Overview

This is an open-label, single arm study to evaluate the safety and tolerability of treatment with CT0594CP CAR-T Cells in patients with relapsed and/or refractory multiple myeloma or Plasma Cell Leukemia

Eligibility

Inclusion Criteria:

1. Patients and legally acceptable representative must have voluntarily signed ICF and willing to complete the study procedure, after fully understanding of the study.
2. Age ≥ 18 years and ≤ 75 years, male or female.
3. The patients, with MM or Plasma Cell Leukemia, who have received regimens and have medical records in the past.
4. According to the IMWG consensus for relapsed and/or refractory multiple myeloma or Plasma Cell Leukemia, the disease is in a progressive state
5. Subjects should have measurable disease. 1） Serum M protein ≥ 5 g / L; 2） 24-hour urinary M-protein ≥ 200 mg; 3） The serum free light chain (sFLC) ratio was abnormal and the involved FLC ≥ 100mg/L in patients with light chain multiple myeloma whose serum or urinary M protein levels did not meet the assessable criteria.

        4） Circulating plasma cells ≥2% 6. Expected survival > 12 weeks. 7. Eastern Cooperative
        Oncology Group (ECOG) scores 0-1. 8. Subjects should have adequate function in hemostatic
        and liver and kidney. 9. Women of childbearing age must undergo a serum pregnancy test with
        negative results at screening and before lymphodepletion and be willing to use an effective
        and reliable method of contraception for at least 1 year after study treatment. All female
        subjects are prohibited from egg donation within 1 year after study treatment.
        10. Men must be willing to use an effective and reliable method of contraception for at
        least 1 year after study treatment if they have sexual activity with women of childbearing
        potential. All male subjects are prohibited from sperm donation within 1 year after study
        treatment .
        Exclusion Criteria:
          1. Pregnant or lactating women.
          2. Subjects positive for any following tests: human immunodeficiency virus (HIV)
             antibody, Treponema pallidum (syphilis) antibody, CMV（IgM），EBV;
          3. Active hepatitis B and/or active hepatitis C (HCV RNA positive); Those who are
             positive for hepatitis B surface antigen and/or core antibodies but whose HBV-DNA test
             is within normal limits may be enrolled.
          4. Subjects with any uncontrolled active infection (Except for prophylactic treatment).
          5. Subjects with AEs from previous treatment that have not recovered to Common
             Terminology Criteria for Adverse Events (CTCAE) ≤ 1, excluding hair loss and other
             events that the treating physician considers as tolerable.
          6. Subjects who have received autologous BCMA CAR-T therapy
          7. Subjects who have received allogeneic stem cell transplantation for MM.
          8. Subjects who have received autologous stem cell transplantation less than 12 weeks
             before ICF.
          9. Subjects who have received any anti-MM treatment 14 days before ICF; the subjects are
             eligible to participate in the study regardless of the radiotherapy end date if the
             radiation area less than 5% of whole body.
         10. Subjects who have received systemic glucocorticoids within 7 days before infusion,
             except inhaled steroids.
         11. Subjects who have been received live attenuated vaccine within 8 weeks or inactivated
             vaccine within 4 weeks before lymphodepletion.
         12. Subjects have severe allergy history.
         13. Subjects who have any uncontrolled disease conditions within 6 months prior to the
             screening.
         14. LVEF < 50%
         15. Blood oxygen saturation that can only be maintained at > 95% by oxygen inhalation.
         16. Subjects known to have active autoimmune diseases including but not limited to
             psoriasis, rheumatoid arthritis and other conditions that require long-term
             immunosuppressive therapy.
         17. Subjects with malignant tumors that have not been cured in the past 5 years or at the
             same time, except for very low malignant tumors.
         18. Subjects who have central nervous system (CNS) metastases or symptomatic CNS
             involvement.
         19. Subjects who are unable or unwilling to comply with the requirements of clinical trial
             or other reasons that are not suitable for participating in the clinical trial.
         20. Subjects who have received major surgery 2 weeks prior to the screening or plan to
             receive major surgery within 4 weeks after study treatment (excluding cataract and
             other local anesthesia).