</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-e/" data-alpha="E">E</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-f/" data-alpha="F">F</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-g/" data-alpha="G">G</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-h/" data-alpha="H">H</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-i/" data-alpha="I">I</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-j/" data-alpha="J">J</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-k/" data-alpha="K">K</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-l/" data-alpha="L">L</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-m/" data-alpha="M">M</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-n/" data-alpha="N">N</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-o/" data-alpha="O">O</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-p/" data-alpha="P">P</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-q/" data-alpha="Q">Q</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-r/" data-alpha="R">R</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-s/" data-alpha="S">S</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-t/" data-alpha="T">T</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-u/" data-alpha="U">U</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-v/" data-alpha="V">V</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-w/" data-alpha="W">W</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-x/" data-alpha="X">X</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-y/" data-alpha="Y">Y</a></li>
<li><a href="https://medlineplus.gov/genetics/condition-z/" data-alpha="Z">Z</a></li>
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<section>
<ul class="withident breaklist">
<li>B variant GM2 gangliosidosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/tay-sachs-disease/">Tay-Sachs disease</a></li>
<li>B. burgdorferi infection, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/lyme-disease/">Lyme disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/baller-gerold-syndrome/">Baller-Gerold syndrome</a></li>
<li>Ballinger-Wallace syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/maternally-inherited-diabetes-and-deafness/">Maternally inherited diabetes and deafness</a></li>
<li>Baltic myoclonic epilepsy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-myoclonic-epilepsy-type-1/">Progressive myoclonic epilepsy type 1 </a></li>
<li>Baltic myoclonus, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-myoclonic-epilepsy-type-1/">Progressive myoclonic epilepsy type 1 </a></li>
<li>Baltic myoclonus epilepsy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-myoclonic-epilepsy-type-1/">Progressive myoclonic epilepsy type 1 </a></li>
<li>BAM syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bosma-arhinia-microphthalmia-syndrome/">Bosma arhinia microphthalmia syndrome</a></li>
<li>Bamboo hair syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/netherton-syndrome/">Netherton syndrome</a></li>
<li>BAMS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bosma-arhinia-microphthalmia-syndrome/">Bosma arhinia microphthalmia syndrome</a></li>
<li>BANF, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/neurofibromatosis-type-2/">Neurofibromatosis type 2</a></li>
<li>Bangungut, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/brugada-syndrome/">Brugada syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bannayan-riley-ruvalcaba-syndrome/">Bannayan-Riley-Ruvalcaba syndrome</a></li>
<li>Bannayan-Ruvalcaba-Riley syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bannayan-riley-ruvalcaba-syndrome/">Bannayan-Riley-Ruvalcaba syndrome</a></li>
<li>Bannayan-Zonana syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bannayan-riley-ruvalcaba-syndrome/">Bannayan-Riley-Ruvalcaba syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bap1-tumor-predisposition-syndrome/">BAP1 tumor predisposition syndrome</a></li>
<li>BAP1-related tumor predisposition syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bap1-tumor-predisposition-syndrome/">BAP1 tumor predisposition syndrome</a></li>
<li>BAP1-TPDS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bap1-tumor-predisposition-syndrome/">BAP1 tumor predisposition syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/baraitser-winter-syndrome/">Baraitser-Winter syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bardet-biedl-syndrome/">Bardet-Biedl syndrome</a></li>
<li>Bare lymphocyte syndrome type 2, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bare-lymphocyte-syndrome-type-ii/">Bare lymphocyte syndrome type II</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bare-lymphocyte-syndrome-type-i/">Bare lymphocyte syndrome type I</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bare-lymphocyte-syndrome-type-ii/">Bare lymphocyte syndrome type II</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bart-pumphrey-syndrome/">Bart-Pumphrey syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/barth-syndrome/">Barth syndrome</a></li>
<li>Bartholin-Patau syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/trisomy-13/">Trisomy 13</a></li>
<li>Bartter disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bartter-syndrome/">Bartter syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bartter-syndrome/">Bartter syndrome</a></li>
<li>Bartter&#x27;s syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bartter-syndrome/">Bartter syndrome</a></li>
<li>Basal cell nevus syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/gorlin-syndrome/">Gorlin syndrome</a></li>
<li>Basal ganglia disease, adult-onset, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/neuroferritinopathy/">Neuroferritinopathy</a></li>
<li>Basedow disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/graves-disease/">Graves&#x27; disease</a></li>
<li>Basedow&#x27;s disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/graves-disease/">Graves&#x27; disease</a></li>
<li>Bassen-Kornzweig disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/abetalipoproteinemia/">Abetalipoproteinemia</a></li>
<li>Bassen-Kornzweig syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/abetalipoproteinemia/">Abetalipoproteinemia</a></li>
<li>Batten-Mayou disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/cln3-disease/">CLN3 disease</a></li>
<li>Batten-Spielmeyer-Vogt disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/cln3-disease/">CLN3 disease</a></li>
<li>BBGD, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/biotin-thiamine-responsive-basal-ganglia-disease/">Biotin-thiamine-responsive basal ganglia disease</a></li>
<li>BBS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bardet-biedl-syndrome/">Bardet-Biedl syndrome</a></li>
<li>BCD, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bietti-crystalline-dystrophy/">Bietti crystalline dystrophy</a></li>
<li>BCD syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharocheilodontic-syndrome/">Blepharocheilodontic syndrome</a></li>
<li>BCDS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharocheilodontic-syndrome/">Blepharocheilodontic syndrome</a></li>
<li>BCIE, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/epidermolytic-hyperkeratosis/">Epidermolytic hyperkeratosis</a></li>
<li>BCKD deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/maple-syrup-urine-disease/">Maple syrup urine disease</a></li>
<li>BCNS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/gorlin-syndrome/">Gorlin syndrome</a></li>
<li>BDA, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/diamond-blackfan-anemia/">Diamond-Blackfan anemia</a></li>
<li>BDLS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/cornelia-de-lange-syndrome/">Cornelia de Lange syndrome</a></li>
<li>BDPLT1, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bernard-soulier-syndrome/">Bernard-Soulier syndrome</a></li>
<li>BDPLT11, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/glycoprotein-vi-deficiency/">Glycoprotein VI deficiency</a></li>
<li>BDPLT4, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/gray-platelet-syndrome/">Gray platelet syndrome</a></li>
<li>BDS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/diamond-blackfan-anemia/">Diamond-Blackfan anemia</a></li>
<li>Beaded hair, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/monilethrix/">Monilethrix</a></li>
<li>Beals syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-contractural-arachnodactyly/">Congenital contractural arachnodactyly</a></li>
<li>Beals-Hecht syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-contractural-arachnodactyly/">Congenital contractural arachnodactyly</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beare-stevenson-cutis-gyrata-syndrome/">Beare-Stevenson cutis gyrata syndrome</a></li>
<li>Bechterew disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/ankylosing-spondylitis/">Ankylosing spondylitis</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beckwith-wiedemann-syndrome/">Beckwith-Wiedemann syndrome</a></li>
<li>Behcet disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/behcet-disease/">Behçet disease</a></li>
<li>Behcet syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/behcet-disease/">Behçet disease</a></li>
<li>Behcet triple symptom complex, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/behcet-disease/">Behçet disease</a></li>
<li>Behcet&#x27;s syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/behcet-disease/">Behçet disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/behcet-disease/">Behçet disease</a></li>
<li>Benign chronic pemphigus, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hailey-hailey-disease/">Hailey-Hailey disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/benign-essential-blepharospasm/">Benign essential blepharospasm</a></li>
<li>Benign essential tremor, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/essential-tremor/">Essential tremor</a></li>
<li>Benign familial neonatal convulsions, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li>Benign familial neonatal epilepsy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li>Benign familial pemphigus, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hailey-hailey-disease/">Hailey-Hailey disease</a></li>
<li>Benign familial polycythemia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/familial-erythrocytosis/">Familial erythrocytosis</a></li>
<li>Benign neonatal convulsions, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li>Benign neonatal epilepsy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li>Benign paroxysmal peritonitis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/familial-mediterranean-fever/">Familial Mediterranean fever</a></li>
<li>Benign pilomatricoma, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/pilomatricoma/">Pilomatricoma</a></li>
<li>Benign pilomatrixoma, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/pilomatricoma/">Pilomatricoma</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/benign-recurrent-intrahepatic-cholestasis/">Benign recurrent intrahepatic cholestasis</a></li>
<li>Benign scapuloperoneal muscular dystrophy with early contractures, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/emery-dreifuss-muscular-dystrophy/">Emery-Dreifuss muscular dystrophy</a></li>
<li>Berardinelli-Seip congenital lipodystrophy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-generalized-lipodystrophy/">Congenital generalized lipodystrophy</a></li>
<li>Berardinelli-Seip syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-generalized-lipodystrophy/">Congenital generalized lipodystrophy</a></li>
<li>Berdon syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/megacystis-microcolon-intestinal-hypoperistalsis-syndrome/">Megacystis-microcolon-intestinal hypoperistalsis syndrome</a></li>
<li>Berlin breakage syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/nijmegen-breakage-syndrome/">Nijmegen breakage syndrome</a></li>
<li>Bernard-Horner syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/horner-syndrome/">Horner syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bernard-soulier-syndrome/">Bernard-Soulier syndrome</a></li>
<li>Bessel-Hagen disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hereditary-multiple-osteochondromas/">Hereditary multiple osteochondromas</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beta-thalassemia/">Beta thalassemia</a></li>
<li>Beta-alanine synthase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/beta-ureidopropionase-deficiency/">Beta-ureidopropionase deficiency</a></li>
<li>Beta-D-mannosidosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/beta-mannosidosis/">Beta-mannosidosis</a></li>
<li>Beta-galactosidase-1 (GLB1) deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/gm1-gangliosidosis/">GM1 gangliosidosis</a></li>
<li>Beta-glucuronidase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/mucopolysaccharidosis-type-vii/">Mucopolysaccharidosis type VII</a></li>
<li>Beta-hexosaminidase-beta-subunit deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/sandhoff-disease/">Sandhoff disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beta-ketothiolase-deficiency/">Beta-ketothiolase deficiency</a></li>
<li>Beta-mannosidase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/beta-mannosidosis/">Beta-mannosidosis</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beta-mannosidosis/">Beta-mannosidosis</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beta-propeller-protein-associated-neurodegeneration/">Beta-propeller protein-associated neurodegeneration</a></li>
<li>Beta-sitosterolemia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/sitosterolemia/">Sitosterolemia</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/beta-ureidopropionase-deficiency/">Beta-ureidopropionase deficiency</a></li>
<li>Betalipoprotein deficiency disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/abetalipoproteinemia/">Abetalipoproteinemia</a></li>
<li>Beuren syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/williams-syndrome/">Williams syndrome</a></li>
<li>BFNE, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li>BFNS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-familial-neonatal-seizures/">Benign familial neonatal seizures</a></li>
<li>BGS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/baller-gerold-syndrome/">Baller-Gerold syndrome</a></li>
<li>BH4 deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/tetrahydrobiopterin-deficiency/">Tetrahydrobiopterin deficiency</a></li>
<li>BHD, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/birt-hogg-dube-syndrome/">Birt-Hogg-Dubé syndrome</a></li>
<li>Biallelic mismatch repair deficiency syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/constitutional-mismatch-repair-deficiency-syndrome/">Constitutional mismatch repair deficiency syndrome</a></li>
<li>Biason-Lauber syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/mullerian-aplasia-and-hyperandrogenism/">Müllerian aplasia and hyperandrogenism</a></li>
<li>Biber-Haab-Dimmer dystrophy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/lattice-corneal-dystrophy-type-i/">Lattice corneal dystrophy type I</a></li>
<li>Bidirectional tachycardia induced by catecholamines, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/catecholaminergic-polymorphic-ventricular-tachycardia/">Catecholaminergic polymorphic ventricular tachycardia</a></li>
<li>BIDS syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/trichothiodystrophy/">Trichothiodystrophy</a></li>
<li>BIE, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/epidermolytic-hyperkeratosis/">Epidermolytic hyperkeratosis</a></li>
<li>Bietti crystalline corneoretinal dystrophy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bietti-crystalline-dystrophy/">Bietti crystalline dystrophy</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bietti-crystalline-dystrophy/">Bietti crystalline dystrophy</a></li>
<li>Bietti crystalline retinopathy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bietti-crystalline-dystrophy/">Bietti crystalline dystrophy</a></li>
<li>Bietti tapetoretinal degeneration with marginal corneal dystrophy, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bietti-crystalline-dystrophy/">Bietti crystalline dystrophy</a></li>
<li>Bifunctional peroxisomal enzyme deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/d-bifunctional-protein-deficiency/">D-bifunctional protein deficiency</a></li>
<li>Bilateral acoustic neurofibromatosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/neurofibromatosis-type-2/">Neurofibromatosis type 2</a></li>
<li>Bilateral choanal atresia, cardiac defects, deafness, and dysmorphic appearance, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/burn-mckeown-syndrome/">Burn-McKeown syndrome</a></li>
<li>Bilateral striopallidodentate calcinosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/primary-familial-brain-calcification/">Primary familial brain calcification</a></li>
<li>Bimanual synergia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-mirror-movement-disorder/">Congenital mirror movement disorder</a></li>
<li>Bimanual synkinesis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-mirror-movement-disorder/">Congenital mirror movement disorder</a></li>
<li>BIOT, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/biotinidase-deficiency/">Biotinidase deficiency</a></li>
<li>Biotin-(propionyl-CoA-carboxylase) ligase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/holocarboxylase-synthetase-deficiency/">Holocarboxylase synthetase deficiency</a></li>
<li>Biotin-(propionyl-coenzyme A-carboxylase) ligase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/holocarboxylase-synthetase-deficiency/">Holocarboxylase synthetase deficiency</a></li>
<li>Biotin-responsive basal ganglia disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/biotin-thiamine-responsive-basal-ganglia-disease/">Biotin-thiamine-responsive basal ganglia disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/biotin-thiamine-responsive-basal-ganglia-disease/">Biotin-thiamine-responsive basal ganglia disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/biotinidase-deficiency/">Biotinidase deficiency</a></li>
<li>Bipolar affective disorder, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bipolar-disorder/">Bipolar disorder</a></li>
<li>Bipolar affective psychosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bipolar-disorder/">Bipolar disorder</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bipolar-disorder/">Bipolar disorder</a></li>
<li>Bipolar spectrum disorder, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bipolar-disorder/">Bipolar disorder</a></li>
<li>Birk-Barel mental retardation dysmorphism syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/kcnk9-imprinting-syndrome/">KCNK9 imprinting syndrome</a></li>
<li>Birk-Barel syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/kcnk9-imprinting-syndrome/">KCNK9 imprinting syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/birt-hogg-dube-syndrome/">Birt-Hogg-Dubé syndrome</a></li>
<li>Bjornstad syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bjornstad-syndrome/">Björnstad syndrome</a></li>
