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NCT06055075 · OUTCOME

Investigator-assessed Complete Response Rate (CRR) / Stringent Complete Response Rate (sCRR) Per IMWG Response Criteria

A Study Evaluating Safety, Tolerability, and Clinical Activity of Forimtamig-Based Treatment Combinations in Participants With Relapsed or Refractory Multiple Myeloma · Source last updated 2026-09-29

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
Up to approximately 15.2 months

What was measured

CRR and sCRR were defined as the percentage of participants with CR or sCR, as determined by the investigator per IMWG response criteria. CR was defined as: no evidence of initial monoclonal protein isotype(s) on immunofixation of the serum \& urine; Disappearance of any soft tissue plasmacytomas; \<5% plasma cells in BM \& a normal SFLC ratio of 0.26-1.65. sCR was defined as: CR (defined above); normal SFLC ratio, \& absence of clonal cells in BM by IHC or negative by 2-4 color flow cytometry. CR and sCR are distinct response categories and are evaluated and reported separately in accordance with the defined response criteria i.e., if a response is clinically upgraded from CR to sCR it is not further considered a CR but solely a sCR. Percentages have been rounded off.

Analysis population: Efficacy-evaluable population included all response evaluable participants, i.e., those who received at least one dose of one of their assigned study treatments and had at least one baseline and one on-treatment tumor assessment or those who had one tumor assessment at baseline and discontinued their treatment for any reason before their first on-treatment tumor assessment.

Groups in this outcome

Cohort 1: Arm B1: Forimtamig 0.3 mg + Carfilzomib

Participants received step-up doses of forimtamig 0.03 mg on Cycle 1 Day 1, 0.15 mg on Cycle 1 Day 8, and the target dose of 0.3 mg on Cycle 1 Day 15 and on Days 1 and 15 of each subsequent cycle, administered as a SC injection. Participants also received carfilzomib, 20 mg/m\^2 on Cycle 2 Day 1 and 56 mg/m\^2 on Cycle 2 Days 8 and 15, and from Cycle 3 onwards on Days 1, 8, and 15, administered as an IV infusion (1 cycle = 28 days).

Cohort 1: Arm B2: Forimtamig 0.75 mg + Carfilzomib

Participants received step-up doses of forimtamig, 0.03 mg on Cycle 1 Day 1, 0.15 mg on Cycle 1 Day 8, and the target dose of 0.75 mg on Cycle 1 Day 15 and on Days 1 and 15 of each subsequent cycle, administered as a SC injection. Participants also received carfilzomib 20 mg/m\^2 on Cycle 2 Day 1 and 56 mg/m\^2 on Cycle 2 Days 8 and 15, and from Cycle 3 onwards on Days 1, 8, and 15, administered as an IV infusion (1 cycle = 28 days).

Cohort 1: Arm B3: Forimtamig 1.5 mg + Carfilzomib

Participants received step-up doses of forimtamig, 0.03 mg on Cycle 1 Day 1, 0.15 mg on Cycle 1 Day 8, and the target dose of 1.5 mg on Cycle 1 Day 15 and on Days 1 and 15 of each subsequent cycle, administered as a SC injection. Participants also received carfilzomib, 20 mg/m\^2 on Cycle 2 Day 1 and 56 mg/m\^2 on Cycle 2 Days 8 and 15, and from Cycle 3 onwards on Days 1, 8, and 15, administered as an IV infusion (1 cycle = 28 days).

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Cohort 1: Arm B1: Forimtamig 0.3 mg + Carfilzomib7
Cohort 1: Arm B2: Forimtamig 0.75 mg + Carfilzomib6
Cohort 1: Arm B3: Forimtamig 1.5 mg + Carfilzomib6

