Incidental Mutation 'R4358:Scn8a'
ID 324677
Institutional Source Beutler Lab
Gene Symbol Scn8a
Ensembl Gene ENSMUSG00000023033
Gene Name sodium channel, voltage-gated, type VIII, alpha
Synonyms mnd2, C630029C19Rik, nmf58, NMF335, mnd-2, seal, motor end-plate disease, nur14, Nav1.6, med, ataxia 3, nmf2, nmf335, NaCh6
MMRRC Submission 041110-MU
Accession Numbers

Genbank: NM_001077499, NM_011323; MGI: 103169

Essential gene? Probably essential (E-score: 0.802) question?
Stock # R4358 (G1)
Quality Score 225
Status Validated
Chromosome 15
Chromosomal Location 100869858-101045938 bp(+) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) G to A at 100940133 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Alanine to Threonine at position 94 (A94T)
Ref Sequence ENSEMBL: ENSMUSP00000144223 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000082209] [ENSMUST00000096198] [ENSMUST00000108908] [ENSMUST00000108909] [ENSMUST00000108910] [ENSMUST00000200933] [ENSMUST00000200959] [ENSMUST00000200963] [ENSMUST00000201484] [ENSMUST00000201518] [ENSMUST00000201549] [ENSMUST00000202527] [ENSMUST00000202071]
AlphaFold no structure available at present
Predicted Effect probably benign
Transcript: ENSMUST00000082209
SMART Domains Protein: ENSMUSP00000080842
Gene: ENSMUSG00000023033

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: ENSMUST00000096198
AA Change: A96T

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
Predicted Effect probably benign
Transcript: ENSMUST00000108908
SMART Domains Protein: ENSMUSP00000104536
Gene: ENSMUSG00000023033

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 probably benign
Transcript: ENSMUST00000108909
SMART Domains Protein: ENSMUSP00000104537
Gene: ENSMUSG00000023033

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
SMART Domains Protein: ENSMUSP00000104538
Gene: ENSMUSG00000023033

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: ENSMUST00000200933
Predicted Effect probably benign
Transcript: ENSMUST00000200959
AA Change: A94T

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
Predicted Effect probably benign
Transcript: ENSMUST00000200963
SMART Domains Protein: ENSMUSP00000144371
Gene: ENSMUSG00000023033

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 probably benign
Transcript: ENSMUST00000201484
Predicted Effect probably benign
Transcript: ENSMUST00000201518
SMART Domains Protein: ENSMUSP00000143879
Gene: ENSMUSG00000023033

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 probably benign
Transcript: ENSMUST00000201549
SMART Domains Protein: ENSMUSP00000144013
Gene: ENSMUSG00000023033

