Study of Belantamab Mafodotin Plus Standard of Care (SoC) in Newly Diagnosed Multiple Myeloma (DREAMM 9)

November 6, 2026 updated by: GlaxoSmithKline

A Phase 1, Randomized, Dose and Schedule Evaluation Study to Investigate the Safety, Pharmacokinetics, Pharmacodynamics and Clinical Activity of Belantamab Mafodotin Administered in Combination With Standard of Care in Participants With Newly Diagnosed Multiple Myeloma

This study will evaluate the safety, pharmacokinetics, pharmacodynamics and clinical activity of belantamab mafodotin in combination with Velcade (bortezomib), Revlimid (lenalidomide), dexamethasone (VRd) and will determine recommended phase 3 dose (RP3D) in adult participants with newly diagnosed multiple myeloma (NDMM). Participants will receive the combination of bortezomib, lenalidomide and dexamethasone (VRd) on a 3-week cycle until cycle 8, followed by the combination of lenalidomide and dexamethasone (Rd) on a 4-week cycle thereafter as per dosing schedule. Participants will receive belantamab mafodotin on a schedule that is dependent on the cohort to which they are assigned. Belantamab mafodotin will be administered in combination with VRd every 3 weeks (Q3W), every 6 weeks (Q6W), or every 9 weeks (Q9W) to Cycle 8, and then in combination with Rd every 4 weeks (Q4W), every 8 weeks (Q8W), or every 12 weeks (Q12W) thereafter. Participants will complete an End of Treatment (EOT) visit at the point of study treatment discontinuation, followed by a Safety Follow-up visit 70 days after EOT.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
118

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Expanded Access

Expanded Access

A way for patients with serious diseases or conditions who cannot participate in a clinical trial to gain access to a medical product that has not been approved by the U.S. Food and Drug Administration (FDA). Also called compassionate use. There are different expanded access types.
Approved

Approved

  • Available: Expanded access is currently available for this investigational treatment, and patients who are not participants in the clinical study may be able to gain access to the drug, biologic, or medical device being studied.
  • No longer available: Expanded access was available for this intervention previously but is not currently available and will not be available in the future.
  • Temporarily not available: Expanded access is not currently available for this intervention but is expected to be available in the future.
  • Approved for marketing: The intervention has been approved by the U.S. Food and Drug Administration for use by the public.
 for sale to the public. See expanded access record.

