AzTrials
AzTrials

Myeloproliferative NeoplasmsPhase 1NCT05936359

A Study to Evaluate INCA033989 Administered as a Monotherapy or in Combination With Ruxolitinib in Participants With Myeloproliferative Neoplasms

A Phase 1 study testing INCA033989 and Ruxolitinib in people with Myeloproliferative Neoplasms, run by Incyte Corporation at 28 sites in 9 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
Search all trials

Trial summary

This study is being conducted to evaluate the safety, tolerability, and dose-limiting toxicity (DLT) and determine the maximum tolerated dose (MTD) and/or recommended dose(s) for expansion (RDE) of INCA033989 administered as a monotherapy or in combination with ruxolitinib in participants with myeloproliferative… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Myeloproliferative Neoplasms
What is being tested?
INCA033989 and Ruxolitinib
Could I receive a placebo?
No, everyone receives an active treatment
How many people
160 participants
Where
28 sitesin 9 countries
Study dates
25 Sep 2023to 29 Feb 2028
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Life expectancy > 6 months.
  • Willingness to undergo a pretreatment and regular on-study BM biopsies and aspirates (as appropriate to disease).
  • Existing documentation from a qualified local laboratory of CALR exon-9 mutation.
  • Participants with MF and ET as defined in the protocol.

Who cannot join

  • Presence of any hematological malignancy other than ET, PMF, or post-ET MF.
  • Active invasive malignancy over the previous 2 years.
  • Active HBV/HCV, HIV.
  • History of clinically significant or uncontrolled cardiac disease.
  • Has undergone any prior allogenic or autologous stem-cell transplantation or such transplantation is planned.
  • Laboratory values outside the Protocol-defined ranges.
Show all 11Show fewer
  • Participants undergoing treatment with G-CSF, GM-CSF, or TPO-R agonists at any time within 4 weeks before the first dose of study treatment.
  • Prior history of major bleeding, or thrombosis within the last 3 months prior to study enrollment.
  • Any prior chemotherapy, immunomodulatory drug therapy, immunosuppressive therapy, biological therapy, endocrine therapy, targeted therapy, antibody, or hypomethylating agent used to treat the participant's disease within 5 half-lives or 28 days (whichever is shorter) before the first dose of study treatment.
  • For TGBs only: Undergoing treatment with a potent/strong inhibitor or inducer of CYP 3A4/5 within 14 days or 5 half-lives (whichever is longer) before the first dose of study treatment, or expected to receive such treatment during the study.
  • Other protocol-defined Inclusion/Exclusion Criteria may apply.

Trial locations and contacts

28 sites in 9 countries.

28 sites in 9 countries

Japan5 sites
  • National Cancer Center Hospital East

    Chiba-ken, 277-0882

  • Kagoshima University Hospital

    Kagoshima, 890-8520

  • Osaka Metropolitan University Hospital

    Osaka, 545-8586

  • Nippon Medical School Hospital

    Tokyo, 113-8603

  • Mie University Hospital

    Tsu, 514-0001

Other trials in Japan

Australia4 sites
  • Royal Adelaide Hospital

    Adelaide, South Australia, 05000

  • Royal Brisbane and Women'S Hospital

    Herston, Queensland, 04029

  • Peter Maccallum Cancer Centre

    Melbourne, Victoria, 03000

  • The Alfred Hospital

    Melbourne, Victoria, 03004

Other trials in Australia

France4 sites
  • Institut Bergonie

    Bordeaux, 33076

  • Chu Nimes

    Nîmes, 30029

  • Hospital Saint Louis

    Paris, 75010

  • Institut Gustave Roussy

    Villejuif, 94805

Other trials in France

Germany3 sites
  • University Medical Center Rwth Aachen

    Aachen, 52074

  • Universitatsklinikum Halle (Saale)

    Halle, 06120

  • Universitätsklinikum Ulm

    Ulm, 89081

Other trials in Germany

Italy3 sites
  • Aou Policlinico S. Orsola-Malpighi

    Bologna, 40138

  • Azienda Ospedaliero-Universitaria Careggi (Aouc)

