Variant 20-56249115-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_019888.3(MC3R):c.272A>G(p.Asn91Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,614,170 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000036 ( 2 hom. )

Consequence

MC3R
NM_019888.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.01

Variant links:

Genes affected

MC3R (HGNC:6931): (melanocortin 3 receptor) This gene encodes a G-protein-coupled receptor for melanocyte-stimulating hormone and adrenocorticotropic hormone that is expressed in tissues other than the adrenal cortex and melanocytes. This gene maps to the same region as the locus for benign neonatal epilepsy. Mice deficient for this gene have increased fat mass despite decreased food intake, suggesting a role for this gene product in the regulation of energy homeostasis. Mutations in this gene are associated with a susceptibility to obesity in humans. [provided by RefSeq, Jul 2008]

MC3R links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MC3R	NM_019888.3 linkuse as main transcript	c.272A>G	p.Asn91Ser	missense_variant	1/1	ENST00000243911.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MC3R	ENST00000243911.2 linkuse as main transcript	c.272A>G	p.Asn91Ser	missense_variant	1/1		NM_019888.3	P1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000717

AC:

AN:

251188

Hom.:

AF XY:

0.0000884

AC XY:

AN XY:

135756

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.000392

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000363

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.0000440

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.000185

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000207

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

MC3R-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

May 23, 2023

The MC3R c.272A>G variant is predicted to result in the amino acid substitution p.Asn91Ser. This variant has been reported in two individuals with obesity using alternate nomenclature (383A>G, N128S; Zegers et al. 2011. PubMed ID: 20539302; Zegers et al. 2013. PubMed ID: 23264184). Functional analysis of this variant has been inconclusive. It does not appear to alter plasma membrane localization (Zegers et al. 2011. PubMed ID: 20539302), and alpha-MSH-stimulated cAMP signaling is mildly reduced or unchanged (Zegers et al. 2011. PubMed ID: 20539302; Yang et al. 2015. PubMed ID: 25798062). However, alpha-MSH-stimulated pERK 1/2 signaling is significantly reduced (Yang et al. 2015. PubMed ID: 25798062). The physiological consequences of these data are unknown. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.23

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Benign

0.34

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.70

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.84

M_CAP

Benign

0.032

MetaRNN

Uncertain

0.72

MetaSVM

Uncertain

0.087

MutationAssessor

Benign

1.6

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.8

REVEL

Uncertain

0.42

Sift

Uncertain

0.014

Sift4G

Benign

0.11

Vest4

0.88

MVP

0.85

MPC

0.60

ClinPred

0.40

GERP RS

4.8

Varity_R

0.30

gMVP

0.74

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