NM_000077.5(CDKN2A):c.65G>T (p.Arg22Leu) AND Familial melanoma

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Sep 17, 2023
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000534168.7

Allele description [Variation Report for NM_000077.5(CDKN2A):c.65G>T (p.Arg22Leu)]

NM_000077.5(CDKN2A):c.65G>T (p.Arg22Leu)

Gene:

CDKN2A:cyclin dependent kinase inhibitor 2A [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

9p21.3

Genomic location:

Preferred name:

NM_000077.5(CDKN2A):c.65G>T (p.Arg22Leu)

HGVS:

NC_000009.12:g.21974763C>A
NG_007485.1:g.24729G>T
NM_000077.5:c.65G>TMANE SELECT
NM_001195132.2:c.65G>T
NM_001363763.2:c.-3-3555G>T
NM_058195.4:c.194-3555G>T
NM_058197.5:c.65G>T
NP_000068.1:p.Arg22Leu
NP_000068.1:p.Arg22Leu
NP_001182061.1:p.Arg22Leu
NP_478104.2:p.Arg22Leu
LRG_11t1:c.65G>T
LRG_11:g.24729G>T
LRG_11p1:p.Arg22Leu
NC_000009.11:g.21974762C>A
NM_000077.4:c.65G>T

Protein change:

R22L

Links:

dbSNP: rs1554656491

NCBI 1000 Genomes Browser:

rs1554656491

Molecular consequence:

NM_001363763.2:c.-3-3555G>T - intron variant - [Sequence Ontology: SO:0001627]
NM_058195.4:c.194-3555G>T - intron variant - [Sequence Ontology: SO:0001627]
NM_000077.5:c.65G>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001195132.2:c.65G>T - missense variant - [Sequence Ontology: SO:0001583]
NM_058197.5:c.65G>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Familial melanoma
Synonyms:: Hereditary melanoma; Hereditary cutaneous melanoma
Identifiers:: MONDO: MONDO:0018961; MedGen: C1512419

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000637427	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Sep 17, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000637427

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Sep 17, 2023)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000637427.4

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 22 of the CDKN2A (p16INK4a) protein (p.Arg22Leu). This variant has not been reported in the literature in individuals affected with CDKN2A (p16INK4a)-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The leucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. ClinVar contains an entry for this variant (Variation ID: 463510).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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