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NCT03582033 · OUTCOME

ORR as Per the IMWG Uniform Response Criteria: Part B

A Safety Study of SEA-BCMA in Patients With Multiple Myeloma · Source last updated 2024-12-24

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
From the first dose of study treatment until the first documented sCR or CR or PR or VGPR or new anti-cancer therapies or death, whichever occurred first (maximum up to 34 months)

What was measured

The ORR was defined as the percentage of participants with an OR per investigator. A participant was determined to have an OR if, based on the 2016 IMWG uniform response criteria, and achieved a sCR, CR, VGPR, or a PR. sCR: FLC ratio \& absence of clonal cells in bone marrow by IC/IF. CR: negative immunofixation of serum \& urine, disappearance of any STP, 5% plasma cells in bone marrow. VGPR: serum and UMP detectable by immunofixation but not on electrophoresis or \>= 90% reduction in SMP level+UMP level \<100 mg/24 hour, PR: \>=50% reduction of SMP \& reduction in 24-hour urinary M-protein by \>=90%/to \<200 mg/24 hour. If SMP \& UMP are unmeasurable, a ≥50% decrease in the difference between involved \& uninvolved FLC levels were required in place of the M-protein criteria. In addition to above criteria, if present at baseline, \>=50% reduction in the size of STP were also required.

Analysis population: All treated participants analysis set included all treated participants who received any amount of SEA-BCMA.

Groups in this outcome

Part B: SEA-BCMA 1600mg

Participants received SEA-BCMA 1600 mg as an IV infusion q1wk as induction dose for the first two cycles, followed by q2wk as maintenance dose in subsequent cycles, of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.

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

Analysis denominator · Participants

GroupSource count
Part B: SEA-BCMA 1600mg20

Reported measurements

Source class 1
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Part B: SEA-BCMA 1600mg20Not reported5.743.7Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        5.7
        upper Limit
        43.7
        value
        20
denoms
  1. counts
    1. group Id
      OG000
      value
      20
    units
    Participants
description
The ORR was defined as the percentage of participants with an OR per investigator. A participant was determined to have an OR if, based on the 2016 IMWG uniform response criteria, and achieved a sCR, CR, VGPR, or a PR. sCR: FLC ratio \& absence of clonal cells in bone marrow by IC/IF. CR: negative immunofixation of serum \& urine, disappearance of any STP, 5% plasma cells in bone marrow. VGPR: serum and UMP detectable by immunofixation but not on electrophoresis or \>= 90% reduction in SMP level+UMP level \<100 mg/24 hour, PR: \>=50% reduction of SMP \& reduction in 24-hour urinary M-protein by \>=90%/to \<200 mg/24 hour. If SMP \& UMP are unmeasurable, a ≥50% decrease in the difference between involved \& uninvolved FLC levels were required in place of the M-protein criteria. In addition to above criteria, if present at baseline, \>=50% reduction in the size of STP were also required.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received SEA-BCMA 1600 mg as an IV infusion q1wk as induction dose for the first two cycles, followed by q2wk as maintenance dose in subsequent cycles, of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.
    id
    OG000
    title
    Part B: SEA-BCMA 1600mg
param Type
NUMBER
population Description
All treated participants analysis set included all treated participants who received any amount of SEA-BCMA.
reporting Status
POSTED
time Frame
From the first dose of study treatment until the first documented sCR or CR or PR or VGPR or new anti-cancer therapies or death, whichever occurred first (maximum up to 34 months)
title
ORR as Per the IMWG Uniform Response Criteria: Part B
type
SECONDARY
unit Of Measure
Percentage of participants

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Preserved source evidence · Not medical advice