dbSNP rs886037621: BLK-AS1:n.77+5C>A (chr8-11564613-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000602626.2(BLK-AS1):n.77+5C>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000185 in 377,430 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as no classifications from unflagged records (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 36)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

BLK-AS1
ENST00000602626.2 splice_region, intron

Scores

Clinical Significance

no classifications from unflagged records no classifications from unflagged records P:1

Conservation

PhyloP100: -0.412

Publications

0 publications found

Variant links:

Genes affected

BLK-AS1 (HGNC:58190):

BLK-AS1 links:

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

BLK links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript ENST00000602626.2, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000602626.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BLK	NM_001715.3	MANE Select	c.*505G>T		downstream_gene	N/A	NP_001706.2
	BLK	NM_001330465.2		c.*505G>T		downstream_gene	N/A	NP_001317394.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
BLK-AS1	ENST00000602626.2	TSL:6	n.77+5C>A	splice_region intron	N/A
BLK	ENST00000259089.9	TSL:1 MANE Select	c.*505G>T	downstream_gene	N/A	ENSP00000259089.4	P51451
BLK	ENST00000526097.1	TSL:1	n.*14G>T	downstream_gene	N/A

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152276

Hom.:

Cov.:

show subpopulations

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000144

AC:

AN:

69400

AF XY:

0.0000278

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000391

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000222

AC:

AN:

225154

Hom.:

Cov.:

AF XY:

0.0000243

AC XY:

AN XY:

123578

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

6142

American (AMR)

AF:

0.00

AC:

AN:

18178

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

5918

East Asian (EAS)

AF:

0.00

AC:

AN:

7954

South Asian (SAS)

AF:

0.00

AC:

AN:

47390

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9540

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2390

European-Non Finnish (NFE)

AF:

0.0000428

AC:

AN:

116846

Other (OTH)

AF:

0.00

AC:

AN:

10796

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.565

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152276

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74394

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41476

American (AMR)

AF:

0.00

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68054

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

ClinVar submissions

Significance:no classifications from unflagged records

Revision:no classifications from unflagged records

View on ClinVar

Pathogenic

VUS

Benign

Condition

Maturity-onset diabetes of the young type 11 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

4.4

(source)

DANN

Benign

0.72

PhyloP100

-0.41

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over