chr2-97724043-G-C

Position:

chr2-97724043-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001079.4(ZAP70):c.7G>C(p.Asp3His) variant causes a missense change. The variant allele was found at a frequency of 0.00000645 in 1,551,228 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 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000064 ( 0 hom. )

Consequence

ZAP70
NM_001079.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.27

Variant links:

Genes affected

ZAP70 (HGNC:12858): (zeta chain of T cell receptor associated protein kinase 70) This gene encodes an enzyme belonging to the protein tyrosine kinase family, and it plays a role in T-cell development and lymphocyte activation. This enzyme, which is phosphorylated on tyrosine residues upon T-cell antigen receptor (TCR) stimulation, functions in the initial step of TCR-mediated signal transduction in combination with the Src family kinases, Lck and Fyn. This enzyme is also essential for thymocyte development. Mutations in this gene cause selective T-cell defect, a severe combined immunodeficiency disease characterized by a selective absence of CD8-positive T-cells. Two transcript variants that encode different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ZAP70 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.789

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZAP70	NM_001079.4 linkuse as main transcript	c.7G>C	p.Asp3His	missense_variant	3/14	ENST00000264972.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZAP70	ENST00000264972.10 linkuse as main transcript	c.7G>C	p.Asp3His	missense_variant	3/14	1	NM_001079.4	P1	P43403-1
ZAP70	ENST00000698508.1 linkuse as main transcript	c.7G>C	p.Asp3His	missense_variant	2/13			P1	P43403-1
ZAP70	ENST00000483781.5 linkuse as main transcript	n.200G>C		non_coding_transcript_exon_variant	3/7	2
ZAP70	ENST00000698509.1 linkuse as main transcript	n.147G>C		non_coding_transcript_exon_variant	1/12

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152274

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000127

AC:

AN:

157502

Hom.:

AF XY:

0.0000116

AC XY:

AN XY:

86216

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000305

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000643

AC:

AN:

1398954

Hom.:

Cov.:

AF XY:

0.00000722

AC XY:

AN XY:

692174

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000828

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152274

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74396

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

ZAP70-Related Severe Combined Immunodeficiency

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 06, 2018

This variant has not been reported in the literature in individuals with ZAP70-related disease. While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. This sequence change replaces aspartic acid with histidine at codon 3 of the ZAP70 protein (p.Asp3His). The aspartic acid residue is moderately conserved and there is a moderate physicochemical difference between aspartic acid and histidine. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Uncertain

0.057

BayesDel_noAF

Uncertain

-0.060

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.73

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.82

M_CAP

Uncertain

0.28

MetaRNN

Pathogenic

0.79

MetaSVM

Uncertain

0.37

MutationAssessor

Uncertain

2.6

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.71

PROVEAN

Uncertain

-3.4

REVEL

Uncertain

0.50

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0030

Polyphen

0.99

Vest4

0.58

MutPred

0.33

Gain of disorder (P = 0.1566);

MVP

0.94

MPC

1.6

ClinPred

0.94

GERP RS

5.0

Varity_R

0.85

gMVP

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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