Multiple Myeloma Clinical Trial

Safety and Efficacy of CS1 CAR-T (WS-CART-CS1) in Subjects With Multiple Myeloma

Summary

Despite recent therapeutic advances, multiple myeloma (MM) remains an incurable disease. Although survival has improved, there are nevertheless diminishing durations of response to each subsequent line of therapy. This highlights the need for further therapeutic innovation. BCMA-targeting CAR-T cells show impressive response rates; however, their median duration of response is disappointing. The investigators propose that CS1(SLAMF7)-targeting CAR-T cells will fill a gap in the MM armamentarium.

CS1 is an attractive target in MM because it is expressed in most patients. Elotuzumab (Empliciti®), an approved anti-CS1 antibody, has proven the clinical efficacy of this target. CAR-T cells are an ideal modality to target CS1, given that two approved treatments, ide-cel (idecabtagene vicleucel, AbecmaTM) and cilta-cel (ciltacabtagene autoleucel, Carvykti™), have proven the potential for cellular immunotherapy in MM.

The investigators are testing the safety and preliminary anti-myeloma efficacy of WS-CART-CS1, a CAR-T cell therapy targeting CS1.

View Eligibility Criteria

Eligibility Criteria

Inclusion Criteria:

Relapsed or refractory multiple myeloma after 3 or more prior lines of therapy, including proteasome inhibitor (e.g. bortezomib or carfilzomib), anti-CD38 therapy (e.g. daratumumab), and anti-BCMA therapies (e.g. BCMA bispecific antibodies or BCMA CAR-T)

Measurable disease, defined as meeting at least one of the following criteria:

Serum M-protein ≥ 0.5 g/dL
Urine M-protein ≥ 200 mg/24 h
Serum FLC assay: involved FLC level ≥10 mg/dL (100 mg/L) with abnormal serum FLC ratio
A biopsy-proven plasmacytoma
Bone marrow plasma cells > 30% of total bone marrow cells
At least 18 years of age.
ECOG performance status ≤ 1

Adequate renal, hepatic, respiratory, and cardiovascular function, as defined below:

Renal function:

calculated creatinine clearance ≥ 50 mL/min/1.73 m2 OR
radioisotope glomerular filtration rate ≥ 50 mL/min/1.73 m2 OR
normal serum creatinine based on age/gender per institutional normal range

Hepatic function:

ALT (SGPT) ≤ 5 x ULN for age
Total bilirubin ≤ 2.0 x IULN (unless the patient has Grade 1 bilirubin elevation due to Gilbert's disease or a similar syndrome involving slow conjugation of bilirubin)

Respiratory function:

Minimum level of pulmonary reserve defined as oxygen saturation > 91% measured by pulse oximetry on room air

Cardiovascular function:

LVEF ≥ 45% confirmed by echocardiogram or MUGA within 28 days of screening
The effects of CS1 CAR-T on the developing human fetus are unknown. For this reason, women of childbearing potential and men must agree to use adequate contraception (at least 2 forms of contraception, including one barrier method) prior to study entry and for 12 months after CS1 CAR-T infusion. If a female subject or female partner of a male subject becomes pregnant during therapy or within 12 months following WS-CART-CS1 infusion, the investigator must be notified in order to facilitate outcome follow-up.
Ability to understand and willingness to sign an IRB-approved written informed consent document (or that of legally authorized representative, if applicable).

Exclusion Criteria:

Any prior systemic therapy for multiple myeloma within 14 days before planned day of leukapheresis.
A history of other malignancy with the exception of treated non-melanomatous skin cancers and malignancies for which all treatment was completed at least 2 years before registration and the subject has no evidence of disease.
Currently receiving any other investigational agents.
Receipt of any cellular therapy within 8 weeks prior to the planned start of conditioning.
History of CS1-directed therapies.
A history of allergic reactions attributed to compounds of similar chemical or biologic composition to CS1 CAR-T or other agents used in the study.
History of Grade 3 CRS or ICANS with other CAR-Ts (including BCMA CAR).
Active hepatitis B, active hepatitis C, any uncontrolled infection, or HIV infection.
Ongoing or active infection or other serious underlying medical condition that would impair the ability to receive protocol treatment.
Pregnant and/or breastfeeding. Women of childbearing potential must have a negative pregnancy test within 14 days of study entry.

Study is for people with:

Multiple Myeloma

Phase:

Phase 1

Estimated Enrollment:

25

Study ID:

NCT06185751

Recruitment Status:

Not yet recruiting

Sponsor:

Washington University School of Medicine

Check Your Eligibility

Let’s see if you might be eligible for this study.

What is your age and gender ?

Submit

There is 1 Location for this study

See Locations Near You

Washington University School of Medicine
Saint Louis Missouri, 63110, United States More Info
Armin Ghobadi, M.D.
Contact
314-747-2743
[email protected]
Armin Ghobadi, M.D.
Principal Investigator
John F DiPersio, M.D., Ph.D.
Sub-Investigator
Ravi Vij, M.D.
Sub-Investigator
Keith Stockerl-Goldstein, M.D.
Sub-Investigator
Mark A Schroeder, M.D.
Sub-Investigator
Matthew J Christopher, M.D., Ph.D.
Sub-Investigator
Zachary D Crees, M.D.
Sub-Investigator
Ramzi Abboud, M.D.
Sub-Investigator
Mark A Fiala, MSW, Ph.D.
Sub-Investigator
Feng Gao, M.D., Ph.D.
Sub-Investigator

How clear is this clinincal trial information?

Study is for people with:

Multiple Myeloma

Phase:

Phase 1

Estimated Enrollment:

25

Study ID:

NCT06185751

Recruitment Status:

Not yet recruiting

Sponsor:


Washington University School of Medicine

How clear is this clinincal trial information?

×

Introducing, the Journey Bar

Use this bar to access information about the steps in your cancer journey.