rs387906820

Variant names:

• chr18-22181549-G-A
• rs387906820
• NM_005257.6:c.1399G>A

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1 PM2 PP3_Strong

The NM_005257.6(GATA6):​c.1399G>A​(p.Ala467Thr) variant causes a missense 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. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GATA6 NM_005257.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter P:1 U:1
• Conservation: PhyloP100: 10.0
• Publications: 6 publications found

Genes affected

GATA6 (HGNC:4174): (GATA binding protein 6) This gene is a member of a small family of zinc finger transcription factors that play an important role in the regulation of cellular differentiation and organogenesis during vertebrate development. This gene is expressed during early embryogenesis and localizes to endo- and mesodermally derived cells during later embryogenesis and thereby plays an important role in gut, lung, and heart development. Mutations in this gene are associated with several congenital defects. [provided by RefSeq, Mar 2012]

GATA6 Gene-Disease associations (from GenCC):

• atrial septal defect 9

  Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: G2P, Ambry Genetics
• atrioventricular septal defect 5

  Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• GATA6-related congenital heart disease with or without pancreatic agenesis or neonatal diabetes

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• pancreatic hypoplasia-diabetes-congenital heart disease syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• metabolic syndrome

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• neonatal diabetes mellitus

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• tetralogy of fallot

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• familial atrial fibrillation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• conotruncal heart malformations

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_005257.6
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.974

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GATA6	NM_005257.6	c.1399G>A	p.Ala467Thr	missense_variant	Exon 4 of 7	ENST00000269216.10	NP_005248.2
GATA6	XM_047437483.1	c.1399G>A	p.Ala467Thr	missense_variant	Exon 4 of 7		XP_047293439.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GATA6	ENST00000269216.10	c.1399G>A	p.Ala467Thr	missense_variant	Exon 4 of 7	1	NM_005257.6	ENSP00000269216.3
GATA6	ENST00000581694.1	c.1399G>A	p.Ala467Thr	missense_variant	Exon 3 of 6	1		ENSP00000462313.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Pancreatic hypoplasia-diabetes-congenital heart disease syndrome Pathogenic:1

Dec 11, 2011

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

not provided Uncertain:1

Apr 17, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); Reported in an individual with an atrial septal defect, pulmonary stenosis, pancreatic and pituitary agenesis, seizures, and learning disability (PMID: 22158542); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 36808723, 22158542) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.59	D
BayesDel_noAF	Pathogenic	0.61
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.99	D;D
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.1
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	.;D
M_CAP	Pathogenic	0.54	D
MetaRNN	Pathogenic	0.97	D;D
MetaSVM	Pathogenic	0.94	D
MutationAssessor	Pathogenic	4.3	H;H
PhyloP100		10
PrimateAI	Pathogenic	0.91	D
PROVEAN	Uncertain	-3.9	D;.
REVEL	Pathogenic	0.93
Sift	Pathogenic	0.0	D;.
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.96
MutPred		0.83		Gain of catalytic residue at A467 (P = 0.044);Gain of catalytic residue at A467 (P = 0.044);
MVP		0.99
ClinPred		1.0	D
GERP RS		5.9
Varity_R		0.96
gMVP		0.94
Mutation Taster		=27/73	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs387906820; hg19: chr18-19761510;