3-128486038-G-C

Variant names:

• chr3-128486038-G-C
• rs1553770972
• NM_032638.5:c.560C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_032638.5(GATA2):​c.560C>G​(p.Thr187Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar 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: 4.69

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 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14297283).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GATA2	NM_032638.5	c.560C>G	p.Thr187Ser	missense_variant	Exon 3 of 6	ENST00000341105.7	NP_116027.2
GATA2	NM_001145661.2	c.560C>G	p.Thr187Ser	missense_variant	Exon 4 of 7		NP_001139133.1
GATA2	NM_001145662.1	c.560C>G	p.Thr187Ser	missense_variant	Exon 3 of 6		NP_001139134.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GATA2	ENST00000341105.7	c.560C>G	p.Thr187Ser	missense_variant	Exon 3 of 6	1	NM_032638.5	ENSP00000345681.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

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

Jan 31, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may alter RNA splicing, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a GATA2-related disease. This sequence change replaces threonine with serine at codon 187 of the GATA2 protein (p.Thr187Ser). The threonine residue is weakly conserved and there is a small physicochemical difference between threonine and serine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Uncertain	0.039	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	18
DANN	Benign	0.73
DEOGEN2	Benign	0.30	T;.;T
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.27
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.59	.;T;T
M_CAP	Uncertain	0.16	D
MetaRNN	Benign	0.14	T;T;T
MetaSVM	Uncertain	0.24	D
MutationAssessor	Benign	-0.20	N;N;N
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-0.35	N;N;N
REVEL	Benign	0.26
Sift	Benign	0.87	T;T;T
Sift4G	Benign	0.66	T;T;T
Polyphen		0.0010	B;B;B
Vest4		0.17
MutPred		0.23		Loss of catalytic residue at T187 (P = 0.0336);Loss of catalytic residue at T187 (P = 0.0336);Loss of catalytic residue at T187 (P = 0.0336);
MVP		0.61
MPC		0.48
ClinPred		0.11	T
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.089
gMVP		0.15

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.17		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: rs1553770972; hg19: chr3-128204881;