The SPG20 gene is associated with autosomal recessive hereditary spastic paraplegia 20 (SPG20), also known as Troyer syndrome (MedGen UID: 97950).
Order this gene as a single gene test.
Invitae tests that include this gene:
The percentage of autosomal recessive HSP caused by pathogenic variants in SPG20 is unknown. SPG20, or Troyer syndrome, is prevelant among the Old Order Amish.
The SPG20 gene encodes a protein named spartin, which is expressed in the nervous system and has been reported to interact with strumpellin, the protein product of another HSP gene, KIAA0196.
Invitae is a College of American Pathologists (CAP)-accredited and Clinical Laboratory Improvement Amendments (CLIA)-certified clinical diagnostic laboratory performing full-gene sequencing and deletion/duplication analysis using next-generation sequencing technology (NGS).
Our sequence analysis covers clinically important regions of each gene, including coding exons, +/- 10 base pairs of adjacent intronic sequence, and select noncoding variants. Our assay provides a Q30 quality-adjusted mean coverage depth of 350x (50x minimum, or supplemented with additional analysis). Variants classified as pathogenic or likely pathogenic are confirmed with orthogonal methods, except individual variants that have high quality scores and previously validated in at least ten unrelated samples.
Our analysis detects most intragenic deletions and duplications at single exon resolution. However, in rare situations, single-exon copy number events may not be analyzed due to inherent sequence properties or isolated reduction in data quality. If you are requesting the detection of a specific single-exon copy number variation, please contact Client Services before placing your order.
|Gene||Transcript reference||Sequencing analysis||Deletion/Duplication analysis|