rs1261515352

chr11-2884906-A-Cchr11-2884906-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001122630.2(CDKN1C):c.551T>G(p.Val184Gly) 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 benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V184A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CDKN1C NM_001122630.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.89

Genes affected

CDKN1C (HGNC:1786): (cyclin dependent kinase inhibitor 1C) This gene is imprinted, with preferential expression of the maternal allele. The encoded protein is a tight-binding, strong inhibitor of several G1 cyclin/Cdk complexes and a negative regulator of cell proliferation. Mutations in this gene are implicated in sporadic cancers and Beckwith-Wiedemann syndorome, suggesting that this gene is a tumor suppressor candidate. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Oct 2010]

ACMG classification

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=0.07118219).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDKN1C	NM_001122630.2	c.551T>G	p.Val184Gly	missense_variant	2/4	ENST00000440480.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDKN1C	ENST00000440480.8	c.551T>G	p.Val184Gly	missense_variant	2/4	1	NM_001122630.2	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000122 AC: 8 AN: 655204 Hom.: 0 Cov.: 10 AF XY: 0.00000972 AC XY: 3 AN XY: 308786

Gnomad4 AFR exome AF: 0.0000816

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: 0.0000119

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 03, 2022

The c.584T>G (p.V195G) alteration is located in exon 1 (coding exon 1) of the CDKN1C gene. This alteration results from a T to G substitution at nucleotide position 584, causing the valine (V) at amino acid position 195 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.65
Cadd	Benign	2.7
Dann	Benign	0.57
DEOGEN2	Benign	0.025	T;T;.
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.0063	N
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.071	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N;N;.
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	0.91	N;N;N
REVEL	Benign	0.031
Sift	Uncertain	0.017	D;D;D
Sift4G	Benign	0.39	T;T;T
Polyphen		0.0	B;B;.
Vest4		0.085
MutPred		0.24		Gain of relative solvent accessibility (P = 0.005);Gain of relative solvent accessibility (P = 0.005);.;
MVP		0.19
MPC		1.6
ClinPred		0.061	T
GERP RS		-2.7
Varity_R		0.050
gMVP		0.10

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: chr11-2906136;