• Turnaround time:
    10–21 calendar days (14 days on average)
  • Preferred specimen:
    3mL whole blood in a purple-top tube
  • Alternate specimens:
    DNA or saliva/assisted saliva
  • Sample requirements
  • Request a sample kit



ATSV; C2orf20; HSN2C; MRD9; SPG30; UNC104

Associated disorders

The KIF1A gene is associated with autosomal recessive hereditary sensory neuropathy type 2C (HSN2C) (MedGen UID: 481798) and autosomal recessive and dominant spastic paraplegia 30 (SPG30) (MedGen UID: 372152). The KIF1A gene is also associated with autosomal dominant intellectual disability 9 (ID9) (MedGen UID: 481913).

Pathogenic variants in KIF1A are a rare cause of hereditary sensory and autonomic neuropathy.

The KIF1A gene encodes the protein kinesin family member 1A. Kinesins are motor proteins that transport organelles and other cargo throughout the cell. KIF1A is involved in transport of organelles along axonal microtubules.

Assay and technical information

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
KIF1A NM_004321.6; NM_001244008.1