NM_001122630.2:c.317C>A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4BS2

The NM_001122630.2(CDKN1C):c.317C>A(p.Pro106Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000113 in 1,499,954 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P106L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

CDKN1C
NM_001122630.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.43

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: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.26698387).

BS2

High AC in GnomAdExome4 at 16 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

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CDKN1C	NM_001122630.2	MANE Select	c.317C>A	p.Pro106Gln	missense	Exon 2 of 4	NP_001116102.1
CDKN1C	NM_000076.2		c.350C>A	p.Pro117Gln	missense	Exon 1 of 3	NP_000067.1
CDKN1C	NM_001362474.2		c.350C>A	p.Pro117Gln	missense	Exon 1 of 3	NP_001349403.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CDKN1C	ENST00000440480.8	TSL:1 MANE Select	c.317C>A	p.Pro106Gln	missense	Exon 2 of 4	ENSP00000411257.2
CDKN1C	ENST00000414822.8	TSL:1	c.350C>A	p.Pro117Gln	missense	Exon 1 of 3	ENSP00000413720.3
CDKN1C	ENST00000430149.3	TSL:1	c.350C>A	p.Pro117Gln	missense	Exon 1 of 3	ENSP00000411552.2

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152060

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

101642

AF XY:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000119

AC:

AN:

1347894

Hom.:

Cov.:

AF XY:

0.0000121

AC XY:

AN XY:

663724

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28264

American (AMR)

AF:

0.00

AC:

AN:

30218

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23016

East Asian (EAS)

AF:

0.00

AC:

AN:

33650

South Asian (SAS)

AF:

0.00

AC:

AN:

73390

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33656

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4314

European-Non Finnish (NFE)

AF:

0.0000150

AC:

AN:

1065202

Other (OTH)

AF:

0.00

AC:

AN:

56184

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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:

0.00000658

AC:

AN:

152060

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74266

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41450

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10594

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67940

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Beckwith-Wiedemann syndrome

Uncertain:1

Sep 10, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ClinVar contains an entry for this variant (Variation ID: 1465170). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CDKN1C protein function. This variant has not been reported in the literature in individuals affected with CDKN1C-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 117 of the CDKN1C protein (p.Pro117Gln).

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.070

BayesDel_noAF

Benign

-0.34

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.060

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.42

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.47

M_CAP

Pathogenic

1.0

MetaRNN

Benign

0.27

MetaSVM

Benign

-0.28

MutationAssessor

Benign

0.69

PhyloP100

3.4

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-0.67

REVEL

Benign

0.20

Sift

Uncertain

0.0090

Sift4G

Uncertain

0.039

Polyphen

0.49

Vest4

0.15

MutPred

0.29

Gain of loop (P = 0.0079)

MVP

0.42

MPC

2.4

ClinPred

0.72

GERP RS

1.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.11

gMVP

0.27

Mutation Taster

=92/8

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over