A Study of Pimitespib in Combination With Imatinib in Patients With GIST (CHAPTER-GIST-101)
NCT ID: NCT05245968
Last Updated: 2026-01-20
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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ACTIVE_NOT_RECRUITING
PHASE1
78 participants
INTERVENTIONAL
2021-12-01
2026-12-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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Dose Escalation Part
Pimitespib in combination with imatinib
Pimitespib
Pimitespib will be administered orally in 5 consecutive days followed by 2 days off treatment (QD 5) on an empty stomach at least 1 hour before or 2 hours after a meal. The doses in the Dose Escalation Part will be 80, 120 (starting dose), and 160 mg. The doses used in Arm A will be MTD or recommended dose (RD) based on the information, including the safety and the pharmacokinetics (PK) data in the Dose Escalation Part. In Expansion Part-B, pimitespib will be administered with the starting dose of 160 mg daily.
Imatinib
Imatinib will be administered orally, after a meal and large glass of water QD. The doses in Dose Escalation Part will be 400 mg or 300 mg (De-escalation). The doses used in Expansion Part-A will be MTD or RD based on information, including the safety and PK data in the Dose Escalation Part. In Expansion Part-B, imatinib will be administered post after pimitespib discontinuation with the starting dose of 400 mg daily.
Expansion Part-A
Pimitespib in combination with imatinib
Pimitespib
Pimitespib will be administered orally in 5 consecutive days followed by 2 days off treatment (QD 5) on an empty stomach at least 1 hour before or 2 hours after a meal. The doses in the Dose Escalation Part will be 80, 120 (starting dose), and 160 mg. The doses used in Arm A will be MTD or recommended dose (RD) based on the information, including the safety and the pharmacokinetics (PK) data in the Dose Escalation Part. In Expansion Part-B, pimitespib will be administered with the starting dose of 160 mg daily.
Imatinib
Imatinib will be administered orally, after a meal and large glass of water QD. The doses in Dose Escalation Part will be 400 mg or 300 mg (De-escalation). The doses used in Expansion Part-A will be MTD or RD based on information, including the safety and PK data in the Dose Escalation Part. In Expansion Part-B, imatinib will be administered post after pimitespib discontinuation with the starting dose of 400 mg daily.
Expansion Part-B
Pimitespib followed by imatinib
Pimitespib
Pimitespib will be administered orally in 5 consecutive days followed by 2 days off treatment (QD 5) on an empty stomach at least 1 hour before or 2 hours after a meal. The doses in the Dose Escalation Part will be 80, 120 (starting dose), and 160 mg. The doses used in Arm A will be MTD or recommended dose (RD) based on the information, including the safety and the pharmacokinetics (PK) data in the Dose Escalation Part. In Expansion Part-B, pimitespib will be administered with the starting dose of 160 mg daily.
Imatinib
Imatinib will be administered orally, after a meal and large glass of water QD. The doses in Dose Escalation Part will be 400 mg or 300 mg (De-escalation). The doses used in Expansion Part-A will be MTD or RD based on information, including the safety and PK data in the Dose Escalation Part. In Expansion Part-B, imatinib will be administered post after pimitespib discontinuation with the starting dose of 400 mg daily.
Expansion Part-C
Sunitinib
Sunitinib
Sunitinib will be administered orally QD with a starting dose of 50 mg, on a schedule of 4 weeks on treatment followed by 2 weeks off, and will be taken with or without a meal in Expansion Part-C.
Interventions
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Pimitespib
Pimitespib will be administered orally in 5 consecutive days followed by 2 days off treatment (QD 5) on an empty stomach at least 1 hour before or 2 hours after a meal. The doses in the Dose Escalation Part will be 80, 120 (starting dose), and 160 mg. The doses used in Arm A will be MTD or recommended dose (RD) based on the information, including the safety and the pharmacokinetics (PK) data in the Dose Escalation Part. In Expansion Part-B, pimitespib will be administered with the starting dose of 160 mg daily.
Imatinib
Imatinib will be administered orally, after a meal and large glass of water QD. The doses in Dose Escalation Part will be 400 mg or 300 mg (De-escalation). The doses used in Expansion Part-A will be MTD or RD based on information, including the safety and PK data in the Dose Escalation Part. In Expansion Part-B, imatinib will be administered post after pimitespib discontinuation with the starting dose of 400 mg daily.
Sunitinib
Sunitinib will be administered orally QD with a starting dose of 50 mg, on a schedule of 4 weeks on treatment followed by 2 weeks off, and will be taken with or without a meal in Expansion Part-C.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Histologically confirmed GIST
* Has radiographic progression based on RECIST 1.1 during or within 6 months of the last imatinib administration at enrollment. If surgery/radiotherapy has been performed, radiographic progression based on RECIST 1.1 with imatinib must have been observed after the last surgery /radiotherapy
* Has at least one measurable lesion based on the RECIST version 1.1, except lymph nodes (not dependent on size), which should be chosen as nontarget lesions;
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1
Exclusion Criteria
* Received treatment with any other line of therapy besides imatinib for advanced GIST
* History of total gastrectomy and/or whole resection of the small intestine
* A serious illness or medical condition
* Previous or concurrent cancer that is distinct in primary disease or histology from cancer that is being evaluated in this study. However, any previous cancer curatively treated \> 5 years before the enrollment can be eligible
* Pregnancy or lactation (including lactation interruption)
18 Years
ALL
No
Sponsors
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Taiho Pharmaceutical Co., Ltd.
INDUSTRY
Responsible Party
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Principal Investigators
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Taiho Pharmaceutical Co., Ltd.
Role: STUDY_DIRECTOR
Taiho Pharmaceutical Co., Ltd.
Locations
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Flinders Medical Center
Adelaide, , Australia
Alfred Health
Melbourne, , Australia
Beijing Cancer Hospital
Beijing, , China
Fudan University, Shanghai Cancer Center
Shanghai, , China
National Cancer Center Hospital East
Chiba, , Japan
Hokkaido University Hospital
Hokkaido, , Japan
Kumamoto University Hospital
Kumamoto, , Japan
Osaka University Hospital
Osaka, , Japan
National Cancer Center Hospital
Tokyo, , Japan
The Cancer Institute Hospital of JFCR
Tokyo, , Japan
National University Cancer Institute
Singapore, , Singapore
Kaohsiung Medical University Hospital
Kaohsiung City, , Taiwan
Linkou Chang Gung Memorial Hospital
Linkou District, , Taiwan
Taipei Veterans General Hospital
Taipei, , Taiwan
Countries
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Other Identifiers
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10058060
Identifier Type: -
Identifier Source: org_study_id
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