<li>BJS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bjornstad-syndrome/">Björnstad syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bjornstad-syndrome/">Björnstad syndrome</a></li>
<li>Black liver-jaundice syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/dubin-johnson-syndrome/">Dubin-Johnson syndrome</a></li>
<li>Blackfan Diamond anemia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/diamond-blackfan-anemia/">Diamond-Blackfan anemia</a></li>
<li>Blackfan-Diamond disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/diamond-blackfan-anemia/">Diamond-Blackfan anemia</a></li>
<li>Blackfan-Diamond syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/diamond-blackfan-anemia/">Diamond-Blackfan anemia</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bladder-cancer/">Bladder cancer</a></li>
<li>Bladder carcinoma urinary, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bladder-cancer/">Bladder cancer</a></li>
<li>Bladder tumor, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bladder-cancer/">Bladder cancer</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/blau-syndrome/">Blau syndrome</a></li>
<li>Bleeding diathesis due to a collagen receptor defect, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/glycoprotein-vi-deficiency/">Glycoprotein VI deficiency</a></li>
<li>Bleeding disorder, platelet-type, 1, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bernard-soulier-syndrome/">Bernard-Soulier syndrome</a></li>
<li>Bleeding disorder, platelet-type, 11, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/glycoprotein-vi-deficiency/">Glycoprotein VI deficiency</a></li>
<li>Bleeding disorder, platelet-type, 4, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/gray-platelet-syndrome/">Gray platelet syndrome</a></li>
<li>Blepharo-cheilo-dontic syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharocheilodontic-syndrome/">Blepharocheilodontic syndrome</a></li>
<li>Blepharo-cheilo-odontic syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharocheilodontic-syndrome/">Blepharocheilodontic syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/blepharocheilodontic-syndrome/">Blepharocheilodontic syndrome</a></li>
<li>Blepharophimosis and mental retardation syndrome, Say-Barber/Biesecker/Young-Simpson type, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/ohdo-syndrome-say-barber-biesecker-young-simpson-variant/">Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant</a></li>
<li>Blepharophimosis syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharophimosis-ptosis-and-epicanthus-inversus-syndrome/">Blepharophimosis, ptosis, and epicanthus inversus syndrome</a></li>
<li>Blepharophimosis, ptosis, and epicanthus inversus, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharophimosis-ptosis-and-epicanthus-inversus-syndrome/">Blepharophimosis, ptosis, and epicanthus inversus syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/blepharophimosis-ptosis-and-epicanthus-inversus-syndrome/">Blepharophimosis, ptosis, and epicanthus inversus syndrome</a></li>
<li>Blepharophimosis-intellectual deficit syndrome, Say-Barber/Biesecker/Young-Simpson type, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/ohdo-syndrome-say-barber-biesecker-young-simpson-variant/">Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant</a></li>
<li>Blepharophimosis-mental retardation syndrome, Maat-Kievit-Brunner type, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/ohdo-syndrome-maat-kievit-brunner-type/">Ohdo syndrome, Maat-Kievit-Brunner type</a></li>
<li>Blepharophimosis-ptosis-intellectual disability syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/kaufman-oculocerebrofacial-syndrome/">Kaufman oculocerebrofacial syndrome</a></li>
<li>Bloch-Siemens syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/incontinentia-pigmenti/">Incontinentia pigmenti</a></li>
<li>Bloch-Siemens-Sulzberger Syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/incontinentia-pigmenti/">Incontinentia pigmenti</a></li>
<li>Bloch-Sulzberger Syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/incontinentia-pigmenti/">Incontinentia pigmenti</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bloom-syndrome/">Bloom syndrome</a></li>
<li>Bloom&#x27;s syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bloom-syndrome/">Bloom syndrome</a></li>
<li>Bloom-Torre-Machacek syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bloom-syndrome/">Bloom syndrome</a></li>
<li>BLS type II, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bare-lymphocyte-syndrome-type-ii/">Bare lymphocyte syndrome type II</a></li>
<li>BLT syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/brain-lung-thyroid-syndrome/">Brain-lung-thyroid syndrome</a></li>
<li>Blue baby syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/methemoglobinemia-beta-globin-type/">Methemoglobinemia, beta-globin type</a></li>
