• 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



CMT2O; DHC1; DHC1a; DNCH1; DNCL; DNECL; DYHC; Dnchc1; HL-3; SMALED1; p22

Associated disorders

The DYNC1H1 gene is associated with autosomal dominant Charcot-Marie-Tooth disease type 2O (CMT2O) (MedGen UID: 481850), lower extremity predominant spinal muscular atrophy 1 (SMALED1) (MedGen UID: 322470) and intellectual disability (MedGen UID: 482832).

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Invitae tests that include this gene:

Pathogenic variants in DYNC1H1 cause an estimated 5% of clinical cases of malformations of cortical development and an unknown percentage of CMT and spinal muscular atrophy.

The DYNC1H1 gene encodes a large subunit of the cytoplasmic dynein complex. Dynein, when bound to dynactin, forms a complex that is involved in protein transport, positioning of cell compartments, mobility of structures within the cell, and, in neurons, transport of synaptic vesicles.

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
DYNC1H1 NM_001376.4