15-44660621-GA-G

Position:

• chr15-44660621-GA-G

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_Strong BS1 BS2

The ENST00000261866.12(SPG11):​c.258-6del variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00114 in 1,613,764 control chromosomes in the GnomAD database, including 26 homozygotes. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0059 (17 hom., cov: 32)
  • Exomes 𝑓: 0.00065 (9 hom.)
• Consequence: SPG11 ENST00000261866.12 splice_region, splice_polypyrimidine_tract, intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: -0.251

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 Benign. Variant got -16 ACMG points.

• BP6: Variant 15-44660621-GA-G is Benign according to our data. Variant chr15-44660621-GA-G is described in ClinVar as [Likely_benign]. Clinvar id is 445763.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr15-44660621-GA-G is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0059 (897/152126) while in subpopulation AFR AF= 0.0206 (854/41522). AF 95% confidence interval is 0.0194. There are 17 homozygotes in gnomad4. There are 415 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 17 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPG11	NM_025137.4	c.258-6del		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000261866.12	NP_079413.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPG11	ENST00000261866.12	c.258-6del		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_025137.4	ENSP00000261866

Frequencies

GnomAD3 genomes AF: 0.00591 AC: 898 AN: 152008 Hom.: 17 Cov.: 32

Gnomad AFR AF: 0.0207

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00157

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00526

GnomAD3 exomes AF: 0.00149 AC: 374 AN: 250636 Hom.: 4 AF XY: 0.00104 AC XY: 141 AN XY: 135774

Gnomad AFR exome AF: 0.0216

Gnomad AMR exome AF: 0.000549

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.000163

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000353

Gnomad OTH exome AF: 0.000657

GnomAD4 exome AF: 0.000649 AC: 948 AN: 1461638 Hom.: 9 Cov.: 31 AF XY: 0.000561 AC XY: 408 AN XY: 727128

Gnomad4 AFR exome AF: 0.0230

Gnomad4 AMR exome AF: 0.000671

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.000209

Gnomad4 FIN exome AF: 0.0000749

Gnomad4 NFE exome AF: 0.0000342

Gnomad4 OTH exome AF: 0.00116

GnomAD4 genome AF: 0.00590 AC: 897 AN: 152126 Hom.: 17 Cov.: 32 AF XY: 0.00558 AC XY: 415 AN XY: 74360

Gnomad4 AFR AF: 0.0206

Gnomad4 AMR AF: 0.00157

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00521

Alfa AF: 0.00326 Hom.: 0

Bravo AF: 0.00701

EpiCase AF: 0.000109

EpiControl AF: 0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary spastic paraplegia 11 Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	-	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 06, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Hereditary spastic paraplegia Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Apr 01, 2020

- -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

May 03, 2017

- -

Amyotrophic lateral sclerosis type 5 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

-

- -

Charcot-Marie-Tooth disease axonal type 2X Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

-

- -

Computational scores

Source: dbNSFP v4.3

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: rs373234269; hg19: chr15-44952819;