8-125083738-A-G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_014846.4(WASHC5):​c.161T>C​(p.Ile54Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000348 in 1,611,128 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

WASHC5
NM_014846.4 missense

Scores

10
7

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.99

Publications

1 publications found
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 Gene-Disease associations (from GenCC):
  • Ritscher-Schinzel syndrome 1
    Inheritance: AR Classification: STRONG, LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
  • hereditary spastic paraplegia 8
    Inheritance: AD Classification: MODERATE, SUPPORTIVE Submitted by: ClinGen, Orphanet
  • Ritscher-Schinzel syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.86

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014846.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
WASHC5
NM_014846.4
MANE Select
c.161T>Cp.Ile54Thr
missense
Exon 2 of 29NP_055661.3
WASHC5
NM_001330609.2
c.-258-480T>C
intron
N/ANP_001317538.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
WASHC5
ENST00000318410.12
TSL:1 MANE Select
c.161T>Cp.Ile54Thr
missense
Exon 2 of 29ENSP00000318016.7
WASHC5
ENST00000519340.5
TSL:4
n.244T>C
non_coding_transcript_exon
Exon 2 of 4
WASHC5
ENST00000523397.1
TSL:2
n.119T>C
non_coding_transcript_exon
Exon 1 of 2

Frequencies

GnomAD3 genomes
AF:
0.0000263
AC:
4
AN:
152224
Hom.:
0
Cov.:
32
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:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000319
AC:
8
AN:
250488
AF XY:
0.0000295
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000290
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000530
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000356
AC:
52
AN:
1458786
Hom.:
0
Cov.:
30
AF XY:
0.0000386
AC XY:
28
AN XY:
725806
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33400
American (AMR)
AF:
0.0000224
AC:
1
AN:
44654
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26116
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39678
South Asian (SAS)
AF:
0.0000232
AC:
2
AN:
86156
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53348
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.0000424
AC:
47
AN:
1109390
Other (OTH)
AF:
0.0000332
AC:
2
AN:
60278
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.468
Heterozygous variant carriers
0
2
4
7
9
11
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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
AF:
0.0000263
AC:
4
AN:
152342
Hom.:
0
Cov.:
32
AF XY:
0.0000403
AC XY:
3
AN XY:
74502
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41574
American (AMR)
AF:
0.00
AC:
0
AN:
15302
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5194
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000588
AC:
4
AN:
68032
Other (OTH)
AF:
0.00
AC:
0
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.513
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000862
Hom.:
0
Bravo
AF:
0.0000151
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000330
AC:
4
EpiCase
AF:
0.000109
EpiControl
AF:
0.0000594

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
Jan 17, 2015
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

In summary, this is a rare missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "possibly damaging"; Align-GVGD: "Class C0"). This variant has not been published in the literature and is present in population databases (rs199936194, 0.05%). This sequence change replaces isoleucine with threonine at codon 54 of the KIAA0196 protein (p.Ile54Thr). The isoleucine residue is moderately conserved and there is a moderate physicochemical difference between isoleucine and threonine.

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.81
BayesDel_addAF
Pathogenic
0.33
D
BayesDel_noAF
Pathogenic
0.43
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.84
D
Eigen
Uncertain
0.60
Eigen_PC
Pathogenic
0.66
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.96
D
M_CAP
Pathogenic
0.35
D
MetaRNN
Pathogenic
0.86
D
MetaSVM
Uncertain
0.57
D
PhyloP100
9.0
PrimateAI
Pathogenic
0.82
D
PROVEAN
Uncertain
-4.1
D
REVEL
Pathogenic
0.86
Sift
Uncertain
0.0020
D
Sift4G
Uncertain
0.0020
D
Polyphen
0.63
P
Vest4
0.89
MVP
0.94
MPC
0.83
ClinPred
0.82
D
GERP RS
5.8
Varity_R
0.67
gMVP
0.76
Mutation Taster
=40/60
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.080
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: rs199936194; hg19: chr8-126095980; API