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NCT05032820 · OUTCOME

Exploratory Objective 2: Peak CAR T-cell Expansion

Upfront Chimeric Antigen Receptor T-Cell to Upgrade Response in Multiple Myeloma · Source last updated 2026-05-19

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

Measure
MEDIAN
Unit
copies/mcg DNA
Interval / dispersion
Standard Deviation
Time frame
6 months

What was measured

Quantitation of CAR T-cells in peripheral blood will be determined at specified timepoints by quantitative PCR assay, measured in copies/mcg genomic DNA. Peak CAR T-cell expansion will be compared between subjects who are and are not in CR at 6 months.

Analysis population: Participants who received an infusion

Groups in this outcome

Lenalidomide and bb2121

Patients complete apheresis and proceed to lymphodepleting chemotherapy with cyclophosphamide 300mg/m\^2 and fludarabine 30mg/m\^2 for 3 consecutive days followed by the infusion of BCMA CAR T-cells at a target dose of 450 x10\^6 cells. Maintenance lenalidomide, starting at 5mg a day for 21 days of a 28-day cycle will be initiated at a minimum of at least 30 days, but no later than 180 days after the CAR T-cell infusion and will continue until the patient reaches 12 months post CAR T-cell infusion and continue free of progression. Lenalidomide: Maintenance lenalidomide, starting at 5 mg a day for 21 days of a 28-day cycle, will be initiated at a minimum of at least 30 days, but no later than 180 days after the CAR T-cell infusion and will continue until the participant reaches 12 months post CAR T-cell infusion and continues free of progression bb2121: Participants receive infusion of BCMA CAR T-cells at a target dose of 450 x 10\^6 cells. Cyclophosphamide: 300 mg/m\^2/day for 3 consecutive days prior to the CAR T infusion Fludarabine: 30 mg/m\^2/day or 3 consecutive days prior to the CAR T infusion leukapheresis: Placement of central line catheter and leukapheresis

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

Analysis denominator · Participants

GroupSource count
Lenalidomide and bb212138

Reported measurements

In CR/sCR at 6 mth

Analysis denominator · Participants

GroupSource count
Lenalidomide and bb212124
Values in copies/mcg DNA · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Lenalidomide and bb2121110502.71102932.728Not reportedNot reportedNot reported
Not in CR/sCR at 6 mth

Analysis denominator · Participants

GroupSource count
Lenalidomide and bb212114
Values in copies/mcg DNA · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Lenalidomide and bb2121101723.96272376.464Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        102932.728
        value
        110502.71
    denoms
    1. counts
      1. group Id
        OG000
        value
        24
      units
      Participants
    title
    In CR/sCR at 6 mth
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        272376.464
        value
        101723.96
    denoms
    1. counts
      1. group Id
        OG000
        value
        14
      units
      Participants
    title
    Not in CR/sCR at 6 mth
denoms
  1. counts
    1. group Id
      OG000
      value
      38
    units
    Participants
description
Quantitation of CAR T-cells in peripheral blood will be determined at specified timepoints by quantitative PCR assay, measured in copies/mcg genomic DNA. Peak CAR T-cell expansion will be compared between subjects who are and are not in CR at 6 months.
dispersion Type
Standard Deviation
groups
  1. description
    Patients complete apheresis and proceed to lymphodepleting chemotherapy with cyclophosphamide 300mg/m\^2 and fludarabine 30mg/m\^2 for 3 consecutive days followed by the infusion of BCMA CAR T-cells at a target dose of 450 x10\^6 cells. Maintenance lenalidomide, starting at 5mg a day for 21 days of a 28-day cycle will be initiated at a minimum of at least 30 days, but no later than 180 days after the CAR T-cell infusion and will continue until the patient reaches 12 months post CAR T-cell infusion and continue free of progression. Lenalidomide: Maintenance lenalidomide, starting at 5 mg a day for 21 days of a 28-day cycle, will be initiated at a minimum of at least 30 days, but no later than 180 days after the CAR T-cell infusion and will continue until the participant reaches 12 months post CAR T-cell infusion and continues free of progression bb2121: Participants receive infusion of BCMA CAR T-cells at a target dose of 450 x 10\^6 cells. Cyclophosphamide: 300 mg/m\^2/day for 3 consecutive days prior to the CAR T infusion Fludarabine: 30 mg/m\^2/day or 3 consecutive days prior to the CAR T infusion leukapheresis: Placement of central line catheter and leukapheresis
    id
    OG000
    title
    Lenalidomide and bb2121
param Type
MEDIAN
population Description
Participants who received an infusion
reporting Status
POSTED
time Frame
6 months
title
Exploratory Objective 2: Peak CAR T-cell Expansion
type
OTHER_PRE_SPECIFIED
unit Of Measure
copies/mcg DNA

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice