<prompt> Mutation seen in Marfan syndrome:Fibrillin-1 geneFGFR-3 geneCOL1A1Fibrillin-2  <response>: Marfan Syndrome: Fibrillin 1 gene defect FGFR3- is seen in achondroplasia COL1A1- osteogenesis imperfecta Fibrillin2- Congenital contractural arachnodactyly CCA -phenotypically similar to Marfan syndrome 