Turkish Thoracic Journal
Original Article

Genetic and Clinical Demographics of Adult Cystic Fibrosis Patients in a Middle Eastern Population


Cleveland Clinic Abu Dhabi, Respiratory and Allergy Institute, Abu Dhabi, United Arab Emirates


College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia

Turk Thorac J 2021; 22: 279-283
DOI: 10.5152/TurkThoracJ.2021.20121
Read: 410 Downloads: 95 Published: 09 July 2021

OBJECTIVE: Cystic fibrosis (CF) is the commonest life-limiting inherited illness in the Caucasian population but is uncommon in the Middle East, and so the genotypes and clinical course of disease in this population is not well known.

MATERIAL AND METHODS: In this retrospective observational study, we collected and reviewed the data on CF mutations, body mass index (BMI), lung function, microbiology, and the demographics in adult CF patients in the United Arab Emirates (UAE).

Results: Data was reviewed for 39 adult CF patients. The median age of adult CF patients presenting to our clinic was 25 years (interquartile range (IQR) 22-31), the median BMI was 19 (IQR 17-22), and the median percentage predicted forced expiratory volume at 1 second (FEV1) was 49.5% (IQR 38.5-62.5). S549R was the commonest mutation (n = 11, 28%) followed by ∆F508 (n = 9, 23%). Only 5 (13%) out of 39 patients were heterozygote for CF mutations which reflects the high level of consanguinity in the region. Twelve (30%) patients were diagnosed after the age of 16, and in total, 19 (48%) were diagnosed after the age of 10. Thirty-two (82%) of patients are pseudomonas colonized, and 31% had 3 or more exacerbations in the last 12 months.

Conclusion: The CF mutation patterns in the UAE are different from western populations with low ∆F508 prevalence, with the presence of rare mutations more specific to this region and a high rate of homozygosity. Late diagnosis, high pseudomonas colonization rate, and exacerbation frequency remain a problem in this region and lead to poor long-term outcomes.

Cite this article as: Shafiq I, Shabeer S, Haider Uzbeck M, Zoumot Z, Abuzakouk M, Saeed Wahla A. Genetic and clinical demographics of adult cystic fibrosis patients in a middle eastern population. Turk Thorac J. 2021; 22(4): 279-283.224

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