chr16-88803961-A-C

Position:

• chr16-88803961-A-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_030928.4(CDT1):​c.130A>C​(p.Thr44Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00176 in 1,427,622 control chromosomes in the GnomAD database, including 40 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0090 (22 hom., cov: 32)
  • Exomes 𝑓: 0.00090 (18 hom.)
• Consequence: CDT1 NM_030928.4 missense
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.280

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0033073127).
• BP6: Variant 16-88803961-A-C is Benign according to our data. Variant chr16-88803961-A-C is described in ClinVar as [Benign]. Clinvar id is 128667.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-88803961-A-C is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00903 (1362/150906) while in subpopulation AFR AF= 0.0305 (1255/41208). AF 95% confidence interval is 0.0291. There are 22 homozygotes in gnomad4. There are 633 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 22 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CDT1	NM_030928.4	c.130A>C	p.Thr44Pro	missense_variant	1/10	ENST00000301019.9	NP_112190.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDT1	ENST00000301019.9	c.130A>C	p.Thr44Pro	missense_variant	1/10	1	NM_030928.4	ENSP00000301019.4

Frequencies

GnomAD3 genomes AF: 0.00899 AC: 1356 AN: 150794 Hom.: 22 Cov.: 32

Gnomad AFR AF: 0.0304

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00521

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000209

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000207

Gnomad OTH AF: 0.00676

GnomAD3 exomes AF: 0.000577 AC: 39 AN: 67570 Hom.: 0 AF XY: 0.000481 AC XY: 19 AN XY: 39500

Gnomad AFR exome AF: 0.0296

Gnomad AMR exome AF: 0.00106

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00199

GnomAD4 exome AF: 0.000898 AC: 1146 AN: 1276716 Hom.: 18 Cov.: 31 AF XY: 0.000785 AC XY: 494 AN XY: 629580

Gnomad4 AFR exome AF: 0.0316

Gnomad4 AMR exome AF: 0.00203

Gnomad4 ASJ exome AF: 0.0000472

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000584

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000151

Gnomad4 OTH exome AF: 0.00260

GnomAD4 genome AF: 0.00903 AC: 1362 AN: 150906 Hom.: 22 Cov.: 32 AF XY: 0.00859 AC XY: 633 AN XY: 73722

Gnomad4 AFR AF: 0.0305

Gnomad4 AMR AF: 0.00520

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000207

Gnomad4 OTH AF: 0.00669

Alfa AF: 0.00151 Hom.: 1

ExAC AF: 0.000560 AC: 8

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 24, 2024	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Oct 04, 2016	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.046
BayesDel_addAF	Benign	-0.59	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	4.7
DANN	Benign	0.53
DEOGEN2	Benign	0.017	T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.0053	N
LIST_S2	Benign	0.18	T
MetaRNN	Benign	0.0033	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.13	N
MutationTaster	Benign	1.0	P
PrimateAI	Pathogenic	0.84	D
PROVEAN	Benign	-0.23	N
REVEL	Benign	0.020
Sift	Benign	0.40	T
Sift4G	Benign	0.33	T
Polyphen		0.0	B
Vest4		0.024
MVP		0.32
MPC		1.6
ClinPred		0.00069	T
GERP RS		-2.5
Varity_R		0.053
gMVP		0.10

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: rs587780306; hg19: chr16-88870369; COSMIC: COSV56348179; COSMIC: COSV56348179;