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  • Cancer Type: Malignant Hematology
  • Study Type: Treatment
  • NCT#: NCT05903274
  • Phase: Phase I
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  • Overview

    Study Title:

    A Phase 1 Open-Label, Dose-Escalation, Safety, and Tolerability Study of JSP191 as a Second-line Therapy in Subjects with Lower-Risk Myelodysplastic Syndrome (LR-MDS)


    An open-label, single-arm, dose-escalation study designed to determine the potential safety, efficacy, maximum tolerated dose (MTD) or optimal biologic dose (OBD), and recommended phase 2 dose (RP2D) of JSP191 (briquilimab) monotherapy for LR-MDS subjects with documented cytopenia (red blood cell-transfusion dependent, thrombocytopenia, and/or neutropenia).


    The primary objectives of this study are to: - Evaluate the safety, tolerability, and dose-limiting toxicities (DLTs) of JSP191 in multiple doses - Define the MTD or optimal biologic dose (OBD) of JSP191 in subjects with LR-MDS

  • Treatments


    Therapy (NOS)


    JSP191 ()

  • Inclusion Criteria

      Inclusion Criteria:
    • Participants must be 18 years of age or older
    • MDS with IPSS-R very low, low, or intermediate risk features
    • Symptomatic cytopenias
    • Women of childbearing potential (WOCBP) must agree to use an oral or implanted contraceptive, a double-barrier method of birth control, or an intrauterine device upon enrollment and through 3 months after receiving the last dose of JSP191
    • Women not of childbearing potential must be post-menopausal (no menstrual period for a minimum of 12 months) or surgically sterilized and have a negative serum pregnancy test upon study entry
    • Male particiipants must be surgically sterile or willing to use contraception upon enrollment and through 3 months after receiving the last dose of JSP191
    • Must be willing and able to provide informed consent
  • Exclusion Criteria

      Exclusion Criteria:
    • Anemia secondary to iron deficiency, vitamin B12 deficiency, or folate deficiency
    • Prior allogeneic or autologous stem cell transplant
    • Known history of human immunodeficiency virus (HIV) (no laboratory testing is required), or active infection with hepatitis B or hepatitis C
    • Pregnant women or women who are nursing and do not wish to discontinue breastfeeding
    • Any other medical condition that, in the opinion of the Investigator, could pose a significant safety risk to the subject or jeopardize the integrity of the study
    • Participants who, in the opinion of the Investigator, may not be able to comply with the requirements of the study

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