Incidental Mutation 'R9050:Scn8a'
ID 688316
Institutional Source Beutler Lab
Gene Symbol Scn8a
Ensembl Gene ENSMUSG00000023033
Gene Name sodium channel, voltage-gated, type VIII, alpha
Synonyms nmf335, nmf58, NMF335, C630029C19Rik, nur14, mnd2, seal, mnd-2, nmf2, med, ataxia 3, NaCh6, Nav1.6, motor end-plate disease
MMRRC Submission 068876-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.790) question?
Stock # R9050 (G1)
Quality Score 225.009
Status Validated
Chromosome 15
Chromosomal Location 100767739-100943819 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 100906161 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Isoleucine at position 785 (V785I)
Ref Sequence ENSEMBL: ENSMUSP00000143879 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000082209] [ENSMUST00000108908] [ENSMUST00000108909] [ENSMUST00000108910] [ENSMUST00000200963] [ENSMUST00000201518] [ENSMUST00000201549]
AlphaFold no structure available at present
Predicted Effect possibly damaging
Transcript: ENSMUST00000082209
AA Change: V785I

PolyPhen 2 Score 0.801 (Sensitivity: 0.84; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000080842
Gene: ENSMUSG00000023033
AA Change: V785I

DomainStartEndE-ValueType
Pfam:Ion_trans 131 422 7.4e-82 PFAM
low complexity region 423 452 N/A INTRINSIC
Pfam:Na_trans_cytopl 499 700 3.5e-72 PFAM
low complexity region 701 712 N/A INTRINSIC
Pfam:Ion_trans 750 985 2.2e-57 PFAM
Pfam:Na_trans_assoc 989 1191 2e-59 PFAM
Pfam:Ion_trans 1195 1472 6.2e-69 PFAM
Pfam:Ion_trans 1519 1775 1.2e-56 PFAM
IQ 1892 1914 1.2e-4 SMART
low complexity region 1953 1972 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000108908
AA Change: V785I

PolyPhen 2 Score 0.063 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000104536
Gene: ENSMUSG00000023033
AA Change: V785I

DomainStartEndE-ValueType
Pfam:Ion_trans 72 322 1.9e-76 PFAM
low complexity region 367 378 N/A INTRINSIC
Pfam:Ion_trans 451 640 1.1e-47 PFAM
Pfam:Na_trans_assoc 655 872 1.9e-71 PFAM
Pfam:Ion_trans 898 1127 4.4e-59 PFAM
PDB:1BYY|A 1129 1181 7e-30 PDB
Pfam:Ion_trans 1220 1429 1.9e-51 PFAM
Pfam:PKD_channel 1281 1436 5.6e-7 PFAM
IQ 1558 1580 1.2e-4 SMART
low complexity region 1619 1638 N/A INTRINSIC
Predicted Effect
SMART Domains Protein: ENSMUSP00000104537
Gene: ENSMUSG00000023033
AA Change: V795I

DomainStartEndE-ValueType
Pfam:Ion_trans 72 322 2.2e-76 PFAM
low complexity region 335 364 N/A INTRINSIC
Pfam:DUF3451 390 616 8.7e-70 PFAM
Pfam:Ion_trans 697 886 1.3e-47 PFAM
Pfam:Na_trans_assoc 901 1118 2.3e-71 PFAM
Pfam:Ion_trans 1144 1186 9.7e-10 PFAM
Pfam:Ion_trans 1182 1332 1.7e-31 PFAM
PDB:1BYY|A 1334 1386 2e-29 PDB
Pfam:Ion_trans 1425 1634 2.3e-51 PFAM
Pfam:PKD_channel 1486 1641 6.6e-7 PFAM
IQ 1763 1785 1.2e-4 SMART
low complexity region 1824 1843 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000108910
AA Change: V785I

PolyPhen 2 Score 0.063 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000104538
Gene: ENSMUSG00000023033
AA Change: V785I

