12-12717966-C-TAA

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_004064.5(CDKN1B):​c.127delinsTAA​(p.Arg43Ter) variant causes a stop gained, frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. R43R) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 33)

Consequence

CDKN1B
NM_004064.5 stop_gained, frameshift

Scores

Not classified

Clinical Significance

Likely pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 2.59
Variant links:
Genes affected
CDKN1B (HGNC:1785): (cyclin dependent kinase inhibitor 1B) This gene encodes a cyclin-dependent kinase inhibitor, which shares a limited similarity with CDK inhibitor CDKN1A/p21. The encoded protein binds to and prevents the activation of cyclin E-CDK2 or cyclin D-CDK4 complexes, and thus controls the cell cycle progression at G1. The degradation of this protein, which is triggered by its CDK dependent phosphorylation and subsequent ubiquitination by SCF complexes, is required for the cellular transition from quiescence to the proliferative state. Mutations in this gene are associated with multiple endocrine neoplasia type IV (MEN4). [provided by RefSeq, Apr 2014]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 12-12717966-C-TAA is Pathogenic according to our data. Variant chr12-12717966-C-TAA is described in ClinVar as [Likely_pathogenic]. Clinvar id is 157518.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CDKN1BNM_004064.5 linkuse as main transcriptc.127delinsTAA p.Arg43Ter stop_gained, frameshift_variant 1/3 ENST00000228872.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CDKN1BENST00000228872.9 linkuse as main transcriptc.127delinsTAA p.Arg43Ter stop_gained, frameshift_variant 1/31 NM_004064.5 P1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
Cov.:
52
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Neuroendocrine neoplasm Pathogenic:1
Likely pathogenic, no assertion criteria providedresearchJames Howe Lab, University of Iowa Hospital and ClinicsSep 05, 2014- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs797044481; hg19: chr12-12870900; COSMIC: COSV99963965; COSMIC: COSV99963965; API