chr8-125043911-A-G

Position:

chr8-125043911-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_014846.4(WASHC5):c.2771-7T>C variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000334 in 1,610,748 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0016 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00020 ( 2 hom. )

Consequence

WASHC5
NM_014846.4 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.0007740

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.0780

Variant links:

Genes affected

WASHC5 (HGNC:28984): (WASH complex subunit 5) This gene encodes a 134 kDa protein named strumpellin that is predicted to have multiple transmembrane domains and a spectrin-repeat-containing domain. This ubiquitously expressed gene has its highest expression in skeletal muscle. The protein is named for Strumpell disease; a form of hereditary spastic paraplegia (HSP). Spastic paraplegias are a diverse group of disorders in which the autosomal dominant forms are characterized by progressive, lower extremity spasticity caused by axonal degeneration in the terminal portions of the longest descending and ascending corticospinal tracts. More than 30 loci (SPG1-33) have been implicated in hereditary spastic paraplegia diseases. [provided by RefSeq, Aug 2009]

WASHC5 links:

WASHC5-AS1 (HGNC:43440): (WASHC5 antisense RNA 1)

WASHC5-AS1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 8-125043911-A-G is Benign according to our data. Variant chr8-125043911-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 195766.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00165 (251/152326) while in subpopulation AFR AF= 0.00585 (243/41568). AF 95% confidence interval is 0.00524. There are 1 homozygotes in gnomad4. There are 118 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WASHC5	NM_014846.4 linkuse as main transcript	c.2771-7T>C		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000318410.12
WASHC5-AS1	NR_170219.1 linkuse as main transcript	n.97-588A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Appris
WASHC5	ENST00000318410.12 linkuse as main transcript	c.2771-7T>C	splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant	1	NM_014846.4	P1
WASHC5-AS1	ENST00000519140.1 linkuse as main transcript	n.97-588A>G	intron_variant, non_coding_transcript_variant	4
WASHC5	ENST00000517845.5 linkuse as main transcript	c.2327-7T>C	splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant	2

Frequencies

GnomAD3 genomes

AF:

0.00165

AC:

251

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00586

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00239

GnomAD3 exomes

AF:

0.000446

AC:

112

AN:

251050

Hom.:

AF XY:

0.000309

AC XY:

AN XY:

135714

show subpopulations

Gnomad AFR exome

AF:

0.00647

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000197

AC:

287

AN:

1458422

Hom.:

Cov.:

AF XY:

0.000189

AC XY:

137

AN XY:

725842

show subpopulations

Gnomad4 AFR exome

AF:

0.00719

Gnomad4 AMR exome

AF:

0.000380

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000431

GnomAD4 genome

AF:

0.00165

AC:

251

AN:

152326

Hom.:

Cov.:

AF XY:

0.00158

AC XY:

118

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.00585

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.000982

Hom.:

Bravo

AF:

0.00202

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 8

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Dec 05, 2014

- -

Hereditary spastic paraplegia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Jul 02, 2021

- -

Ritscher-Schinzel syndrome;C1863704:Hereditary spastic paraplegia 8

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 05, 2023

- -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Oct 14, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

5.6

DANN

Benign

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00077

dbscSNV1_RF

Benign

0.046

SpliceAI score (max)

0.020

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