8-125043829-A-G

Position:

chr8-125043829-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_014846.4(WASHC5):c.2846T>C(p.Met949Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000187 in 1,605,624 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

WASHC5
NM_014846.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.24

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WASHC5	NM_014846.4 linkuse as main transcript	c.2846T>C	p.Met949Thr	missense_variant	23/29	ENST00000318410.12
WASHC5-AS1	NR_170219.1 linkuse as main transcript	n.97-670A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
WASHC5	ENST00000318410.12 linkuse as main transcript	c.2846T>C	p.Met949Thr	missense_variant	23/29	1	NM_014846.4	P1
WASHC5-AS1	ENST00000519140.1 linkuse as main transcript	n.97-670A>G		intron_variant, non_coding_transcript_variant		4
WASHC5	ENST00000517845.5 linkuse as main transcript	c.2402T>C	p.Met801Thr	missense_variant	21/27	2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152246

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

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

GnomAD4 exome

AF:

6.88e-7

AC:

AN:

1453378

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723646

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152246

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000385

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Ritscher-Schinzel syndrome;C1863704:Hereditary spastic paraplegia 8

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 14, 2024

This sequence change replaces methionine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 949 of the WASHC5 protein (p.Met949Thr). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with WASHC5-related conditions. ClinVar contains an entry for this variant (Variation ID: 1430957). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt WASHC5 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.33

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Uncertain

0.68

D;.

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.041

MetaRNN

Uncertain

0.72

D;D

MetaSVM

Benign

-0.86

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.81

PROVEAN

Uncertain

-3.1

D;D

REVEL

Pathogenic

0.73

Sift

Benign

0.12

T;T

Sift4G

Benign

0.20

T;T

Polyphen

0.22

B;P

Vest4

0.92

MutPred

0.61

Loss of stability (P = 0.0042);.;

MVP

0.90

MPC

0.28

ClinPred

0.93

GERP RS

5.3

Varity_R

0.34

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

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