CI

At a glance

ClinicalIndex Comparison Record
Phase 3Recruiting· 600 target
Drug / intervention
Navtemadlin +2 moredrug
Likely dose
Not stated in record
Key inclusion· 6
  • Confirmed diagnosis of PMF, post-PV MF, or post-ET MF per WHO criteria
  • High, Intermediate-1, or Intermediate-2 risk IPSS (ruxolitinib alone period)
  • ECOG performance status 0 to 2
  • JAK-inhibitor treatment naive
Key exclusion· 6
  • Prior splenectomy
  • Splenic irradiation within 3 months prior to first dose
  • Prior BCL-XL, BET, MDM2, PI3K, PIM, or XPO1 inhibitors or p53-directed therapy
  • Eligible for bone marrow transplant

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT06479135
NCT06479135Phase 3RecruitingHigh MomentumUpdated 9mo ago

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

Kartos Therapeutics, Inc.·interventional·Posted Jun 28, 2024·Updated Sep 25, 2025

In Brief

A Phase 3 clinical trial evaluating Navtemadlin, Navtemadlin placebo, and 1 other intervention for Myelofibrosis and 4 related conditions. Currently recruiting, targeting 600 participants across 215 sites in 19 countries.

Signals

Enrolling ahead of pace

Detailed Summary

This clinical trial is evaluating whether addition of navtemadlin to ruxolitinib treatment will provide more clinical benefit than ruxolitinib alone for patients with Myelofibrosis who have a suboptimal response to ruxolitinib treatment alone. Subjects will start by receiving ruxolitinib alone in the run-in period. Those who demostrate a suboptimal response from ruxolitinib alone will then be randomized 2:1 to receive navtemadlin or navtemadlin placebo as add-on treatment to their ongoing ruxolitinib. Randomized means that subjects will be assigned to a group by chance, like a flip of a coin. The study is blinded, meaning the subjects, doctors, central endpoint assessors and sponsor will not know which add on treatment (navtemadlin or navtemadlin placebo) the subject is receiving.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesAustralia, Austria, Belgium, Croatia, Czechia, France, Georgia, Germany, Greece, Hungary, Italy, Poland, Portugal, Romania, Serbia, South Korea, Spain, United Kingdom, United States
Collaborators--

Timeline

Phase 3Recruiting
20252026202720282029
First PostedJun 28, 2024
Enrollment StartJun 3, 2024
Primary CompletionDec 31, 2026
Study CompletionDec 31, 2028
TodayJul 2, 2026
Enrollment to primary: 2.6 yearsPosted 2.0 years agoPrimary completion in 6 months

Interventions

Navtemadlindrug

Navtemadlin is an investigational MDM2 inhibitor

Navtemadlin placebodrug

Navtemadlin placebo

Ruxolitinibdrug

Ruxolitinib is a janus kinase 1/2 inhibitor