NM_001715.3:c.102C>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001715.3(BLK):c.102C>T(p.Asp34Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00139 in 1,610,934 control chromosomes in the GnomAD database, including 29 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0070 ( 10 hom., cov: 32)

Exomes 𝑓: 0.00080 ( 19 hom. )

Consequence

BLK
NM_001715.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -6.96

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.91).

BP6

Variant 8-11543326-C-T is Benign according to our data. Variant chr8-11543326-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 128525.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-6.96 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00696 (1059/152262) while in subpopulation AFR AF= 0.0243 (1011/41534). AF 95% confidence interval is 0.0231. There are 10 homozygotes in gnomad4. There are 475 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 1059 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BLK	NM_001715.3 link	c.102C>T	p.Asp34Asp	synonymous_variant	Exon 2 of 13	ENST00000259089.9	NP_001706.2	P51451Q05D26

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
BLK	ENST00000259089.9 link	c.102C>T	p.Asp34Asp	synonymous_variant	Exon 2 of 13	1	NM_001715.3	ENSP00000259089.4	P51451
BLK	ENST00000645242.1 link	n.275-2726C>T		intron_variant	Intron 1 of 11
BLK	ENST00000696154.2 link	n.275-2726C>T		intron_variant	Intron 1 of 11				A0A8Q3SIE3

Frequencies

GnomAD3 genomes

AF:

0.00688

AC:

1047

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00164

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00335

GnomAD3 exomes

AF:

0.00188

AC:

460

AN:

244462

Hom.:

AF XY:

0.00136

AC XY:

181

AN XY:

132850

show subpopulations

Gnomad AFR exome

AF:

0.0254

Gnomad AMR exome

AF:

0.00116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000550

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.0000520

Gnomad NFE exome

AF:

0.000127

Gnomad OTH exome

AF:

0.000833

GnomAD4 exome

AF:

0.000804

AC:

1173

AN:

1458672

Hom.:

Cov.:

AF XY:

0.000706

AC XY:

512

AN XY:

725678

show subpopulations

Gnomad4 AFR exome

AF:

0.0274

Gnomad4 AMR exome

AF:

0.00125

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000151

Gnomad4 FIN exome

AF:

0.0000193

Gnomad4 NFE exome

AF:

0.0000540

Gnomad4 OTH exome

AF:

0.00199

GnomAD4 genome

AF:

0.00696

AC:

1059

AN:

152262

Hom.:

Cov.:

AF XY:

0.00638

AC XY:

475

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.0243

Gnomad4 AMR

AF:

0.00163

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000623

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00331

Alfa

AF:

0.000732

Hom.:

Bravo

AF:

0.00744

Asia WGS

AF:

0.00289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Feb 27, 2020

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Jan 21, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:2

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 29, 2017

Genetic Services Laboratory, University of Chicago

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Maturity-onset diabetes of the young type 11

Benign:2

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Jul 19, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Systemic lupus erythematosus

Benign:1

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: research

BLK gene is associated with Systemic lupus erythematosus, sjogren's syndrome and other systemic inflammatory conditions. However no sufficient evidence is found to ascertain the role of this particular variant rs75383960, yet. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.91

CADD

Benign

0.10

DANN

Benign

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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