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NCT07150091 · OUTCOME

DE Phase: Number of Participants With Dose Limiting Toxicities (DLTs)

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
COUNT_OF_PARTICIPANTS
Unit
Participants
Interval / dispersion
Not reported
Time frame
Up to 28 days

What was measured

Criteria for dose-limiting toxicity (DLT) included hematologic indicators such as Grade 3-5 febrile neutropenia and thrombocytopenia with bleeding. Non-hematologic criteria, excluding corneal toxicity, comprise Grade 3-5 toxicities, with exceptions for manageable nausea, vomiting, or diarrhea, controlled Grade 3 hypertension, and events linked to disease progression. Tumor lysis syndrome (TLS) of Grade 3 or 4, successfully managed within 7 days without end-organ damage, is considered. Corneal toxicity, assessed by the GSK corneal grading scale at Grade 4, is a DLT. Other organ-specific toxicities, notably liver toxicity meeting GSK stopping criteria, also qualify as DLT severity was graded using National Cancer Institute (NCI) - Common Terminology Criteria for Adverse Events (CTCAE) (version 5.0).

Analysis population: DLT Evaluable Population included participants in DE Phase who have received at least 80% of all components of the intended dose of treatment in cycle 1 and were followed up for a period of one cycle length or withdrawn within the first cycle due to an AE meeting the definition of a DLT.

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 + Dexamethasone5
1.0 mg/kg Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone5

Reported measurements

Source class 1
Values in Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
0.5 Milligram/Kilogram (mg/kg) Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone1Not reportedNot reportedNot reportedNot reported
1.0 mg/kg Belantamab Mafodotin + Nirogacestat + Lenalidomide + Dexamethasone2Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        1
      2. group Id
        OG001
        value
        2
denoms
  1. counts
    1. group Id
      OG000
      value
      5
    2. group Id
      OG001
      value
      5
    units
    Participants
description
Criteria for dose-limiting toxicity (DLT) included hematologic indicators such as Grade 3-5 febrile neutropenia and thrombocytopenia with bleeding. Non-hematologic criteria, excluding corneal toxicity, comprise Grade 3-5 toxicities, with exceptions for manageable nausea, vomiting, or diarrhea, controlled Grade 3 hypertension, and events linked to disease progression. Tumor lysis syndrome (TLS) of Grade 3 or 4, successfully managed within 7 days without end-organ damage, is considered. Corneal toxicity, assessed by the GSK corneal grading scale at Grade 4, is a DLT. Other organ-specific toxicities, notably liver toxicity meeting GSK stopping criteria, also qualify as DLT severity was graded using National Cancer Institute (NCI) - Common Terminology Criteria for Adverse Events (CTCAE) (version 5.0).
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
COUNT_OF_PARTICIPANTS
population Description
DLT Evaluable Population included participants in DE Phase who have received at least 80% of all components of the intended dose of treatment in cycle 1 and were followed up for a period of one cycle length or withdrawn within the first cycle due to an AE meeting the definition of a DLT.
reporting Status
POSTED
time Frame
Up to 28 days
title
DE Phase: Number of Participants With Dose Limiting Toxicities (DLTs)
type
PRIMARY
unit Of Measure
Participants

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Preserved source evidence · Not medical advice