17-28956229-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_178860.5(SEZ6):c.2882G>A(p.Arg961His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000404 in 1,313,854 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R961C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 19)

Exomes 𝑓: 0.00041 ( 0 hom. )

Consequence

SEZ6
NM_178860.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.00100

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]

SEZ6 links:

LOC105371716 (HGNC:):

LOC105371716 links:

PIPOX (HGNC:17804): (pipecolic acid and sarcosine oxidase) Enables L-pipecolate oxidase activity and sarcosine oxidase activity. Involved in L-lysine catabolic process to acetyl-CoA via L-pipecolate. Located in peroxisome. [provided by Alliance of Genome Resources, Apr 2022]

PIPOX links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.045876056).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SEZ6	NM_178860.5 linkuse as main transcript	c.2882G>A	p.Arg961His	missense_variant	16/17	ENST00000317338.17
LOC105371716	XR_001752822.2 linkuse as main transcript	n.1807+2821C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SEZ6	ENST00000317338.17 linkuse as main transcript	c.2882G>A	p.Arg961His	missense_variant	16/17	1	NM_178860.5	A2	Q53EL9-1

Frequencies

GnomAD3 genomes

AF:

0.000267

AC:

AN:

71042

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000183

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:

0.000464

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000204

AC:

AN:

137144

Hom.:

AF XY:

0.000158

AC XY:

AN XY:

75838

show subpopulations

Gnomad AFR exome

AF:

0.000121

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000414

Gnomad OTH exome

AF:

0.000332

GnomAD4 exome

AF:

0.000412

AC:

512

AN:

1242812

Hom.:

Cov.:

AF XY:

0.000406

AC XY:

244

AN XY:

601084

show subpopulations

Gnomad4 AFR exome

AF:

0.0000336

Gnomad4 AMR exome

AF:

0.0000314

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000429

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000496

Gnomad4 OTH exome

AF:

0.000359

GnomAD4 genome

AF:

0.000267

AC:

AN:

71042

Hom.:

Cov.:

AF XY:

0.000347

AC XY:

AN XY:

34584

show subpopulations

Gnomad4 AFR

AF:

0.000183

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:

0.000464

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000209

Hom.:

ExAC

AF:

0.000101

AC:

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 submitter

clinical testing

Ambry Genetics

Dec 28, 2023

The c.2882G>A (p.R961H) alteration is located in exon 16 (coding exon 16) of the SEZ6 gene. This alteration results from a G to A substitution at nucleotide position 2882, causing the arginine (R) at amino acid position 961 to be replaced by a histidine (H). 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

0.069

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.44

Cadd

Benign

Dann

Benign

0.97

Eigen

Benign

-0.59

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.038

LIST_S2

Benign

0.79

T;T;T;T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.046

T;T;T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

1.8

L;.;L;.;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.72

N;.;.;.;.

REVEL

Benign

0.11

Sift

Uncertain

0.019

D;.;.;.;.

Sift4G

Benign

0.40

T;T;T;T;T

Polyphen

0.77

P;.;P;.;.

Vest4

0.19

MVP

0.28

MPC

0.33

ClinPred

0.043

GERP RS

-3.4

Varity_R

0.074

gMVP

0.48

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over