<li>BMCC deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/3-methylcrotonyl-coa-carboxylase-deficiency/">3-methylcrotonyl-CoA carboxylase deficiency</a></li>
<li>BMKS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/burn-mckeown-syndrome/">Burn-McKeown syndrome</a></li>
<li>BMMRD, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/constitutional-mismatch-repair-deficiency-syndrome/">Constitutional mismatch repair deficiency syndrome</a></li>
<li>BMRS SBBYS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/ohdo-syndrome-say-barber-biesecker-young-simpson-variant/">Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant</a></li>
<li>BMRS, MKB type, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/ohdo-syndrome-maat-kievit-brunner-type/">Ohdo syndrome, Maat-Kievit-Brunner type</a></li>
<li>BNHS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/boucher-neuhauser-syndrome/">Boucher-Neuhäuser syndrome</a></li>
<li>BNS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/boucher-neuhauser-syndrome/">Boucher-Neuhäuser syndrome</a></li>
<li>BO syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>BOFS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchio-oculo-facial-syndrome/">Branchio-oculo-facial syndrome</a></li>
<li>Bohring syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bohring-opitz-syndrome/">Bohring-Opitz syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bohring-opitz-syndrome/">Bohring-Opitz syndrome</a></li>
<li>Bonneau-Beaumont syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hyperferritinemia-cataract-syndrome/">Hyperferritinemia-cataract syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/boomerang-dysplasia/">Boomerang dysplasia</a></li>
<li>BOPS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bohring-opitz-syndrome/">Bohring-Opitz syndrome</a></li>
<li>BOR, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>BOR syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Borrelia burgdorferi infection, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/lyme-disease/">Lyme disease</a></li>
<li>Borreliosis, Lyme, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/lyme-disease/">Lyme disease</a></li>
<li>BOS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bohring-opitz-syndrome/">Bohring-Opitz syndrome</a></li>
<li>BOS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/buschke-ollendorff-syndrome/">Buschke-Ollendorff syndrome</a></li>
<li>BOS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bosma-arhinia-microphthalmia-syndrome/">Bosma arhinia microphthalmia syndrome</a></li>
<li>Bosma syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bosma-arhinia-microphthalmia-syndrome/">Bosma arhinia microphthalmia syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/boucher-neuhauser-syndrome/">Boucher-Neuhäuser syndrome</a></li>
<li>Bourneville disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/tuberous-sclerosis-complex/">Tuberous sclerosis complex</a></li>
<li>Bourneville phakomatosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/tuberous-sclerosis-complex/">Tuberous sclerosis complex</a></li>
<li>Bowen Hutterite syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bowen-conradi-syndrome/">Bowen-Conradi syndrome</a></li>
<li>Bowen syndrome, Hutterite type, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bowen-conradi-syndrome/">Bowen-Conradi syndrome</a></li>
<li>Bowen-Conradi Hutterite syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bowen-conradi-syndrome/">Bowen-Conradi syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bowen-conradi-syndrome/">Bowen-Conradi syndrome</a></li>
<li>BPAN, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/beta-propeller-protein-associated-neurodegeneration/">Beta-propeller protein-associated neurodegeneration</a></li>
<li>BPES, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/blepharophimosis-ptosis-and-epicanthus-inversus-syndrome/">Blepharophimosis, ptosis, and epicanthus inversus syndrome</a></li>
<li>BPIDS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/kaufman-oculocerebrofacial-syndrome/">Kaufman oculocerebrofacial syndrome</a></li>
<li>Brachial neuralgia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hereditary-neuralgic-amyotrophy/">Hereditary neuralgic amyotrophy</a></li>
<li>Brachial neuritis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hereditary-neuralgic-amyotrophy/">Hereditary neuralgic amyotrophy</a></li>
<li>Brachial plexus neuritis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hereditary-neuralgic-amyotrophy/">Hereditary neuralgic amyotrophy</a></li>
<li>Brachmann-de Lange syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/cornelia-de-lange-syndrome/">Cornelia de Lange syndrome</a></li>
