The purpose of this study is to characterize the safety of Talquetamab and to determine the recommended Phase 2 dose(s) (RP2Ds) and dosing schedule assessed to be safe for Talquetamab (Part 1 [Dose Escalation]) and to further characterize the safety of Talquetamab at the recommended Phase 2 dose(s) (RP2Ds) (Part 2 [Dose Expansion]).
The study will be conducted in 2 parts: dose escalation and dose expansion. The study will evaluate safety, tolerability, pharmacokinetics and preliminary antitumor activity of Talquetamab administered to adult participants with relapsed or refractory multiple myeloma. The overall safety of the study drug will be assessed by physical examinations, Eastern Cooperative Oncology Group performance status, laboratory tests, vital signs, electrocardiograms, adverse event monitoring, and concomitant medication usage. Disease evaluations will include peripheral blood and bone marrow assessments at screening (performed within 28 days) and to confirm stringent complete response (sCR), complete response (CR), or relapse from CR. The end of study (study completion) is defined as the last study assessment for the last participant in the study.
| SparkCures ID | 938 |
|---|---|
| Trial Phase | Phase 1 |
| Enrollment | 185 Patients |
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The following criteria is a partial list of reasons why patients may or may not be eligible to participate in this clinical trial. Further evaluation with a medical professional will be required to determine full eligibility.
The following criteria is provided for health care professionals.
Inclusion Criteria:
Exclusion Criteria:
The following is a listing of trial locations that are open and accepting patients.
New York, NY
Nashville, TN
New York, NY
Nashville, TN
December 02, 2020
As of 20 Jul 2020, 137 pts had received talquetamab; 102 by IV (0.5 – 180 µg/kg) and 35 by SC (5 – 800 µg/kg) dosing. Median age was 64 years (33 – 80; 31% were ≥70) and 22% had ISS stage III disease at study entry. Median number of prior therapies was 6 (2 – 20) over a median of 6.5 years (0.9 – 27) since diagnosis, 85% were refractory to last line of therapy, 79% triple-class refractory, 73% penta-drug exposed, and 31% penta-drug refractory. 13 (10%) pts had received selinexor and 21 (15%) had prior BCMA-directed therapy.
Most frequently reported all grade AEs were anemia (50%), CRS (47%), neutropenia (45%), and lymphopenia (40%). Most common grade 3 – 4 AEs were lymphopenia (37%), anemia (27%), and neutropenia (25%). CRS was mostly grade 1 – 2 except for 5 pts with grade 3 CRS (Ë‚8% of pts with CRS) that occurred with IV dosing; only grade 1 – 2 CRS was seen with SC dosing. CRS was generally confined to the first cycle with median time to onset of 1 day (1 – 3) for IV and 2 days (1 – 5) for SC dosing. Treatment-related neurotoxicity was reported in 7 (5%) pts (all resolved/resolving; median duration of 2 days [1 – 9]): 4 had grade 1 – 2 events and 3 had grade 3 events of delirium (n=1), decreased level of consciousness (n=1), or confusion (n=1). Six of 7 pts had neurotoxicity that occurred in the context of CRS, including all 3 grade 3 events. Infections were reported in 37% of pts (8% grade 3 – 4). Infusion related reactions (IV; 15%) and injection site reactions (SC; 14%) were grade 1 – 2 and generally occurred in cycle 1. Two dose-limiting toxicities were observed: clinically asymptomatic grade 4 increased lipase in the setting of a pancreatic plasmacytoma (7.5 µg/kg IV) and grade 3 maculopapular rash (135 µg/kg SC). The maximum tolerated dose (MTD) has not been defined.
Overall response rate (ORR) for IV doses of 20 – 180 µg/kg was 78% (14/18; 2 pending confirmation); 6/6 responded at the 60 µg/kg IV dose. ORR for SC doses of 135 – 405 µg/kg was 67% (8/12); 3/4 responded at the 405 µg/kg SC dose. Responses were noted starting at 1.0 µg/kg, were rapid at a median of 1 month (0.2 – 3), and durable with median not reached in 36/46 (4 pts with response 15+ months; longest at 23+ months). Data at higher doses are immature, and results will be updated at the meeting.
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