This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
[{'content': 'Which of the following is approved for the treatment of cystic fibrosis with G551D mutation? \nSelect and explain. \nA. Biostrophin, B. Peginesatide, C. Lumacaftor, D. Ivacaftor', 'role': 'user'}, {'content': "Answer: D \nExplanation: Biostrophin is a vehicle for gene therapy in Duchenne and Becker's muscular dystrophyPeginesatide is an erythropoietin analog for anemia of chronic kidney diseaseLumacaftor is a CFTR potentiator for cystic fibrosis with F508 mutationIvacaftor is a CFTR potentiator for cystic fibrosis with G551D mutation", 'role': 'assistant'}]