Genetic Variant GATA3:p.Gly248* (chr10-8058805-G-T) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1PM2

The NM_001002295.2(GATA3):c.742G>T(p.Gly248*) variant causes a stop gained change. The variant allele was found at a frequency of 0.000000687 in 1,454,840 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

GATA3
NM_001002295.2 stop_gained

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.10

Publications

1 publications found

Variant links:

Genes affected

GATA3 (HGNC:4172): (GATA binding protein 3) This gene encodes a protein which belongs to the GATA family of transcription factors. The protein contains two GATA-type zinc fingers and is an important regulator of T-cell development and plays an important role in endothelial cell biology. Defects in this gene are the cause of hypoparathyroidism with sensorineural deafness and renal dysplasia. [provided by RefSeq, Nov 2009]

GATA3 Gene-Disease associations (from GenCC):

hypoparathyroidism-deafness-renal disease syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet

GATA3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GATA3	NM_001002295.2 link	c.742G>T	p.Gly248*	stop_gained	Exon 3 of 6	ENST00000379328.9	NP_001002295.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
GATA3	ENST00000379328.9 link	c.742G>T	p.Gly248*	stop_gained	Exon 3 of 6	1	NM_001002295.2	ENSP00000368632.3
GATA3	ENST00000346208.4 link	c.742G>T	p.Gly248*	stop_gained	Exon 3 of 6	1		ENSP00000341619.3
GATA3	ENST00000461472.1 link	c.406G>T	p.Gly136*	stop_gained	Exon 1 of 3	3		ENSP00000515407.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1454840

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724058

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.0000215

AC:

AN:

46576

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111894

Other (OTH)

AF:

0.00

AC:

AN:

60338

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.60

BayesDel_noAF

Pathogenic

0.56

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0

.;.;.

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.88

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.0

.;.;.

MetaRNN

Benign

0.0

.;.;.

MutationAssessor

Benign

0.0

.;.;.

PhyloP100

4.1

PROVEAN

Benign

0.0

.;.;.

REVEL

Benign

0.0

Sift

Pathogenic

0.0

.;.;.

Sift4G

Pathogenic

0.0

.;.;.

Vest4

0.97

GERP RS

5.5

Mutation Taster

=0/200

disease causing (fs/PTC)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over