17-28957525-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_178860.5(SEZ6):​c.2317G>A​(p.Asp773Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000211 in 1,612,808 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

SEZ6
NM_178860.5 missense

Scores

1
13
5

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.82
Variant links:
Genes affected
SEZ6 (HGNC:15955): (seizure related 6 homolog) The protein encoded by this gene is thought to contain five cysteine-rich motifs that are similar to sushi domains, as well as two domains similar to the amino terminal half of the CUB (for complement C1r/C1s, Uegf, Bmp1) domain. Mutations in this gene have been associated with febrile seizures. [provided by RefSeq, Jul 2016]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SEZ6NM_178860.5 linkuse as main transcriptc.2317G>A p.Asp773Asn missense_variant 12/17 ENST00000317338.17 NP_849191.3 Q53EL9-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SEZ6ENST00000317338.17 linkuse as main transcriptc.2317G>A p.Asp773Asn missense_variant 12/171 NM_178860.5 ENSP00000312942.11 Q53EL9-1

Frequencies

GnomAD3 genomes
AF:
0.0000264
AC:
4
AN:
151428
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000243
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000442
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000405
AC:
1
AN:
247030
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
134174
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000205
AC:
30
AN:
1461380
Hom.:
0
Cov.:
33
AF XY:
0.0000138
AC XY:
10
AN XY:
726958
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000243
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000264
AC:
4
AN:
151428
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
73902
show subpopulations
Gnomad4 AFR
AF:
0.0000243
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000442
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000113

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsSep 03, 2024The c.2317G>A (p.D773N) alteration is located in exon 12 (coding exon 12) of the SEZ6 gene. This alteration results from a G to A substitution at nucleotide position 2317, causing the aspartic acid (D) at amino acid position 773 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.33
BayesDel_addAF
Benign
-0.18
T
BayesDel_noAF
Benign
-0.39
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Benign
0.079
.;T;T;.;T
Eigen
Uncertain
0.58
Eigen_PC
Uncertain
0.54
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.92
D;D;D;D;D
M_CAP
Uncertain
0.094
D
MetaRNN
Uncertain
0.68
D;D;D;D;D
MetaSVM
Uncertain
-0.25
T
MutationAssessor
Uncertain
2.2
M;.;M;.;.
PrimateAI
Uncertain
0.61
T
PROVEAN
Uncertain
-4.2
D;.;.;.;D
REVEL
Uncertain
0.42
Sift
Uncertain
0.026
D;.;.;.;D
Sift4G
Uncertain
0.023
D;D;D;D;D
Polyphen
1.0
D;.;D;.;.
Vest4
0.61
MutPred
0.56
Loss of disorder (P = 0.1205);.;Loss of disorder (P = 0.1205);Loss of disorder (P = 0.1205);Loss of disorder (P = 0.1205);
MVP
0.80
MPC
0.93
ClinPred
0.99
D
GERP RS
5.4
Varity_R
0.54
gMVP
0.55

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs914000193; hg19: chr17-27284543; COSMIC: COSV57977788; COSMIC: COSV57977788; API