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RecruitingLast updated: 22 January 2025

POIESIS: This study is recruiting people with myelofibrosis to see if a combination of two targeted therapy drugs is more beneficial than oneA Phase 3, Randomized, Double-blind, Add-on Study Evaluating the Safety and Efficacy of Navtemadlin Plus Ruxolitinib Vs Placebo Plus Ruxolitinib in JAK Inhibitor-Naïve Patients with Myelofibrosis Who Have a Suboptimal Response to Ruxolitinib

Clinical summary

Summary

To be eligible for this study you need to be diagnosed with myelofibrosis (MF), that is either PMF, post-PV MF, or post-ET MF, and you can't have had any prior treatment with a janus kinase (JAK) inhibitor.

Eligible participants will start by receiving the targeted therapy Ruxolitinib alone during the run-in period. Ruxolitinib is a JAK 1/2 inhibitor and is given orally twice a day.

Those who demonstrate a sub-optimal response from Ruxolitinib alone will then be randomly allocated (2:1) to receive Navtemadlin targeted therapy or a Navtemadlin placebo as an add-on treatment to their ongoing Ruxolitinib. Navtemadlin is an investigational MDM2 inhibitor given orally once daily on Days 1-7 of a 28-day cycle.

 

Conditions

This trial is treating patients with myelofibrosis

Cancer

Blood Cancers Haematological

Age

People18+

Phase

III

Trial Acronym

POIESIS

More information

Trial Identifiers

Use the hyperlinks, where available to access additional clinical trial information.

Trial sponsor

Kartos Therapeutics, Inc.

Scientific Title

A Phase 3, Randomized, Double-blind, Add-on Study Evaluating the Safety and Efficacy of Navtemadlin Plus Ruxolitinib Vs Placebo Plus Ruxolitinib in JAK Inhibitor-Naïve Patients with Myelofibrosis Who Have a Suboptimal Response to Ruxolitinib

Eligibility

Inclusion

Inclusion Criteria for Ruxolitinib Alone Period:

  • Confirmed diagnosis of PMF, post-PV MF, or post-ET MF, as assessed by the treating physician according to the World Health Organization (WHO) criteria
  • High, Intermediate-1, Intermediate-2 risk category International Prognosis System Score (IPSS)
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2
  • JAK-inhibitor treatment naive

Inclusion Criteria for Randomized Period:

  • PMF, post-PV MF, or post-ET MF that is TP53WT as assessed by central testing
  • ECOG performance status of 0 to 2
  • Treatment with a stable dose of ruxolitinib
  • Suboptimal response to run-in ruxolitinib treatment

Exclusion

Exclusion Criteria for Ruxolitinib Alone Period:

  • Prior Splenectomy
  • Splenic irradiation within 3 months prior to the first dose
  • Prior BCL-XL, BET, MDM2, PI3K, PIM, or XPO1 inhibitors therapy or p53-directed therapy
  • Eligible for Bone Marrow Transplant
  • Peripheral blood or bone marrow blast count ≥ 10 percent

Exclusion Criteria for Randomized Period:

  • Elevated white blood cell count that doubles (or more) during ruxolitinib treatment and exceeds 50 × 10^9/L
  • Peripheral blood or bone marrow blast count ≥ 10 percent

Inclusion

  • You are able to swallow medication by mouth.

Exclusion

  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

There may be additional criteria to what is listed here, speak to your doctor to confirm whether this trial is right for you.

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Recruiting hospitals

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