Genetic Variant MRGPRG:p.Ala141Thr (chr11-3218393-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_001164377.1(MRGPRG):c.421G>A(p.Ala141Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000533 in 1,499,586 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign 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. A141V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000052 ( 1 hom. )

Consequence

MRGPRG
NM_001164377.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0990

Variant links:

Genes affected

MRGPRG (HGNC:24829): (MAS related GPR family member G) Predicted to enable G protein-coupled receptor activity. Predicted to be involved in G protein-coupled receptor signaling pathway. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

MRGPRG links:

MRGPRG-AS1 (HGNC:26691): (MRGPRG antisense RNA 1)

MRGPRG-AS1 links:

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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=0.14807686).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MRGPRG	NM_001164377.1 link	c.421G>A	p.Ala141Thr	missense_variant	Exon 1 of 1	ENST00000332314.3	NP_001157849.1	Q86SM5
MRGPRG-AS1	NR_027138.1 link	n.62C>T		non_coding_transcript_exon_variant	Exon 1 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MRGPRG	ENST00000332314.3 link	c.421G>A	p.Ala141Thr	missense_variant	Exon 1 of 1	6	NM_001164377.1	ENSP00000330612.3	Q86SM5
MRGPRG-AS1	ENST00000420873.2 link	n.6C>T		non_coding_transcript_exon_variant	Exon 1 of 3	2
MRGPRG-AS1	ENST00000434798.1 link	n.62C>T		non_coding_transcript_exon_variant	Exon 1 of 2	2
MRGPRG-AS1	ENST00000531711.1 link	n.27C>T		non_coding_transcript_exon_variant	Exon 1 of 3	4

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151404

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000519

AC:

AN:

1348182

Hom.:

Cov.:

AF XY:

0.00000755

AC XY:

AN XY:

661854

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000681

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:

0.00000283

Gnomad4 OTH exome

AF:

0.0000357

GnomAD4 genome

AF:

0.00000660

AC:

AN:

151404

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73938

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000148

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.421G>A (p.A141T) alteration is located in exon 1 (coding exon 1) of the MRGPRG gene. This alteration results from a G to A substitution at nucleotide position 421, causing the alanine (A) at amino acid position 141 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.61

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0057

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.59

FATHMM_MKL

Benign

0.024

LIST_S2

Benign

0.58

M_CAP

Benign

0.0070

MetaRNN

Benign

0.15

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.6

REVEL

Benign

0.085

Sift

Benign

0.12

Sift4G

Benign

0.38

Vest4

0.13

MutPred

0.47

Gain of glycosylation at A141 (P = 0.0076);

MVP

0.62

ClinPred

0.32

GERP RS

1.0

Varity_R

0.040

gMVP

0.15

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