IMM01+Azacitidine VS Placebo +Azacitidine in Patients With Newly Diagnosed Chronic Myelomonocytic Leukemia (CMML1-2)

ImmuneOnco Biopharmaceuticals

Status and phase: Enrolling; Phase 3

Conditions: Chronic Myelomonocytic Leukemia

Treatments: Drug: Placebo; Drug: Azacitidine; Drug: IMM01

Study type: Interventional

Funder types: Other

Identifiers

NCT06647862

IMM01-010

Details and patient eligibility

About

This study is a randomized, controlled, double-blind, multicenter, phase Ⅲ clinical study to evaluate the efficacy of IMM01(timdarpacept) in combination with azacitidine versus placebo in combination with azacitidine in patients with newly diagnosed chronic leukemia monocytic (CMML1-2).Primary endpoint are Complete remission rate and Overall survival.

Enrollment: 170 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Age ≥ 18 years old, regardless of gender;
• Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1.
• Life expectancy ≥ 12 weeks;
• Patients with CMML diagnosed according to WHO 2016 criteria, including CMML-1 and CMML-2;
• White blood cell count ≤ 13×10⁹/L before the first treatment with the study drug (hydroxyurea and leukapheresis are allowed, but not within 3 days prior to the first treatment with the study drug).
• Patients must be treatment-naïve to any hypomethylating agents (e.g., azacitidine, decitabine), chemotherapy or allogeneic stem cell transplant for CMML. Immunomodulators ( lenalidomide), immunosuppressants (antithymocyte globulin, cyclosporine), targeted agents (ruxolitinib), etc. are also excluded, as these agents are considered disease-modifying therapies. Note: During screening and study participation, subjects may continue oral corticosteroids for diseases other than CMML (e.g. asthma) at a stable daily dose equivalent to ≤ 10 mg prednisone. In addition, supportive care in the form of blood transfusions or growth factors is not considered prior therapy in this case and is permitted prior to and as needed during the study.

Exclusion criteria

• Previous treatment with anti-CD47 monoclonal antibody/SIRPα fusion protein;
• History of allogeneic stem cell transplant and other organ transplants; Patients who have undergone autologous haematopoietic stem cell transplant;
• Prior diagnosis of: therapy-related myelodysplastic syndrome(t-MDS); MDS evolved from a pre-existing myeloproliferative neoplasm (MPN) ;MDS/MPN including atypical chronic myeloid leukemia (aCML), juvenile myelomonocytic leukemia (JMML) and unclassifiable MDS/MPN. Patients positive for BCR-ABL fusion genes, PDGFRA, PDGFRB, and FGFR1 rearrangements need to be excluded;
• Current or history of central nervous system (CNS) leukemia, extramedullary leukemia, or myeloid sarcoma;
• Diagnosis of other malignant neoplasms within 3 years prior to the first dose. Exceptions: a. Radically treated cervical carcinoma in situ or non-melanoma skin cancer; b. a second primary cancer that has been curatively treated and has no recurrence within three years;

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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170 participants in 2 patient groups, including a placebo group

IMM01 in combination with azacitidine

Experimental group

Description:

One treatment cycle consists of 4 weeks (28 days). IMM01(timdarpacept) will be administered once weekly, and azacitidine will be administered from Day 1 to Day 7 of each cycle.

Treatment:

Drug: IMM01

Drug: Azacitidine

placebo in combination with azacitidine

Placebo Comparator group

Description:

One treatment cycle consists of 4 weeks (28 days). Placebo will be administered once weekly, and azacitidine will be administered on days 1-7 of each cycle.

Treatment:

Drug: Azacitidine

Drug: Placebo