DomainStartEndE-ValueType
Pfam:Ion_trans 160 410 2.5e-76 PFAM
low complexity region 423 452 N/A INTRINSIC
Pfam:DUF3451 478 704 9.6e-70 PFAM
Pfam:Ion_trans 785 974 1.4e-47 PFAM
Pfam:Na_trans_assoc 989 1206 2.5e-71 PFAM
Pfam:Ion_trans 1232 1461 5.7e-59 PFAM
PDB:1BYY|A 1463 1515 4e-29 PDB
Pfam:Ion_trans 1554 1763 2.5e-51 PFAM
Pfam:PKD_channel 1615 1770 7.1e-7 PFAM
IQ 1892 1914 1.2e-4 SMART
low complexity region 1953 1972 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000200963
AA Change: V785I

PolyPhen 2 Score 0.400 (Sensitivity: 0.89; Specificity: 0.89)
SMART Domains Protein: ENSMUSP00000144371
Gene: ENSMUSG00000023033
AA Change: V785I

DomainStartEndE-ValueType
Pfam:Ion_trans 131 422 4.1e-80 PFAM
low complexity region 423 452 N/A INTRINSIC
Pfam:Na_trans_cytopl 499 700 2.5e-69 PFAM
low complexity region 701 712 N/A INTRINSIC
Pfam:Ion_trans 750 985 1.2e-55 PFAM
Pfam:Na_trans_assoc 989 1191 9.1e-57 PFAM
Pfam:Ion_trans 1195 1274 7.6e-16 PFAM
Pfam:Ion_trans 1270 1431 2.6e-33 PFAM
Pfam:Ion_trans 1478 1734 6.5e-55 PFAM
IQ 1851 1873 6e-7 SMART
low complexity region 1912 1931 N/A INTRINSIC
Predicted Effect possibly damaging
Transcript: ENSMUST00000201518
AA Change: V785I

PolyPhen 2 Score 0.801 (Sensitivity: 0.84; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000143879
Gene: ENSMUSG00000023033
AA Change: V785I

DomainStartEndE-ValueType
Pfam:Ion_trans 131 422 8.8e-81 PFAM
low complexity region 423 452 N/A INTRINSIC
Pfam:Na_trans_cytopl 499 700 6.7e-70 PFAM
low complexity region 701 712 N/A INTRINSIC
Pfam:Ion_trans 750 804 5.3e-9 PFAM
Predicted Effect possibly damaging
Transcript: ENSMUST00000201549
AA Change: V785I

PolyPhen 2 Score 0.801 (Sensitivity: 0.84; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000144013
Gene: ENSMUSG00000023033
AA Change: V785I

DomainStartEndE-ValueType
Pfam:Ion_trans 131 422 7.4e-82 PFAM
low complexity region 423 452 N/A INTRINSIC
Pfam:Na_trans_cytopl 499 700 3.5e-72 PFAM
low complexity region 701 712 N/A INTRINSIC
Pfam:Ion_trans 750 985 2.2e-57 PFAM
Pfam:Na_trans_assoc 989 1191 2e-59 PFAM
Pfam:Ion_trans 1195 1472 6.2e-69 PFAM
Pfam:Ion_trans 1519 1775 1.2e-56 PFAM
IQ 1892 1914 1.2e-4 SMART
low complexity region 1953 1972 N/A INTRINSIC
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 100.0%
  • 10x: 99.8%
  • 20x: 99.5%
Validation Efficiency 96% (53/55)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the sodium channel alpha subunit gene family. The encoded protein forms the ion pore region of the voltage-gated sodium channel. This protein is essential for the rapid membrane depolarization that occurs during the formation of the action potential in excitable neurons. Mutations in this gene are associated with mental retardation, pancerebellar atrophy and ataxia. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2010]
PHENOTYPE: Spontaneous mutant homozygotes have ataxia, dystonia, muscular atrophy, progressive paralysis, Purkinje cell loss, in some cases severe head-tossing and for severe alleles, juvenile lethality. A mild, semidominant ENU allele causes deafness of variable penetrance and severity and mild tremor. [provided by MGI curators]
Allele List at MGI

