3-128485869-G-C

Position:

• chr3-128485869-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_032638.5(GATA2):​c.729C>G​(p.His243Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H243Y) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: GATA2 NM_032638.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.45

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GATA2	NM_001145661.2	c.729C>G	p.His243Gln	missense_variant	4/7	ENST00000487848.6
GATA2	NM_032638.5	c.729C>G	p.His243Gln	missense_variant	3/6	ENST00000341105.7
GATA2	NM_001145662.1	c.729C>G	p.His243Gln	missense_variant	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GATA2	ENST00000341105.7	c.729C>G	p.His243Gln	missense_variant	3/6	1	NM_032638.5	P1
GATA2	ENST00000487848.6	c.729C>G	p.His243Gln	missense_variant	4/7	1	NM_001145661.2	P1
GATA2	ENST00000430265.6	c.729C>G	p.His243Gln	missense_variant	3/6	1
GATA2	ENST00000696466.1	c.1011C>G	p.His337Gln	missense_variant	5/8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

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

Invitae

Apr 07, 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on GATA2 protein function. ClinVar contains an entry for this variant (Variation ID: 577683). 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 histidine, which is basic and polar, with glutamine, which is neutral and polar, at codon 243 of the GATA2 protein (p.His243Gln). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.80	D;.;D
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.18
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Pathogenic	0.31	D
MetaRNN	Uncertain	0.62	D;D;D
MetaSVM	Uncertain	0.43	D
MutationAssessor	Benign	1.5	L;L;L
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-3.5	D;D;D
REVEL	Uncertain	0.59
Sift	Benign	0.054	T;T;T
Sift4G	Benign	0.097	T;T;T
Polyphen		0.040	B;B;B
Vest4		0.88
MutPred		0.22		Loss of glycosylation at T238 (P = 0.036);Loss of glycosylation at T238 (P = 0.036);Loss of glycosylation at T238 (P = 0.036);
MVP		0.97
MPC		1.4
ClinPred		0.92	D
GERP RS		1.8
Varity_R		0.54
gMVP		0.65

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: rs369673069; hg19: chr3-128204712;