rs869320668

Positions:

• chr3-128481945-C-A
• chr3-128481945-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1_Moderate PM2 PP5_Very_Strong

The NM_032638.5(GATA2):​c.1018-1G>T variant causes a splice acceptor, intron 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. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: GATA2 NM_032638.5 splice_acceptor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 7.84

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 Pathogenic. Variant got 12 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.086625084 fraction of the gene. Cryptic splice site detected, with MaxEntScore 5.6, offset of 11, new splice context is: ccctcccattcggccgccAGaag. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 3-128481945-C-A is Pathogenic according to our data. Variant chr3-128481945-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 29716.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GATA2	NM_032638.5	c.1018-1G>T		splice_acceptor_variant, intron_variant		ENST00000341105.7	NP_116027.2
GATA2	NM_001145661.2	c.1018-1G>T		splice_acceptor_variant, intron_variant			NP_001139133.1
GATA2	NM_001145662.1	c.1018-43G>T		intron_variant			NP_001139134.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GATA2	ENST00000341105.7	c.1018-1G>T		splice_acceptor_variant, intron_variant		1	NM_032638.5	ENSP00000345681.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Monocytopenia with susceptibility to infections Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 08, 2011

- -

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

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 19, 2023

This sequence change affects an acceptor splice site in intron 4 of the GATA2 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in GATA2 are known to be pathogenic (PMID: 21670465, 23223431). This variant is not present in population databases (gnomAD no frequency). Disruption of this splice site has been observed in individuals with GATA2-related conditions (PMID: 21670465, 21765025, 26022708). ClinVar contains an entry for this variant (Variation ID: 29716). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -

Deafness-lymphedema-leukemia syndrome;CN300066:GATA2 deficiency with susceptibility to MDS/AML Pathogenic:1

Likely pathogenic, criteria provided, single submitter

curation

Molecular Pathology Research Laboratory, SA Pathology

Jul 06, 2021

PVS1_Strong, PS4_Supporting, PM2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.60	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	35
DANN	Uncertain	0.99
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.97
FATHMM_MKL	Pathogenic	0.97	D
GERP RS		5.0
RBP_binding_hub_radar		1.1
RBP_regulation_power_radar		2.8

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.96
SpliceAI score (max)		1.0		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.91		Position offset: -12
DS_AL_spliceai		1.0		Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs869320668; hg19: chr3-128200788; COSMIC: COSV62007543; COSMIC: COSV62007543;