BACKGROUND: Several treatment approaches in cystic fibrosis (CF) aim to correct CF transmembrane conductance regulator (CFTR) function; the efficacy of each approach is dependent on the mutation(s) present. A need remains for more effective treatments to correct functional deficits caused by the F508del mutation. METHODS: Two placebo-controlled, phase 2a studies evaluated GLPG2222, given orally once daily for 29 days, in subjects homozygous for F508del (FLAMINGO) or heterozygous for F508del and a gating mutation, receiving ivacaftor (ALBATROSS). The primary objective of both studies was to assess safety and tolerability. Secondary objectives included assessment of pharmacokinetics, and of the effect of GLPG2222 on sweat chloride concentrations, pulmonary function and respiratory symptoms. RESULTS: Fifty-nine and 37 subjects were enrolled into FLAMINGO and ALBATROSS, respectively. Treatment-related treatment-emergent adverse events (TEAEs) were reported by 29.2% (14/48) of subjects in FLAMINGO and 40.0% (12/30) in ALBATROSS; most were mild to moderate in severity and comprised primarily respiratory, gastrointestinal, and infection events. There were no deaths or discontinuations due to TEAEs. Dose-dependent decreases in sweat chloride concentrations were seen in GLPG2222-treated subjects (maximum decrease in FLAMINGO: -17.6 mmol/L [GLPG2222 200 mg], p < 0.0001; ALBATROSS: -7.4 mmol/L [GLPG2222 300 mg], p < 0.05). No significant effects on pulmonary function or respiratory symptoms were reported. Plasma GLPG2222 concentrations in CF subjects were consistent with previous studies in healthy volunteers and CF subjects. CONCLUSIONS: GLPG2222 was well tolerated. Sweat chloride reductions support on-target enhancement of CFTR activity in subjects with F508del mutation(s). Significant improvements in clinical endpoints were not demonstrated. Observed safety results support further evaluation of GLPG2222, including in combination with other CFTR modulators. FUNDING: Galapagos NV. Clinical trial registration numbers FLAMINGO, NCT03119649; ALBATROSS, NCT03045523.

• MeSH
• aktivátory chloridových kanálů aplikace a dávkování   škodlivé účinky   farmakokinetika   MeSH
• aminofenoly * aplikace a dávkování   škodlivé účinky   MeSH
• aplikace orální MeSH
• benzoáty * aplikace a dávkování   škodlivé účinky   farmakokinetika   MeSH
• benzopyrany * aplikace a dávkování   škodlivé účinky   farmakokinetika   MeSH
• biologická dostupnost MeSH
• chinolony * aplikace a dávkování   škodlivé účinky   MeSH
• cystická fibróza * diagnóza   farmakoterapie   genetika   MeSH
• dospělí MeSH
• dvojitá slepá metoda MeSH
• kombinovaná farmakoterapie metody   MeSH
• lidé MeSH
• monitorování léčiv MeSH
• mutace MeSH
• pot * chemie   účinky léků   MeSH
• protein CFTR genetika   MeSH
• respirační funkční testy metody   MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• klinické zkoušky, fáze II MeSH
• multicentrická studie MeSH
• práce podpořená grantem MeSH
• randomizované kontrolované studie MeSH