18-13884758-T-C

Position:

• chr18-13884758-T-C

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_000529.2(MC2R):​c.761A>G​(p.Tyr254Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MC2R NM_000529.2 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 3.56

Genes affected

MC2R (HGNC:6930): (melanocortin 2 receptor) MC2R encodes one member of the five-member G-protein associated melanocortin receptor family. Melanocortins (melanocyte-stimulating hormones and adrenocorticotropic hormone) are peptides derived from pro-opiomelanocortin (POMC). MC2R is selectively activated by adrenocorticotropic hormone, whereas the other four melanocortin receptors recognize a variety of melanocortin ligands. Mutations in MC2R can result in familial glucocorticoid deficiency. Alternate transcript variants have been found for this gene. [provided by RefSeq, May 2014]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.974
• PP5: Variant 18-13884758-T-C is Pathogenic according to our data. Variant chr18-13884758-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 3266.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MC2R	NM_000529.2	c.761A>G	p.Tyr254Cys	missense_variant	2/2	ENST00000327606.4	NP_000520.1
MC2R	NM_001291911.1	c.761A>G	p.Tyr254Cys	missense_variant	2/2		NP_001278840.1
MC2R	XM_017025781.2	c.761A>G	p.Tyr254Cys	missense_variant	3/3		XP_016881270.1
MC2R	XM_047437537.1	c.761A>G	p.Tyr254Cys	missense_variant	4/4		XP_047293493.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MC2R	ENST00000327606.4	c.761A>G	p.Tyr254Cys	missense_variant	2/2	1	NM_000529.2	ENSP00000333821.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000307 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Glucocorticoid deficiency 1 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 01, 2002

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.77
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.13
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.75	D
Eigen	Uncertain	0.68
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Benign	0.012	T
MetaRNN	Pathogenic	0.97	D
MetaSVM	Benign	-0.39	T
MutationAssessor	Uncertain	2.9	M
PrimateAI	Uncertain	0.73	T
PROVEAN	Pathogenic	-7.6	D
REVEL	Pathogenic	0.72
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.84
MutPred		0.86		Gain of helix (P = 0.132);
MVP		0.83
MPC		0.85
ClinPred		1.0	D
GERP RS		5.1
Varity_R		0.92
gMVP		0.90

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

Other links and lift over

dbSNP: rs28940892; hg19: chr18-13884757; COSMIC: COSV59620118; COSMIC: COSV59620118;