rs771083813

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_025137.4(SPG11):​c.20T>G​(p.Val7Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000313 in 1,595,124 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V7F) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000028 ( 0 hom. )

Consequence

SPG11
NM_025137.4 missense

Scores

19

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.12

Publications

1 publications found
Variant links:
Genes affected
SPG11 (HGNC:11226): (SPG11 vesicle trafficking associated, spatacsin) The protein encoded by this gene is a potential transmembrane protein that is phosphorylated upon DNA damage. Defects in this gene are a cause of spastic paraplegia type 11 (SPG11). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2009]
SPG11 Gene-Disease associations (from GenCC):
  • hereditary spastic paraplegia 11
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Illumina, G2P
  • amyotrophic lateral sclerosis type 5
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
  • Charcot-Marie-Tooth disease axonal type 2X
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
  • juvenile amyotrophic lateral sclerosis
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.06420919).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SPG11NM_025137.4 linkc.20T>G p.Val7Gly missense_variant Exon 1 of 40 ENST00000261866.12 NP_079413.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SPG11ENST00000261866.12 linkc.20T>G p.Val7Gly missense_variant Exon 1 of 40 1 NM_025137.4 ENSP00000261866.7 Q96JI7-1

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
151990
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.000288
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:
0.00
GnomAD2 exomes
AF:
0.00000939
AC:
2
AN:
213024
AF XY:
0.00000843
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000109
Gnomad EAS exome
AF:
0.0000590
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000277
AC:
4
AN:
1443134
Hom.:
0
Cov.:
32
AF XY:
0.00000279
AC XY:
2
AN XY:
717600
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33366
American (AMR)
AF:
0.00
AC:
0
AN:
43632
Ashkenazi Jewish (ASJ)
AF:
0.0000776
AC:
2
AN:
25770
East Asian (EAS)
AF:
0.0000254
AC:
1
AN:
39436
South Asian (SAS)
AF:
0.00
AC:
0
AN:
84876
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
42062
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5740
European-Non Finnish (NFE)
AF:
9.02e-7
AC:
1
AN:
1108310
Other (OTH)
AF:
0.00
AC:
0
AN:
59942
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.438
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00000658
AC:
1
AN:
151990
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74248
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41366
American (AMR)
AF:
0.00
AC:
0
AN:
15274
Ashkenazi Jewish (ASJ)
AF:
0.000288
AC:
1
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5168
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10596
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67974
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000434
Hom.:
0
ExAC
AF:
0.00000834
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Jul 05, 2024
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.20T>G (p.V7G) alteration is located in exon 1 (coding exon 1) of the SPG11 gene. This alteration results from a T to G substitution at nucleotide position 20, causing the valine (V) at amino acid position 7 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.060
BayesDel_addAF
Benign
-0.25
T
BayesDel_noAF
Benign
-0.42
CADD
Benign
8.6
DANN
Benign
0.39
DEOGEN2
Benign
0.0079
T;.;T;.;.
Eigen
Benign
-1.1
Eigen_PC
Benign
-1.1
FATHMM_MKL
Benign
0.26
N
LIST_S2
Benign
0.41
T;T;T;T;T
M_CAP
Benign
0.039
D
MetaRNN
Benign
0.064
T;T;T;T;T
MetaSVM
Benign
-0.89
T
MutationAssessor
Benign
0.0
N;N;.;N;.
PhyloP100
1.1
PrimateAI
Benign
0.44
T
PROVEAN
Benign
-0.40
N;N;N;N;N
REVEL
Benign
0.18
Sift
Benign
0.41
T;T;T;T;T
Sift4G
Benign
0.24
T;T;T;T;T
Polyphen
0.0010
B;.;B;.;.
Vest4
0.18
MutPred
0.25
Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);
MVP
0.26
MPC
0.044
ClinPred
0.050
T
GERP RS
3.7
PromoterAI
-0.21
Neutral
Varity_R
0.031
gMVP
0.22
Mutation Taster
=94/6
polymorphism

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

Other links and lift over

dbSNP: rs771083813; hg19: chr15-44955826; COSMIC: COSV55996808; COSMIC: COSV55996808; API