chrX-48793816-G-A

Variant names:

• chrX-48793816-G-A
• NM_002049.4:c.894G>A
• GATA1 p.Arg298Arg

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4 BP7

The NM_002049.4(GATA1):​c.894G>A​(p.Arg298Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R298R) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 9.1e-7 (0 hom. 1 hem.)
  • Failed GnomAD Quality Control
• Consequence: GATA1 NM_002049.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.609
• Publications: 0 publications found

Genes affected

GATA1 (HGNC:4170): (GATA binding protein 1) This gene encodes a protein which belongs to the GATA family of transcription factors. The protein plays an important role in erythroid development by regulating the switch of fetal hemoglobin to adult hemoglobin. Mutations in this gene have been associated with X-linked dyserythropoietic anemia and thrombocytopenia. [provided by RefSeq, Jul 2008]

GATA1 Gene-Disease associations (from GenCC):

• GATA1-Related X-Linked Cytopenia

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
• thrombocytopenia, X-linked, with or without dyserythropoietic anemia

  Inheritance: XL Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• beta-thalassemia-X-linked thrombocytopenia syndrome

  Inheritance: XL Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
• Diamond-Blackfan anemia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• cutaneous porphyria

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• thrombocytopenia with congenital dyserythropoietic anemia

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
• X-linked dyserythropoetic anemia with abnormal platelets and neutropenia

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000232828 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (REVEL=0.239).
• BP7: Synonymous conserved (PhyloP=0.609 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002049.4. 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
	GATA1	NM_002049.4	MANE Select	c.894G>A	p.Arg298Arg	synonymous	Exon 6 of 6	NP_002040.1	P15976-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GATA1	ENST00000376670.9	TSL:1 MANE Select	c.894G>A	p.Arg298Arg	synonymous	Exon 6 of 6	ENSP00000365858.3	P15976-1
	GATA1	ENST00000696450.1		c.909G>A	p.Arg303Arg	synonymous	Exon 6 of 6	ENSP00000512637.1	A0A8Q3SIN3
	GATA1	ENST00000696452.1		c.684G>A	p.Arg228Arg	synonymous	Exon 5 of 5	ENSP00000512639.1	A0A8Q3SIT6

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 9.12e-7 AC: 1 AN: 1097040 Hom.: 0 Cov.: 31 AF XY: 0.00000276 AC XY: 1 AN XY: 362484

African (AFR) AF: 0.00 AC: 0 AN: 26392

American (AMR) AF: 0.00 AC: 0 AN: 35125

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19365

East Asian (EAS) AF: 0.00 AC: 0 AN: 30196

South Asian (SAS) AF: 0.00 AC: 0 AN: 53742

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40468

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4044

European-Non Finnish (NFE) AF: 0.00000119 AC: 1 AN: 841649

Other (OTH) AF: 0.00 AC: 0 AN: 46059

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	8.9
DANN	Benign	0.63
PhyloP100		0.61

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

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

Other links and lift over

hg19: chrX-48652223;