chr14-24632022-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_004131.6(GZMB):​c.436G>A​(p.Gly146Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000235 in 1,614,192 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

GZMB
NM_004131.6 missense

Scores

13
4
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.36
Variant links:
Genes affected
GZMB (HGNC:4709): (granzyme B) This gene encodes a member of the granzyme subfamily of proteins, part of the peptidase S1 family of serine proteases. The encoded preproprotein is secreted by natural killer (NK) cells and cytotoxic T lymphocytes (CTLs) and proteolytically processed to generate the active protease, which induces target cell apoptosis. This protein also processes cytokines and degrades extracellular matrix proteins, and these roles are implicated in chronic inflammation and wound healing. Expression of this gene may be elevated in human patients with cardiac fibrosis. [provided by RefSeq, Sep 2016]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.994

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
GZMBNM_004131.6 linkuse as main transcriptc.436G>A p.Gly146Ser missense_variant 4/5 ENST00000216341.9 NP_004122.2
GZMBNM_001346011.2 linkuse as main transcriptc.400G>A p.Gly134Ser missense_variant 4/5 NP_001332940.1
GZMBNR_144343.2 linkuse as main transcriptn.330G>A non_coding_transcript_exon_variant 3/4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
GZMBENST00000216341.9 linkuse as main transcriptc.436G>A p.Gly146Ser missense_variant 4/51 NM_004131.6 ENSP00000216341 P2
ENST00000555300.1 linkuse as main transcriptn.177+8896C>T intron_variant, non_coding_transcript_variant 5

Frequencies

GnomAD3 genomes
AF:
0.0000394
AC:
6
AN:
152222
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000199
AC:
5
AN:
251446
Hom.:
0
AF XY:
0.0000221
AC XY:
3
AN XY:
135894
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.0000578
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000219
AC:
32
AN:
1461852
Hom.:
0
Cov.:
32
AF XY:
0.0000220
AC XY:
16
AN XY:
727234
show subpopulations
Gnomad4 AFR exome
AF:
0.0000597
Gnomad4 AMR exome
AF:
0.0000894
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.0000696
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000153
Gnomad4 OTH exome
AF:
0.0000331
GnomAD4 genome
AF:
0.0000394
AC:
6
AN:
152340
Hom.:
0
Cov.:
32
AF XY:
0.0000537
AC XY:
4
AN XY:
74492
show subpopulations
Gnomad4 AFR
AF:
0.0000240
Gnomad4 AMR
AF:
0.0000653
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000193
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000491
ExAC
AF:
0.0000247
AC:
3
Asia WGS
AF:
0.000577
AC:
2
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsMar 31, 2023The c.436G>A (p.G146S) alteration is located in exon 4 (coding exon 4) of the GZMB gene. This alteration results from a G to A substitution at nucleotide position 436, causing the glycine (G) at amino acid position 146 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.62
BayesDel_addAF
Pathogenic
0.39
D
BayesDel_noAF
Pathogenic
0.51
CADD
Pathogenic
30
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.88
.;D;D;D;D
Eigen
Pathogenic
0.88
Eigen_PC
Pathogenic
0.73
FATHMM_MKL
Pathogenic
0.97
D
LIST_S2
Uncertain
0.90
D;D;D;.;D
M_CAP
Pathogenic
0.94
D
MetaRNN
Pathogenic
0.99
D;D;D;D;D
MetaSVM
Pathogenic
0.97
D
MutationAssessor
Pathogenic
4.4
.;H;.;.;.
MutationTaster
Benign
0.97
D;D;D;D;D
PrimateAI
Benign
0.44
T
PROVEAN
Pathogenic
-6.0
D;D;.;D;D
REVEL
Pathogenic
0.89
Sift
Uncertain
0.015
D;D;.;D;D
Sift4G
Uncertain
0.018
D;D;D;D;D
Polyphen
1.0
.;D;.;.;.
Vest4
0.77
MutPred
0.97
.;Gain of catalytic residue at G146 (P = 0.0984);.;.;.;
MVP
0.96
MPC
0.73
ClinPred
0.96
D
GERP RS
5.3
Varity_R
0.87
gMVP
0.92

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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: rs757031846; hg19: chr14-25101228; COSMIC: COSV53540212; API