    Florence, 50134

  • Fondazione Irccs Ca Granda Ospedale Maggiore

    Milan, 20122

Other trials in Italy

United Kingdom3 sites
  • Guys and St Thomas Nhs Foundation Trust

    London, SE1 9RT

  • The Christie Nhs Foundation Trust Uk

    Manchester, M20 4BV

  • University of Oxford

    Oxford, OX3 7LE

Other trials in United Kingdom

Canada2 sites
  • Hopital Maisonneuve-Rosemont, Montreal, Qc

    Montreal, Quebec, H1T 2M4

  • Princess Margaret Cancer Center

    Toronto, Ontario, M5G 2M9

Other trials in Canada

Denmark2 sites
  • Sjaellands Universitetshospital

    Roskilde, 04000

  • Vejle Hospital

    Vejle, 07100

Other trials in Denmark

Spain2 sites
  • Hospital Universitario 12 de Octubre

    Madrid, 28041

  • Hospital Universitari I Politecnic La Fe

    Valencia, 46026

Other trials in Spain

About this study

Official title: A Phase 1, Open-Label, Multicenter Study of INCA033989 Administered as a Monotherapy or in Combination With Ruxolitinib in Participants With Myeloproliferative Neoplasms

This study is being conducted to evaluate the safety, tolerability, and dose-limiting toxicity (DLT) and determine the maximum tolerated dose (MTD) and/or recommended dose(s) for expansion (RDE) of INCA033989 administered as a monotherapy or in combination with ruxolitinib in participants with myeloproliferative neoplasms.

Being tested
INCA033989, Ruxolitinib
Keywords
Myeloproliferative Neoplasms, Ruxolitinib, Myelofibrosis, Essential thrombocythemia, CALR mutation
Medical subject headings
Myeloproliferative Disorders, Primary Myelofibrosis, Thrombocythemia, Essential

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • INCA033989Drug

    INCA033989 will be administered at protocol defined dose.

  • RuxolitinibDrug

    Also called Jakafi

    Rux will be administered according to Prescribing Information/SmPC.

Study groups in NCT05936359
Study groupRoleWhat they receive
Part 1a Dose Escalation Cohort Disease Group A - with MFExperimentalINCA033989 will be administered at a protocol defined starting regimen in 28-day cycles as monotherapy to identify the maximum tolerated dose (MTD) and/or recommended dose for expansion (RDE[s]). Participants with myelofibrosis (MF) will enroll in this group.
Receives: Drug: INCA033989
Part 1a Dose Escalation Cohort Disease Group A - with ETExperimentalINCA033989 will be administered at a protocol defined starting regimen in 28-day cycles as monotherapy to identify the maximum tolerated dose (MTD) and/or recommended dose for expansion (RDE[s]). Participants with with essential thrombocythemia (ET) will enroll in this group.
Receives: Drug: INCA033989
Part 1a: Dose Escalation Cohort Disease Group B - with TGB-MF SubOpt RExperimentalINCA033989 will be administered at a protocol defined starting regimen in 28- day cycles and will allow for the evaluation of INCA033989 in combination with ruxolitinib to identify the maximum tolerated dose (MTD) and/or recommended dose for expansion (RDE[s]). Participants with myelofibrosis (MF) exhibiting suboptimal response (SubOpt R) will enroll in this group.
Receives: Drug: INCA033989; Drug: Ruxolitinib
Part 1b: Dose Expansion - with MFExperimentalINCA033989 will be administered as monotherapy at the RDE(s) identified during Part 1a. Participants with treatment group A (TGA) myelofibrosis MF will enroll in this group.
Receives: Drug: INCA033989
Part 1b: Dose Expansion - with TGB-MF SubOpt RExperimentalINCA033989 will be administered as an add-on therapy in combination with ruxolitinibat at the RDE(s) identified during Part 1a. Participants with treatment Group B (TGB) MF SubOpt R will enroll in this group.
Receives: Drug: INCA033989; Drug: Ruxolitinib
Part 1b: Dose Expansion - with ETExperimentalINCA033989 will be administered as monotherapy at the RDE(s) identified during Part 1a. Participants with treatment group A (TGA) essential thrombocythemia (ET) will enroll in this group.
Receives: Drug: INCA033989
Part 1c: Dose ExpansionExperimentalINCA033989 will be administered at the dose level found to exhibit an overall positive benefit/risk as monotherapy or as combination therapy with Ruxolitinib. Participants with myelofibrosis (MF) will enroll in this group. The participants enrolled in the monotherapy arm will be offered the option to crossover to combination therapy with ruxolitinib if a suboptimal response to monotherapy is observed after 12 weeks.
Receives: Drug: INCA033989; Drug: Ruxolitinib

