ABT-263

Assess the oral bioavailability of Formulation B1, Formulation B2, Formulation C, and Formulation D relative to that of Formulation A being assessed in ongoing Phase 1/2a ABT-263 studies

• assess the safety profile of ABT-263 in combination with erlotinib; • study the pharmacokinetic interaction between ABT-263 and erlotinib; • determine the maximum tolerated dose (MTD) of ABT-263 when administered with erlotinib

• assess the safety profile of ABT-263 in combination with irinotecan; • study the pharmacokinetic interaction between ABT-263 and irinotecan; • determine the maximum tolerated dose (MTD) of ABT-263 when administered with irinotecan.s

• assess the safety profile of ABT-263 as a monotherapy

Evaluate safety at the defined recommended Phase 2 dose (RPTD) and schedule of ABT-263 in combination with Paclitaxel

Evaluate preliminary data regarding objective response rate (ORR), progression free survival (PFS), time to tumor progression (TTP), overall survival (OS), duration of overall response, and, ECOG performance status

An AE is defined as any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. An SAE is one that: results in death, hospitalization, prolongation of hospitalization, or persistent or significant disability/incapacity; is life-threatening, a congenital anomaly, or other important medical event. Events were graded as 1=mild, 2=moderate, 3=severe, 4=life-threatening, or 5=death. The investigator assessed the relationship of each event to the use of study drug as either probably related, possibly related, probably not related or not related. A treatment-emergent adverse event is defined as any adverse event with onset or worsening reported by a subject from the time that the first dose of study drug is administered until 30 days have elapsed following discontinuation of study drug administration. Deaths category included non treatment emergent deaths.

DLTs were graded according to NCI CTCAE version 3.0 (grade 1=mild; grade 2=moderate; grade 3=severe; grade 4=life threatening; grade 5=death). Any of the following events, considered possibly or probably related to the administration of navitoclax, were considered a DLT: Grade 4 thrombocytopenia (\< 25,000/mm\^3); platelet counts \< 25,000/mm\^3, Grade 2 or higher bleeding associated with thrombocytopenia; all other Grade 3, 4 or 5 adverse events were considered a DLT. Exceptions included: Grade 3, 4 febrile neutropenia less than 7 days; Grade 3, 4 leukopenia; Grade 3, 4 lymphopenia; Grade 3 nausea, vomiting and/or diarrhea unless unresponsive to treatment; Grade 2 toxicity that requires dose modification or delay of \> 1 week.

The MTD was defined as the dose at which 30% of participants experienced a DLT during the first cycle. DLTs were graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 3.0 (grade 1=mild; grade 2=moderate; grade 3=severe; grade 4=life threatening; grade 5=death). Any of the following events, considered possibly or probably related to the administration of navitoclax, were considered a DLT: Grade 4 thrombocytopenia (\< 25,000/mm\^3); platelet counts \< 25,000/mm\^3, Grade 2 or higher bleeding associated with thrombocytopenia; all other Grade 3, 4 or 5 adverse events were considered a DLT. Exceptions included: Grade 3, 4 febrile neutropenia less than 7 days; Grade 3, 4 leukopenia; Grade 3, 4 lymphopenia; Grade 3 nausea, vomiting and/or diarrhea unless unresponsive to treatment; Grade 2 toxicity that requires dose modification or delay of \> 1 week.

The RPTD was determined based on observed DLTs and/or determination of the MTD in phase 1. (See Outcome Measures 2 and 3 above for definition of DLT and MTD.)

The AUC24 was derived and reported from Cycle 1 Day 1 values and Cycle 1 Day 14 values; the pre-dose value taken on Day 14 was utilized as 24-hour timepoint on Day 14 to generate AUC24 for Day 14.

The AUC24 was derived and reported from Cycle 1 Day 1 values and Cycle 1 Day 14 values; the pre-dose value taken on Day 14 was utilized as 24-hour timepoint on Day 14 to generate AUC24 for Day 14.

For t1/2, the harmonic mean and psuedo-standard deviation are used.

An AE is defined as any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. An SAE is one that: results in death, hospitalization, prolongation of hospitalization, or persistent or significant disability/incapacity; is life-threatening, a congenital anomaly, or other important medical event. Events were graded as 1=mild, 2=moderate, 3=severe, 4=life-threatening, or 5=death. The investigator assessed the relationship of each event to the use of study drug as either probably related, possibly related, probably not related or not related. A treatment-emergent adverse event is defined as any adverse event with onset or worsening reported by a subject from the time that the first dose of study drug is administered until 30 days have elapsed following discontinuation of study drug administration. Deaths category included non treatment emergent deaths.

1a: Determination of dose limiting toxicity (DLT) and maximum tolerated dose (MTD) under a 14/21 day dosing schedule

Phase 1b: Determination of ABT-263 dose limiting toxicity (DLT) and maximum tolerated dose (MTD) under a 21 day continuous dosing schedule.

Phase 2a: Continued assessment of the safety profile of ABT-263 at the Recommended Phase 2 Dose (RPTD) and schedule under a 21 day continuous dosing.

Phase 2a: Assessment of the preliminary efficacy signals of ABT-263, including biomarker assessment, at the Recommended Phase 2 Dose (RPTD) and schedule under a 21 day continuous dosing.

Continued assessment of the safety profile of ABT-263.

Continued assessment of the preliminary efficacy signals of ABT-263.