Veliparib

Overall survival is defined as the time from the date that the participant was randomized to the date of the participant's death. Overall survival was estimated using Kaplan-Meier methodology. Participants still alive at the data cut-off date were censored at the date they were last known to be alive.

Time to death for a given subject will be defined as the number of days from the date that the subject was randomized to the date of the subject's death.

Time to PFS is defined as the number of days from the date the participant was randomized to the date the participant experiences radiographic disease progression (as determined by the investigators), or to the date of death (all causes of mortality) if disease progression is not reached. All events of disease progression occurring on or before the Primary Analysis Cutoff date of 05 April 2019 were to be included, regardless of whether the event occurred while the participant was still taking study drug or had previously discontinued study drug. PFS was estimated for each treatment group using Kaplan-Meier methodology.

Pathological complete response (pCR) in the breast tissue and the lymph node tissue will be assessed upon completion of pre-operative systemic therapy and definitive surgery.

PFS was defined as the number of days from the date the participant was randomized to the date the participant experienced an event of disease progression or death, whichever occurred first. All events of disease progression were included, whether the participant was still taking or had discontinued study drug. Events of death were included for participants who had not experienced an event of disease progression, if the death occurred within 8 weeks of the last evaluable disease progression assessment. If the participant did not have an event of disease progression and the participant had not died as defined above, data were censored at the date of the participant's last evaluable disease progression assessment. The PFS distribution was estimated using Kaplan-Meier methodology. Point estimates and 95% confidence intervals (95% CIs) for the PFS distribution quartiles are provided.

Overall survival was defined as the number of days from the date of randomization to the date of death. All events of death were included, regardless of whether the event occurred while the participant was still taking study treatment or after treatment was discontinued. If a participant had not died, the data were censored at the date the participant was last known to be alive.

A DLT was defined as any of the following drug-related toxicities, graded according to the Common Toxicity Criteria for Adverse Events (CTCAE), V.4.0: 1. Events associated with treatment delay \>14 days in initiating Cycle 2 therapy: Grade 4 thrombocytopenia, neutropenia, or febrile neutropenia, or Grade 3 febrile neutropenia with fever for \> 7 days 2. Grade ≥ 3 non-hematologic toxicity with ≥ 2 grade increase from baseline and attributed to veliparib treatment, excluding nausea or vomiting for ≤ 48 hours or inadequately treated, electrolyte abnormalities resolving in ≤ 24 hours, hypersensitivity reactions or alopecia 3. Grade 2 non-hematologic toxicity of ≥ 2 grade increase from baseline, attributed to veliparib treatment requiring delay of \>14 days in initiation of Cycle 2 4. Any toxicity of ≥ 2-grade increase from baseline, attributed to veliparib and requiring a dose modification in Cycle 1 or omission of carboplatin, \>1 daily etoposide dose, or \>30% veliparib doses in Cycle 1

Plasma concentrations of veliparib were determined using a validated online solid-phase extraction followed by high-performance liquid chromatography with tandem mass spectrometric detection (HPLC LC-MS/MS). The lower limit of quantitation (LLOQ) for veliparib was established at ≥ 1.05 ng/mL.

Plasma concentrations of veliparib were determined using a validated online solid-phase extraction followed by high-performance liquid chromatography with tandem mass spectrometric detection (HPLC LC-MS/MS). The lower limit of quantitation (LLOQ) for veliparib was established at ≥ 1.05 ng/mL.

The area under the plasma concentration-time curve from time 0 to 8 hours post-dose for veliparib was estimated using non-compartmental methods.

The area under the plasma concentration-time curve from time 0 to 12 hours post-dose for veliparib was estimated using non-compartmental methods. AUC(0-12) was calculated by assuming the concentration at 12 hours post-dose was the same as the pre-dose concentration.

Plasma concentrations of veliparib were determined using a validated online solid-phase extraction followed by high-performance liquid chromatography with tandem mass spectrometric detection (HPLC LC-MS/MS). The lower limit of quantitation (LLOQ) for veliparib was established at ≥ 1.05 ng/mL. Dose normalized Cmax is calculated as Cmax / veliparib dose in mg.

The area under the plasma concentration-time curve from time 0 to 8 hours post-dose for veliparib was estimated using non-compartmental methods. Dose normalized AUC(0-8) is calculated as AUC(0-8) / veliparib dose in mg.

The area under the plasma concentration-time curve from time 0 to 12 hours post-dose for veliparib was estimated using non-compartmental methods. AUC(0-12) was calculated by assuming the concentration at 12 hours post-dose was the same as the pre-dose concentration. Dose normalized AUC(0-12) is calculated as AUC(0-12) / veliparib dose in mg.

Etoposide plasma concentrations were determined using liquid chromatography with tandem mass spectrometric detection with a lower limit of quantitation 160 ng/mL.

Etoposide plasma concentrations were determined using liquid chromatography with tandem mass spectrometric detection with a lower limit of quantitation 160 ng/mL.

The area under the plasma concentration-time curve from 0 to the last measurable concentration (24 hours) of etoposide was estimated using using non-compartmental methods.

The area under the plasma concentration-time curve from 0 to infinity for etoposide was estimated using using non-compartmental methods.

The terminal half-life of etoposide was estimated using using non-compartmental methods. Values reported represent the harmonic mean ± pseudo-standard deviation.

Etoposide plasma concentrations were determined using liquid chromatography with tandem mass spectrometric detection with a lower limit of quantitation 160 ng/mL. Dose normalized Cmax is calculated as Cmax / etoposide dose in mg/m².

The area under the plasma concentration-time curve from 0 to the last measurable concentration (24 hours) of etoposide was estimated using using non-compartmental methods. Dose normalized AUC(0-t) is calculated as AUC(0-t) / etoposide dose in mg/m².

The area under the plasma concentration-time curve from 0 to infinity for etoposide was estimated using using non-compartmental methods. Dose normalized AUC(0-∞) is calculated as AUC(0-∞) / etoposide dose in mg/m².

Progression-free survival (PFS) is defined as the time from the date of randomization to the date of earliest radiographic disease progression or death provided no radiographic disease progression occurred. If a participant did not have an event of disease progression and had not died on or prior to the cutoff for PFS analysis, the participant's data was censored at the date of their last disease assessment or randomization date provided participant did not have any post-baseline disease assessment. Disease assessments were performed using computed tomography according to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1. Progressive Disease (PD) was defined as at least a 20% increase in the size of target lesions and an absolute increase of at least 5 mm taking as reference the smallest lesion size recorded since the treatment started (baseline or after), or the appearance of one or more new lesions.

Cmax, Tmax ,and AUC, and safety parameters

The following pharmacokinetic parameters will be analyzed: Tmax, the terminal phase elimination rate constant (β), the natural logarithms of Cmax, AUCt and AUC∞.

Blood pressure, Heart rate

Hematology, Chemistry, Urinalysis

Assess the relative bioavailability of Formulation A, Formulation B and Formulation C with or without food measured using area under the plasma concentration-time curve (AUC), the maximum observed plasma concentration (Cmax), and time to Cmax (Tmax).