Variant 1-231241434-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_014236.4(GNPAT):c.56G>C(p.Ser19Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,056 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S19S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

GNPAT
NM_014236.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.64

Variant links:

Genes affected

GNPAT (HGNC:4416): (glyceronephosphate O-acyltransferase) This gene encodes an enzyme located in the peroxisomal membrane which is essential to the synthesis of ether phospholipids. Mutations in this gene are associated with rhizomelic chondrodysplasia punctata. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

GNPAT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.08414632).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
GNPAT	NM_014236.4 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant	1/16	ENST00000366647.9
GNPAT	NM_001316350.2 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant	1/15
GNPAT	XM_005273313.5 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant	1/16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GNPAT	ENST00000366647.9 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant	1/16	1	NM_014236.4	P1	O15228-1
GNPAT	ENST00000416000.1 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant	1/13	5
GNPAT	ENST00000436239.5 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant	1/6	3
GNPAT	ENST00000644483.1 linkuse as main transcript	c.56G>C	p.Ser19Thr	missense_variant, NMD_transcript_variant	1/17

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000803

AC:

AN:

249010

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

134802

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461056

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726946

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 14, 2021

This sequence change replaces serine with threonine at codon 19 of the GNPAT protein (p.Ser19Thr). The serine residue is weakly conserved and there is a small physicochemical difference between serine and threonine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with GNPAT-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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

0.073

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.33

CADD

Benign

DANN

Benign

0.87

DEOGEN2

Benign

0.16

.;T;T

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.87

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.17

T;T;T

M_CAP

Benign

0.039

MetaRNN

Benign

0.084

T;T;T

MetaSVM

Benign

-0.75

MutationAssessor

Benign

1.6

.;L;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.46

N;N;N

REVEL

Benign

0.10

Sift

Benign

0.18

T;T;T

Sift4G

Benign

0.58

T;T;T

Polyphen

0.0

.;B;.

Vest4

0.10

MutPred

0.16

Loss of disorder (P = 0.049);Loss of disorder (P = 0.049);Loss of disorder (P = 0.049);

MVP

0.74

MPC

0.22

ClinPred

0.054

GERP RS

2.4

Varity_R

0.043

gMVP

0.37

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over