MedPath

A Study to Evaluate the Safety, Tolerability of INCB160058 in Participants With Myeloproliferative Neoplasms

Phase 1
Recruiting
Conditions
Myeloproliferative Neoplasms
Interventions
Registration Number
NCT06313593
Lead Sponsor
Incyte Corporation
Brief Summary

This study is being conducted to assess the Safety, Tolerability, and Pharmacokinetics of INCB160058 in Participants With Myeloproliferative Neoplasms.

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
144
Inclusion Criteria
  • Age ≥ 18 years
  • MF: Intermediate-1 or higher risk PMF, post-PV MF, or post-ET MF with evidence of minimum burden of disease based on splenomegaly and previously treated with at least 1 JAK inhibitor for ≥ 12 weeks and resistant, refractory, intolerant to, or have lost response to JAK inhibitor treatment.
  • PV: Confirmed diagnosis of PV and previously treated with at least 1 prior standard cytoreductive therapy and are resistant, refractory, intolerant to, or have lost response to treatment.
  • ET: Confirmed diagnosis of high-risk ET as defined in the protocol and previously treated with at least 1 prior standard cytoreductive therapy and are resistant, refractory, intolerant to, or have lost response to treatment.
  • Life expectancy > 6 months.
  • Willingness to undergo a pretreatment and regular on-study bone marrow biopsies and aspirations (as appropriate to disease).
  • Existing documentation of JAK2V617F mutation from a qualified local laboratory.
Exclusion Criteria
  • Presence of a hematological malignancy requiring treatment, other than PMF, post-PV MF, post-ET MF, PV, or ET.
  • Prior history of major bleeding or thrombosis within the 3 months prior to study enrollment.
  • Participants with abnormal hematologic, hepatic, or renal function based on laboratory evaluation.
  • Has undergone prior allogenic or autologous stem-cell transplantation or allogenic stem-cell transplantation is planned
  • Active invasive malignancy.
  • Significant concurrent, uncontrolled medical condition.
  • Acute or chronic HBV, active HCV or known HIV.
  • Any prior MPN-directed therapy within 5 half-lives or 28 days (whichever is shorter) before the first dose of study treatment.
  • Participants undergoing treatment with G-CSF or GM-CSF, romiplostim, or eltrombopag at any time within 4 weeks before the first dose of study treatment.

Other protocol-defined Inclusion/Exclusion Criteria may apply.

Study & Design

Study Type
INTERVENTIONAL
Study Design
SEQUENTIAL
Arm && Interventions
GroupInterventionDescription
Part 1 Dose Escalation - with MF, PV or ETINCB160058INCB160058 will be administered at a protocol defined starting regimen to identify the maximum tolerated dose (MTD) and/or recommended dose for expansion (RDE\[s\]). Participants with myelofibrosis (MF), polycythemia vera (PV) or essential thrombocythemia (ET) will enroll in this group.
Part 2 Dose Expansion - with MF, PV or ETINCB160058INCB160058 will be administered at the RDE(s) identified during Part 1. Participants with MF, PV or ET will enroll in this group.
Primary Outcome Measures
NameTimeMethod
Number of participants with TEAEs leading to dose modification or discontinuationUp to 2 years and 30 days

Number of participants with TEAEs leading to dose modification or discontinuation.

Number of participants with Treatment-emergent Adverse Events (TEAEs)Up to 2 years and 30 days

Defined as adverse events reported for the first time or worsening of a pre-existing event after first dose of study drug.

Number of participants with Dose Limiting Toxicities (DLTs)Up to 28 days

Dose-limiting toxicity will be defined as the occurrence of any of the toxicities as per protocol.

Secondary Outcome Measures
NameTimeMethod
INCB160058 pharmacokinetic (PK) in PlasmaUp to Day 57

INCB160058 concentration in plasma.

For participants with MF: Response using the revised IWG-MRT and ELN response criteria for MFWeek 12 and 24 and then every 24 weeks up to 2 years

Defined as the percentage of participants with Response using the revised International Working Group for Myelofibrosis Research and Treatment (IWG-MRT) and European LeukemiaNet (ELN) response criteria.

For participants with MF: Percentage of participants achieving spleen volume reduction as defined in the protocolWeek 12 and Week 24

Defined as percentage of participants with a protocol defined Spleen Volume Reduction.

For participants with PV: Response using revised IWG-MRT and ELN response criteria for PVWeek 12 and 24 and then every 24 weeks up to 2 years

Defined as the percentage of participants with Response using the revised International Working Group for Myelofibrosis Research and Treatment (IWG-MRT) and European LeukemiaNet (ELN) response criteria.

For participants with ET: Response using revised IWG-MRT and ELN response criteria for ETWeek 12 and 24 and then every 24 weeks up to 2 years

Defined as the percentage of participants with Response using the revised International Working Group for Myelofibrosis Research and Treatment (IWG-MRT) and European LeukemiaNet (ELN) response criteria.

For all participants: Percentage of participants achieving ≥ 50% reduction from baseline of total symptom score (TSS)Week 24

Defined as the percentage of participants achieving ≥ 50% reduction from baseline of TSS.

For all participants: Symptom improvement in TSS at Weeks 12 and 24 relative to baseline as measured by the Myeloproliferative Neoplasms Symptom Assessment Form (MPN-SAF) TSS.Week 12 and Week 24

Defined as the proportion of participants who achieve a protocol defined reduction in Total Symptomatic Score (TSS) relative to baseline as measured by the MPN-SAF TSS.

Trial Locations

Locations (10)

University of Pennsylvania Health System

🇺🇸

Philadelphia, Pennsylvania, United States

Stanford University

🇺🇸

Palo Alto, California, United States

Northwestern University

🇺🇸

Chicago, Illinois, United States

The University of Kansas Cancer Center Kucc University of Kansas Clinical Research Center

🇺🇸

Fairway, Kansas, United States

Dana Farber Cancer Institute

🇺🇸

Boston, Massachusetts, United States

Icahn School of Medicine At Mount Sinai

🇺🇸

New York, New York, United States

Sloan Kettering Institute For Cancer Research

🇺🇸

New York, New York, United States

Oregon Health & Science University

🇺🇸

Portland, Oregon, United States

Vanderbilt-Ingram Cancer Center

🇺🇸

Nashville, Tennessee, United States

Md Anderson Cancer Center

🇺🇸

Houston, Texas, United States

© Copyright 2025. All Rights Reserved by MedPath