This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Marfan’s syndrome is due to defect of? \nSelect and explain. \nA. Elastin, B. Collagen, C. Fibrillin, D. Lamillin', 'role': 'user'}, {'content': "Answer: C \nExplanation: “Marfan's syndrome caused by a recurrent de novo missense mutation in the fibrillin-1 gene”\n√ Mutations in the fibrillin-1 gene cause Marfan's syndrome\n√ Mutations in the fibrillin-2 gene have been linked to Beals Syndrome.", 'role': 'assistant'}]