chr20-45704466-C-T

Position:

• chr20-45704466-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_172005.2(WFDC13):​c.111C>T​(p.Pro37=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00213 in 1,613,946 control chromosomes in the GnomAD database, including 62 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.011 (36 hom., cov: 31)
  • Exomes 𝑓: 0.0012 (26 hom.)
• Consequence: WFDC13 NM_172005.2 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.102

Genes affected

WFDC13 (HGNC:16131): (WAP four-disulfide core domain 13) This gene encodes a member of the WAP-type four-disulfide core (WFDC) domain family. The WFDC domain, or WAP signature motif, contains eight cysteines forming four disulfide bonds at the core of the protein, and functions as a protease inhibitor. Most WFDC gene members are localized to chromosome 20q12-q13 in two clusters: centromeric and telomeric. This gene belongs to the telomeric cluster. [provided by RefSeq, Jul 2008]

WFDC10B (HGNC:20479): (WAP four-disulfide core domain 10B) This gene encodes a member of the WAP-type four-disulfide core (WFDC) domain family. The WFDC domain, or WAP signature motif, contains eight cysteines forming four disulfide bonds at the core of the protein, and functions as a protease inhibitor. Most WFDC gene members are localized to chromosome 20q12-q13 in two clusters: centromeric and telomeric. This gene belongs to the telomeric cluster. Two alternatively spliced transcript variants have been found for this gene, and they encode distinct isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.51).
• BP6: Variant 20-45704466-C-T is Benign according to our data. Variant chr20-45704466-C-T is described in ClinVar as [Benign]. Clinvar id is 780608.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.102 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0115 (1745/152282) while in subpopulation AFR AF= 0.04 (1660/41542). AF 95% confidence interval is 0.0384. There are 36 homozygotes in gnomad4. There are 796 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 36 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WFDC13	NM_172005.2	c.111C>T	p.Pro37=	synonymous_variant	2/4	ENST00000305479.3
WFDC10B	NM_172006.2	c.-65+31G>A		intron_variant		ENST00000330523.10
WFDC10B	NM_172131.2	c.139+31G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WFDC13	ENST00000305479.3	c.111C>T	p.Pro37=	synonymous_variant	2/4	1	NM_172005.2	P1
WFDC10B	ENST00000330523.10	c.-65+31G>A		intron_variant		1	NM_172006.2	P1
WFDC10B	ENST00000335769.2	c.139+31G>A		intron_variant		1

Frequencies

GnomAD3 genomes AF: 0.0115 AC: 1747 AN: 152164 Hom.: 36 Cov.: 31

Gnomad AFR AF: 0.0401

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00445

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: 0.0000147

Gnomad OTH AF: 0.00765

GnomAD3 exomes AF: 0.00290 AC: 726 AN: 250724 Hom.: 11 AF XY: 0.00198 AC XY: 268 AN XY: 135444

Gnomad AFR exome AF: 0.0394

Gnomad AMR exome AF: 0.00200

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000707

Gnomad OTH exome AF: 0.00131

GnomAD4 exome AF: 0.00115 AC: 1686 AN: 1461664 Hom.: 26 Cov.: 33 AF XY: 0.000948 AC XY: 689 AN XY: 727130

Gnomad4 AFR exome AF: 0.0413

Gnomad4 AMR exome AF: 0.00244

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000348

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000198

Gnomad4 OTH exome AF: 0.00270

GnomAD4 genome AF: 0.0115 AC: 1745 AN: 152282 Hom.: 36 Cov.: 31 AF XY: 0.0107 AC XY: 796 AN XY: 74474

Gnomad4 AFR AF: 0.0400

Gnomad4 AMR AF: 0.00445

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00757

Alfa AF: 0.000435 Hom.: 0

Bravo AF: 0.0132

EpiCase AF: 0.00

EpiControl AF: 0.000178

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Mar 29, 2018	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.51
CADD	Benign	4.5
DANN	Benign	0.77

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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

Other links and lift over

dbSNP: rs75216546; hg19: chr20-44333105;