This is a multicenter, randomized, double-blind, placebo-controlled Phase 3 study to compare the progression free survival, overall response rate (ORR) and safety of participants treated with lenvatinib 24 mg by continuous once daily oral dosing versus placebo. The study is conducted in 3 phases: a Prerandomization Phase (screening and baseline period), a Randomization Phase (double-blind treatment period), and an Extension Phase (Optional Open Label (OOL) Lenvatinib Treatment Period and a follow-up period).
Randomization Phase: Participants will receive blinded study drug (lenvatinib/placebo) in 2:1 ratio until documentation of disease progression (confirmed by independent imaging review), development of unacceptable toxicity, or withdrawal of consent. After having completed the primary analysis, subjects treated with lenvatinib who have not experienced disease progression may request to continue open label lenvatinib at the same dose, according to the clinical judgment of the investigator. Participants who discontinue treatment for any reason other than disease progression will be followed in the Randomization Phase until disease progression or start of another anticancer treatment; these participants then enter the Extension Phase for survival follow-up. Extension Phase: Participants in the placebo arm who have disease progression confirmed by IIR could request to enter the OOL Lenvatinib Treatment Period and receive lenvatinib treatment. Participants will receive lenvatinib treatment until disease progression (investigator's assessment), development of intolerable toxicity, or withdrawal of consent. Participants who had disease progression during the Randomization Phase and did not enter the OOL Lenvatinib Treatment Period and all participants who discontinued lenvatinib treatment in the OOL Lenvatinib Treatment Period will enter the follow-up period. Participants will be followed for survival, and all anticancer treatments will be recorded until the time of death.
Lenvatinib 24 mg (two 10-mg and one 4-mg lenvatinib matched capsules) taken orally once daily, continuously. Dose interruptions or reductions were allowed for subjects who experienced treatment-related toxicity.
Matching placebo (two 10-mg and one 4-mg lenvatinib matched capsules) taken orally once daily, continuously.
Lenvatinib 20 mg (two 10-mg capsules) taken orally once daily, continuously. Dose interruptions or reductions were allowed for subjects who experienced treatment-related toxicity. The dose of lenvatinib during the OOL Lenvatinib Treatment Period was 24 mg once daily from 03 Oct 2011 until 15 Feb 2013. The dose was lowered at the request of the Data Monitoring Committee to 20 mg on 16 Feb 2013. Thus, more subjects were treated with 24 mg starting dose and the treatment duration was longer for these participants than those whose starting dose was 20 mg.
Rosario, Argentina
San Miguel de Tucumán, Argentina
San Salvador de Jujuy, Argentina