chr11-2884990-GCCGCGA-G

Position:

• chr11-2884990-GCCGCGA-G

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP3 BP6_Very_Strong BS2

The NM_001122630.2(CDKN1C):​c.461_466del​(p.Val154_Ala155del) variant causes a inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000109 in 1,104,384 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000055 (0 hom., cov: 30)
  • Exomes 𝑓: 0.00012 (0 hom.)
• Consequence: CDKN1C NM_001122630.2 inframe_deletion
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.608

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 Benign. Variant got -13 ACMG points.

• BP3: Nonframeshift variant in repetitive region in NM_001122630.2
• BP6: Variant 11-2884990-GCCGCGA-G is Benign according to our data. Variant chr11-2884990-GCCGCGA-G is described in ClinVar as [Likely_benign]. Clinvar id is 236953.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CDKN1C	NM_001122630.2	c.461_466del	p.Val154_Ala155del	inframe_deletion	2/4	ENST00000440480.8	NP_001116102.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDKN1C	ENST00000440480.8	c.461_466del	p.Val154_Ala155del	inframe_deletion	2/4	1	NM_001122630.2	ENSP00000411257	A2

Frequencies

GnomAD3 genomes AF: 0.0000549 AC: 8 AN: 145644 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00121

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000615

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000117 AC: 112 AN: 958628 Hom.: 0 AF XY: 0.000103 AC XY: 47 AN XY: 456714

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000543

Gnomad4 ASJ exome AF: 0.000807

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000213

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000109

Gnomad4 OTH exome AF: 0.000129

GnomAD4 genome AF: 0.0000549 AC: 8 AN: 145756 Hom.: 0 Cov.: 30 AF XY: 0.0000421 AC XY: 3 AN XY: 71260

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00121

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000615

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000169 Hom.: 0

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Beckwith-Wiedemann syndrome Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 27, 2024

- -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Jun 01, 2024

CDKN1C: BS1 -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs878853627; hg19: chr11-2906220;