Genetic Variant CDKN1C:p.Ala190_Pro199del (chr11-2884860-GGGGGCCGGGGCCGGGGCCGGGGCCGGGGCT-G) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_ModerateBS1BS2

The NM_001122630.2(CDKN1C):c.567_596delAGCCCCGGCCCCGGCCCCGGCCCCGGCCCC(p.Ala190_Pro199del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000043 in 1,022,798 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. P189P) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000028 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000045 ( 0 hom. )

Consequence

CDKN1C
NM_001122630.2 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.91

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:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP6

Variant 11-2884860-GGGGGCCGGGGCCGGGGCCGGGGCCGGGGCT-G is Benign according to our data. Variant chr11-2884860-GGGGGCCGGGGCCGGGGCCGGGGCCGGGGCT-G is described in ClinVar as [Likely_benign]. Clinvar id is 412843.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.0000455 (40/879568) while in subpopulation MID AF= 0.000471 (1/2124). AF 95% confidence interval is 0.0000318. There are 0 homozygotes in gnomad4_exome. There are 21 alleles in male gnomad4_exome subpopulation. This position pass quality control queck.

BS2

High AC in GnomAdExome4 at 40 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDKN1C	NM_001122630.2 link	c.567_596delAGCCCCGGCCCCGGCCCCGGCCCCGGCCCC	p.Ala190_Pro199del	disruptive_inframe_deletion	Exon 2 of 4	ENST00000440480.8	NP_001116102.1	P49918-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDKN1C	ENST00000440480.8 link	c.567_596delAGCCCCGGCCCCGGCCCCGGCCCCGGCCCC	p.Ala190_Pro199del	disruptive_inframe_deletion	Exon 2 of 4	1	NM_001122630.2	ENSP00000411257.2		P49918-2

Frequencies

GnomAD3 genomes

AF:

0.0000279

AC:

AN:

143230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000506

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000685

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:

0.0000154

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000455

AC:

AN:

879568

Hom.:

AF XY:

0.0000505

AC XY:

AN XY:

415602

show subpopulations

Gnomad4 AFR exome

AF:

0.0000585

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000571

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000441

Gnomad4 OTH exome

AF:

0.0000937

GnomAD4 genome

AF:

0.0000279

AC:

AN:

143230

Hom.:

Cov.:

AF XY:

0.0000430

AC XY:

AN XY:

69764

show subpopulations

Gnomad4 AFR

AF:

0.0000506

Gnomad4 AMR

AF:

0.0000685

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000154

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Beckwith-Wiedemann syndrome

Benign:1

Jan 20, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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.

11-2884860-GGGGGCCGGGGCCGGGGCCGGGGCCGGGGCTGGGGCC-GGGGGCC

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