Neoplasms

Digestive System Diseases

All Conditions

Skin and Connective Tissue Diseases

Rare Diseases

Gastrointestinal Stromal Tumors

Neoplasms, Connective Tissue

Neoplasms, Connective and Soft Tissue

Neoplasms by Histologic Type

Gastrointestinal Neoplasms

Digestive System Neoplasms

Gastrointestinal Diseases

Antineoplastic Agents

All Drugs and Chemicals

Amino Acids

Imatinib Mesylate

Tyrosine Kinase Inhibitors

Protein Kinase Inhibitors

Enzyme Inhibitors

Tyrosine

Participants were randomized 1:1 to receive imatinib mesylate 400 mg/day or 600 mg/day. Upon unsatisfactory treatment effect on the starting dose of 400 mg/day or 600 mg/day imatinib mesylate, in the opinion of the treating physician, a dose increase up to 600 mg/day or 800 mg/day, was allowed provided that the participant continued to benefit from the treatment and in the absence of safety concerns.

Imatinib mesylate

Novartis Pharmaceuticals

Novartis

In the core study, participants with unresectable or metastatic gastrointestinal stromal tumors expressing c-kit were treated with either 400 mg or 600 mg imatinib mesylate for 3 years. The 10 year extension study allowed participants, who successfully completed the core study, to continue study treatment with imatinib mesylate provided they still benefited from treatment and did not demonstrate safety concerns as per the investigator's opinion.

A Study of the Efficacy and Safety of Imatinib Mesylate in Patients With Unresectable or Metastatic Gastrointestinal Stromal Tumors Expressing C-kit Gene

Open, Randomized, Phase II Study of Glivec in Patients With Unresectable or Metastatic Gastrointestinal Stromal Tumors Expressing C-kit Plus 10 Year Extension Study

Best tumor response was based on the Southwestern Oncology Group (SWOG) criteria. Objective tumor response assessments were categorized according to the following criteria: complete response (CR), partial response (PR), no change or stable disease (SD), progression of disease (PD), unknown where the progression has not been documented and one or more measurable or evaluable sites have not been assessed (UNK), status after resection for progression (RP), status after resection for safety (RS), status after preventive resection (RPR), progressive after first resection (PDR) and not evaluable. Any tumor assessment after surgical resection for preventative reasons was treated like tumor assessments of UNK for calculation of best response. Tumor assessments with current objective status = RP, RS or PDR were treated like assessments with objective tumor status = PD n the calculation of best response.

Overall survival was analyzed as time to event for all participants. Participants who did not die were censored at the last date known alive, which is the last date of any study medication, laboratory sample, tumor assessment, adverse event end date or date of last contact.

Duration of response was analyzed as time to event for all participants whose best response was at least a PR. The onset of response was the first tumor assessment that was subsequently confirmed to constitute at least a partial best response. The end of response was the first tumor assessment noting PD.

Progression free survival was analyzed as a time to event for each participant. If a participant had no event, then the PFS was censored at the last tumor assessment.

Time to treatment failure was analyzed as time to event for all participants. Participants who had neither progressed, died nor discontinued from the trial for any reason other than the condition no longer required therapy were censored for analysis ate the time of their last tumor assessment.

Time to treatment failure was analyzed as time to event for all participants. Participants who had neither progressed, died nor discontinued from the trial for any reason other than the condition no longer required therapy were censored for analysis at the time of their last tumor assessment.

Time to response was analyzed as time to event for all participants. Participants who did not meet the definition of confirmed PR/CR were censored at the time of their last progression-free tumor assessment.

Time to progression was analyzed as time to event for all participants. Participants who had neither progressed, died nor discontinued from the trial for any reason other than the condition no longer required therapy were censored for analysis at the time of their last tumor assessment.

Imatinib Mesylate 400 mg

Imatinib Mesylate 600 mg

Total

Age, Continuous

Sex: Female, Male

No safety data was collected in the extension.

Study Director

Complete response

Partial response

Stable disease

Progressive disease

Not evaluable

Unknown

Treatment population: The treatment population included all randomized participants who received at least one dose of study medication.

Best Tumor Response (Core)

Treatment population: the treatment population included all participants who had at least one dose of study medication.

Best Tumor Response (Core + Extension)

Overall Survival (Core)

Overall Survival (Core + Extension)

Treatment population: the treatment population included all participants who had at least one dose of study medication and whose best response was at least a PR.

Duration of Response (Core)

Duration of Response (Core + Extension)

Progression Free Survival (PFS) (Core + Extension)

Treatment population: the treatment population included all participants who received at least one dose of study medication.

Spots Global Cancer Trial Database for A Study of the Efficacy and Safety of Imatinib Mesylate in Patients With Unresectable or Metastatic Gastrointestinal Stromal Tumors Expressing C-kit Gene

Trial Identification

Conditions

Interventions

Study Description

Keywords

Eligibility

Locations

Contact Details

Useful links and downloads for this trial