rs141178987

chr12-12717953-C-Achr12-12717953-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_004064.5(CDKN1B):c.114C>A(p.His38Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H38Y) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: CDKN1B NM_004064.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.871

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.844

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDKN1B	NM_004064.5	c.114C>A	p.His38Gln	missense_variant	1/3	ENST00000228872.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDKN1B	ENST00000228872.9	c.114C>A	p.His38Gln	missense_variant	1/3	1	NM_004064.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 51

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.87
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.10
Cadd	Uncertain	23
Dann	Uncertain	0.99
DEOGEN2	Uncertain	0.50	T;T;.
Eigen	Uncertain	0.32
Eigen_PC	Benign	0.21
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.84	D;D;D
MetaSVM	Uncertain	0.48	D
MutationAssessor	Pathogenic	3.0	M;.;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-6.5	D;D;D
REVEL	Pathogenic	0.75
Sift	Uncertain	0.0040	D;D;D
Sift4G	Uncertain	0.016	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.85
MutPred		0.62		Loss of catalytic residue at D37 (P = 0.2209);Loss of catalytic residue at D37 (P = 0.2209);.;
MVP		0.86
MPC		0.37
ClinPred		0.98	D
GERP RS		1.8
Varity_R		0.92
gMVP		0.56

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: chr12-12870887;