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of participants with Dose Limiting Toxicities (DLTs)

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

    Measured: Up to 28 days

  2. Number of participants with Treatment-emergent Adverse Events (TEAEs)

    Defined as adverse events reported for the first time or worsening of a pre-existing event after first dose of study drug monotherapy and in combination with ruxolitinib

    Measured: Up to 3 years and 60 days

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

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

    Measured: Up to 3 years and 60 days

Secondary outcomes (14)
  1. Participants with MF: Response using the revised IWG-MRT and ELN response criteria for MF

    Defined as the percentage of participants with Response using the revised IWG-MRT and ELN response criteria.

    Measured: Up to 3 years and 60 days

  2. Participants With MF: Percentage of participants achieving spleen volume reduction as defined in the protocol

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

    Measured: Up to 3 years and 60 days

  3. Participants with MF with symptomatic anemia: Anemia Response

    For non transfusion-dependent (TD) participants: An Hb increase relative to baseline as defined in the protocol if non-TD at baseline. For TD participants: Achieving transfusion independency (TI) as defined in the protocol.

    Measured: Up to 3 years and 60 days

  4. Participants With ET: Response Rate

    Defined as the proportion of participants with Complete Response or Partial Response when treated with study drug.

    Measured: Up to 3 years and 60 days

  5. Participants With ET: Mean change from baseline of total symptom score (TSS)

    Mean change of TSS from baseline.

    Measured: Up to 3 years and 60 days

  6. Mean change in disease-related allele burden

    Mean change in disease-related allele burden.

    Measured: Up to 3 years and 60 days

  7. Pharmacokinetics Parameter: Cmax of INCA33989

    Defined as maximum observed plasma concentration of INCA33989.

    Measured: Up to 3 years and 60 days

  8. Pharmacokinetics Parameter: Tmax of INCA033989

    Defined as the time to reach the maximum plasma concentration of INCA33989.

    Measured: Up to 3 years and 60 days

  9. Pharmacokinetics Parameter: Cmin of INCA33989

    Defined as the minimum observed plasma concentration of INCA33989.

    Measured: Up to 3 years and 60 days

  10. Pharmacokinetics Parameter: AUC(0-t) of INCA33989

    Defined as the area under the concentration-time curve up to the last measurable concentration of INCA33989.

    Measured: Up to 3 years and 60 days

  11. Pharmacokinetics Parameter: AUC 0-∞ of INCA33989

    Defined as the area under the concentration-time curve from 0 to infinity of INCA33989.

    Measured: Up to 3 years and 60 days

  12. Pharmacokinetics Parameter: CL/F of INCA33989

    Defined as the apparent oral dose clearance of INCA33989.

    Measured: Up to 3 years and 60 days

  13. Pharmacokinetics Parameter: Vz/F of INCA33989

    Defined as the apparent oral dose volume of distribution of INCA33989.

    Measured: Up to 3 years and 60 days

  14. Pharmacokinetics Parameter: t1/2 of INCA33989

    Defined as the apparent terminal phase disposition half-life of INCA33989.

    Measured: Up to 3 years and 60 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Jul 2023
  2. Study start25 Sep 2023
  3. Primary completion29 Feb 2028 (estimated)
  4. Study completion29 Feb 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
160 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05936359
Sponsor's protocol ID
INCA 33989-101
Other IDs
2022-502514-86-00
Status last verified
Aug 2026
First submitted
21 Jun 2023
Last updated
10 Aug 2026
Results posted
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing INCA033989 and Ruxolitinib in people with Myeloproliferative Neoplasms, run by Incyte Corporation at 28 sites in 9 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 10 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 28 sites in Japan, Australia, France, Germany, Italy and 4 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of participants with Dose Limiting Toxicities (DLTs) (time frame: Up to 28 days). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Aug 2026.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in