• 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 CC2D2A gene is associated with autosomal recessive ciliopathies including Joubert syndrome (MedGen UID: 382940), Joubert syndrome with congenital hepatic fibrosis (COACH syndrome; MedGen UID: 387879), and Meckel-Gruber syndrome (MedGen UID: 382942).

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Invitae tests that include this gene:

Primary cilia sense the extracellular environment and transmit signals into the cell for proper organ development adn embryonic patterning. These cilia consist of a basal body, transition zone, and axoneme composed of nine peripheral microtubule doublets. Disruption of cilia function can lead to a variety of diseases associated with brain, kidney, lung, eye, digital and/or facial anomalies. The CC2D2A gene encodes a transition zone protein that establishes a “ciliary gate” to control protein entry into the cilia, and mutations in this gene lead to defects in ciliogenesis (PMID: 21422230, 24947469, 23352055).

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 in the transcript listed below. In addition, analysis covers the select non-coding variants specifically defined in the table below. Any variants that fall outside these regions are not analyzed. Any specific limitations in the analysis of these genes are also listed in the table below.

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
CC2D2A NM_001080522.2