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A phase 3 study of parsaclisib plus ruxolitinib in patients with myelofibrosis

A Randomized, Double-Blind, Placebo-Controlled Study of the PI3Kd Inhibitor Parsaclisib Plus Ruxolitinib in Participants With Myelofibrosis Who Have Suboptimal Response to Ruxolitinib - LIMBER-304

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2020-003415-98-DE
Enrollment
212
Registered
2020-12-17
Start date
2021-06-21
Completion date
Unknown
Last updated
2025-03-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

myelofibrosis MedDRA version: 20.0 Level: PT Classification code 10028537 Term: Myelofibrosis System Organ Class: 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps)

Interventions

Product Name: parsaclisib Product Code: INCB050465 Pharmaceutical Form: Tablet INN or Proposed INN: parsaclisib CAS Number: 1426698-88-5 Current Sponsor code: INCB050465 Other descriptive name: PARSAC

Sponsors

Incyte Corporation
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Men and women aged 18 years or older; 2. Diagnosis of PMF, PPV-MF, or PET-MF; 3. DIPSS risk category of intermediate-1, intermediate-2, or high; 4. Treated with ruxolitinib for = 3 months with a stable dose for at least the last 8 weeks prior to Day 1; 5. Evidence of suboptimal response to ruxolitinib For the complete list of inclusion criteria please refer to the protocol, section 5.1 Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 76 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 136

Exclusion criteria

Exclusion criteria: 1. Prior therapy with any drug that inhibits PI3K; 2. Use of experimental drug therapy for MF or any other standard drug used for MF (whether for treatment of MF or another indication), with the exception of ruxolitinib, within 3 months of starting study drug, and/or lack of recovery from all toxicities from previous therapy (except ruxolitinib) to Grade 1 or better. 3. Inability to swallow food or any condition of the upper gastrointestinal tract that precludes administration of oral medications. 4. Recent history of inadequate bone marrow reserve. For the complete list of exclusion criteria please refer to the protocol, section 5.2

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate and compare the efficacy of parsaclisib plus ruxolitinib versus placebo plus ruxolitinib on spleen volume at Week 24.;Secondary Objective: * To evaluate and compare the effect of parsaclisib plus ruxolitinib versus placebo plus ruxolitinib on participant reports of MF symptoms. * To evaluate and compare the effect of parsaclisib plus ruxolitinib versus placebo plus ruxolitinib with respect to OS. * To evaluate and compare the safety and tolerability of parsaclisib plus ruxolitinib versus placebo plus ruxolitinib;Primary end point(s): Proportion of participants achieving = 25% reduction in spleen volume from baseline to Week 24 as measured by MRI (or CT scan in applicable participants).;Timepoint(s) of evaluation of this end point: Week 24

Secondary

MeasureTime frame
Secondary end point(s): * Proportion of participants who have a = 50% reduction in TSS from baseline to Week 24 as measured by the MFSAF v4.0 diary * Change in TSS from baseline to Week 24 as measured by the MFSAF v4.0 diary. * Time to the first = 50% reduction in TSS as measured by the MFSAF v4.0 diary * OS determined from the date of randomization until death due to any cause. * Safety and tolerability ;Timepoint(s) of evaluation of this end point: * Proportion of participants with = 50% reduction in TSS: week 24 * Change in TSS: week 24 * Time to the first = 50% reduction in TSS: * OS: throughout the study * Safety and tolerability: throughout the study

Countries

Austria, Belgium, China, Finland, France, Germany, Hungary, Israel, Italy, Japan, Korea, Republic of, Norway, Poland, Romania, Spain, Taiwan, Turkey, United Kingdom, United States

Contacts

Public ContactClinical Trial Information

Incyte Corporation

RA@incyte.com+1302498 6700

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026