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Australia
    • New South Wales
      • Newcastle, New South Wales, Australia, 2298
        • GSK Investigational Site
    • Victoria
      • Clayton, Victoria, Australia, 3168
        • GSK Investigational Site
      • Fitzroy, Victoria, Australia, 3065
        • GSK Investigational Site
  • Canada
    • Alberta
      • Edmonton, Alberta, Canada, T6G 1Z2
        • GSK Investigational Site
    • Ontario
      • London, Ontario, Canada, N6A 5W9
        • GSK Investigational Site
  • France
      • Poitiers, France, 86021
        • GSK Investigational Site
  • Germany
      • Dresden, Germany, 01307
        • GSK Investigational Site
      • Hamburg, Germany, 20246
        • GSK Investigational Site
      • Schwerin, Germany, 19049
        • GSK Investigational Site
      • Tübingen, Germany, 72076
        • GSK Investigational Site
  • Italy
      • Bologna, Italy, 40138
        • GSK Investigational Site
      • Meldola FC, Italy, 47014
        • GSK Investigational Site
  • Poland
      • Lublin, Poland, 20-081
        • GSK Investigational Site
      • Poznan, Poland, 61-848
        • GSK Investigational Site
  • South Korea
      • Seoul, South Korea, 03080
        • GSK Investigational Site
      • Seoul, South Korea, 03722
        • GSK Investigational Site
      • Seoul, South Korea, 137-701
        • GSK Investigational Site
  • Spain
      • Barcelona, Spain, 08036
        • GSK Investigational Site
      • Madrid, Spain, 28027
        • GSK Investigational Site
      • Málaga, Spain, 29010
        • GSK Investigational Site
      • PamplonaNavarra, Spain, 31008
        • GSK Investigational Site
      • Pozuelo de AlarcOn Madr, Spain, 28223
        • GSK Investigational Site
      • Santander, Spain, 39008
        • GSK Investigational Site
    • Barcelona
      • Badalona, Barcelona, Spain, 08916
        • GSK Investigational Site
  • United Kingdom
      • Leicester, United Kingdom, LE1 5WW
        • GSK Investigational Site
      • Oxford, United Kingdom, OX3 7LE
        • GSK Investigational Site
    • Hampshire
      • Southampton, Hampshire, United Kingdom, SO16 6YD
        • GSK Investigational Site
  • United States
    • Kansas
      • Westwood, Kansas, United States, 66205
        • GSK Investigational Site
    • North Carolina
      • Charlotte, North Carolina, United States, 28204
        • GSK Investigational Site
    • Wisconsin
      • Madison, Wisconsin, United States, 53792-0001
        • GSK Investigational Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Participant must be over 18 years of age inclusive, at the time of signing the informed consent.
  • Diagnosis of multiple myeloma with a requirement for treatment as documented per international myeloma working group (IMWG) criteria.
  • Must have at least one aspect of measurable disease, defined as one of the following:
  • Urine M-protein excretion >=200 mg/24 hours (>=0.2 gram [g]/24 hours), or
  • Serum M-protein concentration >=0.5 grams per deciliter (g/dL) (>=5.0 gram per liter [g/L]), or
  • Serum free light chain (FLC) assay: involved FLC level >=10 milligrams per deciliter (mg/dL) (>=100 milligram per liter [mg/L]) and an abnormal serum free light chain ratio (<0.26 or >1.65).
  • Not a candidate for high-dose chemotherapy with autologous stem cell transplant (ASCT) due to presence of significant comorbid condition(s), such as cardiac, pulmonary or other major organ dysfunction that are likely to have a negative impact on tolerability of high dose chemotherapy with stem cell transplantation, as judged by the investigator.
  • Eastern cooperative oncology group (ECOG) status of 0-2
  • Adequate organ system functions as defined by the laboratory assessments listed as following: Absolute neutrophil count (ANC) >=1.5 x 10^9/L; Hemoglobin >=8.0 g/dL; Platelets >=75 x 10^9/L; Total bilirubin <=1.5 x upper limit of normal (ULN); (Isolated bilirubin >1.5 x ULN is acceptable if bilirubin is fractionated and direct bilirubin is <35%); Alanine aminotransferase (ALT) <=2.5 x ULN; eGFR >=30 mL/minute/1.73 meter^2; Urine Dipstick for protein OR Albumin/creatinine ratio (from spot urine)- Negative/trace (if >=1 plus only eligible if confirmed <=500 mg/gram (56 mg/millimoles [mmol]) by albumin/creatinine ratio (spot urine from first void); Left Ventricular Ejection Fraction (LVEF) by echocardiogram (ECHO) of >=35% participants with low LVEF (per institutional standards), consider referring to cardiology per local standards of care.
  • Sex and Contraception/Barrier Requirements (Female):
  • Contraceptive use by women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least 1 of the following conditions applies:
  • Is NOT a woman of childbearing potential (WOCBP) or Due to lenalidomide being a thalidomide analogue with risk for embryofetal toxicity and prescribed under a pregnancy prevention/controlled distribution program, and bortezomib having the potential to cause fetal harm, WOCBP participants will be eligible if they commit to either: abstain continuously from heterosexual sexual intercourse as their preferred and usual lifestyle (abstinent on a long term and persistent basis) and agree to remain abstinent OR to use birth control as follows: Two methods of reliable birth control (one method that is highly effective and one additional effective (barrier) method), beginning 4 weeks prior to initiating treatment with lenalidomide, during therapy, during dose interruptions and continuing for 4 weeks following discontinuation of lenalidomide treatment. Thereafter, WOCBP participants must use one method of reliable birth control that is highly effective for a further 3 months following discontinuation of belantamab mafodotin, or a further 6 months following discontinuation of bortezomib, whichever is longer. WOCBP must also agree not to donate eggs (ova, oocytes) for the purpose of reproduction during treatment, during dose interruptions and for 28-days following the last dose of lenalidomide, 4 months following discontinuation of belantamab mafodotin treatment or 7-months following the last dose of bortezomib, whichever is longer. Two negative pregnancy tests must be obtained prior to initiating therapy. The first test should be performed within 10-14 days and the second test within 24 hours prior to prescribing the start of lenalidomide therapy.

