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

A Phase 1, Open-Label, Multicenter Study of INCB160058 in Participants With Myeloproliferative Neoplasms

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06313593
Enrollment
37
Registered
2024-03-15
Start date
2024-08-08
Completion date
2028-10-09
Last updated
2026-08-12

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

Conditions

Myeloproliferative Neoplasms

Keywords

Myeloproliferative Neoplasms, INCB160058, Myelofibrosis

Brief summary

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

Interventions

Oral; Tablet

A standard disease-directed therapy will be administered according to Prescribing Information/SmPC.

Sponsors

Incyte Corporation
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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 for the monotherapy cohort, participants must have been previously treated with at least 1 JAK inhibitor for ≥ 12 weeks and resistant, refractory, intolerant to, or have lost response to JAK inhibitor treatment. * For the MF SubOpt R cohort: Therapeutic regimen prior to enrollment as defined in the protocol and unlikely to benefit from further monotherapy in the opinion of the investigator. * 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/

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with Dose Limiting Toxicities (DLTs)Up to 28 daysDose-limiting toxicity will be defined as the occurrence of any of the toxicities as per protocol.
Number of participants with Treatment-emergent Adverse Events (TEAEs)Up to 2 years and 30 daysDefined 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 TEAEs leading to dose modification or discontinuationUp to 2 years and 30 daysNumber of participants with TEAEs leading to dose modification or discontinuation.

Secondary

MeasureTime frameDescription
INCB160058 and a standard disease-directed therapy pharmacokinetic (PK) in PlasmaUp to Day 57INCB160058 and the protocol defined standard disease-directed therapy 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 yearsDefined 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 24Defined 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 yearsDefined 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 yearsDefined 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 24Defined 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 24Defined 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.

Countries

Canada, France, Germany, Italy, Norway, Switzerland, United Kingdom, United States

Contacts

STUDY_DIRECTORIncyte Medical

Incyte Corporation

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 13, 2026