• 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




Associated disorders

The CAV3 gene is associated with autosomal dominant long QT syndrome type 9 (LQT9) (MedGen UID: 395635) and hypertrophic cardiomyopathy (HCM) (MedGen UID: 501195). It is also associated with a spectrum of neuromuscular conditions including autosomal dominant hyperCKemia (MedGen UID: 69128) and distal myopathy (MedGen UID: 833809), and autosomal dominant and recessive limb-girdle muscular dystrophy type 1C (LGMD1C) (MedGen UID: 371358) and rippling muscle disease (MedGen UID: 342944), collectively known as the caveolinopathies (MedGen UID: 433151).

Pathogenic CAV3 variants are a rare cause of LQTS and are associated with an unknown percentage of clinical cases of HCM. CAV3 pathogenic variants are also a rare cause of LGMD and distal myopathy.

The CAV3 gene encodes the protein caveolin-3. Caveolin-3 is expressed in muscle tissue where it is involved in the maintenance of cell membrane integrity and the regulation of signaling pathways.

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
CAV3 NM_033337.2