<li>Brachydactyly with joint dysplasia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/liebenberg-syndrome/">Liebenberg syndrome</a></li>
<li>Brachydactyly-elbow wrist dysplasia syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/liebenberg-syndrome/">Liebenberg syndrome</a></li>
<li>Brachydactyly-mental retardation syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/2q37-deletion-syndrome/">2q37 deletion syndrome</a></li>
<li>Brachydactyly-spherophakia syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/weill-marchesani-syndrome/">Weill-Marchesani syndrome</a></li>
<li>Brachymorphy with spherophakia syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/weill-marchesani-syndrome/">Weill-Marchesani syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bradyopsia/">Bradyopsia</a></li>
<li>Brain small-vessel disease with hemorrhage, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/col4a1-related-brain-small-vessel-disease/">COL4A1-related brain small-vessel disease</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/brain-lung-thyroid-syndrome/">Brain-lung-thyroid syndrome</a></li>
<li>Brain-thyroid-lung syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/brain-lung-thyroid-syndrome/">Brain-lung-thyroid syndrome</a></li>
<li>Branched-chain alpha-keto acid dehydrogenase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/maple-syrup-urine-disease/">Maple syrup urine disease</a></li>
<li>Branched-chain ketoaciduria, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/maple-syrup-urine-disease/">Maple syrup urine disease</a></li>
<li>Brancher deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/glycogen-storage-disease-type-iv/">Glycogen storage disease type IV</a></li>
<li>Branchial clefts with characteristic facies, growth retardation, imperforate nasolacrimal duct, and premature aging, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchio-oculo-facial-syndrome/">Branchio-oculo-facial syndrome</a></li>
<li>Branching enzyme deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/glycogen-storage-disease-type-iv/">Glycogen storage disease type IV</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/branchio-oculo-facial-syndrome/">Branchio-oculo-facial syndrome</a></li>
<li>Branchio-oto-renal syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Branchio-otorenal dysplasia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Branchio-otorenal syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Branchiootic syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Branchiootorenal dysplasia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Branchiootorenal spectrum disorders, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li>Branchiootorenal syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/branchiootorenal-branchiootic-syndrome/">Branchiootorenal/branchiootic syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/breast-cancer/">Breast cancer</a></li>
<li>Breast cancer, familial, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/breast-cancer/">Breast cancer</a></li>
<li>Breast carcinoma, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/breast-cancer/">Breast cancer</a></li>
<li>BRIC, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/benign-recurrent-intrahepatic-cholestasis/">Benign recurrent intrahepatic cholestasis</a></li>
<li>Brittle bone disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/osteogenesis-imperfecta/">Osteogenesis imperfecta</a></li>
<li>Brittle hair-intellectual impairment-decreased fertility-short stature syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/trichothiodystrophy/">Trichothiodystrophy</a></li>
<li>Broad thumb-hallux syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/rubinstein-taybi-syndrome/">Rubinstein-Taybi syndrome</a></li>
<li>Brock&#x27;s disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/familial-hypertrophic-cardiomyopathy/">Familial hypertrophic cardiomyopathy</a></li>
<li>Brody disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/brody-myopathy/">Brody myopathy</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/brody-myopathy/">Brody myopathy</a></li>
<li>Bronze diabetes, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hereditary-hemochromatosis/">Hereditary hemochromatosis</a></li>
<li>Bronzed cirrhosis, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/hereditary-hemochromatosis/">Hereditary hemochromatosis</a></li>
<li>Brooke-Fordyce trichoepitheliomas, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/multiple-familial-trichoepithelioma/">Multiple familial trichoepithelioma</a></li>
<li>Brown-Vialetto-Van Laere syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/riboflavin-transporter-deficiency-neuronopathy/">Riboflavin transporter deficiency neuronopathy</a></li>
