15-44598333-GGTT-G

Variant names:

• chr15-44598333-GGTT-G
• rs759504944
• NM_025137.4:c.3930_3932delAAC

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 1P and 6B. PM4_Supporting BP6_Moderate BS1

The NM_025137.4(SPG11):​c.3930_3932delAAC​(p.Thr1311del) variant causes a disruptive inframe deletion change. The variant allele was found at a frequency of 0.0000576 in 1,614,014 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. T1310T) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000085 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000055 (1 hom.)
• Consequence: SPG11 NM_025137.4 disruptive_inframe_deletion
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.93
• 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: Likely_benign. The variant received -5 ACMG points.

• PM4: Nonframeshift variant in NON repetitive region in NM_025137.4. Strenght limited to Supporting due to length of the change: 1aa.
• BP6: Variant 15-44598333-GGTT-G is Benign according to our data. Variant chr15-44598333-GGTT-G is described in ClinVar as [Likely_benign]. Clinvar id is 534911.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000854 (13/152272) while in subpopulation EAS AF = 0.00231 (12/5186). AF 95% confidence interval is 0.00133. There are 0 homozygotes in GnomAd4. There are 9 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPG11	NM_025137.4	c.3930_3932delAAC	p.Thr1311del	disruptive_inframe_deletion	Exon 23 of 40	ENST00000261866.12	NP_079413.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPG11	ENST00000261866.12	c.3930_3932delAAC	p.Thr1311del	disruptive_inframe_deletion	Exon 23 of 40	1	NM_025137.4	ENSP00000261866.7

Frequencies

GnomAD3 genomes AF: 0.0000854 AC: 13 AN: 152154 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00231

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000342 AC: 86 AN: 251328 AF XY: 0.000258

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00462

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000547 AC: 80 AN: 1461742 Hom.: 1 AF XY: 0.0000426 AC XY: 31 AN XY: 727180

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00174 AC: 69 AN: 39686

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111940

Other (OTH) AF: 0.0000994 AC: 6 AN: 60384

GnomAD4 genome AF: 0.0000854 AC: 13 AN: 152272 Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9 AN XY: 74454

African (AFR) AF: 0.00 AC: 0 AN: 41542

American (AMR) AF: 0.00 AC: 0 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00231 AC: 12 AN: 5186

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.000151

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary spastic paraplegia 11 Benign:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.9
Mutation Taster		=82/18	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

Other links and lift over

dbSNP: rs759504944; hg19: chr15-44890531;