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  • 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
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RPGR

Alias

COD1; CORDX1; CRD; PCDX; RP15; RP3; XLRP3; orf15

Associated disorders

The RPGR gene is associated with complex X-linked retinitis pigmentosa and primary ciliary dyskinesia (PMID: 16055928).

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RPGR

Order this gene as a single gene test.

RPGR: Only the transcript associated with X-linked primary ciliary dyskinesia (XL PCD) is analyzed; therefore, this test is not appropriate for X-linked retinitis pigmentosa (XLRP) testing.


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Invitae tests that include this gene:

The percentage of PCD attributed to pathogenic variants identified in RPGR is unknown.

Ciliary movement protects the lungs, sinuses and ear canals from recurrent infections by clearing mucus, dirt and bacteria out of the respiratory tract. Motile cilia consist of nine peripheral microtubule doublets encircling two central microtubules. Inner and outer dynein arms attached at regular intervals along the peripheral microtubules and radial spokes linking the peripheral and central microtubules act as molecular motors to generate planar movement. The RPGR gene encodes a protein involved in microtubule organization and protein transport along the cilia. Mutations in this gene lead to dysfunctional motile and sensory cilia with numerous structural defects (PMID: 25826585).

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
RPGR* NM_000328.2


*RPGR: Only the transcript associated with X-linked primary ciliary dyskinesia (XL PCD) is analyzed; therefore, this test is not appropriate for X-linked retinitis pigmentosa (XLRP) testing.