The participant should not receive lenalidomide until the investigator has verified that the results of these pregnancy tests are negative. The investigator should evaluate the effectiveness of the contraceptive method in relationship to the first dose of study intervention. The Investigator is responsible for review of medical history, menstrual history, and recent sexual activity to decrease the risk for inclusion of a woman with an early undetected pregnancy.

  • Sex and Contraception/Barrier Requirements (Male):
  • Contraceptive use by men should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies
  • Male participants are eligible to participate if they agree to the following from the time of first dose of study treatment until 28-days after the last dose of lenalidomide, 4-months after the last dose of bortezomib, or 6 months after the last dose of belantamab mafodotin, whichever is longer, to allow for clearance of any altered sperm: Refrain from donating sperm - Plus either: - Be abstinent from heterosexual intercourse as their preferred and usual lifestyle (abstinent on a long term and persistent basis) and agree to remain abstinent OR Must agree to use contraception/barrier as detailed below: Agree to use a male condom, even if they have undergone a successful vasectomy, and female partner to use an additional highly effective contraceptive method with a failure rate of <1% per year when having sexual intercourse with a WOCBP. Male participants should also use a condom when having sexual intercourse with pregnant females.
  • Capable of giving signed informed consent.

Exclusion Criteria:

  • Smoldering multiple myeloma (SMM).
  • Prior systemic therapy for multiple myeloma, or SMM. NOTE: An emergency course of steroids (defined as no greater than 40 mg of dexamethasone, or equivalent per day for a maximum of 4 days (that is, a total of 160 mg) is permitted. NOTE: Focal palliative radiation is permitted prior to enrollment, provided that it occurred at least 2 weeks prior to the first dose of study drug, that the participant has recovered from radiation-related toxicities, and that the participant did not require corticosteroids for radiation-induced adverse events.
  • Participant is eligible for high dose chemotherapy with ASCT, as determined by a frailty score of 0 as assessed by the IMWG frailty index.
  • Peripheral neuropathy or neuropathic pain Grade 2 or higher, as defined by the national cancer institute (NCI)-common terminology criteria for adverse events (CTCAE) Version 5.
  • Major surgery within 4 weeks prior to the first dose of study drug.
  • Presence of active renal condition (infection, requirement for dialysis or any other significant condition that could affect participant's safety). Participants with isolated proteinuria resulting from multiple myeloma (MM) are eligible, provided they fulfil criteria.
  • Any serious and/or unstable pre-existing medical, psychiatric disorder or other conditions (including lab abnormalities) that could interfere with participant's safety, obtaining informed consent or compliance to the study procedures.
  • Evidence of active mucosal or internal bleeding uncontrolled by local therapy and not explained by reversible coagulopathy.
  • Current active liver or biliary disease (except for Gilbert's syndrome or asymptomatic gallstones, or otherwise stable chronic liver disease as per the Investigator's assessment).
  • Participants with previous or concurrent malignancies other than multiple myeloma are excluded. Exceptions are surgically treated cervical carcinoma in situ, or any other malignancy that has been considered medically stable for at least 2 years. The participant must not be receiving active therapy, other than hormonal therapy for this disease. Note: Participants with curatively treated non-melanoma skin cancer are allowed without a 2-year restriction.
  • Evidence of cardiovascular risk including any of following: Evidence of current clinically significant untreated arrhythmias, including clinically significant electrocardiogram (ECG) abnormalities including second degree (Mobitz Type II) or third degree atrioventricular (AV) block; History of myocardial infarction, acute coronary syndromes (including unstable angina), coronary angioplasty, or stenting or bypass grafting within 3 months of Screening.; Class III or IV heart failure as defined by the New York Heart Association (NYHA) functional classification system; Uncontrolled hypertension.
  • Active infection requiring treatment.
  • Known human immunodeficiency virus (HIV) infection.
  • Presence of hepatitis B surface antigen (HBsAg), or hepatitis B core antibody (HBcAb), at Screening or within 3 months prior to first dose of study treatment.
  • Positive hepatitis C antibody test result.
  • Current corneal epithelial disease except for mild punctate keratopathy. Note: Participants with mild punctate keratopathy are allowed.
  • Intolerance or contraindications to anti-viral prophylaxis.
  • Unable to tolerate antithrombotic prophylaxis.
  • AL amyloidosis (light chain amyloidosis), active polyneuropathy, organomegaly, endocrinopathy, monoclonal plasma proliferative disorder, skin changes (POEMS) syndrome or active plasma cell leukemia at the time of screening.
  • Exhibiting clinical signs of or has a known history of meningeal or central nervous system involvement by multiple myeloma.
  • Known immediate or delayed hypersensitivity reaction or idiosyncratic reaction to drugs chemically related to belantamab mafodotin, or any of the components of the study treatment.
  • Use of an investigational drug within 14 days or five half-lives (whichever is longer) preceding the first dose of study drug.
  • Plasmapheresis within 7 days prior to the first dose of study drug.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Cohort 1: belantamab mafodotin 1.9 mg/kg Q3/4W + VRd/Rd