Reported measurements

sCR
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Cohort 1: Arm B1: Forimtamig 0.3 mg + Carfilzomib28.6Not reported3.6770.96Not reported
Cohort 1: Arm B2: Forimtamig 0.75 mg + Carfilzomib33.3Not reported4.3377.72Not reported
Cohort 1: Arm B3: Forimtamig 1.5 mg + Carfilzomib33.3Not reported4.3377.72Not reported
CR
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Cohort 1: Arm B1: Forimtamig 0.3 mg + Carfilzomib28.6Not reported3.6770.96Not reported
Cohort 1: Arm B2: Forimtamig 0.75 mg + Carfilzomib16.7Not reported0.4264.12Not reported
Cohort 1: Arm B3: Forimtamig 1.5 mg + Carfilzomib0Not reported0.0045.93Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        3.67
        upper Limit
        70.96
        value
        28.6
      2. group Id
        OG001
        lower Limit
        4.33
        upper Limit
        77.72
        value
        33.3
      3. group Id
        OG002
        lower Limit
        4.33
        upper Limit
        77.72
        value
        33.3
    title
    sCR
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        3.67
        upper Limit
        70.96
        value
        28.6
      2. group Id
        OG001
        lower Limit
        0.42
        upper Limit
        64.12
        value
        16.7
      3. group Id
        OG002
        lower Limit
        0.00
        upper Limit
        45.93
        value
        0
    title
    CR
denoms
  1. counts
    1. group Id
      OG000
      value
      7
    2. group Id
      OG001
      value
      6
    3. group Id
      OG002
      value
      6
    units
    Participants
description
CRR and sCRR were defined as the percentage of participants with CR or sCR, as determined by the investigator per IMWG response criteria. CR was defined as: no evidence of initial monoclonal protein isotype(s) on immunofixation of the serum \& urine; Disappearance of any soft tissue plasmacytomas; \<5% plasma cells in BM \& a normal SFLC ratio of 0.26-1.65. sCR was defined as: CR (defined above); normal SFLC ratio, \& absence of clonal cells in BM by IHC or negative by 2-4 color flow cytometry. CR and sCR are distinct response categories and are evaluated and reported separately in accordance with the defined response criteria i.e., if a response is clinically upgraded from CR to sCR it is not further considered a CR but solely a sCR. Percentages have been rounded off.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received step-up doses of forimtamig 0.03 mg on Cycle 1 Day 1, 0.15 mg on Cycle 1 Day 8, and the target dose of 0.3 mg on Cycle 1 Day 15 and on Days 1 and 15 of each subsequent cycle, administered as a SC injection. Participants also received carfilzomib, 20 mg/m\^2 on Cycle 2 Day 1 and 56 mg/m\^2 on Cycle 2 Days 8 and 15, and from Cycle 3 onwards on Days 1, 8, and 15, administered as an IV infusion (1 cycle = 28 days).
    id
    OG000
    title
    Cohort 1: Arm B1: Forimtamig 0.3 mg + Carfilzomib
  2. description
    Participants received step-up doses of forimtamig, 0.03 mg on Cycle 1 Day 1, 0.15 mg on Cycle 1 Day 8, and the target dose of 0.75 mg on Cycle 1 Day 15 and on Days 1 and 15 of each subsequent cycle, administered as a SC injection. Participants also received carfilzomib 20 mg/m\^2 on Cycle 2 Day 1 and 56 mg/m\^2 on Cycle 2 Days 8 and 15, and from Cycle 3 onwards on Days 1, 8, and 15, administered as an IV infusion (1 cycle = 28 days).
    id
    OG001
    title
    Cohort 1: Arm B2: Forimtamig 0.75 mg + Carfilzomib
  3. description
    Participants received step-up doses of forimtamig, 0.03 mg on Cycle 1 Day 1, 0.15 mg on Cycle 1 Day 8, and the target dose of 1.5 mg on Cycle 1 Day 15 and on Days 1 and 15 of each subsequent cycle, administered as a SC injection. Participants also received carfilzomib, 20 mg/m\^2 on Cycle 2 Day 1 and 56 mg/m\^2 on Cycle 2 Days 8 and 15, and from Cycle 3 onwards on Days 1, 8, and 15, administered as an IV infusion (1 cycle = 28 days).
    id
    OG002
    title
    Cohort 1: Arm B3: Forimtamig 1.5 mg + Carfilzomib
param Type
NUMBER
population Description
Efficacy-evaluable population included all response evaluable participants, i.e., those who received at least one dose of one of their assigned study treatments and had at least one baseline and one on-treatment tumor assessment or those who had one tumor assessment at baseline and discontinued their treatment for any reason before their first on-treatment tumor assessment.
reporting Status
POSTED
time Frame
Up to approximately 15.2 months
title
Investigator-assessed Complete Response Rate (CRR) / Stringent Complete Response Rate (sCRR) Per IMWG Response Criteria
type
PRIMARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice