3-128481116-GA-CT

Variant names:

• chr3-128481116-GA-CT
• NM_001145661.2:c.1345_1346delTCinsAG
• GATA2 p.450

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_032638.5(GATA2):​c.1345_1346delTCinsAG​(p.450) variant causes a synonymous change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S449S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: GATA2 NM_032638.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.93
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• deafness-lymphedema-leukemia syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• GATA2 deficiency with susceptibility to MDS/AML

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• monocytopenia with susceptibility to infections

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
• acute myeloid leukemia

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• myelodysplastic syndrome

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032638.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GATA2	NM_001145661.2	MANE Plus Clinical	c.1345_1346delTCinsAG	p.450	synonymous	N/A	NP_001139133.1	P23769-1
	GATA2	NM_032638.5	MANE Select	c.1345_1346delTCinsAG	p.450	synonymous	N/A	NP_116027.2
	GATA2	NM_001145662.1		c.1303_1304delTCinsAG	p.436	synonymous	N/A	NP_001139134.1	P23769-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GATA2	ENST00000341105.7	TSL:1 MANE Select	c.1345_1346delTCinsAG	p.450	synonymous	N/A	ENSP00000345681.2	P23769-1
	GATA2	ENST00000487848.6	TSL:1 MANE Plus Clinical	c.1345_1346delTCinsAG	p.450	synonymous	N/A	ENSP00000417074.1	P23769-1
	GATA2	ENST00000430265.6	TSL:1	c.1303_1304delTCinsAG	p.436	synonymous	N/A	ENSP00000400259.2	P23769-2

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.9

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr3-128199959;