Pimitespib (trade name Jeselhy) is a drug for the treatment of gastrointestinal stromal tumors.

[1] It was discovered and developed by Taiho Pharmaceutical Co.[2] The mechanism of action of pimitespib involves inhibition of heat shock protein 90 (Hsp90).

[3] In June 2022, it received approval in Japan for gastrointestinal stromal tumors that have progressed after chemotherapy.

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