A Randomized, Double-Blind, Placebo-Controlled Study of the PI3Kδ Inhibitor Parsaclisib Plus Ruxolitinib in Participants With Myelofibrosis Who Have Suboptimal Response to Ruxolitinib
A Randomized, Double-Blind, Placebo-Controlled Study of the PI3Kδ Inhibitor Parsaclisib Plus Ruxolitinib in Participants With Myelofibrosis Who Have Suboptimal Response to Ruxolitinib
The purpose of the study is to compare the efficacy and safety of parsaclisib when combined with ruxolitinb versus placebo combined with ruxolitinib in participants with myelofibrosis who have suboptimal response while receiving ruxolitinib monotherapy.
Prospective participants must be on stable doses of ruxolitinib ranging from 5 mg BID to 25 mg BID and will have been on that dose for at least the last 8 weeks prior to Day 1. At least 3 months duration of prior ruxolitinib is required. Participants must meet Protocol-defined criteria for suboptimal response to ruxolitinib monotherapy. After participants have been determined to be eligible for the study and completed the baseline symptom diary assessment for 7 days, they will be randomized to 1 of 2 treatment groups, with stratification for platelet count (≥ 100 × 10^9/L vs 50 to < 100 × 10^9/L inclusive) and DIPSS risk category (high vs intermediate-2 vs intermediate-1).
Once a participant has completed the week 24 assessments, the participant's treatment assignment will then be unblinded and if found to be placebo, the participant will have the opportunity to crossover to begin receiving parsaclisib, together with continued ruxolitinib, as long as hematology parameters are adequate.
Inclusion Criteria:
Exclusion Criteria:
Berkeley, California 94704, United States
Clyde, North Carolina 28721, United States
Hefei, 230022, China
Tianjin, 510080, China
Wuhan, 430022, China
La Tronche, 38700, France
Paris, 75010, France
Bologna, 40138, Italy
Himeji-shi, 670-8540, Japan
Kitakyushu-shi, 807-8556, Japan
Lorenskog, 01478, Norway
Istanbul, 34214, Turkey (Türkiye)