This study focuses on conventional chondrosarcoma, a type of bone cancer that has spread locally or to other parts of the body (locally advanced or metastatic) and contains a specific genetic change called an IDH1 mutation. The study will test a medication called ivosidenib (also known as AG-120/S95031), which is given as film-coated tablets taken by mouth.
The purpose of this research is to determine how well ivosidenib works in treating patients with Grade 1 and Grade 2 chondrosarcoma. The study will compare ivosidenib to a placebo in patients who have either not received any previous systemic treatment or have had one prior treatment for their cancer. Participants will be randomly assigned to receive either ivosidenib tablets or matching placebo tablets.
During the study, participants will take the study medication daily. The treatment may continue for up to 24 months. Throughout the study, doctors will monitor the participants’ health and perform regular assessments to check how their cancer responds to the treatment. The study will measure how long participants live without their cancer getting worse, along with other factors such as overall survival and quality of life.



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