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NCT07150091 · OUTCOME

DE Phase: Overall Response Rate (ORR)

Sub-study of Belantamab Mafodotin (GSK2857916) in Combination With Nirogacestat, Lenalidomide, and Dexamethasone in Participants With RRMM · Source last updated 2026-06-16

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 143 weeks

What was measured

Overall Response Rate (ORR) was defined as the percentage of participants with a confirmed Partial Response (PR) or better as the best overall response (i.e., PR, Very Good Partial Response \[VGPR\], Complete Response \[CR\], and stringent Complete Response \[sCR\]), as assessed by the investigator per international myeloma working group (IMWG) (2016). PR is defined as ≥50% reduction of serum M-protein and reduction in 24-hour urinary M-protein by ≥90% or to \<200 mg/24 h. VGPR is defined as serum and urine M-component detectable by immunofixation but not on electrophoresis OR ≥ 90% reduction in serum M-component plus urine M-component \<100 mg/24 h. CR is defined as negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND \<5% plasmacytomas in the bone marrow. sCR is defined as CR as above PLUS normal serum free light-chain (FLC) assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence.

Analysis population: Safety population

Groups in this outcome

0.5 Milligram/Kilogram (mg/kg) Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone

Participants with Relapsed/Refractory Multiple Myeloma (RRMM) received 0.5 mg/kg belantamab mafodotin intravenous (IV) infusion as powder for solution once every 4 weeks (Q4W) infused over 30- 60 minutes on day 1 of each 28-day cycle in combination with 100 mg Nirogacestat administered orally twice a day (BID) up to Day 28; with Lenalidomide 25 mg (10 mg if Estimated Glomerular Filtration (eGFR) is 40-60 milliLitre (mL)/minute/1.73 square meter (m)\^2) administered orally once daily (QD) from Day 1 to Day 21; and Dexamethasone 40 mg (20 mg for participants \>75 years old or BMI \<18.5 kg/m\^2) administered orally on days 1, 8, 15 and 22 of each 28-day cycle.

1.0 mg/kg Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone

Participants with Relapsed/Refractory Multiple Myeloma (RRMM) received 1.0 mg/kg belantamab mafodotin intravenous (IV) infusion as powder for solution infused over 30- 60 minutes Q4W for cycle 1 and then Q8W for cycle 2 onwards on day 1 of 28-day cycle in Q4W and 56-day cycle in Q8W in combination with 100 mg Nirogacestat administered orally twice a day (BID) up to Day 28; with Lenalidomide 25 mg (10 mg if Estimated Glomerular Filtration (eGFR) is 40-60 milliLitre (mL)/minute/1.73 square meter (m)\^2) administered orally once daily (QD) from Day 1 to Day 21; and Dexamethasone 40 mg (20 mg for participants \>75 years old or BMI \<18.5 kg/m\^2) administered orally on days 1, 8, 15 and 22 of each 28-day cycle.

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

Analysis denominator · Participants

GroupSource count
0.5 Milligram/Kilogram (mg/kg) Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone10
1.0 mg/kg Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone10

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
0.5 Milligram/Kilogram (mg/kg) Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone40Not reported12.273.8Not reported
1.0 mg/kg Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone70Not reported34.893.3Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        12.2
        upper Limit
        73.8
        value
        40
      2. group Id
        OG001
        lower Limit
        34.8
        upper Limit
        93.3
        value
        70
denoms
  1. counts
    1. group Id
      OG000
      value
      10
    2. group Id
      OG001
      value
      10
    units
    Participants
description
Overall Response Rate (ORR) was defined as the percentage of participants with a confirmed Partial Response (PR) or better as the best overall response (i.e., PR, Very Good Partial Response \[VGPR\], Complete Response \[CR\], and stringent Complete Response \[sCR\]), as assessed by the investigator per international myeloma working group (IMWG) (2016). PR is defined as ≥50% reduction of serum M-protein and reduction in 24-hour urinary M-protein by ≥90% or to \<200 mg/24 h. VGPR is defined as serum and urine M-component detectable by immunofixation but not on electrophoresis OR ≥ 90% reduction in serum M-component plus urine M-component \<100 mg/24 h. CR is defined as negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND \<5% plasmacytomas in the bone marrow. sCR is defined as CR as above PLUS normal serum free light-chain (FLC) assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with Relapsed/Refractory Multiple Myeloma (RRMM) received 0.5 mg/kg belantamab mafodotin intravenous (IV) infusion as powder for solution once every 4 weeks (Q4W) infused over 30- 60 minutes on day 1 of each 28-day cycle in combination with 100 mg Nirogacestat administered orally twice a day (BID) up to Day 28; with Lenalidomide 25 mg (10 mg if Estimated Glomerular Filtration (eGFR) is 40-60 milliLitre (mL)/minute/1.73 square meter (m)\^2) administered orally once daily (QD) from Day 1 to Day 21; and Dexamethasone 40 mg (20 mg for participants \>75 years old or BMI \<18.5 kg/m\^2) administered orally on days 1, 8, 15 and 22 of each 28-day cycle.
    id
    OG000
    title
    0.5 Milligram/Kilogram (mg/kg) Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone
  2. description
    Participants with Relapsed/Refractory Multiple Myeloma (RRMM) received 1.0 mg/kg belantamab mafodotin intravenous (IV) infusion as powder for solution infused over 30- 60 minutes Q4W for cycle 1 and then Q8W for cycle 2 onwards on day 1 of 28-day cycle in Q4W and 56-day cycle in Q8W in combination with 100 mg Nirogacestat administered orally twice a day (BID) up to Day 28; with Lenalidomide 25 mg (10 mg if Estimated Glomerular Filtration (eGFR) is 40-60 milliLitre (mL)/minute/1.73 square meter (m)\^2) administered orally once daily (QD) from Day 1 to Day 21; and Dexamethasone 40 mg (20 mg for participants \>75 years old or BMI \<18.5 kg/m\^2) administered orally on days 1, 8, 15 and 22 of each 28-day cycle.
    id
    OG001
    title
    1.0 mg/kg Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone
param Type
NUMBER
population Description
Safety population
reporting Status
POSTED
time Frame
Up to 143 weeks
title
DE Phase: Overall Response Rate (ORR)
type
SECONDARY
unit Of Measure
Percentage of Participants

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Preserved source evidence · Not medical advice