NM_000077.5(CDKN2A):c.34T>G (p.Ser12Ala) AND Familial melanoma

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Feb 10, 2021
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:: RCV002009635.6

Allele description [Variation Report for NM_000077.5(CDKN2A):c.34T>G (p.Ser12Ala)]

NM_000077.5(CDKN2A):c.34T>G (p.Ser12Ala)

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.34T>G (p.Ser12Ala)

HGVS:

NC_000009.12:g.21974794A>C
NG_007485.1:g.24698T>G
NM_000077.5:c.34T>GMANE SELECT
NM_001195132.2:c.34T>G
NM_001363763.2:c.-3-3586T>G
NM_058195.4:c.194-3586T>G
NM_058197.5:c.34T>G
NP_000068.1:p.Ser12Ala
NP_001182061.1:p.Ser12Ala
NP_478104.2:p.Ser12Ala
LRG_11:g.24698T>G
NC_000009.11:g.21974793A>C

Protein change:

S12A

Links:

dbSNP: rs2131113779

NCBI 1000 Genomes Browser:

rs2131113779

Molecular consequence:

NM_001363763.2:c.-3-3586T>G - intron variant - [Sequence Ontology: SO:0001627]
NM_058195.4:c.194-3586T>G - intron variant - [Sequence Ontology: SO:0001627]
NM_000077.5:c.34T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001195132.2:c.34T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_058197.5:c.34T>G - 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
SCV002300333	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Feb 10, 2021)	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

SCV002300333

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Feb 10, 2021)

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, SCV002300333.3

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

Description

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: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The alanine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with CDKN2A (p16INK4a)-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces serine with alanine at codon 12 of the CDKN2A (p16INK4a) protein (p.Ser12Ala). The serine residue is weakly conserved and there is a moderate physicochemical difference between serine and alanine.

#	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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