| Primary | Cohorts 1 and 2: Percentage of Participants With a Confirmed Best Overall Response of Complete Response (CR) or Partial Response (PR) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.0 During Dual-Agent Treatment | Tumor response was assessed using RECIST version 1.0 to determine the objective response (OR) rate, or the percentage of participants with either confirmed CR or PR. CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30 percent (%) decrease in the sum of the longest diameter compared to Baseline. Response was to be confirmed a minimum of 4 weeks after the initial response was documented. The OR rate was calculated as [number of participants meeting the above criteria divided by the number analyzed] multiplied by 100. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Number | 80% Confidence Interval | percentage of participants | | Up to approximately 9.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Primary | Cohorts 1 and 2: Percentage of Participants With a Confirmed Best Overall Response of CR, PR, or Stable Disease (SD) According to RECIST Version 1.0 During Dual-Agent Treatment | Tumor response was assessed using RECIST version 1.0 to determine the clinical benefit response (CBR) rate, or the percentage of participants with either confirmed CR or PR, or SD lasting at least 6 months. CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30% decrease in the sum of the longest diameter compared to Baseline. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient (20%) increase to qualify for disease progression, in addition to no new target lesions. Response was to be confirmed a minimum of 4 weeks after the initial response was documented. The CBR rate was calculated as [number of participants meeting the above criteria divided by the number analyzed] multiplied by 100. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Number | 80% Confidence Interval | percentage of participants | | Up to approximately 9.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohort 3: Percentage of Participants With a Confirmed Best Overall Response of CR or PR According to RECIST Version 1.0 During Single-Agent Treatment With Pertuzumab | Tumor response was assessed using RECIST version 1.0 to determine the OR rate, or the percentage of participants with either confirmed CR or PR. CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30% decrease in the sum of the longest diameter compared to Baseline. Response was to be confirmed a minimum of 4 weeks after the initial response was documented. The OR rate was calculated as [number of participants meeting the above criteria divided by the number analyzed] multiplied by 100. | All Treated Population (Cohort 3 only). | Posted | | Number | 80% Confidence Interval | percentage of participants | | Up to approximately 7.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab (Cohort 3) | Females with HER2-positive metastatic breast cancer received single-agent treatment with pertuzumab. Recruitment for Cohort 3 was conducted following primary analysis of Cohorts 1 and 2. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, administered on Day 1 of each 3-week cycle. The treatment regimen was maintained until disease progression, intolerable toxicity, death, and/or transition to dual-agent therapy with trastuzumab. |
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| Secondary | Cohort 3: Percentage of Participants With a Confirmed Best Overall Response of CR, PR, or SD According to RECIST Version 1.0 During Single-Agent Treatment With Pertuzumab | Tumor response was assessed using RECIST version 1.0 to determine the CBR rate, or the percentage of participants with either confirmed CR or PR, or SD lasting at least 6 months. CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30% decrease in the sum of the longest diameter compared to Baseline. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient (20%) increase to qualify for disease progression, in addition to no new target lesions. Response was to be confirmed a minimum of 4 weeks after the initial response was documented. The CBR rate was calculated as [number of participants meeting the above criteria divided by the number analyzed] multiplied by 100. | All Treated Population (Cohort 3 only). | Posted | | Number | 80% Confidence Interval | percentage of participants | | Up to approximately 7.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab (Cohort 3) | Females with HER2-positive metastatic breast cancer received single-agent treatment with pertuzumab. Recruitment for Cohort 3 was conducted following primary analysis of Cohorts 1 and 2. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, administered on Day 1 of each 3-week cycle. The treatment regimen was maintained until disease progression, intolerable toxicity, death, and/or transition to dual-agent therapy with trastuzumab. |
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| Secondary | Cohorts 1 and 2: Duration of Response According to RECIST Version 1.0 | Tumor response was assessed using RECIST version 1.0 to determine OR and CBR rates. Duration of OR was defined as time from initial response of CR or PR to time of disease progression or death. Duration of CBR was defined similarly as time from initial response of CR or PR, or SD lasting at least 6 months, to time of disease progression or death. CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30% decrease in the sum of the longest diameter compared to Baseline. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient (20%) increase to qualify for disease progression, in addition to no new target lesions. Participants without progression or death following confirmed CR or PR were censored at the last tumor assessment. Duration of response was estimated using Kaplan-Meier analysis and expressed in weeks. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Median | Full Range | weeks | | Up to approximately 9.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohorts 1 and 2: Time to Objective Response According to RECIST Version 1.0 | Tumor response was assessed using RECIST version 1.0 to determine the OR rate. Time to response was defined as the time from first dose to the time of initial response of CR or PR. CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30% decrease in the sum of the longest diameter compared to Baseline. Participants with disease progression were censored at the time of progression, and those with neither disease progression nor OR were censored at the last tumor assessment. Time to response was estimated using Kaplan-Meier analysis and expressed in weeks. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Median | Full Range | weeks | | Up to approximately 21 months (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression; final analysis using February 2008 cutoff date) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohorts 1 and 2: Percentage of Participants With Disease Progression According to RECIST Version 1.0 | Tumor response was assessed using RECIST version 1.0 to assess for disease progression, defined as at least a 20% increase in the sum of the longest diameter, taking as reference the smallest sum of the longest diameter observed at previous tumor assessment, or the appearance of any new lesions. The percentage of participants with disease progression was calculated as [number of participants meeting the above criteria divided by the number analyzed] multiplied by 100. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Number | | percentage of participants | | Up to approximately 9.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohorts 1 and 2: Time to Progression (TTP) According to RECIST Version 1.0 | Tumor response was assessed using RECIST version 1.0 to assess for disease progression, defined as at least a 20% increase in the sum of the longest diameter, taking as reference the smallest sum of the longest diameter observed at previous tumor assessment, or the appearance of any new lesions. TTP was defined as the time from first dose to the time of first documented disease progression. Participants who withdrew from the study without documented progression were censored at the last tumor assessment. TTP was estimated using Kaplan-Meier analysis and expressed in weeks. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Median | Full Range | weeks | | Up to approximately 9.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohorts 1 and 2: Progression-Free Survival (PFS) According to RECIST Version 1.0 | Tumor response was assessed using RECIST version 1.0 to assess for disease progression, defined as at least a 20% increase in the sum of the longest diameter, taking as reference the smallest sum of the longest diameter observed at previous tumor assessment, or the appearance of any new lesions. PFS was defined as the time from first dose to the time of disease progression or death. Participants without progression or death were censored at the last tumor assessment. PFS was estimated using Kaplan-Meier analysis and expressed in weeks. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Median | 80% Confidence Interval | weeks | | Up to approximately 9.5 years (at Screening; on Day 15 of Cycles 2, 4, 6, and 8 [cycle length 3 weeks]; then every 3 months until disease progression) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohorts 1 and 2: Percentage of Participants Who Died | Participants were followed for survival data during and after treatment for a maximum of 3 years after the last dose until death, withdrawal of consent, or loss to follow-up. The percentage of participants who died was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Number | | percentage of participants | | Up to approximately 4.5 years (during treatment; then every 4 months until death, withdrawn consent, loss to follow-up, or 3 years after last dose; final analysis using November 2010 cutoff date) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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| Secondary | Cohorts 1 and 2: Overall Survival (OS) | Participants were followed for survival data during and after treatment for a maximum of 3 years after the last dose until death, withdrawal of consent, or loss to follow-up. OS was defined as the time from first dose to the time of death from any cause. Participants who did not experience death were censored at the last known alive date. OS was estimated using Kaplan-Meier and expressed in months. | All Treated Population (Cohorts 1 and 2 only). | Posted | | Median | 80% Confidence Interval | months | | Up to approximately 4.5 years (during treatment; then every 4 months until death, withdrawn consent, loss to follow-up, or 3 years after last dose; final analysis using November 2010 cutoff date) | | | | ID | Title | Description |
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| OG000 | Pertuzumab + Trastuzumab (Cohorts 1 and 2) | Females with HER2-positive metastatic breast cancer received dual-agent treatment with pertuzumab and trastuzumab. Recruitment for Cohorts 1 and 2 was conducted separately; however, the same regimen was administered to both sets of participants. Trastuzumab was administered via IV infusion as 2 mg/kg once weekly, or as 6 mg/kg every 3 weeks, beginning on Day 1 of Cycle 1. Pertuzumab was administered via IV infusion at a loading dose of 840 mg followed by a standard dose of 420 mg every 3 weeks, beginning on Day 2 of Cycle 1. Thereafter, both medications were administered on Day 1 of each 3-week cycle. Treatment continued for a minimum of 8 cycles and could be extended until disease progression, intolerable toxicity, or death. |
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