Participants will receive 1.9 milligram /kilogram (mg/kg) Q3W dose of belantamab mafodotin on Day 1 of every cycle for the first 8 cycles in combination with VRd and Q4W dose in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 2: belantamab mafodotin 1.4 mg/kg Q6/8W + VRd/Rd

Participants will receive 1.4 mg/kg Q6W dose of belantamab mafodotin on Day 1 of every other cycle for the first 8 cycles in combination with VRd and Q8W dose in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 3: belantamab mafodotin 1.9 mg/kg Q6/8W + VRd/Rd

Participants will receive 1.9 mg/kg Q6W dose of belantamab mafodotin on Day 1 of every other cycle for the first 8 cycles in combination with VRd and Q8W dose in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 4: belantamab mafodotin 1.0 mg/kg Q3/4W + VRd/Rd

Participants will receive 1.0 mg/kg Q3W dose of belantamab mafodotin on Day 1 of every cycle for the first 8 cycles in combination with VRd and Q4W dose in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 5: belantamab mafodotin 1.4 mg/kg Q3/4W + VRd/Rd

Participants will receive 1.4 mg/kg Q3W dose of belantamab mafodotin on Day 1 of every cycle for the first 8 cycles in combination with VRd and Q4W dose in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 6: belantamab mafodotin 1.4mg/kg cycle 1, 1.0 mg/kg Q9/12W Cycle 4+VRd/Rd

Based on emerging data from Cohort 2-5, participants will receive 1.4 mg/kg dose of belantamab mafodotin on Day 1 of cycle 1, followed by 1.0 mg/kg dose on Day 1 of every third cycle from cycle 4 onwards, in combination with VRd for the first 8 cycles and in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 7: belantamab mafodotin 1.9 mg/kg Cycle 1, 1.4 mg/kg Q9/12W Cycle 4+VRd/Rd

Based on emerging data from Cohort 2-5, participants will receive 1.9 mg/kg dose of belantamab mafodotin of cycle 1, followed by 1.4 mg/kg on Day 1 of every third cycle from cycle 4 in combination with VRd for the first 8 cycles and in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 8a : belantamab mafodotin 1.9 mg/kg Cycle 1,4; 1.4 mg/kg Q9/12W from Cycle 7 +VRd/Rd

Based on emerging data from Cohort 6-7, participants will receive 1.9 mg/kg dose of belantamab mafodotin on Day 1 of cycle 1 and cycle 4, followed by 1.4 mg/kg on Day 1 of every third cycle from cycle 7 onwards, in combination with VRd for the first 8 cycles and in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 8b: belantamab mafodotin 1.4 mg/kg Cycle 1,3; 1.0 mg/kg Q9/12W from Cycle 6 +VRd/Rd

