Genetic Variant CDT1:p.Arg453Gly (chr16-88807362-C-G) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_030928.4(CDT1):c.1357C>G(p.Arg453Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,212 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R453W) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CDT1
NM_030928.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.14

Publications

0 publications found

Variant links:

Genes affected

CDT1 (HGNC:24576): (chromatin licensing and DNA replication factor 1) The protein encoded by this gene is involved in the formation of the pre-replication complex that is necessary for DNA replication. The encoded protein can bind geminin, which prevents replication and may function to prevent this protein from initiating replication at inappropriate origins. Phosphorylation of this protein by cyclin A-dependent kinases results in degradation of the protein. [provided by RefSeq, Mar 2011]

CDT1 Gene-Disease associations (from GenCC):

Meier-Gorlin syndrome 4
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P
Meier-Gorlin syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CDT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.787

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDT1	NM_030928.4 link	c.1357C>G	p.Arg453Gly	missense_variant	Exon 9 of 10	ENST00000301019.9	NP_112190.2	Q9H211

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDT1	ENST00000301019.9 link	c.1357C>G	p.Arg453Gly	missense_variant	Exon 9 of 10	1	NM_030928.4	ENSP00000301019.4		Q9H211
CDT1	ENST00000569140.1 link	c.*20C>G		downstream_gene_variant		3		ENSP00000456926.1		H3BSY1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460212

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726436

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26114

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51982

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111902

Other (OTH)

AF:

0.00

AC:

AN:

60336

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Pathogenic

0.41

BayesDel_noAF

Pathogenic

0.35

CADD

Uncertain

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.53

Eigen

Benign

-0.014

Eigen_PC

Benign

-0.22

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.82

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.79

MetaSVM

Uncertain

0.20

MutationAssessor

Pathogenic

3.0

PhyloP100

3.1

PrimateAI

Benign

0.42

PROVEAN

Pathogenic

-6.1

REVEL

Uncertain

0.56

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.92

MutPred

0.46

Loss of MoRF binding (P = 0.025);

MVP

0.92

MPC

0.091

ClinPred

0.99

GERP RS

0.75

Varity_R

0.74

gMVP

0.67

Mutation Taster

=57/43

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over