chromosome	gene symbol	phenotype
3p12	GBE1 glucan (1,4-alpha-), branching enzyme 1 (glycogen branching enzyme, Andersen disease, glycogen storage disease type IV)	Glycogen branching enzyme deficiency -GSD IV
3p21	DAG1 Dystroglycan1 (dystrophin-associated glycoprotein 1)	Muscular dystrophy-dystroglycanopathy (limb-girdle) -MDDGC7
3p21	SCN5A voltage-gated sodium channel type V alpha	Progressive familial heart block, type I -PFHBI Hereditary bundle branch system defect -HBBD Cardiac conduction defect, progressive -PCCD Brugada syndrome -SCN5A Cardiomyopathy, dilated, 1E -CMD1E Ventricular fibrillation, idiopathic -IVF Ventricular fibrillation, paroxysmal familial -VF Long QT syndrome-3 -LQT3 Sick Sinus Syndrome 1, autosomal recessive -SSS1
3p21	LAMB2 laminin, beta 2 (laminin S)	Myasthenic syndrome, congenital, associated with acetylcholine receptor deficien -
3p21.1-p12	ATXN7 ataxin 7	Spinocerebellar ataxia 7 -SCA7 Olivopontocerebellar atrophy III -OPCA3
3p21.3-p14.3	TNNC1 slow troponin C	Cardiomyopathy, dilated, 1Z -CMD1Z Familial hypertrophic cardiomyopathy, 13 -CMH13
3p21.3-p21.2	MYL3 myosin light chain 3	Cardiomopathy, hypertrophic, mid-ventricular chamber type -MYL3
3p21.31	SLC25A20 carnitine-acylcarnitine translocase	Carnitine-acylcarnitine translocase deficiency -CACT
3p22.2-p21.32	?	Hyalin body myopathy -HBM
3p22.3	GPD1L glycerol-3-phosphate dehydrogenase 1-like	brugada syndrome 2 -
3p23-21	?	Congenital muscle dystrophy with joint hyperlaxity -
3p23-p25	?	Limb-girdle, muscular dystrophy, type 1h -LGMD1H
3p24-p22	?	hereditary sensory and autonomic neuropathy type ib with cough and gastroesophag -HSAN1B
3p25	CAV3 caveolin 3	Distal myopathy with caveolin defect - Long QT syndrome 9 -LQT9 Hyperckemia, idiopathic - Creatine phosphokinase, elevated serum -CPK cardiomyopathy, familial hypertrophic -CMH Rippling muscle disease -RMD2 Muscular dystrophy, limb-girdle, type IC -LGMD1C
3p25	COLQ acetylcholinesterase collagen-like tail subunit	Congenital myasthenic syndrome with endplate acetylcholinesterase deficiency -EAD
3p25.1	TMEM43 transmembrane protein 43	luma related muscular dystrophy - arrhythmogenic right ventricular dysplasia, familial, 5 -ARVD5
3p25.3-p24.3	ABHD5 abhydrolase domain containing 5	Chanarin-Dorfman syndrome -CDS
3p26	?	Cerebellar ataxia, congenital, nonprogressive, autosomal dominant -SCA29
3p26.1-p25.3	ITPR1 Inositol 1,4,5-triphosphate receptor type 1	Spinocerebellar ataxia 15 -SCA15
3q13.1	?	Hereditary motor and sensory, neuropathy, proximal, type -HMSNP Neuropathy, hereditary motor and sensory, Okinawa type -HMSNO
3q13.1	?	Malignant hyperthermia susceptibility 4 -MHS4
3q21	RAB7 member RAS oncogene family	Charcot-Marie-Tooth neuropathy Type 2B -CMT2B
3q21	ZNF9 zinc finger protein 9	Proximal myotonic myopathy -PROMM Myotonic dystrophy, type 2 -DM2
3q21-q23	MRPL3 mitochondrial ribosomal protein L3	Hypertrophic mitochondrial cardiomyopathy with MRPL3 defect -
3q24	GYG1	Glycogen storage disease XV -GSD15
3q25.3	SLC33A1 acetyl-Coenzyme A transporter acetyl-Coenzyme A transportersolute carrier family 33 (acetyl- CoA transporter)	Spastic paraplegia 42, autosomal dominant -SPG42
3q27-q28	?	Spastic paraplegia 14 -SPG14
3q28-q29	OPA1 mitochondrial dynamin-like GTPase	optic atrophy 1 and deafness -