chr18-60372169-C-T

Position:

chr18-60372169-C-T

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PP3_ModeratePP5_Very_Strong

The NM_005912.3(MC4R):c.181G>A(p.Glu61Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000403 in 1,614,090 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

MC4R
NM_005912.3 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:8

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

MC4R (HGNC:6932): (melanocortin 4 receptor) The protein encoded by this gene is a membrane-bound receptor and member of the melanocortin receptor family. The encoded protein interacts with adrenocorticotropic and MSH hormones and is mediated by G proteins. This is an intronless gene. Defects in this gene are a cause of autosomal dominant obesity. [provided by RefSeq, Jan 2010]

MC4R links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.932

PP5

Variant 18-60372169-C-T is Pathogenic according to our data. Variant chr18-60372169-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 435831.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MC4R	NM_005912.3 linkuse as main transcript	c.181G>A	p.Glu61Lys	missense_variant	1/1	ENST00000299766.5	NP_005903.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	Appris
MC4R	ENST00000299766.5 linkuse as main transcript	c.181G>A	p.Glu61Lys	missense_variant	1/1	NM_005912.3	ENSP00000299766	P1
	ENST00000658928.1 linkuse as main transcript	n.156+42824C>T		intron_variant, non_coding_transcript_variant
	ENST00000650201.1 linkuse as main transcript	n.113+42824C>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152204

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251316

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135814

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000431

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.0000344

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:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000549

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74362

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000415

Hom.:

Bravo

AF:

0.0000189

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:3

Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Sep 07, 2022	Published functional studies demonstrate a damaging effect (Tan et al., 2009); This variant is associated with the following publications: (PMID: 20462274, 18801902, 20826565, 19091795, 34662886, 17357083) -
Likely pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	May 15, 2023	In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Experimental studies have shown that this missense change affects MC4R function (PMID: 17357083, 18801902). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on MC4R protein function. ClinVar contains an entry for this variant (Variation ID: 435831). This missense change has been observed in individual(s) with autosomal dominant obesity (PMID: 17357083, 18801902, 33761344). It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs370479598, gnomAD 0.004%). This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 61 of the MC4R protein (p.Glu61Lys). -
Pathogenic, criteria provided, single submitter	clinical testing	Athena Diagnostics	Aug 30, 2016	- -

Obesity due to melanocortin 4 receptor deficiency

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Sep 28, 2018

The p.Glu61Lys variant in MC4R has been reported in at least 10 individuals with early-onset obesity and segregated with disease in 2 relatives (Ahituv 2007, Calton 2009, Tan 2009, Alsters 2016). This variant has been identified in 5/111538 European chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org/; dbSNP ID rs370479598). In vitro functional studies provide some evidence that the p.Glu61Lys variant may impact protein function (Ahituv 2007, Calton 2009, Tan 2009); however, these types of assays may not accurately represent biological function. Computational prediction tools and conservation analysis suggest that the p.Glu61Lys variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, although additional studies are required to fully establish its clinical significance, the p.Glu61Lys variant is likely pathogenic. ACMG/AMP criteria applied: PM2, PS4_Moderate, PP3, PS3_Supporting. -

BODY MASS INDEX QUANTITATIVE TRAIT LOCUS 20

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

Nov 30, 2023

- -

Obesity, autosomal dominant

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Oct 26, 2015

- -

Obesity

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

Clinical Molecular Genetics Laboratory, Johns Hopkins All Children's Hospital

Dec 19, 2013

- -

MC4R-related disorder

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jun 14, 2024

The MC4R c.181G>A variant is predicted to result in the amino acid substitution p.Glu61Lys. This variant has been reported in the heterozygous state in at least two individuals with severe early-onset obesity (Ahituv et al. 2007. PubMed ID: 17357083; Calton et al. 2009. PubMed ID: 19091795). In vitro studies indicate that this variant causes intracellular retention, decreased ligand binding, and reduced downstream cellular signaling (René et al. 2010. PubMed ID: 20826565; Tan et al. 2009. PubMed ID: 18801902; Xiang et al. 2010. PubMed ID: 20462274). This variant is reported in 0.0044% of alleles in individuals of European (Non-Finnish) descent in gnomAD. We interpret this variant as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Pathogenic

0.19

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.76

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.96

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.93

MetaSVM

Uncertain

-0.091

MutationAssessor

Pathogenic

3.8

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-3.7

REVEL

Pathogenic

0.75

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0090

Polyphen

1.0

Vest4

0.94

MVP

0.86

MPC

0.10

ClinPred

1.0

GERP RS

5.6

Varity_R

0.97

gMVP

0.92

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