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rs144266674

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_013314.4(BLNK):c.923T>C(p.Ile308Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000946 in 1,613,642 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00085 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00096 ( 5 hom. )

Consequence

BLNK
NM_013314.4 missense

Scores

3
16

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 2.96
Variant links:
Genes affected
BLNK (HGNC:14211): (B cell linker) This gene encodes a cytoplasmic linker or adaptor protein that plays a critical role in B cell development. This protein bridges B cell receptor-associated kinase activation with downstream signaling pathways, thereby affecting various biological functions. The phosphorylation of five tyrosine residues is necessary for this protein to nucleate distinct signaling effectors following B cell receptor activation. Mutations in this gene cause hypoglobulinemia and absent B cells, a disease in which the pro- to pre-B-cell transition is developmentally blocked. Deficiency in this protein has also been shown in some cases of pre-B acute lymphoblastic leukemia. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, May 2012]
ZNF518A (HGNC:29009): (zinc finger protein 518A) The protein encoded by this gene is a member of the krueppel C2H2-type zinc finger protein family. The encoded protein contains five zinc fingers and is likely a nuclear transcriptional regulator. Numerous transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Aug 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.00520882).
BP6
Variant 10-96204068-A-G is Benign according to our data. Variant chr10-96204068-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 444234.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr10-96204068-A-G is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000854 (130/152308) while in subpopulation SAS AF= 0.00124 (6/4822). AF 95% confidence interval is 0.000599. There are 0 homozygotes in gnomad4. There are 69 alleles in male gnomad4 subpopulation. This position pass quality control queck.
BS2
High Homozygotes in GnomAdExome at 3 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BLNKNM_013314.4 linkuse as main transcriptc.923T>C p.Ile308Thr missense_variant 13/17 ENST00000224337.10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BLNKENST00000224337.10 linkuse as main transcriptc.923T>C p.Ile308Thr missense_variant 13/171 NM_013314.4 P2Q8WV28-1

Frequencies

GnomAD3 genomes
AF:
0.000854
AC:
130
AN:
152190
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000169
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000131
Gnomad ASJ
AF:
0.00375
Gnomad EAS
AF:
0.000192
Gnomad SAS
AF:
0.00124
Gnomad FIN
AF:
0.00462
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000764
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00153
AC:
385
AN:
251454
Hom.:
3
AF XY:
0.00155
AC XY:
210
AN XY:
135902
show subpopulations
Gnomad AFR exome
AF:
0.000246
Gnomad AMR exome
AF:
0.000491
Gnomad ASJ exome
AF:
0.00397
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00219
Gnomad FIN exome
AF:
0.00540
Gnomad NFE exome
AF:
0.00108
Gnomad OTH exome
AF:
0.00277
GnomAD4 exome
AF:
0.000956
AC:
1397
AN:
1461334
Hom.:
5
Cov.:
30
AF XY:
0.00102
AC XY:
744
AN XY:
727022
show subpopulations
Gnomad4 AFR exome
AF:
0.000120
Gnomad4 AMR exome
AF:
0.000514
Gnomad4 ASJ exome
AF:
0.00452
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00208
Gnomad4 FIN exome
AF:
0.00468
Gnomad4 NFE exome
AF:
0.000647
Gnomad4 OTH exome
AF:
0.00151
GnomAD4 genome
AF:
0.000854
AC:
130
AN:
152308
Hom.:
0
Cov.:
33
AF XY:
0.000926
AC XY:
69
AN XY:
74486
show subpopulations
Gnomad4 AFR
AF:
0.000168
Gnomad4 AMR
AF:
0.000131
Gnomad4 ASJ
AF:
0.00375
Gnomad4 EAS
AF:
0.000193
Gnomad4 SAS
AF:
0.00124
Gnomad4 FIN
AF:
0.00462
Gnomad4 NFE
AF:
0.000764
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000860
Hom.:
0
Bravo
AF:
0.000536
TwinsUK
AF:
0.000809
AC:
3
ALSPAC
AF:
0.000519
AC:
2
ESP6500AA
AF:
0.000454
AC:
2
ESP6500EA
AF:
0.000814
AC:
7
ExAC
AF:
0.00170
AC:
207
EpiCase
AF:
0.000600
EpiControl
AF:
0.00113

ClinVar

Significance: Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Agammaglobulinemia 4, autosomal recessive Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeJan 31, 2024- -
not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenJan 01, 2024BLNK: BP4, BS2 -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.22
BayesDel_addAF
Benign
-0.30
T
BayesDel_noAF
Benign
-0.21
Cadd
Benign
21
Dann
Uncertain
0.99
DEOGEN2
Uncertain
0.56
D;.;T;.
Eigen
Benign
-0.075
Eigen_PC
Benign
-0.014
FATHMM_MKL
Benign
0.13
N
LIST_S2
Benign
0.85
T;T;D;D
M_CAP
Benign
0.0078
T
MetaRNN
Benign
0.0052
T;T;T;T
MetaSVM
Benign
-0.95
T
MutationAssessor
Uncertain
2.3
M;.;.;M
MutationTaster
Benign
1.0
N;N;N;N
PrimateAI
Benign
0.36
T
PROVEAN
Benign
-1.0
N;N;.;N
REVEL
Benign
0.15
Sift
Benign
0.038
D;D;.;D
Sift4G
Benign
0.70
T;T;T;T
Polyphen
0.015
B;P;D;.
Vest4
0.20
MVP
0.49
MPC
0.75
ClinPred
0.022
T
GERP RS
5.5
Varity_R
0.075
gMVP
0.18

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.060
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.

Other links and lift over

dbSNP: rs144266674; hg19: chr10-97963824; API