 All alleles(22) : Targeted, knock-out(1) Targeted, other(1) Gene trapped(6) Transgenic(1) Spontaneous(5) Chemically induced(8)

Other mutations in this stock
Total: 55 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abhd5 T C 9: 122,208,605 (GRCm39) Y332H probably benign Het
Apoc3 A G 9: 46,144,592 (GRCm39) F77L probably benign Het
Atp5f1c A T 2: 10,069,049 (GRCm39) D99E probably damaging Het
Atxn3 A T 12: 101,924,387 (GRCm39) probably benign Het
Calcoco1 A G 15: 102,618,400 (GRCm39) V463A probably damaging Het
Cby3 A G 11: 50,248,617 (GRCm39) T20A possibly damaging Het
Cdhr2 A G 13: 54,883,133 (GRCm39) D1256G probably benign Het
Cep350 A T 1: 155,738,687 (GRCm39) D2385E possibly damaging Het
Clec9a G C 6: 129,396,561 (GRCm39) A170P possibly damaging Het
Col5a3 C T 9: 20,697,691 (GRCm39) G871S probably damaging Het
Fmo4 A G 1: 162,635,099 (GRCm39) S159P probably benign Het
Gabbr2 A G 4: 46,798,659 (GRCm39) F272L probably benign Het
Glp1r G A 17: 31,137,892 (GRCm39) G108S probably damaging Het
Herpud1 T C 8: 95,117,454 (GRCm39) S13P probably benign Het
Hps5 T C 7: 46,422,607 (GRCm39) D574G probably benign Het
Il7 A G 3: 7,669,170 (GRCm39) V22A possibly damaging Het
Kmt5c A G 7: 4,745,281 (GRCm39) T91A probably benign Het
Mrpl39 A C 16: 84,531,844 (GRCm39) probably benign Het
Mtr T C 13: 12,231,748 (GRCm39) D652G probably null Het
Neb C T 2: 52,079,901 (GRCm39) V5768M probably damaging Het
Ngef G A 1: 87,431,010 (GRCm39) P269L probably damaging Het
Nicol1 G C 5: 34,140,874 (GRCm39) A29P unknown Het
Nmrk1 T A 19: 18,618,539 (GRCm39) M74K probably benign Het
Obox8 A G 7: 14,066,870 (GRCm39) L58P unknown Het
Oga T C 19: 45,756,354 (GRCm39) T430A probably damaging Het
Or1o4 A G 17: 37,590,820 (GRCm39) Y164H probably damaging Het
Or2b2 A G 13: 21,887,150 (GRCm39) probably benign Het
Or2y1e T C 11: 49,218,930 (GRCm39) S231P possibly damaging Het
Or5p62 A C 7: 107,771,087 (GRCm39) L288W probably damaging Het
Pcdhb17 T G 18: 37,620,286 (GRCm39) V692G probably damaging Het
Pfas A G 11: 68,882,567 (GRCm39) V829A probably benign Het
Pramel24 A T 4: 143,453,329 (GRCm39) T146S probably benign Het
Pth A G 7: 112,985,043 (GRCm39) V110A probably benign Het
Rabggta T A 14: 55,959,056 (GRCm39) Q37L probably benign Het
Rin3 A G 12: 102,335,738 (GRCm39) T550A probably damaging Het
Sec24d T C 3: 123,144,374 (GRCm39) V617A probably benign Het
Slc47a1 T C 11: 61,235,160 (GRCm39) I558V probably benign Het
Slc6a15 A T 10: 103,252,516 (GRCm39) M560L possibly damaging Het
Slfn9 G A 11: 82,879,120 (GRCm39) T3I probably benign Het
Spag9 A G 11: 93,935,294 (GRCm39) H35R probably damaging Het
Spats2 G T 15: 99,110,010 (GRCm39) R469L possibly damaging Het
Sprr2b CTGAGCCTTGTCCTCCTCCAAAGTGCCCTGAGCCTTGTCCTCCCCCAGTATGCTGTGAGCCTTGTCCTCCTCCAAAGTGCCCTGAGCCTTGTCCTCCCCCAGTATGCTGTGAGCCTTGTCCTCC CTGAGCCTTGTCCTCCTCCAAAGTGCCCTGAGCCTTGTCCTCCCCCAGTATGCTGTGAGCCTTGTCCTCC 3: 92,224,826 (GRCm39) probably benign Het
