Genetic Variant CWC27:p.Leu17Leu (chr5-64774697-T-C) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 2P and 11B. PM2BP4_StrongBP6_ModerateBP7BS1

The NM_005869.4(CWC27):c.49T>C(p.Leu17Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000043 in 1,559,690 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000035 ( 1 hom. )

Consequence

CWC27
NM_005869.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: 0.338

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 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.53).

BP6

Variant 5-64774697-T-C is Benign according to our data. Variant chr5-64774697-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 749565.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.338 with no splicing effect.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000118 (18/152368) while in subpopulation EAS AF= 0.00077 (4/5194). AF 95% confidence interval is 0.000263. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CWC27	NM_005869.4 link	c.49T>C	p.Leu17Leu	synonymous_variant	Exon 2 of 14	ENST00000381070.8	NP_005860.2	Q6UX04-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CWC27	ENST00000381070.8 link	c.49T>C	p.Leu17Leu	synonymous_variant	Exon 2 of 14	1	NM_005869.4	ENSP00000370460.2		Q6UX04-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152250

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000289

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000768

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000859

AC:

AN:

209620

Hom.:

AF XY:

0.000105

AC XY:

AN XY:

114338

show subpopulations

Gnomad AFR exome

AF:

0.000282

Gnomad AMR exome

AF:

0.0000428

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000636

Gnomad SAS exome

AF:

0.000175

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000348

AC:

AN:

1407322

Hom.:

Cov.:

AF XY:

0.0000314

AC XY:

AN XY:

700188

show subpopulations

Gnomad4 AFR exome

AF:

0.0000652

Gnomad4 AMR exome

AF:

0.0000286

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000369

Gnomad4 SAS exome

AF:

0.000143

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.19e-7

Gnomad4 OTH exome

AF:

0.000345

GnomAD4 genome

AF:

0.000118

AC:

AN:

152368

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74518

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000770

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Bravo

AF:

0.0000793

Asia WGS

AF:

0.00434

AC:

AN:

3474

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

CWC27-related disorder

Benign:1

Sep 17, 2024

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Jan 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.53

CADD

Benign

6.9

DANN

Benign

0.73

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