1. Muscular dystrophies 5. Other myopathies 9. Metabolic myopathies 13. Hereditary ataxias
2. Congenital muscular dystrophies 6. Myotonic syndromes 10. Hereditary cardiomyopathies 14. Hereditary motor and sensory neuropathies
3. Congenital myopathies 7. Ion channel muscle diseases 11. Congenital myasthenic syndromes 15. Hereditary paraplegias
4. Distal myopathies 8. Malignant hyperthermia 12. Motor neuron diseases 16. Other neuromuscular disorders


13. Hereditary ataxias (See references)

Disease phenotype
Item in this table
Key references
Gene symbol (chromosome)
protein
All allelic disease phenotypes - locus/disease symbols
Spinocerebellar ataxia 1 - (AD)
13.1
2063871
7951322
8170557
8358429
857157
ATXN1 (6p23)
ataxin 1
* Olivopontocerebellar atrophy I - OPCA1
* Spinocerebellar ataxia 1 - SCA1
Spinocerebellar ataxia 2 - (AD)
13.2
1971152
8358438
8896555
8896556
8896557
ATXN2 (12q24.1)
ataxin 2
* Olivopontocerebellar atrophy II - OPCA
* Spinocerebellar ataxia 2 - SCA2
Spinocerebellar ataxia 3 (Machado-Joseph disease) - (AD)
13.3
7874163
8279460
8358439
ATXN3 (14q24.3-q32.2)
ataxin 3
* Machado-Joseph disease - MJD
* Spinocerebellar ataxia 3 - SCA3
Spinocerebellar ataxia 4 - (AD)
13.4
12796826
8755926
? - (16q22.1)
* Spinocerebellar ataxia 4 - SCA4
Spinocerebellar ataxia 5 - (AD)
13.5
16429157
7874171
SPTBN2 (11q13)
spectrin, beta, non-erythrocytic 2
* Spinocerebellar ataxia 5 - SCA5
Spinocerebellar ataxia 6 - (AD)
13.6
8988170
9302278
CACNA1A (19p13.2-p13.1)
calcium channel, voltage-dependent, P/Q type, alpha 1A subunit
* Acetazolamide-responsive hereditary paroxymal cerebellar ataxia - APCA
* Cerebellar ataxia, paroxymal, acetazolamide-responsive - CAPA
* Cerebellar ataxia, pure - CACNA1A
* Episodic ataxia, type 2 - EA2
* Hemiplegic migraine, familial - FHM1
* Migraine familial hemiplegic 1, with progressive cerebellar ataxia - MHP1
* Spinocerebellar ataxia 6 - SCA6
Spinal cerebellarataxia 7 (olivopontocerebellar atrophy III) - (AD)
13.7
7647798
7647799
9425222
ATXN7 (3p21.1-p12)
ataxin 7
* Olivopontocerebellar atrophy III - OPCA3
* Spinocerebellar ataxia 7 - SCA7
Spinocerebellar ataxia 8 - (AD)
13.8
10192387
ATXN8OS (13q21)
ataxin 8 opposite strand
* Spinocerebellar ataxia 8 - SCA8
Spinocerebellar ataxia 10 - (AD)
13.9
9973298
ATXN10 (22q13.31)
ataxin 10
* Spinocerebellar ataxia 10 - SCA10
Spinocerebellar ataxia 11 - (AD)
13.10
10417284
18037885
TTBK2 (15q15.2)
tau tubulin kinase 2
* Spinocerebellar ataxia 11 - SCA11
Spinocerebellar ataxia 12 - (AD)
13.11
10581021
11198281
PPP2R2B (5q31-5q32)
protein phosphatase 2 regulatory subunit B, beta isoform
* Spinocerebellar ataxia 12 - SCA12
Spinocerebellar ataxia 13 - (AD)
13.12
10820125
16501573
KCNC3 (19q13.3-q13.4)
potassium voltage-gated channel, Shaw-related subfamily, member 3
* Spinocerebellar ataxia 13 - SCA13
Spinocerebellar ataxia 14 - (AD)
13.13
10939565
12644968
15313841
PRKCG (19q13.4)
protein kinase C, gamma
* Spinocerebellar ataxia 14 - SCA14
Spinocerebellar ataxia 15 - (AD)
13.14
12828938
17590087
ITPR1 (3p26.1-p25.3)
Inositol 1,4,5-triphosphate receptor type 1
* Spinocerebellar ataxia 15 - SCA15
Spinocerebellar ataxia 17 (Huntington disease-like) - (AD)
13.15
10484774
11313753
TBP (6q27)
TATA box binding protein
* Spinocerebellar ataxia 17 - SCA17
Spinocerebellar ataxia 18 - (AD)
13.16
11992570
19409521
IFRD1 (7q22-q32)
Interferon-related developmental regulator 1
* Spinocerebellar ataxia 18 - SCA18
Spinocerebellar ataxia 19 - (AD)
13.17
12384780
14679032
? - (1p21-q21)
* Spinocerebellar ataxia 19 - SCA19
Spinocerebellar ataxia 20 - (AD)
13.18
14998916
? - (11p13)
