rs140769107

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_003119.4(SPG7):​c.2275G>A​(p.Ala759Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000781 in 1,613,844 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00055 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00080 ( 0 hom. )

Consequence

SPG7
NM_003119.4 missense

Scores

15

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:4

Conservation

PhyloP100: -0.0790

Publications

4 publications found
Variant links:
Genes affected
SPG7 (HGNC:11237): (SPG7 matrix AAA peptidase subunit, paraplegin) This gene encodes a mitochondrial metalloprotease protein that is a member of the AAA family. Members of this protein family share an ATPase domain and have roles in diverse cellular processes including membrane trafficking, intracellular motility, organelle biogenesis, protein folding, and proteolysis. Mutations in this gene cause autosomal recessive spastic paraplegia 7. Two transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Mar 2014]
SPG7 Gene-Disease associations (from GenCC):
  • hereditary spastic paraplegia 7
    Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, PanelApp Australia, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
  • autosomal dominant optic atrophy
    Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia
  • lateral sclerosis
    Inheritance: AD 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 -4 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.022443116).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003119.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SPG7
NM_003119.4
MANE Select
c.2275G>Ap.Ala759Thr
missense
Exon 17 of 17NP_003110.1Q9UQ90-1
SPG7
NM_001363850.1
c.*53G>A
3_prime_UTR
Exon 18 of 18NP_001350779.1A0A2R8Y3M4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SPG7
ENST00000645818.2
MANE Select
c.2275G>Ap.Ala759Thr
missense
Exon 17 of 17ENSP00000495795.2Q9UQ90-1
SPG7
ENST00000268704.7
TSL:1
c.2254G>Ap.Ala752Thr
missense
Exon 17 of 17ENSP00000268704.3A0A2U3TZH1
SPG7
ENST00000918773.1
c.2365G>Ap.Ala789Thr
missense
Exon 17 of 17ENSP00000588832.1

Frequencies

GnomAD3 genomes
AF:
0.000558
AC:
85
AN:
152206
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000145
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.000415
Gnomad FIN
AF:
0.000282
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00101
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.000561
AC:
141
AN:
251324
AF XY:
0.000611
show subpopulations
Gnomad AFR exome
AF:
0.000185
Gnomad AMR exome
AF:
0.000260
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000185
Gnomad NFE exome
AF:
0.000977
Gnomad OTH exome
AF:
0.000489
GnomAD4 exome
AF:
0.000805
AC:
1176
AN:
1461520
Hom.:
0
Cov.:
31
AF XY:
0.000776
AC XY:
564
AN XY:
727052
show subpopulations
African (AFR)
AF:
0.0000896
AC:
3
AN:
33468
American (AMR)
AF:
0.000268
AC:
12
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.000243
AC:
21
AN:
86252
European-Finnish (FIN)
AF:
0.000150
AC:
8
AN:
53306
Middle Eastern (MID)
AF:
0.000523
AC:
3
AN:
5738
European-Non Finnish (NFE)
AF:
0.000985
AC:
1095
AN:
1111814
Other (OTH)
AF:
0.000563
AC:
34
AN:
60382
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.486
Heterozygous variant carriers
0
63
126
188
251
314
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
44
88
132
176
220
<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:
0.000551
AC:
84
AN:
152324
Hom.:
0
Cov.:
32
AF XY:
0.000591
AC XY:
44
AN XY:
74472
show subpopulations
African (AFR)
AF:
0.000144
AC:
6
AN:
41584
American (AMR)
AF:
0.000196
AC:
3
AN:
15298
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.000193
AC:
1
AN:
5178
South Asian (SAS)
AF:
0.000415
AC:
2
AN:
4820
European-Finnish (FIN)
AF:
0.000282
AC:
3
AN:
10620
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00101
AC:
69
AN:
68030
Other (OTH)
AF:
0.00
AC:
0
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.503
Heterozygous variant carriers
0
5
11
16
22
27
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.000746
Hom.:
1
Bravo
AF:
0.000457
TwinsUK
AF:
0.00162
AC:
6
ALSPAC
AF:
0.00234
AC:
9
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00128
AC:
11
ExAC
AF:
0.000568
AC:
69
EpiCase
AF:
0.000927
EpiControl
AF:
0.000711

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
3
3
not provided (6)
-
3
1
Hereditary spastic paraplegia 7 (4)
-
1
-
Hereditary spastic paraplegia (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.068
BayesDel_addAF
Benign
-0.43
T
BayesDel_noAF
Benign
-0.39
CADD
Benign
4.1
DANN
Benign
0.83
DEOGEN2
Benign
0.049
T
Eigen
Benign
-1.6
Eigen_PC
Benign
-1.6
FATHMM_MKL
Benign
0.12
N
LIST_S2
Benign
0.63
T
M_CAP
Benign
0.072
D
MetaRNN
Benign
0.022
T
MetaSVM
Benign
-0.66
T
MutationAssessor
Benign
1.8
L
PhyloP100
-0.079
PrimateAI
Benign
0.30
T
REVEL
Benign
0.13
Polyphen
0.021
B
MVP
0.52
MPC
0.20
ClinPred
0.016
T
GERP RS
-5.7
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.026
gMVP
0.32
Mutation Taster
=93/7
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: rs140769107; hg19: chr16-89623388; COSMIC: COSV99244799; COSMIC: COSV99244799; API