15-44563298-A-T

Variant names:

• chr15-44563298-A-T
• rs778305085
• NM_025137.4:c.7155T>A

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1_Moderate PM2 PP5_Very_Strong

The NM_025137.4(SPG11):​c.7155T>A​(p.Tyr2385*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SPG11 NM_025137.4 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 0.109

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]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0241 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 15-44563298-A-T is Pathogenic according to our data. Variant chr15-44563298-A-T is described in ClinVar as [Pathogenic]. Clinvar id is 872175.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr15-44563298-A-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPG11	NM_025137.4	c.7155T>A	p.Tyr2385*	stop_gained	Exon 40 of 40	ENST00000261866.12	NP_079413.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPG11	ENST00000261866.12	c.7155T>A	p.Tyr2385*	stop_gained	Exon 40 of 40	1	NM_025137.4	ENSP00000261866.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary spastic paraplegia 11 Pathogenic:2

Jul 01, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Tyr2385*) in the SPG11 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 59 amino acid(s) of the SPG11 protein. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SPG11-related conditions. ClinVar contains an entry for this variant (Variation ID: 872175). This variant disrupts a region of the SPG11 protein in which other variant(s) (p.His2388Thrfs*6) have been determined to be pathogenic (Invitae). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

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Genome-Nilou Lab

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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not provided Pathogenic:1

Jul 01, 2019

CeGaT Center for Human Genetics Tuebingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.071	D
BayesDel_noAF	Benign	-0.14
CADD	Pathogenic	36
DANN	Uncertain	0.99
DEOGEN2	Benign	0.010	T
Eigen	Uncertain	0.19
Eigen_PC	Benign	-0.0090
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.33	T
MetaRNN	Benign	0.38	T
MetaSVM	Benign	-1.1	T
PROVEAN	Benign	0.99	N
REVEL	Benign	0.068
Sift	Benign	0.061	T
Sift4G	Uncertain	0.0090	D
Polyphen		0.30	B
Vest4		0.59
MutPred		0.42		Gain of solvent accessibility (P = 4e-04);
MVP		0.83
ClinPred		0.55	D
GERP RS		3.1

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

LitVar

Other links and lift over

dbSNP: rs778305085; hg19: chr15-44855496;