Participants receive 22 mg/m^2 of ridaforolimus administered orally for 5 consecutive days each week (2 days rest) in consecutive 28-day cycles for up to six months. Eligible participants can receive additional treatment in an extension phase of the study.

Participants receive 28 mg/m^2 of ridaforolimus administered orally for 5 consecutive days each week (2 days rest) in consecutive 28-day cycles for up to six months. Eligible participants can receive additional treatment in an extension phase of the study.

Participants receive 33 mg/m^2 of ridaforolimus administered orally for 5 consecutive days each week (2 days rest) in consecutive 28-day cycles for up to six months. Eligible participants can receive additional treatment in an extension phase of the study.

Oral administration of 10 mg enteric-coated tablets at doses of 22 mg/m^2, 28 mg/m^2, or 33 mg/m^2 based on body surface area (BSA), once daily for 5 consecutive days each week in consecutive 28-day cycles.

DLT defined using NCI-CTCAE v.4.0 as any of the following events occurring during the first 28-day cycle that were possibly, probably, or definitely study drug-related: Grade 4 neutropenia for ≥5 days; Grade 3-4 neutropenia associated with fever, antibiotics, or hospitalization for infection; Grade 4 thrombocytopenia for ≥5 days or requiring platelet transfusion; ≥Grade 3 hyperglycemia for ≥5 days despite management; ≥Grade 3 diarrhea for >24 hours despite management; ≥Grade 3 nausea or vomiting despite management; any other Grade ≥3 non-hematological toxicity persisting despite management (except alopecia, transient electrolyte abnormalities, transient Grade 3 liver function test elevations, and Grade 3 neurotoxicity for participants with baseline Grade 3 neurotoxicity); inability to complete DLT assessment period, interruption in dosing for >10 dosing days during DLT assessment period, or any delay in the initiation of the next cycle for >10 dosing days due to any related toxicity.

AUC is a measure of the amount of drug in the blood over time. Whole blood samples were collected pre-dose (within 5 minutes of ridaforolimus administration) and post-dose at specified time points on Day 5 of the first week of Cycle 1 to determine AUC0-24 hr.

Participants received 22 mg/m^2 of ridaforolimus administered orally for 5 consecutive days each week (2 days rest) in consecutive 28-day cycles for up to six months. Eligible participants could receive additional treatment in an extension phase of the study.

DLT defined using NCI-CTCAE v.4.0 as any of the following events occurring during the first 28-day cycle that were possibly, probably, or definitely study drug-related: Grade 4 neutropenia for ≥5 days; Grade 3-4 neutropenia associated with fever, antibiotics, or hospitalization for infection; Grade 4 thrombocytopenia for ≥5 days or requiring platelet transfusion; ≥Grade 3 hyperglycemia for ≥5 days despite management; ≥Grade 3 diarrhea for >24 hours despite management; ≥Grade 3 nausea or vomiting despite management; any other Grade ≥3 non-hematological toxicity persisting despite management (except alopecia, transient electrolyte abnormalities, transient Grade 3 liver function test elevations, and Grade 3 neurotoxicity for participants with baseline Grade 3 neurotoxicity); inability to complete DLT assessment period, interruption in dosing for >10 dosing days during DLT assessment period, or any delay in the initiation of the next cycle for >10 dosing days due to any related toxicity.

Participants who completed the first 28-day cycle of therapy with adequate drug exposure (>75% of planned study drug doses, exclusive of doses missed due to related toxicity), or who discontinued from the study due to a related DLT, were evaluable for DLT.

Participants received 22 mg/m^2 of ridaforolimus administered orally for 5 consecutive days each week (2 days rest) in consecutive 28-day cycles for up to six months. Eligible participants could receive additional treatment in an extension phase of the study.