A Study of Talquetamab and Teclistamab Each in Combination With a Programmed Cell Death Receptor-1 (PD-1) Inhibitor for the Treatment of Participants With Relapsed or Refractory Multiple Myeloma
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1. Number of Participants with Adverse Events (AEs) (Time Frame - Up to 2 years 5 months): An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study.
2. Number of Participants with Adverse Events (AEs) by Severity (Time Frame - Up to 2 years 5 months): An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Severity will be graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0. Severity scale ranges from Grade 1 (Mild) to Grade 5 (Death). Grade 1= Mild, Grade 2= Moderate, Grade 3= Severe, Grade 4= Life-threatening, and Grade 5= Death related to adverse event.
3. Number of Participants with Abnormalities in Clinical Laboratory Assessments (Time Frame - Up to 2 years 5 months): Number of participants with abnormalities in clinical laboratory assessments (serum chemistry and hematology) will be reported.
4. Number of Participants with Dose-Limiting Toxicity (DLTs) (Time Frame - Up to 2 years 5 months): The DLTs are specific adverse events and are defined as any of the following: high grade non-hematologic toxicity, or hematologic toxicity.
Secondary outcome:
1. Overall Response Rate (ORR) (Time Frame - Up to 2 years 5 months): ORR is defined as the percentage of participants who achieve partial response (PR) or better according to the International Myeloma Working Group (IMWG) 2016 criteria.
2. Very Good Partial Response (VGPR) or Better Response Rate (Time Frame - Up to 2 years 5 months): VGPR or better response rate is defined as the percentage of participants who achieve a VGPR or better response (stringent complete response [sCR]+ complete response [CR]+VGPR) according to the IMWG 2016 criteria.
3. Complete Response (CR) or Better Response Rate (Time Frame - Up to 2 years 5 months): CR or better response rate is defined as the percentage of participants who achieve a CR or better response (sCR+CR) according to the IMWG 2016 criteria.
4. Stringent Complete Response (sCR) Rate (Time Frame - Up to 2 years 5 months): sCR rate is defined as the percentage of participants who achieve an sCR according to the IMWG 2016 criteria.
5. Duration of Response (Time Frame - Up to 2 years 5 months): Duration of response is defined as time from date of initial documentation of a response (PR or better) to date of first documented evidence of progressive disease (PD), per IMWG 2016 criteria or death due to any cause, whichever occurs first.
6. Time to Response (Time Frame - Up to 2 years 5 months): Time to response is defined as the time between date of first dose of study treatment and the first efficacy evaluation at which the participant has met all criteria for PR or better.
7. Serum Concentrations of Talquetamab (Time Frame - Up to 2 years 5 months): Serum samples will be analyzed to determine concentrations of Talquetamab using validated, specific, and sensitive immunoassay methods.
8. Serum Concentrations of Teclistamab (Time Frame - Up to 2 years 5 months): Serum samples will be analyzed to determine concentrations of Teclistamab using validated, specific, and sensitive immunoassay methods.
9. Serum Concentrations of PD-1 Inhibitor (Time Frame - Up to 2 years 5 months): Serum samples will be analyzed to determine concentrations of PD-1 inhibitor using validated, specific, and sensitive immunoassay methods.
10. Number of Participants with Anti-Talquetamab Antibodies (Time Frame - Up to 2 years 5 months): Number of participants with anti-talquetamab antibodies will be reported.
11. Number of Participants with Anti-Teclistamab Antibodies (Time Frame - Up to 2 years 5 months): Number of participants with anti-teclistamab antibodies will be reported.
12. Number of Participants with Anti-PD-1 Inhibitor Antibodies (Time Frame - Up to 2 years 5 months): Number of participants with anti-PD-1 inhibitor antibodies will be reported.
Experimental: Part 1: Dose Escalation Participants will receive either talquetamab (treatment regimen A) or teclistamab (treatment regimen B) with a PD-1 inhibitor biweekly.
Experimental: Part 2: Dose Expansion Participants will receive either treatment regimen A or treatment regimen B with a PD-1 inhibitor at the dose levels identified in Part 1.
Talquetamab: Talquetamab will be administered as a subcutaneous (SC) injection.
Teclistamab: Teclistamab will be administered as a SC injection.
PD-1 Inhibitor: The PD-1 inhibitor will be administered as an intravenous injection.
Quelle: ClinicalTrials.gov
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"A Study of Talquetamab and Teclistamab Each in Combination With a Programmed Cell Death Receptor-1 (PD-1) Inhibitor for the Treatment of Participants With Relapsed or Refractory Multiple Myeloma"
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