chr11-2884890-TGGGGCC-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP3BP6_ModerateBS2

The NM_001122630.2(CDKN1C):c.561_566delGGCCCC(p.Ala188_Pro189del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000202 in 741,354 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. P187P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000093 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

CDKN1C
NM_001122630.2 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter U:1B:1

Conservation

PhyloP100: 0.259

Publications

0 publications found

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 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

CDKN1C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP3

Nonframeshift variant in repetitive region in NM_001122630.2

BP6

Variant 11-2884890-TGGGGCC-T is Benign according to our data. Variant chr11-2884890-TGGGGCC-T is described in ClinVar as Likely_benign. ClinVar VariationId is 454018.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAdExome4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDKN1C	NM_001122630.2 link	c.561_566delGGCCCC	p.Ala188_Pro189del	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.561_566delGGCCCC	p.Ala188_Pro189del	disruptive_inframe_deletion	Exon 2 of 4	1	NM_001122630.2	ENSP00000411257.2		P49918-2

Frequencies

GnomAD3 genomes

AF:

0.00000928

AC:

AN:

107750

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000204

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000221

AC:

AN:

633604

Hom.:

AF XY:

0.0000168

AC XY:

AN XY:

298166

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

11656

American (AMR)

AF:

0.00

AC:

AN:

1966

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

4932

East Asian (EAS)

AF:

0.00

AC:

AN:

4346

South Asian (SAS)

AF:

0.00

AC:

AN:

12780

European-Finnish (FIN)

AF:

0.00

AC:

AN:

4518

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1394

European-Non Finnish (NFE)

AF:

0.0000246

AC:

AN:

570030

Other (OTH)

AF:

0.00

AC:

AN:

21982

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000928

AC:

AN:

107750

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

52988

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

29676

American (AMR)

AF:

0.00

AC:

AN:

11492

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2582

East Asian (EAS)

AF:

0.00

AC:

AN:

3594

South Asian (SAS)

AF:

0.00

AC:

AN:

3248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

5928

Middle Eastern (MID)

AF:

0.00

AC:

AN:

150

European-Non Finnish (NFE)

AF:

0.0000204

AC:

AN:

49026

Other (OTH)

AF:

0.00

AC:

AN:

1466

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

CDKN1C-related disorder

Uncertain:1

Mar 11, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The CDKN1C c.594_599del6 variant is predicted to result in an in-frame deletion (p.Ala215_Pro216del). To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Beckwith-Wiedemann syndrome

Benign:1

Oct 21, 2024

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

PhyloP100

0.26

Mutation Taster

=160/40

polymorphism

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over