Primary ciliary dyskinesia (PCD)
| Test Code | 8122 |
| Turnaround Time (TAT) | 4-5 weeks |
| Number of Genes | 21 |
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We offer family variant testing at no additional cost
for all blood relatives of patients who undergo full single gene sequencing or multigene panel testing* at Ambry Genetics and are found to have a pathogenic or likely pathogenic variant. No-cost testing of blood relatives must be completed within 90 days of the original Ambry report date.
Order Now*excludes Secondary Findings and SNP Array tests
Mutation Detection Rate
60-70% of patients with a clinical presentation of PCD and PCD-related disorders have a detectable mutation on this panel (clinical sensitivity).1 Ambry's PCDNext testing can detect >99.9% of described mutations in the included genes listed above, when present (analytic sensitivity).
Test Description
Our Primary Ciliary Dyskinesia panel includes next generation sequencing (NGS) and deletion/duplication analysis of the ARMC4, CCDC103, CCDC114, CCDC39, CCDC40, CFTR, DNAAF1, DNAAF2, DNAAF3, DNAAF5, DNAH5, DNAH11, DNAI1, DNAI2, LRRC6, OFD1, RPGR, RSPH4A, RSPH9, SPAG1, and TXNDC3 genes. Genomic deoxyribonucleic acid (gDNA) is isolated from the patient’s specimen using a standardized kit and quantified. Sequence enrichment of the targeted coding exons and adjacent intronic nucleotides is carried out by a bait-capture methodology using long biotinylated oligonucleotide probes, followed by polymerase chain reaction (PCR) and NGS. Additional Sanger sequencing is performed for any regions missing, or with insufficient read depth coverage for reliable heterozygous variant detection. Reportable small insertions and deletions, potentially homozygous variants, variants in regions complicated by pseudogene interference, and single nucleotide variant calls not satisfying 100x depth of coverage and 40% het ratio thresholds are verified by Sanger sequencing.16 This test targets detection of DNA sequence mutations in all coding domains, and well into the 5’ and 3’ ends of all the introns and untranslated regions. Gross deletion/duplication analysis is performed using a custom pipeline based on read-depth from NGS data and/or utilizing a targeted chromosomal microarray with confirmatory MLPA when applicable.
- Duriez B, et al. A common variant in combination with a nonsense mutation in a member of the thioredoxin family causes primary ciliary dyskinesia. Proc Natl Acad Sci USA. 2007 Feb 27;104(9):3336-41.
- Mu W, et al. Sanger confirmation is required to achieve optimal sensitivity and specificity in next-generation sequencing panel testing. J Mol Diagn. 2016. 18(6):923-932.