NCT07150091 · OUTCOME

DE Phase: Plasma Concentrations of Belantamab Mafodotin Antibody-Drug Conjugate (ADC)

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: MEDIAN
Unit: Nanogram/ millilitre (ng/mL)
Interval / dispersion: Full Range
Time frame: Predose, end of infusion (EOI), and 2 hours postdose on Cycle 1 Day 1; anytime samples at Cycle 1 Day 4, 8, 29; Predose and EOI on Day 1 of Cycle 2, 4, 6, 9, 12; Predose on Cycle 18 Day 1; and end of treatment (~143 weeks)

What was measured

Blood samples were collected for PK analysis of belantamab mafodotin Antibody-Drug Conjugate (ADC). Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in the Overall Number of Participants Analyzed field. 'Number Analyzed' signifies participants evaluable for the specified timepoints.

Analysis population: Pharmacokinetic (PK) population included all participants in the safety population from whom at least one PK sample has been obtained and analyzed. The "0" participants analyzed represents that data was not collected or available for analysis at that particular time point for the respective Arms/Groups.

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.