RT Journal Article SR Electronic(1) A1 AbdulWahab, Atqah A1 AlNaimi, Amal A1 Habra, Basel A1 Janahi, IbrahimYR 2021 T1 First report of the cystic fibrosis transmembrane conductance regulator mutation c.1521_1523delCTT (p. Phe508del) in two Qatari patients with cystic fibrosis JF Qatar Medical Journal, VO 2021 IS 2 OP SP 24 DO https://doi.org/10.5339/qmj.2021.24 PB Hamad bin Khalifa University Press (HBKU Press), SN 2227-0426, AB We report two cases of Qatari children with cystic fibrosis (CF) from different families presenting the homozygous CFTR 1521_1523delCTT (p. Phe508del) mutation with classic CF phenotypes. This gene mutation is considered the second CF mutation identified in Qatar. Herein, we review the frequency and distribution of this mutation in Arab countries., UL https://www.qscience.com/content/journals/10.5339/qmj.2021.24