What is Jeselhy used for?

Jeselhy is indicated for Gastrointestinal stromal tumor.

Jeselhy is developed by Taiho Pharmaceutical Co., Ltd.

What development phase is Jeselhy in?

Jeselhy is FDA-approved (marketed).

What is the generic name of Jeselhy?

Pimitespib is the generic (nonproprietary) name of Jeselhy.

Last reviewed 2026-04-20 · How we verify

Jeselhy (Pimitespib)

Taiho Pharmaceutical Co., Ltd · FDA-approved active Small molecule Quality 17/100

At a glance

Generic name	Pimitespib
Also known as	TAS-116
Sponsor	Taiho Pharmaceutical Co., Ltd
Target	Heat shock protein HSP 90-beta
Modality	Small molecule
Therapeutic area	Oncology
Phase	FDA-approved

Approved indications

Gastrointestinal stromal tumor

Common side effects

No common side effects on file.

Key clinical trials

A Study of Pimitespib in Combination With Imatinib in Patients With GIST (CHAPTER-GIST-101) (PHASE1)

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

Source	Used for
ClinicalTrials.gov	Trial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Jeselhy CI brief — competitive landscape report
Jeselhy updates RSS · CI watch RSS
Taiho Pharmaceutical Co., Ltd portfolio CI