Study Evaluating IPI-504 in Patients With Gastrointestinal Stromal Tumors (GIST) Following Failure of at Least Imatinib and Sunitinib

NCT ID: NCT00688766

Last Updated: 2012-12-11

Basic Information

• Recruitment Status: TERMINATED
• Clinical Phase: PHASE3
• Total Enrollment: 47 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-08-31
• Study Completion Date: 2009-05-31

Brief Summary

IPI-504-06 is a Phase 3, randomized, double-blind, placebo-controlled, multi-center study to evaluate the efficacy and safety of IPI-504 as compared to placebo in patients with metastatic and/or unresectable GIST following failure of at least imatinib and sunitinib.

Approximately 195 patients will be randomized using a 2:1 ratio to receive either IPI-504 (N=130) or placebo (N=65). Upon unblinding, patients receiving either IPI-504 or placebo may receive IPI-504 in the open-label portion of the study if defined inclusion criteria are met.

Early and frequent imaging timepoints (Weeks 2, 5, 8, 14 and every 6 weeks thereafter) are incorporated into this study to capture progression events and limit patient exposure to ineffective agents.

Conditions

Gastrointestinal Stromal Tumors

Keywords

GIST; Metastatic and/or Unresectable Gastrointestinal Stromal

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

IPI-504

retaspimycin hydrochloride (IPI-504) plus best supportive care

Group Type: EXPERIMENTAL

retaspimycin hydrochloride (IPI-504)

Intervention Type: DRUG

IPI-504 is a novel small molecule inhibitor of heat shock protein 90 (Hsp90). Patients will receive 400 mg/m2 of IPI-504 as a 30-minute IV infusion twice weekly for 2 weeks followed by 1 week off.

Best supportive care

Intervention Type: OTHER

Best supportive care will be according to institutional standard, but will not include administration of systemic cancer-specific therapies including chemotherapies, biologic therapies, investigational therapies, TKIs (e.g., imatinib, sunitinib, nilotinib, dasatinib), or local therapies such as surgery, radiotherapy, or lesion ablative therapies.

Placebo

Placebo plus best supportive care

Group Type: PLACEBO_COMPARATOR

placebo

Intervention Type: DRUG

Patients will receive a 30-minute IV infusion twice weekly for 2 weeks followed by 1 week off.

Best supportive care

Intervention Type: OTHER

Best supportive care will be according to institutional standard, but will not include administration of systemic cancer-specific therapies including chemotherapies, biologic therapies, investigational therapies, TKIs (e.g., imatinib, sunitinib, nilotinib, dasatinib), or local therapies such as surgery, radiotherapy, or lesion ablative therapies.

Interventions

retaspimycin hydrochloride (IPI-504)

IPI-504 is a novel small molecule inhibitor of heat shock protein 90 (Hsp90). Patients will receive 400 mg/m2 of IPI-504 as a 30-minute IV infusion twice weekly for 2 weeks followed by 1 week off.

Intervention Type: DRUG

placebo

Patients will receive a 30-minute IV infusion twice weekly for 2 weeks followed by 1 week off.

Intervention Type: DRUG

Best supportive care

Best supportive care will be according to institutional standard, but will not include administration of systemic cancer-specific therapies including chemotherapies, biologic therapies, investigational therapies, TKIs (e.g., imatinib, sunitinib, nilotinib, dasatinib), or local therapies such as surgery, radiotherapy, or lesion ablative therapies.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• At least 18 years of age at the time of study randomization.
• Histologically confirmed metastatic and/or unresectable GIST.
• Measurable disease on CT or MRI as defined by RECIST.
• Documented radiographic progression or intolerance to imatinib and sunitinib.
• Clinical failure of the most recent prior therapy for GIST. Note: There is no limit to the number of prior therapies a patient may have received.
• Eastern Cooperative Oncology Group (ECOG) performance status: 0 or 1.
• Hemoglobin ≥ 8.0 g/dL (80 g/L).
• Absolute Neutrophil Count ≥ 1500/µL (1.5 x 109/L).
• Platelets ≥ 100,000 /µL (100 x 109/L).
• ALT and AST ≤ 2.5 x upper limit of normal (ULN), or ≤ 5.0 x ULN if considered secondary to liver metastases.
• Alkaline phosphatase ≤ 2.5 x ULN, or ≤ 5.0 x ULN if considered secondary to liver metastases.
• Serum bilirubin ≤ 1.5 x ULN.
• PT and PTT ≤ 1.5 x ULN unless the patient is receiving warfarin. If the patient is receiving warfarin, the INR must be within therapeutic range.
• Serum creatinine ≤ 1.5 x ULN.

Exclusion Criteria

• Previous administration of other known heat shock protein 90 (Hsp90) inhibitors.
• Surgery, radiotherapy, or lesion ablative procedure to the only area of measurable disease.
• Initiation or discontinuation of concurrent medication that is a potent CYP3A inhibitor less than 2 weeks prior to administration of IPI-504 or placebo.
• History of any of the following within the last 6 months: cardiac disease such as acute coronary syndrome or unstable angina, symptomatic congestive heart failure, uncontrolled hypertension, cirrhotic liver disease, cerebrovascular accident, or any other significant co-morbid condition or disease which, in the judgment of the investigator, would place the patient at undue risk or interfere with the study.
• Grade 3 or 4 hemorrhagic event within the last 6 months.
• Known human immunodeficiency virus positivity.
• Sinus bradycardia (resting heart rate < 50 bpm) secondary to intrinsic conduction system disease.
• QTcF ≥ 470 milliseconds, or previous history of clinically significant QTc prolongation while taking other medications.
• History of prior malignancies within the past 3 years other than non-melanomatous skin cancers that have been controlled, prostate cancer that has been treated and has not recurred, non-muscle-invasive bladder cancer, and carcinoma in situ of the cervix.
• Active or recent history (within 3 months) of keratitis or keratoconjunctivitis confirmed by ophthalmology or optometry exam.
• Presence of Left Bundle Branch Block, Right Bundle Branch Block plus left anterior hemiblock, bifascicular block, or 3rd degree heart block. This does not include patients with a history of these events with adequate control by pacemaker.
• Known CNS metastases.
• Women who are pregnant or lactating.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

MedImmune LLC

INDUSTRY

Sponsor Role: collaborator

AstraZeneca

INDUSTRY

Sponsor Role: collaborator

Infinity Pharmaceuticals, Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Pedro Santabarbara, M.D.

Role: STUDY_DIRECTOR

Infinity Pharmaceuticals, Inc.

George Demetri, MD

Role: PRINCIPAL_INVESTIGATOR

Dana-Farber Cancer Institute

Countries

Australia; Belgium; France; Germany; South Korea; Sweden; United States

Related Links

http://www.gistsupport.org

Gist Support International - Patient Advocacy Group

http://www.liferaftgroup.org

The Liferaft Group - Patient Advocacy Group

Other Identifiers

IPI-504-06

Identifier Type: -

Identifier Source: org_study_id