Conditions: Stomach Neoplasms
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 275
Healthy volunteers: no

Brief summary:
This phase II study addressed the use of docetaxel in combination with oxaliplatin with or without 5-FU or capecitabine in metastatic or locally recurrent gastric cancer previously untreated with chemotherapy for advanced disease. Prior to this study a pilot phase I (part I) determined the optimal dose by assessing the safety and tolerability of 2 dose levels in each arm. The optimal dose was administered in the Part II study. Participants who received the optimal dose in each treatment arm in Part I were included in the Part II analysis population.

Primary objective:

* To assess the time to progression (TTP) of Docetaxel in combination with Oxaliplatin with or without 5-Fluorouracil (5-FU) or Capecitabine in metastatic or locally recurrent gastric cancer previously untreated with chemotherapy for advanced disease (part II).

Secondary objectives:

* To establish the safety profile.
* To assess the Overall Response Rate (ORR) based on the World Health Organization (WHO) criteria
* To assess the Overall Survival (OS)

Detailed description:
The purpose of this study (Part II) was to evaluate the time to progression in the 3 arms at an optimal dose level of docetaxel and oxaliplatin defined during a prior pilot (Part I) phase study. The estimated duration of treatment was to be 6 months. Treatment was to be administered up to progression, unacceptable toxicities, or withdrawal of consent. The reason and date of removal of all participants was documented on the case report form.

Participants who ended treatment but had not yet progressed (e.g. unacceptable toxicities or withdrawal of consent) were be followed every 8 weeks with a complete tumor assessment until documented progression or further anti-tumor therapy. Then, they would be followed every 3 months after progression for survival status; date of death or progression were reported. Participants who ended treatment for progression, were to be followed every 3 months until death. Date of death was reported. The planned duration of the study was 30 months.

Arms:
arm 1: Docetaxel (Taxotere) in combination with Oxaliplatin (Eloxatin). Each chemotherapy cycle was repeated every 21 days.

Participants received either the optimal or non-optimal dose for Taxotere and Eloxatin. Participants who received the optimal dose for Taxotere and Eloxatin were analyzed in this study. arm 2: Docetaxel (Taxotere) in combination with Oxaliplatin (Eloxatin) and 5-FU (5-Fluorouracil). Each chemotherapy cycle was repeated every 14 days.

Participants received either the optimal or non-optimal dose for Taxotere, Eloxatin and 5-FU. Participants who received the optimal dose for Taxotere, Eloxatin and 5-FU were analyzed in this study. arm 3: Docetaxel (Taxotere) in combination with Oxaliplatin (Eloxatin) and capecitabine (Xeloda). Each chemotherapy cycle was repeated every 21 days.

Participants received either the optimal or non-optimal dose for Taxotere, Eloxatin and Xeloda. Participants who received the optimal dose for Taxotere, Eloxatin and Xeloda were analyzed in this study.

Interventions: intervention 1: Docetaxel + Oxaliplatin intervention 2: Docetaxel + Oxaliplatin + 5-FU intervention 3: Docetaxel + Oxaliplatin + Capecitabine
Intervention descriptions: intervention 1: Dose level 1 (non-optimal dose):

Docetaxel 75 mg/m² as an 1-hour intravenous (IV) infusion on day 1 followed by Oxaliplatin 100 mg/m² as a two to six-hour IV infusion on day 1

Dose level 2 (optimal dose):

Docetaxel 75 mg/m² as an 1-hour IV infusion on day 1 followed by Oxaliplatin 130 mg/m² as a two to six-hour IV infusion on day 1 intervention 2: Dose level 1 (non-optimal dose):

Docetaxel 40 mg/m² as a 1-hour intravenous (IV) infusion day 1; Oxaliplatin 85 mg/m² simultaneously with folinic acid 400 mg/m² as a 2-hour IV infusion, followed by 5-FU 2400 mg/m2 as a 46-hour continuous infusion day 1.

Dose level 2 (optimal dose):

Docetaxel 50 mg/m² as a 1-hour IV infusion day 1; Oxaliplatin 85 mg/m² simultaneously with folinic acid 400 mg/m² as a 2-hour IV infusion, followed by 5-FU 2400 mg/m² as a 46-hour continuous infusion day 1. intervention 3: Dose level 1 (optimal dose):

Docetaxel 50 mg/m² as a 1-hour intravenous (IV) infusion on day 1, Oxaliplatin 100 mg/m² as a two to six-hour IV infusion on day 1, Capecitabine 625 mg/m2 two times a day continuously.

Dose level 2 (non-optimal dose):

Docetaxel 65 mg/m² as a 1-hour IV infusion on day 1, Oxaliplatin 100 mg/m² as a two to six-hour IV infusion on day 1, Capecitabine 625 mg/m² two times a day continuously.

Protocol document: