rs771731330

Positions:

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_001122630.2(CDKN1C):c.320C>T(p.Pro107Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000574 in 1,497,220 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

CDKN1C
NM_001122630.2 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.0350

Variant links:

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]

CDKN1C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.02095905).

BP6

Variant 11-2885137-G-A is Benign according to our data. Variant chr11-2885137-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 404254.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd4 at 12 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CDKN1C	NM_001122630.2 linkuse as main transcript	c.320C>T	p.Pro107Leu	missense_variant	2/4	ENST00000440480.8	NP_001116102.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDKN1C	ENST00000440480.8 linkuse as main transcript	c.320C>T	p.Pro107Leu	missense_variant	2/4	1	NM_001122630.2	ENSP00000411257	A2	P49918-2

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00231

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000132

AC:

AN:

98764

Hom.:

AF XY:

0.0000915

AC XY:

AN XY:

54672

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000527

Gnomad ASJ exome

AF:

0.00199

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000253

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000550

AC:

AN:

1345132

Hom.:

Cov.:

AF XY:

0.0000574

AC XY:

AN XY:

662092

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000334

Gnomad4 ASJ exome

AF:

0.00176

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000244

Gnomad4 OTH exome

AF:

0.000125

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152088

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74278

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00231

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000589

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000942

Hom.:

Bravo

AF:

0.0000604

ExAC

AF:

0.0000769

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Beckwith-Wiedemann syndrome

Benign:2

Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	Jun 03, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 21, 2024	- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 14, 2021

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

CDKN1C-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 22, 2024

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

IMAGe syndrome;C5680918:Beckwith-Wiedemann syndrome due to CDKN1C mutation

Benign:1

Benign, criteria provided, single submitter

research

University of Washington Department of Laboratory Medicine, University of Washington

Apr 01, 2018

The CDKN1C variant designated as NM_000076.2:c.353C>T (p.Pro118Leu) is classified as likely benign. The CDKN1C gene is a paternally imprinted gene. Maternally inherited pathogenic variants in the CDKN1C gene are associated with Beckwith-Wiedemann syndrome and IMAGE syndrome. However, missense variants associated with these syndromes are in different domains than the CDKN1C p.Pro118Leu missense variant (Arboleda et al 2012, PMID:22634751), indicating that this variant is less likely to cause disease. Additionally, the variant was maternally inherited in one observed patient who reported no clinical symptoms of Beckwith-Wiedemann syndrome or IMAGE syndrome after four decades of life. Bayesian analysis integrating this data (Tavtigian et al, 2018, PMID:29300386) gives less than 0.1% probability of pathogenicity, which is consistent with a classification of benign. This analysis was performed in conjunction with the family studies project as part of the University of Washington Find My Variant Study. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.080

T;T;.

Eigen

Benign

-0.63

Eigen_PC

Benign

-0.66

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.53

.;T;T

M_CAP

Pathogenic

0.98

MetaRNN

Benign

0.021

T;T;T

MetaSVM

Benign

-0.54

MutationAssessor

Benign

0.81

L;L;.

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Pathogenic

0.79

PROVEAN

Benign

-1.4

N;N;N

REVEL

Benign

0.11

Sift

Benign

0.21

T;T;T

Sift4G

Uncertain

0.045

D;D;T

Polyphen

0.28

B;B;.

Vest4

0.080

MVP

0.58

MPC

1.4

ClinPred

0.053

GERP RS

1.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.037

gMVP

0.26

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over