9-22006037-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004936.4(CDKN2B):ā€‹c.367C>Gā€‹(p.Arg123Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000689 in 1,451,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)
Exomes š‘“: 6.9e-7 ( 0 hom. )

Consequence

CDKN2B
NM_004936.4 missense

Scores

2
17

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.703
Variant links:
Genes affected
CDKN2B (HGNC:1788): (cyclin dependent kinase inhibitor 2B) This gene lies adjacent to the tumor suppressor gene CDKN2A in a region that is frequently mutated and deleted in a wide variety of tumors. This gene encodes a cyclin-dependent kinase inhibitor, which forms a complex with CDK4 or CDK6, and prevents the activation of the CDK kinases, thus the encoded protein functions as a cell growth regulator that controls cell cycle G1 progression. The expression of this gene was found to be dramatically induced by TGF beta, which suggested its role in the TGF beta induced growth inhibition. Two alternatively spliced transcript variants of this gene, which encode distinct proteins, have been reported. [provided by RefSeq, Jul 2008]
CDKN2B-AS1 (HGNC:34341): (CDKN2B antisense RNA 1) This gene is located within the CDKN2B-CDKN2A gene cluster at chromosome 9p21. The gene product is a functional RNA molecule that interacts with polycomb repressive complex-1 (PRC1) and -2 (PRC2), leading to epigenetic silencing of other genes in this cluster. This region is a significant genetic susceptibility locus for cardiovascular disease, and has also been linked to a number of other pathologies, including several cancers, intracranial aneurysm, type-2 diabetes, periodontitis, Alzheimer's disease, endometriosis, frailty in the elderly, and glaucoma. Multiple alternatively processed transcript variants have been detected, some of which may take the form of circular RNA molecules (PMID:21151960). [provided by RefSeq, May 2014]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.19197974).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CDKN2BNM_004936.4 linkc.367C>G p.Arg123Gly missense_variant Exon 2 of 2 ENST00000276925.7 NP_004927.2 P42772-1K7PPU3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CDKN2BENST00000276925.7 linkc.367C>G p.Arg123Gly missense_variant Exon 2 of 2 1 NM_004936.4 ENSP00000276925.6 P42772-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
6.89e-7
AC:
1
AN:
1451868
Hom.:
0
Cov.:
31
AF XY:
0.00000138
AC XY:
1
AN XY:
722562
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
9.00e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.15
BayesDel_addAF
Uncertain
0.027
T
BayesDel_noAF
Benign
-0.20
CADD
Benign
8.8
DANN
Benign
0.97
DEOGEN2
Benign
0.32
T
Eigen
Benign
-0.85
Eigen_PC
Benign
-0.77
FATHMM_MKL
Benign
0.27
N
LIST_S2
Benign
0.52
T
M_CAP
Uncertain
0.20
D
MetaRNN
Benign
0.19
T
MetaSVM
Benign
-0.33
T
MutationAssessor
Benign
0.94
L
PrimateAI
Benign
0.30
T
PROVEAN
Benign
-2.1
N
REVEL
Benign
0.25
Sift
Benign
0.18
T
Sift4G
Benign
0.21
T
Polyphen
0.18
B
Vest4
0.10
MutPred
0.47
Loss of catalytic residue at R123 (P = 0.1019);
MVP
0.89
MPC
0.52
ClinPred
0.16
T
GERP RS
1.9
Varity_R
0.078
gMVP
0.73

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-22006036; API