Based on emerging data from Cohort 6-7, participants will receive 1.4 mg/kg IV dose of belantamab mafodotin on Day 1 of cycle 1 and cycle 3, then 1.0 mg/kg on Day 1 of every third cycle from cycle 6 in combination with VRd for the first 8 cycles and in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.
Experimental: Cohort 8c: belantamab mafodotin 1.0 mg/kg Cycle 1,5;1.0 mg/kg Q9/12W from Cycle 9 +VRd/Rd

Based on emerging data from Cohort 6-7, participants will receive 1.0 mg/kg IV dose of belantamab mafodotin on Day 1 of cycle 1 and cycle 5, then 1.0 mg/kg on day 1 of every third cycle from cycle 9 in combination with VRd for the first 8 cycles and in combination with Rd from cycle 9 onwards.
Drug: Belantamab mafodotin

Selected doses of belantamab mafodotin will be administered as intravenous infusion.

Drug: Bortezomib

Bortezomib will be administered subcutaneously or intravenously approximately 1 hour after the belantamab mafodotin infusion until Cycle 8.

Drug: Lenalidomide

Lenalidomide will be administered as 25 or 10 mg orally, depending upon renal function.

Drug: Dexamethasone

Dexamethasone will be administered orally as 20 mg in cycles 1-8 and 40 mg in Cycle 9 onwards.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Dose-limiting Toxicities (DLTs) of Belantamab Mafodotin
Time Frame: Up to 63 days

Criteria for DLT included hematologic indicators including Grade(G) 3-5 febrile neutropenia, G4 neutropenia >7 days, G3 or greater thrombocytopenia accompanied by clinically significant bleeding; non-hematologic criteria, including Any G3/4 non-hematologic toxicity, G5 non hematologic toxicity, G3 or greater corneal toxicity; Liver toxicity meeting prespecified GSK liver stopping criteria. Severity was graded using National Cancer Institute - Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0.
Up to 63 days
Number of Participants With Adverse Events (AEs)
Time Frame: Up to approximately 284 weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. AEs were to be coded using the Medical Dictionary for Regulatory Activities (MedDRA) coding system.
Up to approximately 284 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Lenalidomide Relative Dose Intensity (RDI) After Treatment With Belantamab Mafodotin in Combination With VRd
Time Frame: Up to 168 days

Relative Dose Intensity (RDI) is defined as the percentage of the amount of a drug actually delivered (actual dose intensity [DI]) relative to the amount planned (planned DI).
Up to 168 days
Bortezomib RDI After Treatment With Belantamab Mafodotin in Combination With VRd
Time Frame: Up to 168 days

Relative Dose Intensity (RDI) is defined as the percentage of the amount of a drug actually delivered (actual dose intensity [DI]) relative to the amount planned (planned DI).
Up to 168 days
Cumulative Administered Dose of Belantamab Mafodotin After Treatment in Combination With VRd
Time Frame: Up to 84 days

Cumulative Dose is sum of the actual dose administered during each infusion for a participant.
Up to 84 days
Area Under the Concentration Time Curve From 0 to 504 Hours [AUC (0 - 504 Hours)] of Belantamab Mafodotin
Time Frame: Day 1 Cycle 1 Pre-Dose, End of Infusion (EOI); Anytime between Day 8 and Day 15 after Start of Infusion (SOI); Cycle 2 Day 1 Pre-Dose (up to Day 22 or at the end of the Cycle 1 dosing period)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin. The last PK assessment used to derive AUC0-504h was intended to be collected approximately 504 hours (21 days) after the start of the first infusion. Depending on the dosing schedule, this assessment occurred either at the Day 22 visit (±3 days) for participants in the Q6/8W and Q9/12W cohorts or at the Cycle 2 Day 1 pre-dose visit for participants in the Q3W cohorts. Therefore, samples collected at Day 22 or Cycle 2 Day 1 predose represent the protocol-defined PK assessment performed at approximately 504 hours after Dose 1.
Day 1 Cycle 1 Pre-Dose, End of Infusion (EOI); Anytime between Day 8 and Day 15 after Start of Infusion (SOI); Cycle 2 Day 1 Pre-Dose (up to Day 22 or at the end of the Cycle 1 dosing period)
Maximum Plasma Concentration (Cmax) of Belantamab Mafodotin
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)
Time to Reach Cmax (Tmax) of Belantamab Mafodotin
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)
Trough Concentration Prior to the Next Dose for Each Cycle (Ctrough) of Belantamab Mafodotin
Time Frame: Pre-dose at Day 1 of Cycle 1, 2, 3, 4, 5, 7, 10, 13, 14, 15, 16, 17, 23, 24, 27, 28, 29, 30, 31, 34, 36, 37, 41, 43, 49