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: ENSMUST00000202527
Predicted Effect probably benign
Transcript: ENSMUST00000202071
Meta Mutation Damage Score 0.0898 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.7%
  • 10x: 97.5%
  • 20x: 95.8%
Validation Efficiency 98% (48/49)
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: 41 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Alpk1 C T 3: 127,729,373 V7M probably damaging Het
Birc6 T A 17: 74,619,668 probably null Het
Chil3 G A 3: 106,160,499 Q117* probably null Het
Daglb T C 5: 143,473,134 probably benign Het
Dnah11 G A 12: 118,125,843 R1163* probably null Het
Ftsj3 G A 11: 106,253,676 A134V probably benign Het
G530012D18Rik G C 1: 85,577,202 probably benign Het
Gfod2 T C 8: 105,717,545 N122S possibly damaging Het
Golga4 A G 9: 118,551,878 E507G probably benign Het
Ids C A X: 70,346,344 G506C probably damaging Het
Ifna15 G T 4: 88,557,842 T135N probably benign Het
Igsf9b G A 9: 27,309,478 V47I possibly damaging Het
Kif24 A G 4: 41,413,827 probably null Het
L3hypdh A T 12: 72,077,424 D247E probably damaging Het
Lama2 A T 10: 26,984,493 N2999K probably damaging Het
Lpcat2 C A 8: 92,873,106 P234Q probably benign Het
Lrp10 C T 14: 54,468,366 R338C probably damaging Het
Mcm9 A C 10: 53,537,653 C444G probably benign Het
Mecom G A 3: 29,979,785 Q246* probably null Het
Mib1 A G 18: 10,751,844 N242S probably benign Het
Olfr13 T A 6: 43,174,226 M80K probably damaging Het
Olfr943 G A 9: 39,184,568 C127Y probably damaging Het
P3h4 A G 11: 100,413,626 F263S probably damaging Het
Pcsk1 T C 13: 75,112,719 S354P possibly damaging Het
Pms2 T A 5: 143,925,926 F617Y probably damaging Het
Prps2 T A X: 167,363,549 K176* probably null Het
Psmd13 G T 7: 140,889,505 probably benign Het
Pygl G A 12: 70,195,690 S573L probably damaging Het
Rapgef3 A G 15: 97,748,648 V794A probably benign Het
Rasgrf2 C A 13: 91,890,677 D1017Y probably damaging Het
Rb1cc1 A G 1: 6,245,637 D555G probably damaging Het
Rptor G T 11: 119,671,345 E111D probably damaging Het
Sall4 T C 2: 168,755,480 E480G probably benign Het
Scn4a G A 11: 106,348,857 probably null Het
Slc26a6 T A 9: 108,861,783 C636S probably benign Het
Slc38a11 T C 2: 65,358,116 K103R probably benign Het
Sned1 T C 1: 93,274,659 L675P probably benign Het
Spsb1 T C 4: 149,906,775 H112R probably damaging Het
Tmem132d G A 5: 127,984,341 T399M possibly damaging Het
Zfp939 A G 7: 39,473,720 noncoding transcript Het
Zfp951 T C 5: 104,814,675 K342E probably damaging Het
Other mutations in Scn8a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00230:Scn8a APN 15 100955532 unclassified probably benign
IGL00979:Scn8a APN 15 100955406 unclassified probably benign
IGL01339:Scn8a APN 15 101032201 missense probably benign
IGL01992:Scn8a APN 15 100969057 missense probably damaging 1.00
IGL02215:Scn8a APN 15 101029572 splice site probably null
IGL02311:Scn8a APN 15 101013283 missense probably damaging 0.97
IGL02404:Scn8a APN 15 101039730 missense probably damaging 1.00
IGL02652:Scn8a APN 15 101013476 missense probably damaging 0.98
IGL02690:Scn8a APN 15 100970254 missense probably damaging 1.00
IGL02704:Scn8a APN 15 101008062 missense possibly damaging 0.94
IGL03084:Scn8a APN 15 101017172 missense probably damaging 1.00
IGL03108:Scn8a APN 15 100974615 missense probably benign
IGL03224:Scn8a APN 15 101035639 missense probably damaging 1.00
dan UTSW 15 101035624 nonsense probably null
nymph UTSW 15 101035646 missense probably damaging 1.00
Tremord UTSW 15 101013504 missense probably damaging 1.00
3-1:Scn8a UTSW 15 101039939 missense probably benign 0.04
PIT4280001:Scn8a UTSW 15 100957489 missense probably damaging 1.00
PIT4508001:Scn8a UTSW 15 101029692 missense probably damaging 0.98
R0010:Scn8a UTSW 15 101013573 missense probably damaging 1.00
R0010:Scn8a UTSW 15 101013573 missense probably damaging 1.00
R0254:Scn8a UTSW 15 101018364 missense probably damaging 1.00
R0412:Scn8a UTSW 15 101008306 splice site probably benign
R0538:Scn8a UTSW 15 101035624 nonsense probably null
R0539:Scn8a UTSW 15 101016568 missense probably damaging 1.00
R0631:Scn8a UTSW 15 101035537 missense probably damaging 1.00
R0726:Scn8a UTSW 15 100972830 missense probably damaging 1.00
R0945:Scn8a UTSW 15 101015787 missense possibly damaging 0.54
R0967:Scn8a UTSW 15 101035646 missense probably damaging 1.00
R1164:Scn8a UTSW 15 101040162 missense probably benign 0.06
R1283:Scn8a UTSW 15 100969171 missense possibly damaging 0.82