Ssx2ip C T 3: 146,144,512 (GRCm39) S592L possibly damaging Het
Ston1 A G 17: 88,944,228 (GRCm39) T545A probably benign Het
Suz12 C T 11: 79,913,023 (GRCm39) L379F probably damaging Het
Tbc1d24 C A 17: 24,404,899 (GRCm39) V82L probably benign Het
Tbc1d24 A T 17: 24,404,898 (GRCm39) V82E possibly damaging Het
Thada A G 17: 84,736,629 (GRCm39) I884T probably damaging Het
Tln1 C A 4: 43,549,786 (GRCm39) E542* probably null Het
Togaram2 T C 17: 72,007,878 (GRCm39) L401P probably damaging Het
Ttbk2 A T 2: 120,637,319 (GRCm39) N115K probably benign Het
Tubgcp4 G A 2: 121,004,079 (GRCm39) S40N probably benign Het
Wrn T C 8: 33,833,021 (GRCm39) D157G probably damaging Het
Zer1 A T 2: 30,001,294 (GRCm39) F70Y probably damaging Het
Zfp791 T C 8: 85,837,334 (GRCm39) I177V possibly damaging Het
Other mutations in Scn8a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00230:Scn8a APN 15 100,853,413 (GRCm39) unclassified probably benign
IGL00979:Scn8a APN 15 100,853,287 (GRCm39) unclassified probably benign
IGL01339:Scn8a APN 15 100,930,082 (GRCm39) missense probably benign
IGL01992:Scn8a APN 15 100,866,938 (GRCm39) missense probably damaging 1.00
IGL02215:Scn8a APN 15 100,927,453 (GRCm39) splice site probably null
IGL02311:Scn8a APN 15 100,911,164 (GRCm39) missense probably damaging 0.97
IGL02404:Scn8a APN 15 100,937,611 (GRCm39) missense probably damaging 1.00
IGL02652:Scn8a APN 15 100,911,357 (GRCm39) missense probably damaging 0.98
IGL02690:Scn8a APN 15 100,868,135 (GRCm39) missense probably damaging 1.00
IGL02704:Scn8a APN 15 100,905,943 (GRCm39) missense possibly damaging 0.94
IGL03084:Scn8a APN 15 100,915,053 (GRCm39) missense probably damaging 1.00
IGL03108:Scn8a APN 15 100,872,496 (GRCm39) missense probably benign
IGL03224:Scn8a APN 15 100,933,520 (GRCm39) missense probably damaging 1.00
dan UTSW 15 100,933,505 (GRCm39) nonsense probably null
nymph UTSW 15 100,933,527 (GRCm39) missense probably damaging 1.00
Tremord UTSW 15 100,911,385 (GRCm39) missense probably damaging 1.00
3-1:Scn8a UTSW 15 100,937,820 (GRCm39) missense probably benign 0.04
PIT4280001:Scn8a UTSW 15 100,855,370 (GRCm39) missense probably damaging 1.00
PIT4508001:Scn8a UTSW 15 100,927,573 (GRCm39) missense probably damaging 0.98
R0010:Scn8a UTSW 15 100,911,454 (GRCm39) missense probably damaging 1.00
R0010:Scn8a UTSW 15 100,911,454 (GRCm39) missense probably damaging 1.00
R0254:Scn8a UTSW 15 100,916,245 (GRCm39) missense probably damaging 1.00
R0412:Scn8a UTSW 15 100,906,187 (GRCm39) splice site probably benign
R0538:Scn8a UTSW 15 100,933,505 (GRCm39) nonsense probably null
R0539:Scn8a UTSW 15 100,914,449 (GRCm39) missense probably damaging 1.00
