16-88804845-G-T

Variant names:

• chr16-88804845-G-T
• rs3218731
• NM_030928.4:c.435G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_030928.4(CDT1):​c.435G>T​(p.Gln145His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q145Q) has been classified as Benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: CDT1 NM_030928.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.237
• Publications: 2 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.062489837).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDT1	NM_030928.4	c.435G>T	p.Gln145His	missense_variant	Exon 3 of 10	ENST00000301019.9	NP_112190.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDT1	ENST00000301019.9	c.435G>T	p.Gln145His	missense_variant	Exon 3 of 10	1	NM_030928.4	ENSP00000301019.4
CDT1	ENST00000562747.1	n.141G>T		non_coding_transcript_exon_variant	Exon 2 of 5	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	11
DANN	Benign	0.65
DEOGEN2	Benign	0.057	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.025	N
LIST_S2	Benign	0.30	T
M_CAP	Benign	0.0047	T
MetaRNN	Benign	0.062	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.81	L
PhyloP100		-0.24
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.074
Sift	Benign	0.068	T
Sift4G	Benign	0.11	T
Polyphen		0.0020	B
Vest4		0.14
MutPred		0.17		Gain of catalytic residue at D146 (P = 0.0519);
MVP		0.39
MPC		0.013
ClinPred		0.034	T
GERP RS		-0.32
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.044
gMVP		0.25

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

Other links and lift over

dbSNP: rs3218731; hg19: chr16-88871253;