chr16-89919325-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 4P and 5B. PVS1_StrongBP6BS2

The NM_002386.4(MC1R):c.67C>T(p.Gln23*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000251 in 1,612,270 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00014 ( 1 hom. )

Consequence

MC1R
NM_002386.4 stop_gained

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 0.0310

Publications

3 publications found

Variant links:

Genes affected

MC1R (HGNC:6929): (melanocortin 1 receptor) This intronless gene encodes the receptor protein for melanocyte-stimulating hormone (MSH). The encoded protein, a seven pass transmembrane G protein coupled receptor, controls melanogenesis. Two types of melanin exist: red pheomelanin and black eumelanin. Gene mutations that lead to a loss in function are associated with increased pheomelanin production, which leads to lighter skin and hair color. Eumelanin is photoprotective but pheomelanin may contribute to UV-induced skin damage by generating free radicals upon UV radiation. Binding of MSH to its receptor activates the receptor and stimulates eumelanin synthesis. This receptor is a major determining factor in sun sensitivity and is a genetic risk factor for melanoma and non-melanoma skin cancer. Over 30 variant alleles have been identified which correlate with skin and hair color, providing evidence that this gene is an important component in determining normal human pigment variation. [provided by RefSeq, Jul 2008]

MC1R links:

ENSG00000198211 (HGNC:):

ENSG00000198211 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.93 CDS is truncated, and there are 2 pathogenic variants in the truncated region.

BP6

Variant 16-89919325-C-T is Benign according to our data. Variant chr16-89919325-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 239159.

BS2

High AC in GnomAd4 at 200 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002386.4. 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
	MC1R	NM_002386.4	MANE Select	c.67C>T	p.Gln23*	stop_gained	Exon 1 of 1	NP_002377.4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MC1R	ENST00000555147.2	TSL:6 MANE Select	c.67C>T	p.Gln23*	stop_gained	Exon 1 of 1	ENSP00000451605.1	Q01726
ENSG00000198211	ENST00000556922.1	TSL:2	c.67C>T	p.Gln23*	stop_gained	Exon 1 of 5	ENSP00000451560.1	A0A0B4J269
MC1R	ENST00000555427.1	TSL:5	c.67C>T	p.Gln23*	stop_gained	Exon 3 of 4	ENSP00000451760.1	G3V4F0

Frequencies

GnomAD3 genomes

AF:

0.00132

AC:

201

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00478

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.000304

AC:

AN:

243538

AF XY:

0.000248

show subpopulations

Gnomad AFR exome

AF:

0.00459

Gnomad AMR exome

AF:

0.0000878

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000274

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000140

AC:

204

AN:

1459956

Hom.:

Cov.:

AF XY:

0.000117

AC XY:

AN XY:

726246

show subpopulations

African (AFR)

AF:

0.00523

AC:

175

AN:

33460

American (AMR)

AF:

0.000135

AC:

AN:

44534

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26106

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39660

South Asian (SAS)

AF:

0.00

AC:

AN:

86154

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52546

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000630

AC:

AN:

1111444

Other (OTH)

AF:

0.000232

AC:

AN:

60286

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.00131

AC:

200

AN:

152314

Hom.:

Cov.:

AF XY:

0.00126

AC XY:

AN XY:

74484

show subpopulations

African (AFR)

AF:

0.00474

AC:

197

AN:

41568

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.000207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000663

Hom.:

Bravo

AF:

0.00143

ESP6500AA

AF:

0.00291

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000406

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

MC1R-related disorder (1)

Melanoma, cutaneous malignant, susceptibility to, 5 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.25

BayesDel_noAF

Benign

-0.38

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.15

PhyloP100

0.031

Vest4

0.063

GERP RS

-5.6

PromoterAI

-0.029

Neutral

(source)

Mutation Taster

=64/136

disease causing (ClinVar)

(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