rs377216794

Variant names:

• chr11-2884046-G-A
• rs377216794
• NM_001122630.2:c.876C>T

Your query was ambiguous. Multiple possible variants found:

• chr11-2884046-G-A
• chr11-2884046-G-C
• chr11-2884046-G-T

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_001122630.2(CDKN1C):​c.876C>T​(p.Gly292Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000101 in 1,555,004 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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: 0.00010 (0 hom.)
• Consequence: CDKN1C NM_001122630.2 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.323
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Beckwith-Wiedemann syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• IMAGe syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Illumina, G2P, Ambry Genetics
• rhabdomyosarcoma

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• Beckwith-Wiedemann syndrome due to CDKN1C mutation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• intrauterine growth restriction-short stature-early adult-onset diabetes syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Silver-Russell syndrome

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -21 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.06325489).
• BP6: Variant 11-2884046-G-A is Benign according to our data. Variant chr11-2884046-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 524713.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.323 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0000789 (12/152156) while in subpopulation NFE AF = 0.000147 (10/68006). AF 95% confidence interval is 0.0000791. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High AC in GnomAd4 at 12 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001122630.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDKN1C	NM_001122630.2	MANE Select	c.876C>T	p.Gly292Gly	synonymous	Exon 3 of 4	NP_001116102.1
	CDKN1C	NM_001362475.2		c.344C>T	p.Ala115Val	missense	Exon 3 of 4	NP_001349404.1
	CDKN1C	NM_000076.2		c.909C>T	p.Gly303Gly	synonymous	Exon 2 of 3	NP_000067.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDKN1C	ENST00000440480.8	TSL:1 MANE Select	c.876C>T	p.Gly292Gly	synonymous	Exon 3 of 4	ENSP00000411257.2
	CDKN1C	ENST00000414822.8	TSL:1	c.909C>T	p.Gly303Gly	synonymous	Exon 2 of 3	ENSP00000413720.3
	CDKN1C	ENST00000430149.3	TSL:1	c.909C>T	p.Gly303Gly	synonymous	Exon 2 of 3	ENSP00000411552.2

Frequencies

GnomAD3 genomes AF: 0.0000789 AC: 12 AN: 152156 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000450 AC: 7 AN: 155580 AF XY: 0.0000474

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000116

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000103 AC: 145 AN: 1402848 Hom.: 0 Cov.: 32 AF XY: 0.0000981 AC XY: 68 AN XY: 692846

African (AFR) AF: 0.0000631 AC: 2 AN: 31690

American (AMR) AF: 0.00 AC: 0 AN: 36844

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25162

East Asian (EAS) AF: 0.00 AC: 0 AN: 36616

South Asian (SAS) AF: 0.00 AC: 0 AN: 79948

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 47082

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5358

European-Non Finnish (NFE) AF: 0.000118 AC: 128 AN: 1082070

Other (OTH) AF: 0.000258 AC: 15 AN: 58078

GnomAD4 genome AF: 0.0000789 AC: 12 AN: 152156 Hom.: 0 Cov.: 33 AF XY: 0.0000404 AC XY: 3 AN XY: 74328

African (AFR) AF: 0.0000482 AC: 2 AN: 41452

American (AMR) AF: 0.00 AC: 0 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10608

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000147 AC: 10 AN: 68006

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000901 Hom.: 0

Bravo AF: 0.0000567

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000121 AC: 1

ExAC AF: 0.0000624 AC: 7

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Beckwith-Wiedemann syndrome Benign:1

Oct 07, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CDKN1C-related disorder Benign:1

May 30, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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).

not provided Benign:1

Oct 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CDKN1C: PP2, BP4, BP7

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Uncertain	0.080	D
BayesDel_noAF	Benign	-0.12
CADD	Benign	5.4
DANN	Benign	0.91
DEOGEN2	Benign	0.0097	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.8
FATHMM_MKL	Benign	0.10	N
LIST_S2	Benign	0.39	T
M_CAP	Pathogenic	0.49	D
MetaRNN	Benign	0.063	T
MetaSVM	Benign	-0.81	T
PhyloP100		-0.32
PROVEAN	Benign	-0.37	N
REVEL	Uncertain	0.30
Sift	Benign	0.49	T
Sift4G	Benign	1.0	T
Polyphen		0.60	P
Vest4		0.13
MVP		0.61
ClinPred		0.029	T
GERP RS		-5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Mutation Taster		=99/1	polymorphism

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

Other links and lift over

dbSNP: rs377216794; hg19: chr11-2905276; COSMIC: COSV106432173;