NCT00276302

Safety Study of IPI-504 in Patients With Gastrointestinal Stromal Tumors (GIST) or Soft Tissue Sarcomas (STS)

A Phase 1, Safety Assessment and Pharmacokinetic Study of IPI-504 in Patients With Either Metastatic and/or Unresectable Gastrointestinal Stromal Tumors (GIST) or Advanced or Metastatic Soft Tissue Sarcomas (STS)

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 63 (actual)
• Sponsor: Infinity Pharmaceuticals, Inc. · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The primary objectives of the study are: * Determine the safety and maximum tolerated dose (MTD) of IPI-504 in GIST and STS patients who have failed prior therapies * Recommend a dose for subsequent studies of IPI-504

Detailed description

IPI-504 is a novel, water-soluble analog of 17-AAG and a potent inhibitor of Hsp90. Hsp90's role in the cell is to control the proper folding, function, and viability of various "client" proteins. Many of these client proteins (such as AKT, Her-2, Bcr-Abl, PDGFR-α, and c-Kit) are oncoproteins or important cell signaling proteins. In patients with GIST, mutations in the tyrosine kinase receptor Kit play a critical role in the pathogenesis of this disease. Inhibition of Kit signaling with the tyrosine kinase inhibitor Imatinib (IM) is a very effective treatment for GIST patients. However, new mutations arise in Kit conferring resistance to IM treatment which results in disease progression. Kit is a client protein of Hsp90 and is sensitive to IPI-504. In Soft Tissue Sarcomas, there may be genetic abnormalities that lead to the expression of certain proteins that drive the growth of cancer. These cancer-driving proteins may be stimulated by HSP90. This provides a scientific rationale for Phase 1 clinical testing of IPI-504 in patients with advanced GIST and STS who have failed prior therapies.

Conditions

• Gastrointestinal Stromal Tumors
• Soft Tissue Sarcomas

Interventions

Type	Name	Description
DRUG	IPI-504	IV administration of IPI-504 for 21-day cycles. Two different schedules of treatment will be tested. On Schedule A, doses occur on Days 1, 4, 8, and 11 followed by 10 days with no study drug administration. On Schedule B, doses occur on Days 1, 4, 8, 11, 15, and 18, or twice weekly for 3 weeks continuously. For both Schedule A and B doses will be administered ≥ 72 hours apart.

Timeline

• Start date: 2005-12-01
• Primary completion: 2010-11-01
• Completion: 2010-11-01
• First posted: 2006-01-13
• Last updated: 2011-01-06

Locations

5 sites across 2 countries: United States, Canada