<li>BRRS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bannayan-riley-ruvalcaba-syndrome/">Bannayan-Riley-Ruvalcaba syndrome</a></li>
<li>Bruck syndrome 1, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/kuskokwim-syndrome/">Kuskokwim syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/brugada-syndrome/">Brugada syndrome</a></li>
<li>Brunner syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/monoamine-oxidase-a-deficiency/">Monoamine oxidase A deficiency</a></li>
<li>Brunner-Winter syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/feingold-syndrome/">Feingold syndrome</a></li>
<li>Brunzell syndrome (with bone cysts), <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-generalized-lipodystrophy/">Congenital generalized lipodystrophy</a></li>
<li>Bruton&#x27;s agammaglobulinemia, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/x-linked-agammaglobulinemia/">X-linked agammaglobulinemia</a></li>
<li>BRWS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/baraitser-winter-syndrome/">Baraitser-Winter syndrome</a></li>
<li>BSCL, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/congenital-generalized-lipodystrophy/">Congenital generalized lipodystrophy</a></li>
<li>BSEP deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-familial-intrahepatic-cholestasis/">Progressive familial intrahepatic cholestasis</a></li>
<li>BSS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bernard-soulier-syndrome/">Bernard-Soulier syndrome</a></li>
<li>BTBGD, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/biotin-thiamine-responsive-basal-ganglia-disease/">Biotin-thiamine-responsive basal ganglia disease</a></li>
<li>BTD deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/biotinidase-deficiency/">Biotinidase deficiency</a></li>
<li>BTHS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/barth-syndrome/">Barth syndrome</a></li>
<li>Buckley syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/autosomal-dominant-hyper-ige-syndrome/">Autosomal dominant hyper-IgE syndrome</a></li>
<li>Bulbospinal muscular atrophy, X-linked, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/spinal-and-bulbar-muscular-atrophy/">Spinal and bulbar muscular atrophy</a></li>
<li>Bulging cornea, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/keratoconus/">Keratoconus</a></li>
<li>Bullous congenital ichthyosiform erythroderma, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/epidermolytic-hyperkeratosis/">Epidermolytic hyperkeratosis</a></li>
<li>Bullous erythroderma ichthyosiforme, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/epidermolytic-hyperkeratosis/">Epidermolytic hyperkeratosis</a></li>
<li>Bullous erythroderma ichthyosiformis congenita of Brocq, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/epidermolytic-hyperkeratosis/">Epidermolytic hyperkeratosis</a></li>
<li>Bullous ichthyosiform erythroderma, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/epidermolytic-hyperkeratosis/">Epidermolytic hyperkeratosis</a></li>
<li>Bundle branch block, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-familial-heart-block/">Progressive familial heart block</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/bunion/">Bunion</a></li>
<li>Bunion of great toe, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bunion/">Bunion</a></li>
<li>Burger-Grutz syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/familial-lipoprotein-lipase-deficiency/">Familial lipoprotein lipase deficiency</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/burn-mckeown-syndrome/">Burn-McKeown syndrome</a></li>
<li><a href="https://medlineplus.gov/genetics/condition/buschke-ollendorff-syndrome/">Buschke-Ollendorff syndrome</a></li>
<li>Butyrylcholinesterase deficiency, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/pseudocholinesterase-deficiency/">Pseudocholinesterase deficiency</a></li>
<li>BVVLS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/riboflavin-transporter-deficiency-neuronopathy/">Riboflavin transporter deficiency neuronopathy</a></li>
<li>BWCNS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bowen-conradi-syndrome/">Bowen-Conradi syndrome</a></li>
<li>BWS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/beckwith-wiedemann-syndrome/">Beckwith-Wiedemann syndrome</a></li>
<li>Byler disease, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-familial-intrahepatic-cholestasis/">Progressive familial intrahepatic cholestasis</a></li>
<li>Byler syndrome, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/progressive-familial-intrahepatic-cholestasis/">Progressive familial intrahepatic cholestasis</a></li>
<li>BZS, <i>see</i> <a href="https://medlineplus.gov/genetics/condition/bannayan-riley-ruvalcaba-syndrome/">Bannayan-Riley-Ruvalcaba syndrome</a></li>
</ul>
</section>
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