R0631:Scn8a UTSW 15 100,933,418 (GRCm39) missense probably damaging 1.00
R0726:Scn8a UTSW 15 100,870,711 (GRCm39) missense probably damaging 1.00
R0945:Scn8a UTSW 15 100,913,668 (GRCm39) missense possibly damaging 0.54
R0967:Scn8a UTSW 15 100,933,527 (GRCm39) missense probably damaging 1.00
R1164:Scn8a UTSW 15 100,938,043 (GRCm39) missense probably benign 0.06
R1283:Scn8a UTSW 15 100,867,052 (GRCm39) missense possibly damaging 0.82
R1368:Scn8a UTSW 15 100,933,422 (GRCm39) missense probably damaging 1.00
R1633:Scn8a UTSW 15 100,927,696 (GRCm39) missense probably benign 0.01
R1669:Scn8a UTSW 15 100,909,001 (GRCm39) missense probably damaging 1.00
R1694:Scn8a UTSW 15 100,853,409 (GRCm39) nonsense probably null
R1735:Scn8a UTSW 15 100,913,742 (GRCm39) missense possibly damaging 0.94
R1773:Scn8a UTSW 15 100,937,496 (GRCm39) missense probably damaging 0.97
R1940:Scn8a UTSW 15 100,868,085 (GRCm39) missense probably benign 0.22
R1996:Scn8a UTSW 15 100,922,260 (GRCm39) missense probably damaging 1.00
R2107:Scn8a UTSW 15 100,916,244 (GRCm39) missense probably damaging 0.99
R2251:Scn8a UTSW 15 100,914,987 (GRCm39) missense probably benign 0.02
R2516:Scn8a UTSW 15 100,867,043 (GRCm39) missense probably benign 0.05
R2917:Scn8a UTSW 15 100,937,613 (GRCm39) missense probably damaging 1.00
R3417:Scn8a UTSW 15 100,869,549 (GRCm39) splice site probably benign
R3896:Scn8a UTSW 15 100,933,379 (GRCm39) missense probably benign
R4024:Scn8a UTSW 15 100,937,674 (GRCm39) missense probably damaging 1.00
R4050:Scn8a UTSW 15 100,911,294 (GRCm39) nonsense probably null
R4193:Scn8a UTSW 15 100,869,484 (GRCm39) missense probably damaging 1.00
R4212:Scn8a UTSW 15 100,854,954 (GRCm39) missense possibly damaging 0.88
R4358:Scn8a UTSW 15 100,838,014 (GRCm39) missense probably benign 0.00
R4396:Scn8a UTSW 15 100,870,711 (GRCm39) missense probably damaging 1.00
R4428:Scn8a UTSW 15 100,881,784 (GRCm39) missense probably damaging 1.00
R4452:Scn8a UTSW 15 100,854,972 (GRCm39) missense possibly damaging 0.95
R4631:Scn8a UTSW 15 100,914,384 (GRCm39) nonsense probably null
R4693:Scn8a UTSW 15 100,913,572 (GRCm39) missense probably damaging 1.00
R4765:Scn8a UTSW 15 100,938,352 (GRCm39) missense probably benign 0.07
R4777:Scn8a UTSW 15 100,913,832 (GRCm39) missense probably damaging 1.00
R4949:Scn8a UTSW 15 100,927,663 (GRCm39) missense probably damaging 1.00
R4997:Scn8a UTSW 15 100,854,935 (GRCm39) missense probably damaging 1.00
R5246:Scn8a UTSW 15 100,908,938 (GRCm39) missense probably damaging 1.00
R5566:Scn8a UTSW 15 100,872,415 (GRCm39) missense probably damaging 1.00
R5875:Scn8a UTSW 15 100,870,703 (GRCm39) nonsense probably null
R6031:Scn8a UTSW 15 100,881,865 (GRCm39) missense probably damaging 1.00
R6031:Scn8a UTSW 15 100,881,865 (GRCm39) missense probably damaging 1.00
