Variant rs141201072 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_021971.4(GMPPB):c.331G>A(p.Val111Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000109 in 1,461,222 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 (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

GMPPB
NM_021971.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.95

Variant links:

Genes affected

GMPPB (HGNC:22932): (GDP-mannose pyrophosphorylase B) This gene is thought to encode a GDP-mannose pyrophosphorylase. The encoded protein catalyzes the conversion of mannose-1-phosphate and GTP to GDP-mannose, a reaction involved in the production of N-linked oligosaccharides. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jan 2009]

GMPPB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.84

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GMPPB	NM_021971.4 linkuse as main transcript	c.331G>A	p.Val111Met	missense_variant	4/9	ENST00000308388.7	NP_068806.2
GMPPB	NM_013334.4 linkuse as main transcript	c.331G>A	p.Val111Met	missense_variant	4/8		NP_037466.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GMPPB	ENST00000308388.7 linkuse as main transcript	c.331G>A	p.Val111Met	missense_variant	4/9	1	NM_021971.4	ENSP00000311130	P1	Q9Y5P6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251144

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135810

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

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:

0.0000109

AC:

AN:

1461222

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

726958

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

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:

0.0000126

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A14;C3809221:Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B14;C4518000:Autosomal recessive limb-girdle muscular dystrophy type 2T

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 29, 2023

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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt GMPPB protein function. ClinVar contains an entry for this variant (Variation ID: 474015). This missense change has been observed in individual(s) with clinical features of GMPPB-related conditions (Invitae). This variant is present in population databases (rs141201072, gnomAD 0.007%). This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 111 of the GMPPB protein (p.Val111Met). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.92

BayesDel_addAF

Benign

-0.019

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.83

D;.;D

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.85

LIST_S2

Pathogenic

0.99

.;D;D

M_CAP

Pathogenic

0.39

MetaRNN

Pathogenic

0.84

D;D;D

MetaSVM

Uncertain

0.28

MutationAssessor

Pathogenic

3.1

M;M;M

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-2.6

D;D;D

REVEL

Pathogenic

0.66

Sift

Uncertain

0.0010

D;D;D

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

0.92

P;D;P

Vest4

0.70

MVP

0.87

MPC

1.4

ClinPred

0.98

GERP RS

3.8

Varity_R

0.64

gMVP

0.63

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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