DLTs consisted of only drug-related toxicities (neurologic and non-neurologic DLTs). A neurologic DLT was defined as grade 3/4 clinically significant peripheral motor and/or sensitive neuropathy. Non-neurologic DLTs mainly included the following: grade 3/4 clinically significant non-hematological toxicity (except nausea), grade 4 neutropenia lasting >=7 days, thrombocytopenia (<=25000 cells per cubic millimeter), inability to begin next treatment within 2 weeks of scheduled dosing due to unresolved toxicity, treatment delay (due to toxicity) of >5 days, for Days 8 or 15 of weekly paclitaxel.

Safety Population (Pilot part): all participants who received at least one dose of investigational product in the Pilot part of the study

OS was defined as the time from randomization until death due to any cause. For participants who did not die, time to death was censored at the time of last contact. For censored participants, time to death was defined as the time from randomization to the time of last contact.

Intent-to-Treat Population: all participants who were randomized to study treatment, regardless of whether they actually received study medication

Pharmacokinetic (PK) samples were collected at pre-dose and at 0.5, 1.0, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 8 and 14.

PK Parameter Population: all participants for whom the PK parameter could be estimated

PK samples were collected at pre-dose and at 0.5, 1.0, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 8 and 14.

PK Parameter Population

PK samples were collected at pre-dose and at 0.5, 1.0, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 8 and 14. AUC is defined as the area under the lapatinib concentration-time curve as a measure of drug exposure. AUC(0-24) is area under the plasma concentration-time curve from time 0 to 24 hours after oral adminisation.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8. AUC is defined as the area under the paclitaxel concentration-time curve as a measure of drug exposure. AUC(0-24) is area under the plasma concentration-time curve from the start of infusion (time 0) to 24 hours after the start of the infusion.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8. AUC is defined as the area under the paclitaxel concentration-time curve as a measure of drug exposure. AUC(0-inf) is area under the plasma concentration-time curve from the start of infusion (time 0) extrapolated to infinity.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8. Half-life is defined as the time required for the amount of the drug in the plasma to decrease by half.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8. Clearance is defined as the clearance of drug from plasma, which is defined as the volume of plasma from which drug is removed per unit time.

PK Parameter Population

PK samples were collected just before the start of infusion and 0.5, 1.0 (immediately before terminating the infusion), 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post dose on Days 1 and 8. Vss is the volume of distribution at steady state of paclitaxel.

PK Parameter Population

PFS was defined as the time from randomization until the earliest date of disease progression (PD) or death due to any cause. Per Response Evaluation Criteria in Solid Tumors (RECIST), version 1.0, PD is defined as at least a 20% increase in the sum of the longest diameter (LD) of target lesions, taking as reference the smallest sum LD recorded since the treatment started, or the appearance of one or more new lesions.

ITT Population. For participants whose disease did not progress or who did not die, PFS was censored at the time of the last independently assessed radiological scan preceding the initiation of any alternate anti-cancer therapy.

Time to progression was defined as the time from randomization until the earliest date of disease progression or death due to disease. Per RECIST, version 1.0, PD is defined as at least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started, or the appearance of one or more new lesions.

ITT Population

Overall response was defined as the percentage of participants achieving either complete response (CR) or partial response (PR). Per RECIST, version 1.0, CR was defined as the disappearance of all target lesions, and PR was defined as a greater than 30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD.

ITT Population

Time to response was defined as the time from randomization to CR (the disappearance of all target lesions) or PR (a greater than 30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD). For participants who did not achieve a CR or PR, time to response was censored at the last assessment prior to other cancer therapies. For censored participants, time to response was defined as the time from randomization to the time of the last assessment prior to the administation of other cancer therapies.

ITT Population. Only those participants achieving a CR or PR were assessed.

Duration of response was defined as the time from the first documented evidence of CR (the disappearance of all target lesions) or PR (a greater than 30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD) until the first documented sign of disease progression (at least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started, or the appearance of one or more new lesions) or death due to any cause, if sooner.

ITT Population. Only those participants achieving a CR or PR were assessed.

The Common Terminology Criteria for Advere Events (CTCAE) is a descriptive terminology that can be used for AE reporting. Grade (G) refers to the severity of the AE. The CTCAE displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade (G) refers to the severity of the AE: G 1, mild AE; G 2, moderate AE; G 3, severe AE; G 4, life-threatening/disabling AE; G 5, death related to the AE.

Safety Population: all participants who were randomized and took at least one dose of study medication

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-C30 is a 30-item, self-reporting questionnaire assessing 15 domains (5 functional scales [physical/role/emotional/cognitive/social]; 9 symptom scales [fatigue/nausea and vomiting/pain/dyspnea/insomnia/appetite loss/constipation/diarrhea/financial difficulties]; GHS/QOL scale). Participants assessed most statements on a 4-point scale (1, not at all; 4, very much); two questions used a 7-item scale (1, poor; 7, excellent). Scores were averaged and transformed to a 0-100 scale. A high score indicates both a high/healthy level of functioning and a high level of symptoms/problems.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

The EORTC QLQ-STO22 is a 22-item, self-reporting instrument consisting of 5 scales and 4 single items to assess health-related quality of life (HRQOL) issues related to dysphagia, eating restrictions, reflux, and abdominal pain, as well as specific symptoms that may occur during chemotherapy or radiation treatment. Scores are averaged and transformed to a 0-100 scale. For the symptom scales and items, a high score is equivalent to worse or more symptoms. In the functional scales, however, a high score is equivalent to better function.

ITT Population. Only those participants who contributed data were analyzed.

EGFR protein expression on the surface of cells in gastric cancer tissue samples was measured using a moncolonal antibody specific for the extracellular region of EGFR, and the degree of membrane staining was evaluated. 3+ indicates positive EGFR expression; <3+ indicates negative EGFR expression.

ITT Population. Only those participants for whom immunohistochemistry testing was conducted were analyzed.

HER2 protein expression on the surface of cells in gastric cancer tissue samples was measured using a monoclonal antibody specific for the extracellulr region of HER2, and the degree of membrane staining was evaulated. The immunohistochemistry test gives a score of 0 to 3+ and measures the amount of HER2 receptor protein on the surface of cells in a gastric cancer tissue sample. Score of 0 to 1+, "HER2 negative"; score of 2+, "borderline"; score of 3+, "HER2 positive."

ITT Population. Only those participants for whom immunohistochemistry testing was conducted were analyzed.

An inadequate number of tissue samples were obtained; thus, analysis could not be performed.

ITT Population