chr3-128481092-G-T

Position:

• chr3-128481092-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_032638.5(GATA2):​c.1370C>A​(p.Thr457Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: GATA2 NM_032638.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.93

Genes affected

GATA2 (HGNC:4171): (GATA binding protein 2) This gene encodes a member of the GATA family of zinc-finger transcription factors that are named for the consensus nucleotide sequence they bind in the promoter regions of target genes. The encoded protein plays an essential role in regulating transcription of genes involved in the development and proliferation of hematopoietic and endocrine cell lineages. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Mar 2009]

GATA2 (HGNC:):

ACMG classification

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, 0.832

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GATA2	NM_032638.5	c.1370C>A	p.Thr457Lys	missense_variant	6/6	ENST00000341105.7	NP_116027.2
GATA2	NM_001145661.2	c.1370C>A	p.Thr457Lys	missense_variant	7/7		NP_001139133.1
GATA2	NM_001145662.1	c.1328C>A	p.Thr443Lys	missense_variant	6/6		NP_001139134.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GATA2	ENST00000341105.7	c.1370C>A	p.Thr457Lys	missense_variant	6/6	1	NM_032638.5	ENSP00000345681.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Deafness-lymphedema-leukemia syndrome;C3280030:Monocytopenia with susceptibility to infections Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 18, 2023

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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt GATA2 protein function. This variant has not been reported in the literature in individuals affected with GATA2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces threonine, which is neutral and polar, with lysine, which is basic and polar, at codon 457 of the GATA2 protein (p.Thr457Lys). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.86
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.79	D;.;D
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.93	.;D;D
M_CAP	Pathogenic	0.62	D
MetaRNN	Pathogenic	0.83	D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.6	M;.;M
PrimateAI	Uncertain	0.77	T
PROVEAN	Uncertain	-2.4	N;D;N
REVEL	Pathogenic	0.65
Sift	Uncertain	0.0030	D;D;D
Sift4G	Uncertain	0.038	D;T;D
Polyphen		1.0	D;D;D
Vest4		0.71
MutPred		0.29		Gain of methylation at T457 (P = 0.0014);.;Gain of methylation at T457 (P = 0.0014);
MVP		0.87
MPC		0.69
ClinPred		0.97	D
GERP RS		4.8
Varity_R		0.45
gMVP		0.89

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

Other links and lift over

dbSNP: rs139415862; hg19: chr3-128199935; COSMIC: COSV62003841;