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High-speed Video Microscopy Analysis for First-line Diagnosis of Primary Ciliary Dyskinesia
Published on: January 19, 2022
Novel Gene Variants Associated with Primary Ciliary Dyskinesia
Durkadin Demir Eksi1,2, Elanur Yilmaz3,4, A Erdem Basaran5
1Department of Medical Biology and Genetics, School of Medicine, Akdeniz University, Antalya, 07070, Turkey. durkadin.eksi@alanya.edu.tr.
Genetic testing identified disease-causing variants in eight genes in 52.4% of Turkish Caucasian primary ciliary dyskinesia (PCD) cases. Novel variations were found, highlighting the need for advanced genetic diagnostics in PCD.
Area of Science:
- Genetics
- Rare Diseases
- Molecular Biology
Background:
- Primary ciliary dyskinesia (PCD) is a rare genetic disorder affecting cilia function.
- Understanding the genetic landscape of PCD in diverse populations is crucial for diagnosis.
Purpose of the Study:
- To characterize the demographic, clinical, and genetic profile of Turkish Caucasian individuals with PCD.
- To identify disease-causing genetic variations in a cohort of Turkish Caucasian PCD patients.
Main Methods:
- Targeted next-generation sequencing (t-NGS) of 46 nuclear genes was performed on 21 unrelated PCD cases.
- Sanger sequencing was used to confirm identified variations.
- Genotype-phenotype correlations were analyzed.
Main Results:
- Genetic variations were identified in eight genes (CCDC39, CCDC40, CCDC151, DNAAF2, DNAAF4, DNAH11, HYDIN, RSPH4A) in 52.4% (11/21) of patients.
- CCDC151, DNAH11, and DNAAF2 were the most frequently mutated genes (18% each).
- Several novel variations were discovered, and significant phenotypic heterogeneity was observed, even among patients with identical mutations.
Conclusions:
- The targeted NGS panel is effective for identifying known and novel PCD-related variants.
- This approach aids in the rapid and accurate molecular diagnosis of ciliary diseases.
- The findings underscore the genetic diversity and phenotypic variability of PCD.
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