Complex sentence: Future studies should address the gene that causes the formation of peripheral chondrosarcoma and what causes chondrocytes that are functional with EXT1 and EXT2 within the osteochondroma more susceptible to mutations leading to malignancy.
Split into simpler sentences: Future studies should address the contributing gene that causes the formation of peripheral chondrosarcoma. Also, what causes chondrocytes functional with "EXT1" and "EXT2" within the osteochondroma more susceptible to mutations leading to malignancy.