* Spinocerebellar ataxia 20 - SCA20
Spinocerebellar ataxia 21 - (AD)
13.19
12402269
? - (7p21-p15)
* Spinocerebellar ataxia 19 - SCA21
Spinocerebellar ataxia 22 - (AD)
13.20
12764052
? - (1p21-q23)
* Spinocerebellar ataxia 21 - SCA22
Spinocerebellar ataxia 23 - ( )
13.21
15306549
? - (20p13-p12-3)
* Spinocerebellar ataxia 23 - SCA23
Spinocerebellar ataxia 24 - (AD)
13.22
-
? - (1p36)
* Spinocerebellar ataxia 24 - SCA24
Spinocerebellar ataxia 25 - (AD)
13.23
14705117
? - ( 2p21-p13)
* Spinocerebellar ataxia 25 - SCA25
Spinocerebellar ataxia 26 - (AD)
13.24
15732118
? - (19p13.3)
* Spinocerebellar ataxia 26 - SCA26
Spinocerebellar ataxia 27 - ( )
13.25
12489043
15470364
FGF14 (13q34)
fibroblast growth factor 14
* Spinocerebellar ataxia 27 - SCA27
Spinocerebellar ataxia 28 - (AD)
13.26
16251216
20208537
BEAN (16q21)
Brain expressed, associated with Nedd42
* Spinocerebellar ataxia 28
* spinocerebellar ataxia-31 - SCA31
Spinocerebellar ataxia 29 - (AD)
13.27
15623688
? - (3p26)
* Cerebellar ataxia, congenital, nonprogressive, autosomal dominant - SCA29
Spinocerebellar ataxia 31 - (AD)
13.28
10822439
19878914
BEAN (16q21)
Brain expressed, associated with Nedd42
TK2 (16q22-q23)
Thymidine kinase 2, mitochondrial
* Spinocerebellar ataxia 28
* spinocerebellar ataxia-31 - SCA31
* Mitochondrial dna depletion syndrome, myopathic form - MTDPS3
Episodic ataxia type-1 , with myokimia - (AD)
13.29
17575281
7842011
8845167
KCNA1 (12p13)
potassium voltage-gated channel, shaker-related subfamily, member 1
* Episodic ataxia with myokymia - EA1
Episodic ataxia type-2 ,and familial hemiplegic migraine - (AD)
13.30
17575281
8898206
9302278
CACNA1A (19p13.2-p13.1)
calcium channel, voltage-dependent, P/Q type, alpha 1A subunit
* Acetazolamide-responsive hereditary paroxymal cerebellar ataxia - APCA
* Cerebellar ataxia, paroxymal, acetazolamide-responsive - CAPA
* Cerebellar ataxia, pure - CACNA1A
* Episodic ataxia, type 2 - EA2
* Hemiplegic migraine, familial - FHM1
* Migraine familial hemiplegic 1, with progressive cerebellar ataxia - MHP1
* Spinocerebellar ataxia 6 - SCA6
Episodic ataxia type-3 - (AD)
13.31
11673600
17575281
? - (1q42)
* episodic ataxia type-3 - EA3
Episodic ataxia type-5 - (AD)
13.32
10762541
CACNB4 (2q22-q23)
calcium channel, voltage-dependent, beta 4 subunit
* episodic ataxia type 5, included - EA5
Episodic ataxia type-6 - (AD)
13.33
16116111
19139306
SLC1A3 (5p13)
EAAT1 (excitatory amino acid transporter type 1)
* episodic ataxia type 6 - EA6
Episodic ataxia type-7 - (AD)
13.34
17502476
? - (19q13)
* episodic ataxia type-7 - EA7
Acetazolamide responsive hereditary paroxysmal cerebellar ataxia - (AD)
13.35
7695228
7757080
CACNA1A (19p13.2-p13.1)
calcium channel, voltage-dependent, P/Q type, alpha 1A subunit
* Acetazolamide-responsive hereditary paroxymal cerebellar ataxia - APCA
* Cerebellar ataxia, paroxymal, acetazolamide-responsive - CAPA
* Cerebellar ataxia, pure - CACNA1A
* Episodic ataxia, type 2 - EA2
* Hemiplegic migraine, familial - FHM1
* Migraine familial hemiplegic 1, with progressive cerebellar ataxia - MHP1
* Spinocerebellar ataxia 6 - SCA6
Friedreich ataxia 1 - (AR)
13.36
10543403
2899844
8596916
FXN (9q13-q21.1)
frataxin
* Friedreich ataxia - FRDA
* Friedreich ataxia with retained reflexes - FARR
Friedreich ataxia 2 - (AR)
13.37
11523563
? - (9p23-p11)
* friedreich ataxia 2 - FRDA2
Friedreich ataxia with selective vitamin E deficiency - (AR)
13.38
7566022
7719340
8252047
TTPA (8q13.1-q13.3)
tocopherol (alpha) transfer protein (ataxia (Friedreich-like) with vitamin E deficiency)
* Ataxia with isolated vitamin E deficiency - TTPA
