Comparing Two Treatments for Ovarian Cancer: Standard Chemotherapy Plus Enzastaurin, or Placebo ("Sugar Pill")

PFS was defined as time from date of randomization to first date of determined progressive disease (PD) or death from any cause. PD defined using Response Evaluation Criteria in Solid Tumors (RECIST v1.0) and Gynecological Cancer Intergroup (GCIG) criteria. RECIST: ≥20% increase in sum of longest diameter (LD) of target lesions taking as reference the smallest sum LD recorded since treatment started or appearance of ≥ 1new lesions and/or unequivocal progression of existing non-target lesions. GCIG: Cancer Antigen-125 (CA-125) serum ≥2 times upper limit of normal (ULN) for those in normal range or nadir for participants who never achieved normal range. Participants not known to have died and did not have PD were censored at last progression-free assessment. Those who received subsequent systemic anticancer therapy (after study drug discontinued) prior to determined PD or death, were censored at date of last progression-free disease assessment prior to post-discontinuation chemotherapy.

PFS was defined as time from date of randomization to first date of determined PD or death from any cause. PD defined using RECIST v1.0 and GCIG criteria. RECIST v1.0: as ≥20% increase in sum of LD of target lesions taking as reference the smallest sum LD recorded since treatment started or appearance of ≥1 new lesions and/or unequivocal progression of existing non-target lesions. GCIG: CA-125 serum ≥2 times ULN for those in normal range or nadir (the lowest value of blood counts after chemotherapy) for participants who never achieved normal range. Participants not known to have died and did not have PD were censored at last progression-free assessment. Those who received subsequent systemic anticancer therapy (after study drug discontinued) prior to determined PD or death, were censored at date of last progression-free disease assessment prior to post-discontinuation chemotherapy.

ORR was the percentage of participants with a CR or PR using RECIST v1.0 and CA-125 GCIG criteria. RECIST v1.0: CR was defined as the disappearance of all tumors. PR was defined ≥30% decrease in the sum of the LD of target lesions taking as reference the baseline sum LD or complete disappearance of target lesions, with persistence (but not worsening) of ≥1 nontarget lesions and appearance of no new lesions. GCIG: CA-125 serum ≥2 times above ULN for those in normal range or nadir for participants who never achieved normal range. ORR calculated as: (CR + PR) / (total number of participants qualified for tumor response analysis per arm) * 100.

Rate of response was defined using RECIST v1.0 and CA-125 GCIG criteria. RECIST v1.0: CR was defined as the disappearance of all target lesions. PR was defined ≥30% decrease in the sum of the LD of target lesions taking as reference the baseline sum LD or complete disappearance of target lesions, with persistence (but not worsening) of ≥1 nontarget lesions and appearance of no new lesions. SD was defined as small changes that did not meet the above criteria. PD was defined as having a ≥20% increase in the sum of the LD of target lesions. GCIG: CA-125 serum ≥2 times above ULN for those in normal range or nadir for participants who never achieved normal range. Rate of response calculated as: (CR + PR + SD)/(total number of participants qualified for tumor response analysis per arm) *100.

PE measured using Immunohistochemistry (IHC) assay, scored 0 (negative, no staining) to 3+ (brightest staining). IHC H-scores for protein biomarkers (PKCβ2, PTEN, pCREB, pGSK3b, pS6) calculated as: [1*(percentage of cells stained [PCS] as 1+)]+[2*(PCS as 2+)]+[3*(PCS as 3+)]. High PE: ≥marker threshold value and Low PE: <marker threshold value. PFS: date of randomization to PD or death. PD defined using RECIST v1.0 and GCIG criteria. RECIST: ≥20% increase in sum of LD of target lesions taking as references smallest sum LD recorded since treatment started or appearance of ≥1 new lesions and/or unequivocal progression of existing non-target lesions. GCIG: CA-125 serum ≥2 times ULN for those in normal range or nadir for those who never achieved normal range. Per protocol, Part 1 was not included as it is an open-label safety lead-in portion with PK characterization.

Clinically significant events were defined as SAEs and other non-serious AEs regardless of causality. A summary of SAEs and other non-serious AEs regardless of causality is located in the Reported Adverse Events module. The number of participants SAEs, other non-serious AEs, and those who died due to PD are included.

Cmax,ss for enzastaurin, its metabolite LSN326020 (LY326020) and total analytes are reported.

AUCτ,ss for enzastaurin, its metabolite LSN326020 (LY326020), and total analytes are reported.