TY - JOUR
T1 - Analyses of 1236 genotyped primary ciliary dyskinesia individuals identify regional clusters of distinct DNA variants and significant genotype–phenotype correlations
AU - Raidt, Johanna
AU - Riepenhausen, Sarah
AU - Pennekamp, Petra
AU - Olbrich, Heike
AU - Amirav, Israel
AU - Athanazio, Rodrigo A.
AU - Aviram, Micha
AU - Balinotti, Juan E.
AU - Bar-On, Ophir
AU - Bode, Sebastian F.N.
AU - Boon, Mieke
AU - Borrelli, Melissa
AU - Carr, Siobhan B.
AU - Crowley, Suzanne
AU - Dehlink, Eleonora
AU - Diepenhorst, Sandra
AU - Durdik, Peter
AU - Dworniczak, Bernd
AU - Emiralioğlu, Nagehan
AU - Erdem, Ela
AU - Fonnesu, Rossella
AU - Gracci, Serena
AU - Große-Onnebrink, Jörg
AU - Gwozdziewicz, Karolina
AU - Haarman, Eric G.
AU - Hansen, Christine R.
AU - Hogg, Claire
AU - Holgersen, Mathias G.
AU - Körner, Eitan Kerem Robert W.
AU - Kötz, Karsten
AU - Kouis, Panayiotis
AU - Loebinger, Michael R.
AU - Lorent, Natalie
AU - Lucas, Jane S.
AU - Maj, Debora
AU - Mall, Marcus A.
AU - Marthin, June K.
AU - Martinu, Vendula
AU - Mazurek, Henryk
AU - Mitchison, Hannah M.
AU - Nöthe-Menchen, Tabea
AU - Özçelik, Ugur
AU - Pifferi, Massimo
AU - Pogorzelski, Andrzej
AU - Ringshausen, Felix C.
AU - Roehmel, Jobst F.
AU - Rovira-Amigo, Sandra
AU - Rumman, Nisreen
AU - Schlegtendal, Anne
AU - Shoemark, Amelia
AU - Kennelly, Synne Sperstad
AU - Staar, Ben O.
AU - Sutharsan, Sivagurunathan
AU - Thomas, Simon
AU - Ullmann, Nicola
AU - Varghese, Julian
AU - von Hardenberg, Sandra
AU - Walker, Woolf T.
AU - Wetzke, Martin
AU - Witt, Michal
AU - Yiallouros, Panayiotis
AU - Zschocke, Anna
AU - Ziętkiewicz, Ewa
AU - Nielsen, Kim G.
AU - Omran, Heymut
N1 - Publisher Copyright:
© 2024 European Respiratory Society. All rights reserved.
PY - 2024
Y1 - 2024
N2 - Background Primary ciliary dyskinesia (PCD) represents a group of rare hereditary disorders characterised by deficient ciliary airway clearance that can be associated with laterality defects. We aimed to describe the underlying gene defects, geographical differences in genotypes and their relationship to diagnostic findings and clinical phenotypes. Methods Genetic variants and clinical findings (age, sex, body mass index, laterality defects, forced expiratory volume in 1 s (FEV1)) were collected from 19 countries using the European Reference Network’s ERN-LUNG international PCD Registry. Genetic data were evaluated according to American College of Medical Genetics and Genomics guidelines. We assessed regional distribution of implicated genes and genetic variants as well as genotype correlations with laterality defects and FEV1. Results The study included 1236 individuals carrying 908 distinct pathogenic DNA variants in 46 PCD genes. We found considerable variation in the distribution of PCD genotypes across countries due to the presence of distinct founder variants. The prevalence of PCD genotypes associated with pathognomonic ultrastructural defects (mean 72%, range 47–100%) and laterality defects (mean 42%, range 28–69%) varied widely among countries. The prevalence of laterality defects was significantly lower in PCD individuals without pathognomonic ciliary ultrastructure defects (18%). The PCD cohort had a reduced median FEV1 z-score (−1.66). Median FEV1 z-scores were significantly lower in CCNO (−3.26), CCDC39 (−2.49) and CCDC40 (−2.96) variant groups, while the FEV1 z-score reductions were significantly milder in DNAH11 (−0.83) and ODAD1 (−0.85) variant groups compared to the whole PCD cohort. Conclusion This unprecedented multinational dataset of DNA variants and information on their distribution across countries facilitates interpretation of the genetic epidemiology of PCD and indicates that the genetic variant can predict diagnostic and phenotypic features such as the course of lung function.
AB - Background Primary ciliary dyskinesia (PCD) represents a group of rare hereditary disorders characterised by deficient ciliary airway clearance that can be associated with laterality defects. We aimed to describe the underlying gene defects, geographical differences in genotypes and their relationship to diagnostic findings and clinical phenotypes. Methods Genetic variants and clinical findings (age, sex, body mass index, laterality defects, forced expiratory volume in 1 s (FEV1)) were collected from 19 countries using the European Reference Network’s ERN-LUNG international PCD Registry. Genetic data were evaluated according to American College of Medical Genetics and Genomics guidelines. We assessed regional distribution of implicated genes and genetic variants as well as genotype correlations with laterality defects and FEV1. Results The study included 1236 individuals carrying 908 distinct pathogenic DNA variants in 46 PCD genes. We found considerable variation in the distribution of PCD genotypes across countries due to the presence of distinct founder variants. The prevalence of PCD genotypes associated with pathognomonic ultrastructural defects (mean 72%, range 47–100%) and laterality defects (mean 42%, range 28–69%) varied widely among countries. The prevalence of laterality defects was significantly lower in PCD individuals without pathognomonic ciliary ultrastructure defects (18%). The PCD cohort had a reduced median FEV1 z-score (−1.66). Median FEV1 z-scores were significantly lower in CCNO (−3.26), CCDC39 (−2.49) and CCDC40 (−2.96) variant groups, while the FEV1 z-score reductions were significantly milder in DNAH11 (−0.83) and ODAD1 (−0.85) variant groups compared to the whole PCD cohort. Conclusion This unprecedented multinational dataset of DNA variants and information on their distribution across countries facilitates interpretation of the genetic epidemiology of PCD and indicates that the genetic variant can predict diagnostic and phenotypic features such as the course of lung function.
UR - http://www.scopus.com/inward/record.url?scp=85194899923&partnerID=8YFLogxK
U2 - 10.1183/13993003.01769-2023
DO - 10.1183/13993003.01769-2023
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C2 - 38871375
AN - SCOPUS:85194899923
SN - 0903-1936
VL - 64
JO - European Respiratory Journal
JF - European Respiratory Journal
IS - 2
M1 - 2301769
ER -