Gene symbol and protein	Gene Location	All allelic disease phenotypes - locus/disease symbols
MATR3 matrin 3	5q31	* Myopathy, distal 2 - MPD2 (4.5)
MED25 mediator complex subunit 25	19q13	* Charcot-Marie-Tooth disease, type 2B2 - CMT2B2 (14.52)
MFN2 mitofusin 2	1p36.22	* Hereditary motor and sensory neuropathy 2A - CMT2A (14.36)
MPZ myelin protein zero	1q22	* Charcot-Marie-Tooth disease, type 1B - CMT1B (14.2, 14.14, 14.21, 14.32, 14.44, 14.45) * Dejerine-Sottas syndrome - DSSA (14.2, 14.14, 14.21, 14.32, 14.44, 14.45) * Neuropathy, congenital hypomyelinating - CMT4E (14.2, 14.14, 14.21, 14.32, 14.44, 14.45) * Charcot-Marie-Tooth disease, type 2I - CMT2I (14.2, 14.14, 14.21, 14.32, 14.44, 14.45) * Charcot-Marie-Tooth disease, type 2J - CMT2J (14.2, 14.14, 14.21, 14.32, 14.44, 14.45) * Charcot-Marie-Tooth disease, dominant intermediate D - CMTDID (14.2, 14.14, 14.21, 14.32, 14.44, 14.45)
MRE11A MRE11 meiotic recombination 11 homolog A	11q21	* ataxia telangiectasia-like disorder - ATLD (13.53)
MRPL3 mitochondrial ribosomal protein L3	3q21-q23	* Hypertrophic mitochondrial cardiomyopathy with MRPL3 defect - (10.25)
MTM1 myotubularin	Xq28	* Myotubular myopathy, X-linked - MTM1 (3.14)
MTMR2 myotubularin-related protein 2	11q22	* Charcot-Marie-Tooth disease, type 4B1 - CMT4B1 (14.16)
MTTP microsomal triglyceride transfer protein	4q23	* abetalipoproteinemia - ABL (13.57)
MURC muscle-related coiled-coil protein	9q11.1	* Dilated cardiomyopathy with MURC defect - (10.65)
MUSK skeletal muscle receptor tyrosine kinase	9q31.3-q32	* Congenital myasthenic syndrome with MuSK deficiency - CMS1B (11.14)
MYBPC3 cardiac myosin binding protein-C	11p11.2	* Dilated cardiomyopathy with MYBPC3 defect - (3.32, 10.4, 10.52) * congenital skeletal myopathy and fatal cardiomyopathy - (3.32, 10.4, 10.52) * Cardiomyopathy, familial hypertrophic, 4 - CMH4 (3.32, 10.4, 10.52) * Cardimyopathy, dilated, 1A - CMD1A (3.32, 10.4, 10.52)
MYH2 myosin, heavy polypeptide 2, skeletal muscle	17p13.1	* Myopathy with joint contractures, ophtalmoplegia, and rimmed vacuoles - IBM3 (3.25, 3.26)
MYH3 myosine, heavy chain 3, skeletal muscle, embryonic	17p13	* Arthrogryposis, distal, type 2A - DA2A (16.9, 16.12) * Arthrogryposis, distal, type 2B - DA2B (16.9, 16.12)
MYH6 myosin heavy chain 6	14q12	* Cardiomyopathy, familial hypertrophic 1 - CMH1 (10.1, 10.13, 10.62) * Familial hypertrophic cardiomyopathy, 14 - CMH14 (10.1, 10.13, 10.62) * Cardiomyopathy, dilated, 1EE - CMD1EE (10.1, 10.13, 10.62)
MYH7 myosin, heavy polypeptide 7, cardiac muscle, beta	14q12	* Myopathy, distal 1 - MPD1 (3.13, 3.23, 3.24, 4.4, 10.1, 10.45) * cardiomyopathy, familial hypertrophic, 1, included - CMH1 (3.13, 3.23, 3.24, 4.4, 10.1, 10.45) * myopathy, congenital, with fiber-type disproportion - CFTD (3.13, 3.23, 3.24, 4.4, 10.1, 10.45) * Myosin storage myopathy - (3.13, 3.23, 3.24, 4.4, 10.1, 10.45) * Cardiomyopathy, dilated, 1S - CMD1S (3.13, 3.23, 3.24, 4.4, 10.1, 10.45)
MYH8 Myosin heavy chain, 8, skeletal muscle, perinatal	17p13	* Myosin, heavy chain, perinatal - MYH8 (16.15)
MYL2 myosin light chain 2	12q23-q24.3	* Cardiomyopathy, hypertrophic, mid-left ventricular chamber type - MYL2 (10.9) * Cardiomyopathy, familial hypertrophic, 10 - CMH10 (10.9)
MYL3 myosin light chain 3	3p21.3-p21.2	* Cardiomopathy, hypertrophic, mid-ventricular chamber type - MYL3 (10.7)
MYLK2 myosin light chain kinase 2	20q13.31	* cardiomyopathy, familial hypertrophic - CMH (10.15)
MYOT myotilin	5q31	* Muscular dystrophy, Limb-Girdle, type 1A - LGMD1A (1.11, 4.9, 5.6, 5.7) * Spheroid body myopathy - (1.11, 4.9, 5.6, 5.7) * Myofibrillar myopathy, myotilin related - MFM3 (1.11, 4.9, 5.6, 5.7)
MYOZ2 myozenin 2, or calsarcin 1, a Z disk protein	4q26	* Hypertrophic cardiomyopathy with myozenin 2 defect - (10.18) * Cardiomyopathy, familial hypertrophic, 16 - CMH16 - CMH16 (10.18)
MYPN myopalladin	10q21.1	* Dilated cardiomyopathy due to myopalladin defect - (10.58)