R6057:Scn8a UTSW 15 100,872,548 (GRCm39) missense possibly damaging 0.94
R6114:Scn8a UTSW 15 100,938,477 (GRCm39) missense probably damaging 0.99
R6362:Scn8a UTSW 15 100,837,996 (GRCm39) splice site probably null
R6535:Scn8a UTSW 15 100,857,588 (GRCm39) intron probably benign
R6677:Scn8a UTSW 15 100,866,953 (GRCm39) missense probably damaging 1.00
R6687:Scn8a UTSW 15 100,872,508 (GRCm39) missense probably benign 0.12
R6701:Scn8a UTSW 15 100,937,977 (GRCm39) missense probably damaging 1.00
R6719:Scn8a UTSW 15 100,908,896 (GRCm39) critical splice acceptor site probably null
R6739:Scn8a UTSW 15 100,913,836 (GRCm39) missense possibly damaging 0.82
R6769:Scn8a UTSW 15 100,933,445 (GRCm39) missense probably benign
R6786:Scn8a UTSW 15 100,930,096 (GRCm39) missense probably benign 0.00
R6849:Scn8a UTSW 15 100,853,468 (GRCm39) splice site probably null
R7108:Scn8a UTSW 15 100,937,659 (GRCm39) missense probably benign 0.01
R7215:Scn8a UTSW 15 100,927,711 (GRCm39) missense possibly damaging 0.80
R7217:Scn8a UTSW 15 100,868,108 (GRCm39) missense probably benign 0.00
R7219:Scn8a UTSW 15 100,866,984 (GRCm39) missense probably damaging 1.00
R7356:Scn8a UTSW 15 100,855,460 (GRCm39) missense probably damaging 1.00
R7479:Scn8a UTSW 15 100,853,358 (GRCm39) missense probably damaging 0.99
R7816:Scn8a UTSW 15 100,908,917 (GRCm39) missense possibly damaging 0.63
R7985:Scn8a UTSW 15 100,914,843 (GRCm39) splice site probably null
R8112:Scn8a UTSW 15 100,927,718 (GRCm39) missense probably benign 0.27
R8263:Scn8a UTSW 15 100,881,736 (GRCm39) missense probably damaging 1.00
R8305:Scn8a UTSW 15 100,938,387 (GRCm39) missense probably benign 0.01
R8489:Scn8a UTSW 15 100,867,014 (GRCm39) missense probably damaging 1.00
R8983:Scn8a UTSW 15 100,900,030 (GRCm39) missense possibly damaging 0.81
R9034:Scn8a UTSW 15 100,927,642 (GRCm39) missense probably damaging 0.98
R9240:Scn8a UTSW 15 100,915,068 (GRCm39) nonsense probably null
R9249:Scn8a UTSW 15 100,914,456 (GRCm39) missense probably benign 0.00
R9462:Scn8a UTSW 15 100,930,159 (GRCm39) missense
R9599:Scn8a UTSW 15 100,911,172 (GRCm39) missense probably damaging 1.00
R9609:Scn8a UTSW 15 100,834,407 (GRCm39) missense possibly damaging 0.91
R9653:Scn8a UTSW 15 100,937,947 (GRCm39) missense probably damaging 1.00
R9794:Scn8a UTSW 15 100,933,332 (GRCm39) missense probably benign 0.00
X0066:Scn8a UTSW 15 100,937,962 (GRCm39) missense probably damaging 1.00
X0066:Scn8a UTSW 15 100,937,961 (GRCm39) missense probably damaging 1.00
Z1176:Scn8a UTSW 15 100,931,399 (GRCm39) missense probably damaging 1.00
Z1177:Scn8a UTSW 15 100,938,103 (GRCm39) missense probably benign 0.00
Predicted Primers PCR Primer
(F):5'- GCCAATACTTTCCTCATCTGGG -3'
(R):5'- TCTACGAGGCGACTTCAGAG -3'

Sequencing Primer
(F):5'- ATCTGGGAGTGTCACCCCTAC -3'
(R):5'- CGACTTCAGAGTTCTGCAGAG -3'
Posted On 2021-11-19