Variant 18-79679961-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_004715.5(CTDP1):c.14C>T(p.Ala5Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000239 in 1,380,722 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

CTDP1
NM_004715.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.255

Variant links:

Genes affected

CTDP1 (HGNC:2498): (CTD phosphatase subunit 1) This gene encodes a protein which interacts with the carboxy-terminus of the RAP74 subunit of transcription initiation factor TFIIF, and functions as a phosphatase that processively dephosphorylates the C-terminus of POLR2A (a subunit of RNA polymerase II), making it available for initiation of gene expression. Mutations in this gene are associated with congenital cataracts, facial dysmorphism and neuropathy syndrome (CCFDN). Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Feb 2011]

CTDP1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.052743196).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CTDP1	NM_004715.5 linkuse as main transcript	c.14C>T	p.Ala5Val	missense_variant	1/13	ENST00000613122.5	NP_004706.3	Q9Y5B0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CTDP1	ENST00000613122.5 linkuse as main transcript	c.14C>T	p.Ala5Val	missense_variant	1/13	1	NM_004715.5	ENSP00000484525.2		Q9Y5B0-1
CTDP1	ENST00000075430.11 linkuse as main transcript	c.14C>T	p.Ala5Val	missense_variant	1/12	1		ENSP00000075430.7		Q9Y5B0-4

Frequencies

GnomAD3 genomes

AF:

0.0000264

AC:

AN:

151386

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:

0.0000590

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000236

AC:

AN:

1229336

Hom.:

Cov.:

AF XY:

0.0000182

AC XY:

AN XY:

604788

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000292

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000264

AC:

AN:

151386

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73936

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000590

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 30, 2022

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. This variant has not been reported in the literature in individuals affected with CTDP1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 5 of the CTDP1 protein (p.Ala5Val). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.056

T;.

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.0089

LIST_S2

Benign

0.43

T;T

M_CAP

Benign

0.028

MetaRNN

Benign

0.053

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.46

N;N

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-1.0

.;N

REVEL

Benign

0.012

Sift

Benign

0.11

.;T

Sift4G

Benign

0.22

T;T

Polyphen

0.0010

B;B

Vest4

0.098

MutPred

0.13

Loss of methylation at R8 (P = 0.1084);Loss of methylation at R8 (P = 0.1084);

MVP

0.33

ClinPred

0.079

GERP RS

0.63

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.038

gMVP

0.41

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over