* Ataxia, Friedreich-like, with selective vitamin E deficiency - AVED
Infantile-onset spinocerebellar ataxia - (AR)
13.39
16135556
9027505
PEO1 (10q23.3-q24.3)
twinkle/twinky (mt DNA helicase)
* Progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal - PEO3A
* Spinocerebellar ataxia, infantile-onset, with sensory neuropathy - IOSCA
Ataxia oculomotor apraxia 1 - (AR)
13.40
11586299
11586300
APTX (9p13.3)
aprataxin
* Ataxia, early-onset, with oculomotor apraxia and hypoalbuminemia - EAOH
Ataxia oculomotor Apraxia 2 - (AR)
13.41
14770181
SETX (9q34.13)
senataxin
* ATAXIA-oculomotor apraxia 2 - AOA2
* Neuropathy, distal hereditary motor, with pyramidal features - ALS4
* Spinocerebellar ataxia, autosomal recessive 1 - SCAR1
Autosomal recessive spinocerebellar ataxia, 3 - (AR)
13.42
11175288
? - (6p23-p21)
* Spinocerebellar ataxia, autosomal recessive 3 - SCAR3
Autosomal recessive spinocerebellar ataxia, 4 - (AR)
13.43
Abstract
? - (1p36)
* Spinocerebellar ataxia, autosomal recessive 4 - SCAR4
Autosomal recessive spinocerebellar ataxia, 5 - (AR)
13.44
2002
? - (15q24-q26)
* Spinocerebellar ataxia, autosomal recessive 5 - SCAR5
Autosomal recessive spinocerebellar ataxia, 6 - (AR)
13.45
12811539
? - (20q11-q13)
* Spinocerebellar ataxia, autosomal recessive 6 - SCAR6
Autosomal recessive spinocerebellar ataxia, 7 - (AR)
13.46
15520412
? - (11p15)
* Spinocerebellar ataxia, autosomal recessive 7 - SCAR7
Autosomal recessive spinocerebellar ataxia, 8 - (AR)
13.47
17159980
SYNE1 (6q25)
spectrin repeat containing, nuclear envelope 1 (nesprin 1)
* Dilated cardiomyopathy with nesprin-1 defect
* Emery-dreifuss muscular dystrophy 4 - EDMD4
* Spinocerebellar ataxia, autosomal recessive 8 - SCAR8
Autosomal recessive spinocerebellar ataxia, 9 (with ubiquinone deficiency) - (AR)
13.48
18319072
18319074
CABC1 (1q42.13)
chaperone, ABC1 activity of bc1 complex homolog (S. pombe)
* spinocerebellar ataxia, autosomal recessive 9 - SCAR9
Spinocerebellar ataxia with axonal neuropathy - (AR)
13.49
12244316
TDP1 (14q31-q32)
Tyrosyl-DNA phosphodiesterase 1
* spinocerebellar ataxia, autosomal recessive, with axonal neuropathy - SCAN1
Marinesco-Sj**gren syndrome (cerebellar ataxia with cataract and myopathy) - (AR)
13.50
14512967
16282977
16282978
SIL1 (5q31)
SIL1 homolog, endoplasmic reticulum chaperone
* Marinesco-Sjogren syndrome - MSS
Sensory ataxic neuropathy, dysarthria and ophtalmoparesis - (AR)
13.51
14745080
16080118
POLG (15q25)
polymerase (DNA directed), gamma
* Progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal - PEOA1
* Sensory ataxic neuropathy, dysarthria, and ophthalmoparesis - SANDO
* spinocerebellar ataxia with epilepsy, included - SCAE
Ataxia telangiectasia - (AR)
13.52
3200306
7792600
ATM (11q22.3)
ataxia telangiectasia mutated
* ataxia telangiectasia - AT
Ataxia telangiectasia-like disorder - (AR)
13.53
10612394
15574463
MRE11A (11q21)
MRE11 meiotic recombination 11 homolog A
* ataxia telangiectasia-like disorder - ATLD
Autosomal recessive spastic ataxia of Charlevoix-Saguenay - (AR)
13.54
10610707
10655055
9829277
SACS (13q12)
sacsin
* Autosomal recessive spastic ataxia of Charlevoix-Saguenay - ARSACS
* Spastic ataxia, Charlevoix-Saguenay type - SACS
Refsum disease-1 (adult) - (AR)
13.55
8595422
9326939
9326940
PHYH (10q13)
phytanoyl-CoA 2-hydroxylase
* Refsum disease, adult - RD
Refsum disease-2 (adult) - (AR)
13.56
12522768
PEX7 (6q21-q22)
peroxisomal biogenesis factor 7
* Refsum disease, adult - RD
Abetalipoproteinemia - (AR)
13.57
8361539
8533758
MTTP (4q23)
microsomal triglyceride transfer protein
* abetalipoproteinemia - ABL