ASCT Combined With BCMA CAR-T and GPRC5D/CD3 BiTEs Maintenance for Transplant-Eligible Primary Plasma Cell Leukemia
Recruiting
Phase 2Interventional Study
Multiple Myeloma, Plasma Cell Leukemia
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
Prior Safety Data
This treatment has already been tested in at least one earlier human trial.
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Review the details below, then apply to join this clinical trial.
At a Glance
Age
18 – 70
Sex
Any
Trial phase
Phase 2
Study type
Interventional
Purpose
Treatment
Participants needed
20 (estimated)
Sponsor
Institute of Hematology & Blood Diseases Hospital, China · Other
Who this trial is looking for
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This is a prospective, single-arm, phase II study to evaluate the efficacy and safety of autologous stem cell transplantation combined with BCMA CAR-T therapy followed by GPRC5D/CD3 bispecific antibody maintenance in transplant-eligible patients with primary plasma cell leukemia.
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Eligibility Criteria
Inclusion Criteria:
1. Age ≥ 18 years and ≤ 70 years.
2. Participants with documented newly-diagnosed primary plasma cell leukemia according to IMWG diagnostic criteria.
3. Measurable disease at screening, defined as: Serum M-protein level ≥1.0 g/dL or urine M-protein level ≥200 mg/24 hours; or Lig…
Inclusion Criteria:
1. Age ≥ 18 years and ≤ 70 years.
2. Participants with documented newly-diagnosed primary plasma cell leukemia according to IMWG diagnostic criteria.
3. Measurable disease at screening, defined as: Serum M-protein level ≥1.0 g/dL or urine M-protein level ≥200 mg/24 hours; or Light chain MM without measurable disease in serum or urine: serum Ig free-light chain (FLC) ≥10 mg/dL and abnormal serum Ig kappa lambda FLC ratio.
4. Patients deemed eligible for high-dose chemotherapy with ASCT.
5. Tumor cells were BCMA and GPRC5D positive.
6. Serum total bilirubin \<2 x upper limit of normal (ULN), serum AST and ALT \<3 x ULN, creatinine clearance ≥ 30mL/min (Cockroft-Gault formula).
7. Informed Consent/Assent: All subjects have the ability to understand and the willingness to sign a written informed consent.
Exclusion Criteria:
1. Active amyloidosis.
2. Central nervous system involvement.
3. Prior BCMA-targeted therapy or CAR-T therapy.
4. Active hepatitis B or hepatitis C virus infection.
5. Known HIV infection.
6. Life expectancy \<6 months.
7. Woman who are pregnant or breastfeeding
8. Evidence of uncontrolled dysfunction of heart, lung, brain, and other important organs.
9. Any other conditions that are not eligible for the trial in the judgement of the principal investigator.
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