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NCT03548207 · OUTCOME

Phase 2: Overall Response Rate (ORR)

A Study of JNJ-68284528, a Chimeric Antigen Receptor T Cell (CAR-T) Therapy Directed Against B-Cell Maturation Antigen (BCMA) in Participants With Relapsed or Refractory Multiple Myeloma · Source last updated 2025-07-30

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
Day 1 up to 45.2 months

What was measured

ORR was defined as the percentage of participants who achieved partial response (PR) or better according to international myeloma working group (IMWG) criteria. IMWG criteria for PR: greater than or equal to (\>=) 50 percent (%) reduction of serum M-protein and reduction in 24-hour urinary M-protein by \>=90% or to less than (\<) 200 milligrams (mg) per 24 hours. If the serum and urine M-protein were not measurable, a decrease of \>=50% in the difference between involved and uninvolved free light chain (FLC) levels was required in place of the M-protein criteria. If serum and urine M-protein were not measurable, and serum free light assay was also not measurable, \>=50% reduction in bone marrow plasma cells (PCs) was required in place of M-protein, provided baseline bone marrow PC percentage was \>=30%. In addition to the above criteria, if present at baseline, a \>=50% reduction in the size of soft tissue plasmacytomas was also required.

Analysis population: Modified intent-to-treat (mITT) analysis set included all participants who received a JNJ-68284528 infusion at the targeted recommended phase 2 dose (RP2D) dose level. Here, N (number of participants analyzed) signifies participants who were evaluable for this outcome measure.

Groups in this outcome

Phase 2 (US Population)

Participants received a conditioning regimen of cyclophosphamide 300 mg/m\^2 IV infusion and fludarabine 30 mg/m\^2 IV infusion daily for 3 days from Day -5 to Day -3. On Day 1, participants received recommended phase 2 dose (RP2D) dose of JNJ-68284528 0.75\*10\^6 CAR positive viable T cells/kg as IV infusion.

Phase 2 (Japan Population)

Participants received a conditioning regimen of cyclophosphamide 300 mg/m\^2 IV infusion and fludarabine 30 mg/m\^2 IV infusion daily for 3 days from Day -5 to Day -3. On Day 1, participants received RP2D dose of JNJ-68284528 0.75\*10\^6 CAR positive viable T cells/kg as IV infusion.

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

Analysis denominator · Participants

GroupSource count
Phase 2 (US Population)68
Phase 2 (Japan Population)8

Reported measurements

Source class 1
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Phase 2 (US Population)97.1Not reported89.899.6Not reported
Phase 2 (Japan Population)100.0Not reported66.4100.0Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        89.8
        upper Limit
        99.6
        value
        97.1
      2. group Id
        OG001
        lower Limit
        66.4
        upper Limit
        100.0
        value
        100.0
denoms
  1. counts
    1. group Id
      OG000
      value
      68
    2. group Id
      OG001
      value
      8
    units
    Participants
description
ORR was defined as the percentage of participants who achieved partial response (PR) or better according to international myeloma working group (IMWG) criteria. IMWG criteria for PR: greater than or equal to (\>=) 50 percent (%) reduction of serum M-protein and reduction in 24-hour urinary M-protein by \>=90% or to less than (\<) 200 milligrams (mg) per 24 hours. If the serum and urine M-protein were not measurable, a decrease of \>=50% in the difference between involved and uninvolved free light chain (FLC) levels was required in place of the M-protein criteria. If serum and urine M-protein were not measurable, and serum free light assay was also not measurable, \>=50% reduction in bone marrow plasma cells (PCs) was required in place of M-protein, provided baseline bone marrow PC percentage was \>=30%. In addition to the above criteria, if present at baseline, a \>=50% reduction in the size of soft tissue plasmacytomas was also required.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received a conditioning regimen of cyclophosphamide 300 mg/m\^2 IV infusion and fludarabine 30 mg/m\^2 IV infusion daily for 3 days from Day -5 to Day -3. On Day 1, participants received recommended phase 2 dose (RP2D) dose of JNJ-68284528 0.75\*10\^6 CAR positive viable T cells/kg as IV infusion.
    id
    OG000
    title
    Phase 2 (US Population)
  2. description
    Participants received a conditioning regimen of cyclophosphamide 300 mg/m\^2 IV infusion and fludarabine 30 mg/m\^2 IV infusion daily for 3 days from Day -5 to Day -3. On Day 1, participants received RP2D dose of JNJ-68284528 0.75\*10\^6 CAR positive viable T cells/kg as IV infusion.
    id
    OG001
    title
    Phase 2 (Japan Population)
param Type
NUMBER
population Description
Modified intent-to-treat (mITT) analysis set included all participants who received a JNJ-68284528 infusion at the targeted recommended phase 2 dose (RP2D) dose level. Here, N (number of participants analyzed) signifies participants who were evaluable for this outcome measure.
reporting Status
POSTED
time Frame
Day 1 up to 45.2 months
title
Phase 2: Overall Response Rate (ORR)
type
PRIMARY
unit Of Measure
Percentage of participants

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice