A Study to Evaluate the Effect of the Combination of Pertuzumab With Carboplatin-Based Standard Chemotherapy in Patients With Recurrent Ovarian Cancer

Disease progression was assessed according to RECIST (Response Evaluation Criteria In Solid Tumors), for participants with measurable disease, or by changes in CA 125 (Cancer Antigen 125) according to GCIG (Gynecologic Cancer Inter Group) for all participants. Participants who did not progress or died while being followed were censored at the time of the last valid tumor assessment or valid CA 125 assessment.

Progression-free survival was defined as the time from first administration of study drug (Study Day 1) to documented disease progression or death, whichever occurred earlier. Disease progression was assessed according to RECIST, for participants with measurable disease, or by changes in CA 125 according to GCIG for all participants. Participants who did not progress or died while being followed were censored at the time of the last valid tumor assessment or valid CA 125 assessment.

The probability of being event free (no disease progression or death events) at 1 year in participants remaining at risk.

Response by tumor measurement occurred if there was documented and confirmed complete response (CR) or partial response (PR). For all participants, response was assessed by both the RECIST and by CA 125 levels, according to whether the participant had measurable or non-measurable disease at baseline. Response according to CA 125 levels was defined as at least a 50% reduction from baseline. The decrease had to be confirmed and maintained for at least 28 days. The confirmatory sample must have been less than or equal to the previous sample (within an assay variability of 10%). For overall response, the response categories were "response", "stable disease" and "progressive disease". Stable disease included 1) stable disease as defined by RECIST for solid tumors and 2) CA 125 levels that had not met the definition of "response" or "progressive disease".

For participants who achieved a response, the duration of response was defined as the interval between initial documentation of response to the first documentation of disease progression or death. Participants who responded and did not progress or die while on study or while being followed were censored at the last valid tumor or CA 125 measurement.

Disease progression was assessed according to RECIST, for participants with measurable disease, or by changes in CA 125 according to GCIG for all participants. Participants who did not progress while being followed were censored at the time of the last valid tumor assessment or valid CA 125 assessment.

The time to progressive disease is the interval of time from date of first dose of study medication to date of first documentation of progressive disease by either RECIST or CA 125 criteria. Participants who never progressed while being followed were censored at the last valid tumor measurement or CA 125 measurement.

Time to response was the date of first dose of study medication to the date of the first documentation of response, according to CA 125 criteria for all participants or response according to RECIST criteria for participants with measurable disease. If response was evaluable by both criteria, then the date of response was for the earlier of the two events.

Survival was the interval of time from date of first dose of study medication to date of death at any time. Participants who had not died were censored at the date of last contact when they were known to be alive.