chr16-89919362-G-A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_002386.4(MC1R):​c.104G>A​(p.Cys35Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000428 in 1,613,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C35W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

MC1R
NM_002386.4 missense

Scores

5
11
1

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 2.05

Publications

11 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]

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.936
BS2
High AC in GnomAdExome4 at 65 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.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MC1R
NM_002386.4
MANE Select
c.104G>Ap.Cys35Tyr
missense
Exon 1 of 1NP_002377.4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MC1R
ENST00000555147.2
TSL:6 MANE Select
c.104G>Ap.Cys35Tyr
missense
Exon 1 of 1ENSP00000451605.1
ENSG00000198211
ENST00000556922.1
TSL:2
c.104G>Ap.Cys35Tyr
missense
Exon 1 of 5ENSP00000451560.1
MC1R
ENST00000555427.1
TSL:5
c.104G>Ap.Cys35Tyr
missense
Exon 3 of 4ENSP00000451760.1

Frequencies

GnomAD3 genomes
AF:
0.0000263
AC:
4
AN:
152208
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000849
AC:
21
AN:
247466
AF XY:
0.000104
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.000100
Gnomad EAS exome
AF:
0.0000557
Gnomad FIN exome
AF:
0.0000465
Gnomad NFE exome
AF:
0.0000985
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000445
AC:
65
AN:
1460868
Hom.:
0
Cov.:
30
AF XY:
0.0000509
AC XY:
37
AN XY:
726694
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.000134
AC:
6
AN:
44696
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26132
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39700
South Asian (SAS)
AF:
0.0000696
AC:
6
AN:
86248
European-Finnish (FIN)
AF:
0.0000190
AC:
1
AN:
52678
Middle Eastern (MID)
AF:
0.000173
AC:
1
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000387
AC:
43
AN:
1111822
Other (OTH)
AF:
0.0000994
AC:
6
AN:
60348
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.477
Heterozygous variant carriers
0
5
10
14
19
24
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000263
AC:
4
AN:
152208
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74354
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41460
American (AMR)
AF:
0.0000654
AC:
1
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5190
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000441
AC:
3
AN:
68030
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.450
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000434
Hom.:
0
Bravo
AF:
0.0000378
ExAC
AF:
0.0000745
AC:
9
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.000164
EpiControl
AF:
0.000119

ClinVar

ClinVar submissions as Germline
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
not provided (2)
-
1
-
bilateral breast cancer (1)
-
1
-
Melanoma, cutaneous malignant, susceptibility to, 5 (1)
-
1
-
Tyrosinase-positive oculocutaneous albinism;C1849452:SKIN/HAIR/EYE PIGMENTATION, VARIATION IN, 2;C2751295:Melanoma, cutaneous malignant, susceptibility to, 5;C2751296:Increased analgesia from kappa-opioid receptor agonist, female-specific (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.35
BayesDel_addAF
Uncertain
0.15
D
BayesDel_noAF
Pathogenic
0.20
CADD
Uncertain
25
DANN
Uncertain
0.97
DEOGEN2
Uncertain
0.47
T
Eigen
Uncertain
0.54
Eigen_PC
Uncertain
0.42
FATHMM_MKL
Uncertain
0.80
D
LIST_S2
Benign
0.82
T
M_CAP
Uncertain
0.23
D
MetaRNN
Pathogenic
0.94
D
MetaSVM
Uncertain
-0.053
T
MutationAssessor
Pathogenic
3.1
M
PhyloP100
2.1
PROVEAN
Pathogenic
-5.5
D
REVEL
Uncertain
0.50
Sift
Pathogenic
0.0
D
Sift4G
Uncertain
0.0080
D
Polyphen
1.0
D
Vest4
0.28
MutPred
0.80
Loss of catalytic residue at L36 (P = 0.0076)
MVP
0.88
MPC
0.11
ClinPred
0.66
D
GERP RS
4.6
PromoterAI
-0.098
Neutral
Varity_R
0.68
gMVP
0.38
Mutation Taster
=73/27
polymorphism

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

Other links and lift over

dbSNP: rs779504604; hg19: chr16-89985770; COSMIC: COSV59627101; COSMIC: COSV59627101; API