5-64885498-CA-CAA

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_005869.4(CWC27):​c.1002dupA​(p.Val335SerfsTer13) variant causes a frameshift change. The variant allele was found at a frequency of 0.0000151 in 1,455,696 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000015 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

CWC27
NM_005869.4 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:6

Conservation

PhyloP100: 4.17

Publications

4 publications found
Variant links:
Genes affected
CWC27 (HGNC:10664): (CWC27 spliceosome associated cyclophilin) Predicted to enable peptidyl-prolyl cis-trans isomerase activity. Predicted to be involved in protein peptidyl-prolyl isomerization. Located in nucleoplasm. Part of U2-type precatalytic spliceosome and catalytic step 2 spliceosome. [provided by Alliance of Genome Resources, Apr 2022]
CWC27 Gene-Disease associations (from GenCC):
  • metaphyseal chondrodysplasia-retinitis pigmentosa syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 5-64885498-C-CA is Pathogenic according to our data. Variant chr5-64885498-C-CA is described in ClinVar as Pathogenic. ClinVar VariationId is 426073.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005869.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CWC27
NM_005869.4
MANE Select
c.1002dupAp.Val335SerfsTer13
frameshift
Exon 11 of 14NP_005860.2Q6UX04-1
CWC27
NM_001297644.1
c.1002dupAp.Val335SerfsTer13
frameshift
Exon 11 of 13NP_001284573.1Q6UX04
CWC27
NM_001364478.1
c.1002dupAp.Val335SerfsTer13
frameshift
Exon 11 of 12NP_001351407.1A0A8I5KUW8

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CWC27
ENST00000381070.8
TSL:1 MANE Select
c.1002dupAp.Val335SerfsTer13
frameshift
Exon 11 of 14ENSP00000370460.2Q6UX04-1
CWC27
ENST00000693660.1
c.903dupAp.Val302SerfsTer13
frameshift
Exon 10 of 13ENSP00000509052.1A0A8I5KST0
CWC27
ENST00000688318.1
c.1002dupAp.Val335SerfsTer13
frameshift
Exon 11 of 15ENSP00000508653.1A0A8I5KX65

Frequencies

GnomAD3 genomes
AF:
0.00
AC:
0
AN:
150934
Hom.:
0
Cov.:
31
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000590
AC:
14
AN:
237276
AF XY:
0.0000705
show subpopulations
Gnomad AFR exome
AF:
0.0000668
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000170
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000750
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000151
AC:
22
AN:
1455696
Hom.:
0
Cov.:
31
AF XY:
0.0000221
AC XY:
16
AN XY:
723408
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000299
AC:
1
AN:
33394
American (AMR)
AF:
0.00
AC:
0
AN:
44014
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25928
East Asian (EAS)
AF:
0.0000505
AC:
2
AN:
39580
South Asian (SAS)
AF:
0.0000471
AC:
4
AN:
84894
European-Finnish (FIN)
AF:
0.0000188
AC:
1
AN:
53084
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5758
European-Non Finnish (NFE)
AF:
0.0000108
AC:
12
AN:
1108814
Other (OTH)
AF:
0.0000332
AC:
2
AN:
60230
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000221728), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.359
Heterozygous variant carriers
0
2
4
6
8
10
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
150934
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
73600
African (AFR)
AF:
0.00
AC:
0
AN:
41050
American (AMR)
AF:
0.00
AC:
0
AN:
15138
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3456
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5174
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4772
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10328
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67718
Other (OTH)
AF:
0.00
AC:
0
AN:
2072
Alfa
AF:
0.00
Hom.:
0

ClinVar

ClinVar submissions
Significance:Pathogenic
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
4
-
-
Metaphyseal chondrodysplasia-retinitis pigmentosa syndrome (4)
1
-
-
not provided (1)
1
-
-
Retinal dystrophy (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
PhyloP100
4.2
Mutation Taster
=0/200
disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs752159903; hg19: chr5-64181325; COSMIC: COSV66885657; API