15-44663550-A-T

Variant names:

• chr15-44663550-A-T
• rs1555384018
• NM_025137.4:c.98T>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_025137.4(SPG11):​c.98T>A​(p.Val33Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V33A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SPG11 NM_025137.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.97
• Publications: 0 publications found

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

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPG11	NM_025137.4	c.98T>A	p.Val33Asp	missense_variant	Exon 1 of 40	ENST00000261866.12	NP_079413.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPG11	ENST00000261866.12	c.98T>A	p.Val33Asp	missense_variant	Exon 1 of 40	1	NM_025137.4	ENSP00000261866.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.59
BayesDel_addAF	Uncertain	0.058	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	23
DANN	Uncertain	0.98
DEOGEN2	Benign	0.012	T;.;T;.;.
Eigen	Benign	0.13
Eigen_PC	Benign	0.025
FATHMM_MKL	Benign	0.62	D
LIST_S2	Uncertain	0.89	D;D;D;D;D
M_CAP	Uncertain	0.13	D
MetaRNN	Uncertain	0.64	D;D;D;D;D
MetaSVM	Uncertain	0.10	D
MutationAssessor	Uncertain	2.2	M;M;.;M;.
PhyloP100		3.0
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	-1.0	N;N;N;N;N
REVEL	Uncertain	0.30
Sift	Uncertain	0.0030	D;D;D;D;D
Sift4G	Uncertain	0.0070	D;D;D;D;D
Polyphen		0.96	D;.;D;.;.
Vest4		0.59
MutPred		0.27		Gain of helix (P = 0.0078);Gain of helix (P = 0.0078);Gain of helix (P = 0.0078);Gain of helix (P = 0.0078);Gain of helix (P = 0.0078);
MVP		0.86
MPC		0.18
ClinPred		0.90	D
GERP RS		5.5
PromoterAI		0.040	Neutral
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.1
Varity_R		0.30
gMVP		0.70

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

Other links and lift over

dbSNP: rs1555384018; hg19: chr15-44955748;