2-165294040-A-AAAATT

Variant names:

• chr2-165294040-A-AAAATT
• rs780674346
• ENST00000283256:c.-147_-146insAAATT

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The ENST00000283256(SCN2A):​c.-147_-146insAAATT variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000096 (0 hom., cov: 11)
  • Exomes 𝑓: 0.000021 (0 hom.)
• Consequence: SCN2A ENST00000283256 5_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.275

Genes affected

SCN2A (HGNC:10588): (sodium voltage-gated channel alpha subunit 2) Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit with four repeat domains, each of which is composed of six membrane-spanning segments, and one or more regulatory beta subunits. Voltage-gated sodium channels function in the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel alpha subunit gene family. Allelic variants of this gene are associated with seizure disorders and autism spectrum disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BS2: High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCN2A	NM_001040142.2	c.-51-1733_-51-1732insAAATT		intron_variant	Intron 1 of 26	ENST00000375437.7	NP_001035232.1
SCN2A	NM_001371246.1	c.-51-1733_-51-1732insAAATT		intron_variant	Intron 1 of 26	ENST00000631182.3	NP_001358175.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCN2A	ENST00000283256	c.-147_-146insAAATT		5_prime_UTR_variant	Exon 1 of 27	1		ENSP00000283256.6
SCN2A	ENST00000375437.7	c.-51-1733_-51-1732insAAATT		intron_variant	Intron 1 of 26	5	NM_001040142.2	ENSP00000364586.2
SCN2A	ENST00000631182.3	c.-51-1733_-51-1732insAAATT		intron_variant	Intron 1 of 26	5	NM_001371246.1	ENSP00000486885.1
SCN2A	ENST00000424833.5	c.-51-1733_-51-1732insAAATT		intron_variant	Intron 1 of 10	1		ENSP00000406454.2

Frequencies

GnomAD3 genomes AF: 0.0000965 AC: 10 AN: 103618 Hom.: 0 Cov.: 11

Gnomad AFR AF: 0.00

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: 0.000289

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000152

Gnomad OTH AF: 0.000744

GnomAD4 exome AF: 0.0000209 AC: 11 AN: 526676 Hom.: 0 Cov.: 0 AF XY: 0.0000163 AC XY: 4 AN XY: 244866

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000228

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000965 AC: 10 AN: 103654 Hom.: 0 Cov.: 11 AF XY: 0.0000626 AC XY: 3 AN XY: 47916

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000289

Gnomad4 NFE AF: 0.000152

Gnomad4 OTH AF: 0.000742

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs780674346; hg19: chr2-166150550;