rs387906814

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_005257.6(GATA6):​c.592C>A​(p.Leu198Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000759 in 1,317,234 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L198V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 7.6e-7 ( 0 hom. )

Consequence

GATA6
NM_005257.6 missense

Scores

5
5
9

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.71

Publications

0 publications found
Variant links:
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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.796

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
GATA6NM_005257.6 linkc.592C>A p.Leu198Met missense_variant Exon 2 of 7 ENST00000269216.10 NP_005248.2 Q92908-1
GATA6XM_047437483.1 linkc.592C>A p.Leu198Met missense_variant Exon 2 of 7 XP_047293439.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
GATA6ENST00000269216.10 linkc.592C>A p.Leu198Met missense_variant Exon 2 of 7 1 NM_005257.6 ENSP00000269216.3 Q92908-1
GATA6ENST00000581694.1 linkc.592C>A p.Leu198Met missense_variant Exon 1 of 6 1 ENSP00000462313.1 Q92908-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
7.59e-7
AC:
1
AN:
1317234
Hom.:
0
Cov.:
30
AF XY:
0.00000154
AC XY:
1
AN XY:
650502
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:
0
AN:
25568
American (AMR)
AF:
0.00
AC:
0
AN:
23148
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
22440
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30426
South Asian (SAS)
AF:
0.00
AC:
0
AN:
71526
European-Finnish (FIN)
AF:
0.0000300
AC:
1
AN:
33342
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
3984
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1052426
Other (OTH)
AF:
0.00
AC:
0
AN:
54374
⚠️ 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: 0.275
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Atrioventricular septal defect 5 Uncertain:1
Jul 23, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 198 of the GATA6 protein (p.Leu198Met). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with GATA6-related conditions. ClinVar contains an entry for this variant (Variation ID: 1373961). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Uncertain
0.083
D
BayesDel_noAF
Benign
-0.12
CADD
Uncertain
24
DANN
Uncertain
0.99
DEOGEN2
Pathogenic
0.87
D;D
Eigen
Uncertain
0.19
Eigen_PC
Benign
0.061
FATHMM_MKL
Benign
0.67
D
LIST_S2
Benign
0.66
.;T
M_CAP
Pathogenic
0.98
D
MetaRNN
Pathogenic
0.80
D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Benign
1.7
L;L
PhyloP100
1.7
PrimateAI
Pathogenic
0.97
D
PROVEAN
Benign
-0.83
N;.
REVEL
Uncertain
0.50
Sift
Uncertain
0.0050
D;.
Sift4G
Benign
0.15
T;T
Polyphen
1.0
D;D
Vest4
0.37
MutPred
0.62
Loss of catalytic residue at L198 (P = 8e-04);Loss of catalytic residue at L198 (P = 8e-04);
MVP
0.97
ClinPred
0.81
D
GERP RS
2.7
Varity_R
0.35
gMVP
0.34
Mutation Taster
=62/38
polymorphism

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

Publications

Other links and lift over

dbSNP: rs387906814; hg19: chr18-19751697; API