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Belantamab mafodotin /kg

Phase 1

AL Amyloidosis | Small molecule | Other |GSK plc|Last Updated: May 7, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment37
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05145816Phase 1/2a Study of Belantamab Mafodotin in Relapsed or Refractory AL AmyloidosisPHASE1 RECRUITING 37Feb 15, 2024Sep 1, 2027May 7, 20263 United States
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Study Endpoints
Primary Endpoints
Safety/Tolerability as measured by number of subjects with dose limiting toxicity (Part 1)
Up to 24 weeks from Cycle 1 Day 1

Safety/Tolerability is measured by the number of participants treated with different dose level of belantamab mafodotin who experience dose limiting toxicity adverse events (AE) \>= Grade 3, as defined by Common Terminology Criteria for Adverse Events by CTCAE v5.0 for Part 1.

Safety/Tolerability at the recommended Phase II dose of Belantamab Mafodotin, as measured by number of subjects with dose limiting toxicity (Part 2)
Up to 90 days after completing therapy

Safety/Tolerability at the recommended Phase II dose of Belantamab Mafodotin is measured by the number of subjects who experience dose limiting toxicities (\>= Grade 3, as defined by Common Terminology Criteria for Adverse Events by CTCAE v5.0) and cardiac and ocular AEs.

Secondary Endpoints
Percentage of subjects with preliminary hematological responses associated with Belantamab mafodotin (Part 1)
Up to 2 years after the last dose
Percentage of subjects with preliminary hematological responses associated with Belantamab mafodotin (Part 2)
Up to 2 years after the last dose
Percentage of subjects with cardiac response associated with Belantamab mafodotin (Part 2)
Up to 2 years after the last dose
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort (DL 0) for Part 1EXPERIMENTALCohort (DL 0) for Starting Dose : 1.9 mg/kg Belantamab mafodotin intravenously every 8 weeks
Cohort (DL +1) for Part 1EXPERIMENTALCohort (DL +1) for Dose Escalation: 2.5 mg/kg Belantamab mafodotin intravenously every 8 weeks
Cohort (DL -1) for Part 1EXPERIMENTALCohort (DL -1) for Dose De-escalation : 1.9 mg/kg Belantamab mafodotin intravenously every 12 weeks
Cohort (DL -2) for Part 1EXPERIMENTALCohort (DL -2) for Dose De-escalation: 1.4 mg/kg Belantamab mafodotin intravenously every 12 weeks
Cohort Dose Expansion for Part 2EXPERIMENTALCohort Dose expansion for Part 2: Belantamab mafodotin Dose from1.0 mg/kg to 2.5mg/kg every 8 or 12 weeks as determined by Part 1 recommended dosage calculations.
Cohort (DL -3) for Part 1EXPERIMENTALCohort (DL -3) for Dose De-escalation: 1.0 mg/kg Belantamab mafodotin intravenously every 12 weeks
Interventions
NameTypeDescription
Belantamab mafodotin 2.5 mg/kg (8 weeks)DRUG2.5 mg/kg IV Belantamab mafodotin IV every 8 weeks for Part 1
Belantamab mafodotin 1.9 mg/kg (8 weeks)DRUG1.9 mg/kg IV Belantamab mafodotin IV every 8weeks for Part 1
Belantamab mafodotin 1.4 mg/kg (12 weeks)DRUG1.4 mg/kg Belantamab mafodotin IV every 12 weeks for Part 1
Belantamab mafodotin 1.9 mg/kg (12 weeks)DRUG1.9 mg/kg Belantamab mafodotin IV every 12 weeks for Part 1
Belantamab mafodotin every 8 weeks or 12 weeks as determined by Part 1 recommended dosagesDRUGBelantamab mafodotin Dose 1.0 mg/kg, 1.4 mg/kg, 1.9mg/kg or 2.5mg/kg every 8 weeks or 12 weeks as determined by Part 1 recommended dosages.
Belantamab mafodotin 1.0 mg/kg (12 weeks)DRUG1.0 mg/kg Belantamab mafodotin IV every 12 weeks for Part 1
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: 1. Participants medically diagnosed with relapsed or refractory Amyloid Light Chain Amyloidosis (AL amyloidosis) with one or more line of treatment as below: 1. Must have received a proteosome inhibitor, alkylator and anti-cluster of differentiation 38 (CD38) antibody (e.g.,...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT05145816studyFirstPostDate: changed