20-3802036-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_021873.4(CDC25B):c.1034C>T(p.Pro345Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000699 in 1,430,138 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: CDC25B NM_021873.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.45

Genes affected

CDC25B (HGNC:1726): (cell division cycle 25B) CDC25B is a member of the CDC25 family of phosphatases. CDC25B activates the cyclin dependent kinase CDC2 by removing two phosphate groups and it is required for entry into mitosis. CDC25B shuttles between the nucleus and the cytoplasm due to nuclear localization and nuclear export signals. The protein is nuclear in the M and G1 phases of the cell cycle and moves to the cytoplasm during S and G2. CDC25B has oncogenic properties, although its role in tumor formation has not been determined. Multiple transcript variants for this gene exist. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.854

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDC25B	NM_021873.4	c.1034C>T	p.Pro345Leu	missense_variant	10/16	ENST00000245960.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDC25B	ENST00000245960.10	c.1034C>T	p.Pro345Leu	missense_variant	10/16	1	NM_021873.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.99e-7 AC: 1 AN: 1430138 Hom.: 0 Cov.: 32 AF XY: 0.00000141 AC XY: 1 AN XY: 708802

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000266

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 Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 22, 2023

The c.1034C>T (p.P345L) alteration is located in exon 10 (coding exon 10) of the CDC25B gene. This alteration results from a C to T substitution at nucleotide position 1034, causing the proline (P) at amino acid position 345 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
Cadd	Uncertain	24
Dann	Uncertain	1.0
DEOGEN2	Benign	0.18	T;.;T;.;.
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	D;D;D;D;D
M_CAP	Pathogenic	0.42	D
MetaRNN	Pathogenic	0.85	D;D;D;D;D
MetaSVM	Uncertain	-0.071	T
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.55	T
PROVEAN	Pathogenic	-6.9	D;D;D;D;D
REVEL	Uncertain	0.43
Sift	Uncertain	0.013	D;D;D;D;D
Sift4G	Uncertain	0.018	D;D;D;D;D
Polyphen		1.0	.;D;D;D;D
Vest4		0.66
MutPred		0.56		.;.;Gain of MoRF binding (P = 0.0659);.;.;
MVP		0.52
MPC		0.93
ClinPred		0.98	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.42
gMVP		0.55

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

LitVar

Other links and lift over

dbSNP: rs756602132; hg19: chr20-3782683; COSMIC: COSV99847450; COSMIC: COSV99847450;