A Study of a Fully Human BCMA-targeting CAR (CT103A) Combined With Selinexor in Patients With Relapsed/Refractory Extramedullary Multiple Myeloma

  • STATUS
    Recruiting
  • End date
    Dec 31, 2023
  • participants needed
    20
  • sponsor
    Chunrui Li
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Updated on 5 June 2022
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Summary

This study is a single-center, open Phase I study, to observe the effectiveness and safety of CT103A combined with different doses of Selinexor in patients with relapsed/refractory extramedullary multiple myeloma, and the pharmacokinetics of Selinexor and CT103A Kinetic and pharmacodynamic characteristics.

Description

In this study, two dose groups of 20 mg/week and 40 mg/week will be set for Selinexor, and the dose of CT103A is 1.0×106 cells/Kg. Subjects in all dose groups will firstly receive a single dose infusion of CT103A, at least 1 month post infusion and platelet recovery to ≥50×109/L. Then subjects began to take Selinexor once a week for one year. Each dose group level will include 8-10 subjects, and a total of 16-20 subjects are expected to be enrolled.

Details
Condition Extramedullary Multiple Myeloma
Treatment Selinexor, CT103A
Clinical Study IdentifierNCT05201118
SponsorChunrui Li
Last Modified on5 June 2022

Eligibility

 Yes No Not Sure

Inclusion Criteria

Subjects must satisfy all the following criteria to be enrolled in the study
age ≥18 years old, male or female
Subjects with diagnosed relapsed or refractory extramedullary multiple myeloma according to IMWG criteria and have had at least 3 prior lines of therapy
Evidence of cell membrane BCMA expression, as determined by a validated immunohistochemistry (IHC) or flow cytometry of tumor tissue(e.g., bone marrow biopsies, or plasmacytoma)
Subjects with extramedullary myeloma require extramedullary lesions with a maximum diameter of ≥2cm
ECOG score is ≤ 2
Estimated life expectancy ≥ 12 weeks
Subjects should have adequate organ function
Absolute neutrophil count (ANC) ≥1×10^9 /L; absolute lymphocyte count (ALC) ≥0.3×10^9 /L; platelets ≥50×10^9 /L; hemoglobin ≥60 g/L
Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5×upper limit of normal (ULN); total serum bilirubin ≤ 1.5×ULN
Creatinine clearance rate (CrCl) calculated according to Cockcroft-Gault formula ≥ 40 ml/min
Fibrinogen ≥ 1.0 g/L; activated partial thromboplastin time (APTT) ≤ 1.5×ULN, prothrombin time (PT) ≤1.5×ULN
SpO2 > 91%
Left ventricular ejection fraction (LVEF) ≥ 50%. 8. The subject and his/her spouse agree to use an effective contraceptive tool or medication (excluding safety period contraception) from the date of the subject's informed consent to one year post CAR T cell infusion
Subject must sign the informed consent form approved by the ethics board in person before starting any screening procedure

Exclusion Criteria

The presence of any of the following will exclude a subject from enrollment
Subjects who are known to be resistant to Selinexor
Subjects who need to use immunosuppressive agents for a long time due to graft-versus-host disease (GVHD) or autoimmune diseases
Subjects have received any anti-cancer treatment as follows: monoclonal antibody for treating multiple myeloma within 21 days before leukapheresis, or cytotoxic therapy or proteasome inhibitors within 14 days before leukapheresis, or immunomodulatory agents within 7 days before leukapheresis, or anti-tumor treatments other than those listed above within 30 days before leukapheresis
Subjects who were receiving a used therapeutic dose of corticosteroid treatment (defined as prednisone or equivalent > 20mg) within 7 days prior to screening, except for physiological alternatives, inhalation, or topical use
Subjects with hypertension that cannot be controlled by medication
Subjects with serious heart disease: including but not limited to unstable angina, myocardial infarction (within 6 months prior to screening), congestive heart failure (NYHA classification ≥III), and severe arrhythmias
Subjects with systemic diseases that the investigator determined to be unstable include, but are not limited to, severe liver and kidney or metabolic diseases requiring medical treatment
Subjects with second malignancies in addition to MM within the past 5 years before the screening, exceptions to this criterion: successfully treated cervical carcinoma in situ and non-metastatic basal or squamous cell skin carcinoma, local prostate cancer after radical surgery, and ductal carcinoma in situ of the breast after radical surgery
Subjects with a history of organ transplantation
Subjects have received major surgery within 2 weeks prior to leukapheresis or plan to receive surgery during the study or within 2 weeks after the study treatment (excluding local anesthesia)
Subjects participated in another interventional clinical study within 1 month before signing the informed consent (ICF)
Subjects with any uncontrolled active infection needed to receive systemic therapy within 7 days before leukapheresis
Positive for any of the following tests
Hepatitis B virus (HBV) surface antigen (HBsAg) or hepatitis B core antibody-positive and detectable HBV DNA in peripheral blood
Hepatitis C virus (HCV) antibody and hepatitis C virus RNA in peripheral blood
Human immunodeficiency virus (HIV) antibody
Cytomegalovirus (CMV) DNA
Treponema Pallidum antibody
Pregnant or lactating women
Subjects with mental illness or consciousness disorder or disease of the central nervous system
Other conditions that researchers consider inappropriate for enrollment
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