Phase I/II Clinical Trial of Axatilimab, a CSF1R Monoclonal Antibody, in Combination With Ruxolitinib as Therapy for Patients With Myelofibrosis (MF) and Chronic Myelomonocytic Leukemia (CMML)

Trial statusRecruiting
Trial phasePhase 1, Phase 2
Trial typeInterventional
Biological sexAll
Age18+
SponsorM.D. Anderson Cancer Center

About this trial

* To find the recommended dose of axatilimab given alone and in combination with ruxolitinib in patients with MF and CMML. * To learn if axatilimab given in combination with ruxolitinib can help to control MF and CMML.

Eligibility criteria

Qualifiers

Age .18 years as MF and CMML are very rare diseases in the pediatric population.

Phase 1 dose escalation (Cohort A and B): at least 1 prior therapy for MF or with suboptimal response after at least 3 months of therapy with a JAK inhibitor.

Diagnosis of CMML refractory to treatment with hydroxyurea (for patients with proliferative CMML defined as WBC.13x109/L) or at least 4 cycles of treatment with hypomethylating agent, with relapse/progression after any number of cycles of hypomethylating agent therapy or who are intolerant of treatment with either therapy. Patients may have received prior therapy with other investigational agents or cytotoxic regimens.

ECOG performance status ≤2

Disqualifiers

Patients who are currently receiving treatment for a malignancy (not including basal cell carcinoma, nonmelanoma skin cancer, cervical carcinoma in situ, early stage breast cancer or localized prostate cancer treated with hormone therapy). Patients with history of other cancers should be free of disease for at least 2 years prior to the Screening Visit or not requiring active treatment at the time of enrollment.

Patients who are receiving any other investigational agents or with prior CSF1-R inhibitor therapy.

Active, uncontrolled bacterial, fungal, parasitic, or viral infection. Infections are considered controlled if appropriate therapy has been initiated and, at the time of screening, there is no evidence of infection worsening, such as hemodynamic instability attributable to sepsis, new symptoms, worsening physical signs, or radiographic findings attributable to infection.

Patients with evidence of active or latent tuberculosis. Prior to enrollment, patients should be evaluated for tuberculosis risk factors, and those at higher risk should be tested for latent infection. Risk factors include, but are not limited to, prior residence in or travel to countries with a high prevalence of tuberculosis, close contact with a person with active tuberculosis, and a history of active or latent tuberculosis where an adequate course of treatment cannot be confirmed.

Trial design

Treatments tested in this trial

  • Axatilimab (SNDX-6352)
  • Ruxolitinib

Treatment groups

66 Participants
are divided into 1 treatment group

Sponsors and collaborators