11-118166920-G-T

Position:

• chr11-118166920-G-T

Variant summary

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

The NM_004588.5(SCN2B):​c.615C>A​(p.Asp205Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. D205D) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SCN2B NM_004588.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.23

Genes affected

SCN2B (HGNC:10589): (sodium voltage-gated channel beta subunit 2) The protein encoded by this gene is the beta 2 subunit of the type II voltage-gated sodium channel. The encoded protein is involved in cell-cell adhesion and cell migration. Defects in this gene can be a cause of Brugada Syndrome, atrial fibrillation, or sudden infant death syndrome. [provided by RefSeq, Jul 2015]

ACMG classification

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	UniProt
SCN2B	NM_004588.5	c.615C>A	p.Asp205Glu	missense_variant	4/4	ENST00000278947.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SCN2B	ENST00000278947.6	c.615C>A	p.Asp205Glu	missense_variant	4/4	1	NM_004588.5	P1
SCN2B	ENST00000669850.1	n.857C>A		non_coding_transcript_exon_variant	4/4
SCN2B	ENST00000658882.1	c.*440C>A		3_prime_UTR_variant, NMD_transcript_variant	5/5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.00045	T
BayesDel_noAF	Benign	-0.24
CADD	Benign	1.5
DANN	Uncertain	0.99
DEOGEN2	Benign	0.25	T
Eigen	Benign	-0.95
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.083	N
LIST_S2	Benign	0.77	T
M_CAP	Pathogenic	0.60	D
MetaRNN	Benign	0.22	T
MetaSVM	Uncertain	0.010	D
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-0.12	N
REVEL	Uncertain	0.35
Sift	Benign	0.18	T
Sift4G	Benign	0.23	T
Polyphen		0.81	P
Vest4		0.21
MutPred		0.13		Gain of methylation at K203 (P = 0.0983);
MVP		0.91
MPC		0.84
ClinPred		0.74	D
GERP RS		-5.8
Varity_R		0.033
gMVP		0.21

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.50		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.50		Position offset: -1

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

Publications

LitVar

Other links and lift over

dbSNP: rs201971719; hg19: chr11-118037635;