Genetic Variant NM_001122630.2:c.573_596dupGGCCCCGGCCCCGGCCCCGGCCCC (chr11-2884860-G-GGGGGCCGGGGCCGGGGCCGGGGCC) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP6BS1BS2

The NM_001122630.2(CDKN1C):c.573_596dupGGCCCCGGCCCCGGCCCCGGCCCC(p.Pro199_Ala200insAlaProAlaProAlaProAlaPro) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000628 in 143,230 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000063 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CDKN1C
NM_001122630.2 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 1.73

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 -9 ACMG points.

BP6

Variant 11-2884860-G-GGGGGCCGGGGCCGGGGCCGGGGCC is Benign according to our data. Variant chr11-2884860-G-GGGGGCCGGGGCCGGGGCCGGGGCC is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 524744.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000628 (9/143230) while in subpopulation EAS AF= 0.000205 (1/4876). AF 95% confidence interval is 0.0000493. There are 0 homozygotes in gnomad4. There are 3 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDKN1C	NM_001122630.2 link	c.573_596dupGGCCCCGGCCCCGGCCCCGGCCCC	p.Pro199_Ala200insAlaProAlaProAlaProAlaPro	disruptive_inframe_insertion	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.573_596dupGGCCCCGGCCCCGGCCCCGGCCCC	p.Pro199_Ala200insAlaProAlaProAlaProAlaPro	disruptive_inframe_insertion	Exon 2 of 4	1	NM_001122630.2	ENSP00000411257.2		P49918-2

Frequencies

GnomAD3 genomes

AF:

0.0000628

AC:

AN:

143230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000127

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000685

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000205

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000154

Gnomad OTH

AF:

0.000499

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

879570

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

415602

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000628

AC:

AN:

143230

Hom.:

Cov.:

AF XY:

0.0000430

AC XY:

AN XY:

69764

show subpopulations

Gnomad4 AFR

AF:

0.000127

Gnomad4 AMR

AF:

0.0000685

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000205

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000154

Gnomad4 OTH

AF:

0.000499

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Beckwith-Wiedemann syndrome;C1846009:IMAGe syndrome

Uncertain:1

May 20, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Beckwith-Wiedemann syndrome

Benign:1

Sep 28, 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

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.

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