rs140627086

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_004715.5(CTDP1):​c.2274G>A​(p.Pro758Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00509 in 1,613,568 control chromosomes in the GnomAD database, including 27 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0029 ( 1 hom., cov: 33)
Exomes 𝑓: 0.0053 ( 26 hom. )

Consequence

CTDP1
NM_004715.5 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -1.57

Publications

1 publications found
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 Gene-Disease associations (from GenCC):
  • congenital cataracts-facial dysmorphism-neuropathy syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.89).
BP6
Variant 18-79717873-G-A is Benign according to our data. Variant chr18-79717873-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 210803.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-1.58 with no splicing effect.
BS2
High Homozygotes in GnomAdExome4 at 26 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CTDP1NM_004715.5 linkc.2274G>A p.Pro758Pro synonymous_variant Exon 10 of 13 ENST00000613122.5 NP_004706.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CTDP1ENST00000613122.5 linkc.2274G>A p.Pro758Pro synonymous_variant Exon 10 of 13 1 NM_004715.5 ENSP00000484525.2
CTDP1ENST00000075430.11 linkc.2274G>A p.Pro758Pro synonymous_variant Exon 10 of 12 1 ENSP00000075430.7
CTDP1ENST00000591598.5 linkc.2070G>A p.Pro690Pro synonymous_variant Exon 10 of 12 1 ENSP00000465119.1
CTDP1ENST00000299543.9 linkc.894G>A p.Pro298Pro synonymous_variant Exon 3 of 4 5 ENSP00000299543.9

Frequencies

GnomAD3 genomes
AF:
0.00288
AC:
438
AN:
152184
Hom.:
1
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000989
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00216
Gnomad ASJ
AF:
0.00202
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00248
Gnomad FIN
AF:
0.00273
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00451
Gnomad OTH
AF:
0.00383
GnomAD2 exomes
AF:
0.00325
AC:
815
AN:
250840
AF XY:
0.00328
show subpopulations
Gnomad AFR exome
AF:
0.00118
Gnomad AMR exome
AF:
0.00185
Gnomad ASJ exome
AF:
0.00238
Gnomad EAS exome
AF:
0.000272
Gnomad FIN exome
AF:
0.00363
Gnomad NFE exome
AF:
0.00474
Gnomad OTH exome
AF:
0.00360
GnomAD4 exome
AF:
0.00531
AC:
7765
AN:
1461266
Hom.:
26
Cov.:
35
AF XY:
0.00519
AC XY:
3772
AN XY:
726976
show subpopulations
African (AFR)
AF:
0.000956
AC:
32
AN:
33478
American (AMR)
AF:
0.00152
AC:
68
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00176
AC:
46
AN:
26130
East Asian (EAS)
AF:
0.000101
AC:
4
AN:
39696
South Asian (SAS)
AF:
0.00250
AC:
216
AN:
86258
European-Finnish (FIN)
AF:
0.00337
AC:
178
AN:
52858
Middle Eastern (MID)
AF:
0.00173
AC:
10
AN:
5768
European-Non Finnish (NFE)
AF:
0.00623
AC:
6927
AN:
1111970
Other (OTH)
AF:
0.00470
AC:
284
AN:
60388
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
540
1080
1620
2160
2700
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
266
532
798
1064
1330
<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
AF:
0.00289
AC:
440
AN:
152302
Hom.:
1
Cov.:
33
AF XY:
0.00263
AC XY:
196
AN XY:
74474
show subpopulations
African (AFR)
AF:
0.000986
AC:
41
AN:
41578
American (AMR)
AF:
0.00222
AC:
34
AN:
15302
Ashkenazi Jewish (ASJ)
AF:
0.00202
AC:
7
AN:
3472
East Asian (EAS)
AF:
0.000193
AC:
1
AN:
5172
South Asian (SAS)
AF:
0.00269
AC:
13
AN:
4834
European-Finnish (FIN)
AF:
0.00273
AC:
29
AN:
10616
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00451
AC:
307
AN:
68012
Other (OTH)
AF:
0.00379
AC:
8
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.499
Heterozygous variant carriers
0
21
42
64
85
106
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00370
Hom.:
0
Bravo
AF:
0.00312
Asia WGS
AF:
0.00231
AC:
8
AN:
3478
EpiCase
AF:
0.00442
EpiControl
AF:
0.00445

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:4
Clinical Genetics, Academic Medical Center
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

Apr 12, 2016
Genetic Services Laboratory, University of Chicago
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Genome Diagnostics Laboratory, University Medical Center Utrecht
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

Jun 17, 2015
Eurofins Ntd Llc (ga)
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

not provided Benign:4
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

Sep 01, 2025
CeGaT Center for Human Genetics Tuebingen
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

CTDP1: BP4, BP7, BS2

Jan 30, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Breakthrough Genomics, Breakthrough Genomics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:not provided

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.89
CADD
Benign
0.29
DANN
Benign
0.66
PhyloP100
-1.6
Mutation Taster
=99/1
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.10
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs140627086; hg19: chr18-77477873; COSMIC: COSV99311381; API