for people ages 18 years and up (full criteria)
study started
estimated completion



Acute myeloid leukemia (AML) is one of the most aggressive blood cancers, with a very low survival rate and few options for participants who are unable to undergo intensive chemotherapy, the current standard of care. This study is to evaluate how safe lemzoparlimab is and how it moves within the body when used along with azacitidine and/or venetoclax in adult participants with acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS). Adverse events and maximum tolerated dose (MTD) of lemzoparlimab will be assessed. Lemzoparlimab (TJ011133) is being evaluated in combination with azacitidine and venetoclax for the treatment of acute myeloid leukemia (AML) and with azacitidine with/without venetoclax for myelodysplastic syndrome (MDS). Study doctors place the participants in 1 of 5 groups, called treatment arms. Each group receives a different treatment. Adult participants with a diagnosis of AML or MDS will be enrolled. Around 80 participants will be enrolled in the study in approximately 50 sites worldwide. Participants will receive lemzoparlimab (IV) once weekly (Q1W), venetoclax oral tablets once daily (QD) for 28 days (AML participants) or 14 days (MDS participants) and Azacitidine by SC or IV route QD for 7 days of each 28-day cycle. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests and checking for side effects.

Official Title

A Phase 1b Dose Escalation Study of Lemzoparlimab in Combination With Venetoclax and/or Azacitidine in Subjects With Acute Myeloid Leukemia (AML) or Myelodysplastic Syndrome (MDS)


Acute Myeloid Leukemia (AML) Myelodysplastic Syndrome (MDS) Lemzoparlimab TJ011133 ABBV-IMAB-TJC4 Venetoclax ABT-199 GDC-0199 VENCLEXTA VENCLYXTO Azacitidine Cancer Leukemia Leukemia, Myeloid Leukemia, Myeloid, Acute Preleukemia Myelodysplastic Syndromes Syndrome Lemzoparlimab + Azacitidine + Venetoclax in AML (Escalation) Lemzoparlimab + Azacitidine + Venetoclax in MDS (Escalation) Lemzoparlimab + Azacitidine in MDS (Escalation) Lemzoparlimab + Azacitidine + Venetoclax in AML (Expansion) Lemzoparlimab + Azacitidine + Venetoclax in MDS (Expansion)


You can join if…

Open to people ages 18 years and up

  • Documented confirmation of acute myeloid leukemia (AML) according to the World Health Organization (WHO) criteria, previously untreated [OR]
  • Documented diagnosis of previously untreated de novo myelodysplastic syndrome (MDS) according to the 2017 WHO classification with presence of < 20% bone marrow blasts per marrow biopsy/aspirate.
  • Participants with documented MDS must meet the following disease activity criteria:
  • Overall revised international prognostic scoring system (IPSS-R) score > 3 (intermediate, high, or very high);
  • Eastern cooperative oncology group (ECOG) performance status of 0 to 2;
  • Hematopoietic stem cell transplant (HSCT) ineligible, or participant who chooses not to undergo HSCT.
  • Participants with documented AML with adverse cytogenetic and/or molecular risk, and must be considered ineligible for induction therapy defined by the following:
  • >= 75 years of age; [OR]
  • >= 18 to 74 years of age with at least one of the following comorbidities:
  • Eastern cooperative oncology group (ECOG) performance status of 2 to 3;
  • Cardiac history of congestive heart failure requiring treatment or ejection fraction <= 50% or chronic stable angina;
  • Diffusion capacity of lung (DLCO) <= 65% or forced expiratory volume during the first second (FEV1) <= 65%;
  • Creatinine clearance >= 30 mL/min to < 45 mL/min;
  • Moderate hepatic impairment with total bilirubin > 1.5 to <= 3.0 × upper limit of normal (ULN);
  • Any other comorbidity that the physician judges to be incompatible with intensive chemotherapy or the participant declines to receive intensive chemotherapy.

You CAN'T join if...

  • Participants with documented AML with acute promyelocytic leukemia and considered eligible for induction therapy.
  • Participant with documented AML having prior diagnosis of:
  • Chronic myeloid leukemia with or without BCR-ABL1 translocation and AML with BCR-ABL1 translocation;
  • known active central nervous system involvement with AML.
  • Participants with documented MDS having prior diagnosis of:
  • Therapy-related MDS;
  • MDS evolving from a pre-existing myeloproliferative neoplasm (MPN);
  • MDS/MPN including chronic myelomonocytic leukemia, atypical chronic myeloid leukemia, juvenile myelomonocytic leukemia and unclassifiable MDS/MPN.
  • History of allogeneic HSCT or solid organ transplantation.
  • Previous exposure to azacitidine or venetoclax or anti-CD47 therapies.
  • History of an active malignancy within the past 2 years prior to Screening, with the exception of:
  • Adequately treated carcinoma in situ of the cervix uteri or carcinoma in situ of the breast;
  • Adequately treated basal cell carcinoma or localized squamous cell carcinoma of the skin;
  • Asymptomatic prostate cancer without known metastatic disease and with no requirement for therapy;
  • Previous malignancy confined and surgically resected (or treated with other modalities) with curative intent.
  • Conditions that could interfere with drug absorption including but not limited to short bowel syndrome.


  • University of California, Los Angeles /ID# 227752 not yet accepting patients
    Los Angeles California 90095 United States
  • Oregon Health and Science University /ID# 227121 not yet accepting patients
    Portland Oregon 97239 United States


accepting new patients
Start Date
Completion Date
Phase 1
Study Type
Last Updated