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Study of Navtemadlin Add-on to Ruxolitinib in JAK Inhibitor-Naïve Patients with Myelofibrosis Who Have a Suboptimal Response to Ruxolitinib

Phase 3
Recruiting
Conditions
Myelofibrosis
Post-ET Myelofibrosis
Primary Myelofibrosis
Post-PV MF
MF
Interventions
Registration Number
NCT06479135
Lead Sponsor
Kartos Therapeutics, Inc.
Brief 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.

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
600
Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Arm 1NavtemadlinNavtemadlin administered orally once daily on Days 1-7, off treatment on Days 8-28, in 28-day treatment cycles. Ruxolitinib administered orally twice a day.
Arm 2Navtemadlin placeboNavtemadlin placebo administered orally once daily on Days 1-7, off treatment on Days 8-28, in 28-day treatment cycles. Ruxolitinib administered orally twice a day.
Arm 1RuxolitinibNavtemadlin administered orally once daily on Days 1-7, off treatment on Days 8-28, in 28-day treatment cycles. Ruxolitinib administered orally twice a day.
Arm 2RuxolitinibNavtemadlin placebo administered orally once daily on Days 1-7, off treatment on Days 8-28, in 28-day treatment cycles. Ruxolitinib administered orally twice a day.
Primary Outcome Measures
NameTimeMethod
To compare total symptom score reduction (TSS50) between Arm 1 and Arm 224 weeks

The proportion of subjects in each arm with a TSS50 by the Myelofibrosis Symptom Assessment Form (MFSAF) v4.0 24 weeks after start of the randomized period

To compare spleen volume reduction (SVR35) between Arm 1 and Arm 224 weeks

The proportion of subjects in each arm with SVR35 by MRI/CT scan (central review) 24 weeks after start of the randomized period

Secondary Outcome Measures
NameTimeMethod
To compare time to progression between Arm 1 and Arm 2Up to 8 years

Time to progression or death from any cause in subjects randomized to each arm

To compare overall survival (OS) between Arm 1 and Arm 2Up to 8 years

Time to death from any cause in subjects randomized to each arm

Trial Locations

Locations (79)

Rocky Mountain Cancer Centers - Aurora

🇺🇸

Aurora, Colorado, United States

Medical Oncology Hematology Consultants, PA

🇺🇸

Newark, Delaware, United States

Mission Cancer + Blood

🇺🇸

Des Moines, Iowa, United States

Norton Cancer Institute

🇺🇸

Louisville, Kentucky, United States

Mary Bird Perkins Cancer Center

🇺🇸

Baton Rouge, Louisiana, United States

The Center for Cancer and Blood Disorders

🇺🇸

Bethesda, Maryland, United States

Dana Farber Cancer Institute

🇺🇸

Boston, Massachusetts, United States

Nebraska Hematology - Oncology, P.C.

🇺🇸

Lincoln, Nebraska, United States

Montefiore Einstein Comprehensive Cancer Center

🇺🇸

Bronx, New York, United States

Brookdale University Hospital and Medical Center

🇺🇸

Brooklyn, New York, United States

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Rocky Mountain Cancer Centers - Aurora
🇺🇸Aurora, Colorado, United States

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