R1368:Scn8a UTSW 15 101035541 missense probably damaging 1.00
R1633:Scn8a UTSW 15 101029815 missense probably benign 0.01
R1669:Scn8a UTSW 15 101011120 missense probably damaging 1.00
R1694:Scn8a UTSW 15 100955528 nonsense probably null
R1735:Scn8a UTSW 15 101015861 missense possibly damaging 0.94
R1773:Scn8a UTSW 15 101039615 missense probably damaging 0.97
R1940:Scn8a UTSW 15 100970204 missense probably benign 0.22
R1996:Scn8a UTSW 15 101024379 missense probably damaging 1.00
R2107:Scn8a UTSW 15 101018363 missense probably damaging 0.99
R2251:Scn8a UTSW 15 101017106 missense probably benign 0.02
R2516:Scn8a UTSW 15 100969162 missense probably benign 0.05
R2917:Scn8a UTSW 15 101039732 missense probably damaging 1.00
R3417:Scn8a UTSW 15 100971668 splice site probably benign
R3896:Scn8a UTSW 15 101035498 missense probably benign
R4024:Scn8a UTSW 15 101039793 missense probably damaging 1.00
R4050:Scn8a UTSW 15 101013413 nonsense probably null
R4193:Scn8a UTSW 15 100971603 missense probably damaging 1.00
R4212:Scn8a UTSW 15 100957073 missense possibly damaging 0.88
R4396:Scn8a UTSW 15 100972830 missense probably damaging 1.00
R4428:Scn8a UTSW 15 100983903 missense probably damaging 1.00
R4452:Scn8a UTSW 15 100957091 missense possibly damaging 0.95
R4631:Scn8a UTSW 15 101016503 nonsense probably null
R4693:Scn8a UTSW 15 101015691 missense probably damaging 1.00
R4765:Scn8a UTSW 15 101040471 missense probably benign 0.07
R4777:Scn8a UTSW 15 101015951 missense probably damaging 1.00
R4949:Scn8a UTSW 15 101029782 missense probably damaging 1.00
R4997:Scn8a UTSW 15 100957054 missense probably damaging 1.00
R5246:Scn8a UTSW 15 101011057 missense probably damaging 1.00
R5566:Scn8a UTSW 15 100974534 missense probably damaging 1.00
R5875:Scn8a UTSW 15 100972822 nonsense probably null
R6031:Scn8a UTSW 15 100983984 missense probably damaging 1.00
R6031:Scn8a UTSW 15 100983984 missense probably damaging 1.00
R6057:Scn8a UTSW 15 100974667 missense possibly damaging 0.94
R6114:Scn8a UTSW 15 101040596 missense probably damaging 0.99
R6362:Scn8a UTSW 15 100940115 splice site probably null
R6535:Scn8a UTSW 15 100959707 intron probably benign
R6677:Scn8a UTSW 15 100969072 missense probably damaging 1.00
R6687:Scn8a UTSW 15 100974627 missense probably benign 0.12
R6701:Scn8a UTSW 15 101040096 missense probably damaging 1.00
R6719:Scn8a UTSW 15 101011015 critical splice acceptor site probably null
R6739:Scn8a UTSW 15 101015955 missense possibly damaging 0.82
R6769:Scn8a UTSW 15 101035564 missense probably benign
R6786:Scn8a UTSW 15 101032215 missense probably benign 0.00
R6849:Scn8a UTSW 15 100955587 splice site probably null
R7108:Scn8a UTSW 15 101039778 missense probably benign 0.01
R7215:Scn8a UTSW 15 101029830 missense possibly damaging 0.80
R7217:Scn8a UTSW 15 100970227 missense probably benign 0.00
R7219:Scn8a UTSW 15 100969103 missense probably damaging 1.00
R7356:Scn8a UTSW 15 100957579 missense probably damaging 1.00
R7479:Scn8a UTSW 15 100955477 missense probably damaging 0.99
R7816:Scn8a UTSW 15 101011036 missense possibly damaging 0.63
R7985:Scn8a UTSW 15 101016962 splice site probably null
R8112:Scn8a UTSW 15 101029837 missense probably benign 0.27
R8263:Scn8a UTSW 15 100983855 missense probably damaging 1.00
R8305:Scn8a UTSW 15 101040506 missense probably benign 0.01
R8489:Scn8a UTSW 15 100969133 missense probably damaging 1.00
R8983:Scn8a UTSW 15 101002149 missense possibly damaging 0.81
R9034:Scn8a UTSW 15 101029761 missense probably damaging 0.98
R9050:Scn8a UTSW 15 101008280 missense possibly damaging 0.80
R9240:Scn8a UTSW 15 101017187 nonsense probably null
R9249:Scn8a UTSW 15 101016575 missense probably benign 0.00
R9462:Scn8a UTSW 15 101032278 missense
R9599:Scn8a UTSW 15 101013291 missense probably damaging 1.00
R9609:Scn8a UTSW 15 100936526 missense possibly damaging 0.91
R9653:Scn8a UTSW 15 101040066 missense probably damaging 1.00
R9794:Scn8a UTSW 15 101035451 missense probably benign 0.00
X0066:Scn8a UTSW 15 101040080 missense probably damaging 1.00
X0066:Scn8a UTSW 15 101040081 missense probably damaging 1.00
Z1176:Scn8a UTSW 15 101033518 missense probably damaging 1.00
Z1177:Scn8a UTSW 15 101040222 missense probably benign 0.00
Predicted Primers PCR Primer
(F):5'- ACTCCCAGGAATTGTTCTCTGC -3'
(R):5'- TGGCAGCATTGACAGTGAG -3'

Sequencing Primer
(F):5'- ACTCCTGACTGTGTGCAGG -3'
(R):5'- ACAGTGAGTCCAGGGGTC -3'
Posted On 2015-06-24