NM_005912.3:c.751A>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_005912.3(MC4R):c.751A>C(p.Ile251Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0107 in 1,614,030 control chromosomes in the GnomAD database, including 123 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I251T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0074 ( 6 hom., cov: 32)

Exomes 𝑓: 0.011 ( 117 hom. )

Consequence

MC4R
NM_005912.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1B:13

Conservation

PhyloP100: 6.70

Publications

101 publications found

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 Gene-Disease associations (from GenCC):

inherited obesity
Inheritance: AD Classification: STRONG Submitted by: Laboratory for Molecular Medicine
obesity due to melanocortin 4 receptor deficiency
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MC4R links:

ENSG00000285681 (HGNC:):

ENSG00000285681 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 29 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Gene score misZ: -1.0099 (below the threshold of 3.09). Trascript score misZ: 0.30396 (below the threshold of 3.09). GenCC associations: The gene is linked to inherited obesity, obesity due to melanocortin 4 receptor deficiency.

BP4

Computational evidence support a benign effect (MetaRNN=0.01031518).

BP6

Variant 18-60371599-T-G is Benign according to our data. Variant chr18-60371599-T-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 218329.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0074 (1126/152238) while in subpopulation NFE AF = 0.0114 (773/68004). AF 95% confidence interval is 0.0107. There are 6 homozygotes in GnomAd4. There are 536 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 1126 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005912.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MC4R	NM_005912.3	MANE Select	c.751A>C	p.Ile251Leu	missense	Exon 1 of 1	NP_005903.2	P32245

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MC4R	ENST00000299766.5	TSL:6 MANE Select	c.751A>C	p.Ile251Leu	missense	Exon 1 of 1	ENSP00000299766.3	P32245
ENSG00000285681	ENST00000650201.1		n.113+42254T>G		intron	N/A
ENSG00000285681	ENST00000658928.1		n.156+42254T>G		intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.00740

AC:

1126

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00244

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00726

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.0113

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0114

Gnomad OTH

AF:

0.00621

GnomAD2 exomes

AF:

0.00692

AC:

1740

AN:

251350

AF XY:

0.00704

show subpopulations

Gnomad AFR exome

AF:

0.00191

Gnomad AMR exome

AF:

0.00402

Gnomad ASJ exome

AF:

0.00119

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.0101

Gnomad NFE exome

AF:

0.0110

Gnomad OTH exome

AF:

0.00554

GnomAD4 exome

AF:

0.0111

AC:

16168

AN:

1461792

Hom.:

117

Cov.:

AF XY:

0.0107

AC XY:

7775

AN XY:

727212

show subpopulations

African (AFR)

AF:

0.00149

AC:

AN:

33480

American (AMR)

AF:

0.00398

AC:

178

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00115

AC:

AN:

26102

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39700

South Asian (SAS)

AF:

0.00203

AC:

175

AN:

86258

European-Finnish (FIN)

AF:

0.0105

AC:

560

AN:

53420

Middle Eastern (MID)

AF:

0.00191

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0131

AC:

14571

AN:

1111948

Other (OTH)

AF:

0.00979

AC:

591

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

1013

2026

3039

4052

5065

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

558

1116

1674

2232

2790

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00740

AC:

1126

AN:

152238

Hom.:

Cov.:

AF XY:

0.00720

AC XY:

536

AN XY:

74422

show subpopulations

African (AFR)

AF:

0.00243

AC:

101

AN:

41548

American (AMR)

AF:

0.00725

AC:

111

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00115

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.000830

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.0113

AC:

120

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0114

AC:

773

AN:

68004

Other (OTH)

AF:

0.00615

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

110

164

219

274

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00982

Hom.:

Bravo

AF:

0.00628

TwinsUK

AF:

0.0148

AC:

ALSPAC

AF:

0.0109

AC:

ESP6500AA

AF:

0.00340

AC:

ESP6500EA

AF:

0.0116

AC:

100

ExAC

AF:

0.00684

AC:

830

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.0106

EpiControl

AF:

0.0106

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (5)

not specified (3)

Obesity (3)

BODY MASS INDEX QUANTITATIVE TRAIT LOCUS 20 (1)

MC4R-related disorder (1)

Monogenic diabetes (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.053

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.48

CADD

Benign

(source)

DANN

Benign

0.76

DEOGEN2

Benign

0.17

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.14

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.88

MetaRNN

Benign

0.010

MetaSVM

Benign

-0.90

MutationAssessor

Benign

-2.0

PhyloP100

6.7

PrimateAI

Uncertain

0.74

PROVEAN

Benign

1.8

REVEL

Benign

0.14

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.0010

Vest4

0.23

MVP

0.53

MPC

0.014

ClinPred

0.016

GERP RS

5.8

Varity_R

0.14

gMVP

0.90

Mutation Taster

=91/9

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over