8-11493006-C-T

Variant names:

• chr8-11493006-C-T
• rs76610494
• ENST00000645242.1:n.274+5839C>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The ENST00000645242.1(BLK):​n.274+5839C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0126 in 152,248 control chromosomes in the GnomAD database, including 16 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.013 (16 hom., cov: 32)
• Consequence: BLK ENST00000645242.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.50
• Publications: 1 publications found

Genes affected

BLK (HGNC:1057): (BLK proto-oncogene, Src family tyrosine kinase) This gene encodes a nonreceptor tyrosine-kinase of the src family of proto-oncogenes that are typically involved in cell proliferation and differentiation. The protein has a role in B-cell receptor signaling and B-cell development. The protein also stimulates insulin synthesis and secretion in response to glucose and enhances the expression of several pancreatic beta-cell transcription factors. [provided by RefSeq, Aug 2010]

BLK Gene-Disease associations (from GenCC):

• maturity-onset diabetes of the young

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• systemic lupus erythematosus

  Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet
• maturity-onset diabetes of the young type 11

  Inheritance: AD, Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
• monogenic diabetes

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0126 (1922/152248) while in subpopulation AFR AF = 0.0207 (861/41540). AF 95% confidence interval is 0.0196. There are 16 homozygotes in GnomAd4. There are 923 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 1922 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BLK	ENST00000645242.1	n.274+5839C>T		intron_variant	Intron 1 of 11
BLK	ENST00000696154.2	n.274+5839C>T		intron_variant	Intron 1 of 11

Frequencies

GnomAD3 genomes AF: 0.0126 AC: 1921 AN: 152130 Hom.: 16 Cov.: 32

Gnomad AFR AF: 0.0208

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0139

Gnomad ASJ AF: 0.0305

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.0108

Gnomad FIN AF: 0.00160

Gnomad MID AF: 0.0570

Gnomad NFE AF: 0.00911

Gnomad OTH AF: 0.0167

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0126 AC: 1922 AN: 152248 Hom.: 16 Cov.: 32 AF XY: 0.0124 AC XY: 923 AN XY: 74454

African (AFR) AF: 0.0207 AC: 861 AN: 41540

American (AMR) AF: 0.0139 AC: 212 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.0305 AC: 106 AN: 3470

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5186

South Asian (SAS) AF: 0.0108 AC: 52 AN: 4822

European-Finnish (FIN) AF: 0.00160 AC: 17 AN: 10608

Middle Eastern (MID) AF: 0.0612 AC: 18 AN: 294

European-Non Finnish (NFE) AF: 0.00913 AC: 621 AN: 68016

Other (OTH) AF: 0.0161 AC: 34 AN: 2112

Alfa AF: 0.0128 Hom.: 2

Bravo AF: 0.0139

Asia WGS AF: 0.00577 AC: 21 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.67
DANN	Benign	0.42
PhyloP100		-1.5

Splicing

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

Other links and lift over

dbSNP: rs76610494; hg19: chr8-11350515;