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin. C-trough were measured prior to the next dose for each cycle.
Pre-dose at Day 1 of Cycle 1, 2, 3, 4, 5, 7, 10, 13, 14, 15, 16, 17, 23, 24, 27, 28, 29, 30, 31, 34, 36, 37, 41, 43, 49
Observed Plasma Concentration at the End of Infusion (C-EOI) of Belantamab Mafodotin
Time Frame: End of infusion at Day 1 on C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C24, C25, C26, C27 (up to approximately 81 weeks)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin.
End of infusion at Day 1 on C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C24, C25, C26, C27 (up to approximately 81 weeks)
Time of Last Observed Quantifiable Concentration (Tlast) of Belantamab Mafodotin
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI); Cycle 2 Day 1 Pre-Dose (up to Day 22 or at the end of the Cycle 1 dosing period)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin. The last PK assessment used to derive Tlast was intended to be collected approximately 504 hours (21 days) after the start of the first infusion. Depending on the dosing schedule, this assessment occurred either at the Day 22 visit (±3 days) for participants in the Q6/8W and Q9/12W cohorts or at the Cycle 2 Day 1 pre-dose visit for participants in the Q3W cohorts. Therefore, samples collected at Day 22 or Cycle 2 Day 1 predose represent the protocol-defined PK assessment performed at approximately 504 hours after Dose 1.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI); Cycle 2 Day 1 Pre-Dose (up to Day 22 or at the end of the Cycle 1 dosing period)
Clearance of Belantamab Mafodotin
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)
Volume of Distribution at Steady State (Vss) of Belantamab Mafodotin
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)
Apparent Terminal Half Life (t1/2) of Belantamab Mafodotin
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of belantamab mafodotin.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)
AUC (0 - 504 Hour) of Cys-mcMMAF
Time Frame: Day 1 Cycle 1 Pre-Dose, End of Infusion (EOI); Anytime between Day 8 and Day 15 after Start of Infusion (SOI); Cycle 2 Day 1 Pre-Dose (up to Day 22 or at the end of the Cycle 1 dosing period)

Blood Samples were collected for Pharmacokinetic analysis of cys-mcMMAF. The last PK assessment used to derive AUC0-504h was intended to be collected approximately 504 hours (21 days) after the start of the first infusion. Depending on the dosing schedule, this assessment occurred either at the Day 22 visit (±3 days) for participants in the Q6/8W and Q9/12W cohorts or at the Cycle 2 Day 1 pre-dose visit for participants in the Q3W cohorts. Therefore, samples collected at Day 22 or Cycle 2 Day 1 predose represent the protocol-defined PK assessment performed at approximately 504 hours after Dose 1.
Day 1 Cycle 1 Pre-Dose, End of Infusion (EOI); Anytime between Day 8 and Day 15 after Start of Infusion (SOI); Cycle 2 Day 1 Pre-Dose (up to Day 22 or at the end of the Cycle 1 dosing period)
Cmax of Cys-mcMMAF
Time Frame: D1 C1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72h; D8-15 post Start of Infusion(SOI); 22d post-SOI; PD & EOI at D1 of C2-7,10,14-17,19,22,26; PD at D1 of C13,18,21,23,24,27-31,34,36,37,39,41,43,46,49; End of Treatment(EOT) (~C52, up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of cys-mcMMAF.
D1 C1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72h; D8-15 post Start of Infusion(SOI); 22d post-SOI; PD & EOI at D1 of C2-7,10,14-17,19,22,26; PD at D1 of C13,18,21,23,24,27-31,34,36,37,39,41,43,46,49; End of Treatment(EOT) (~C52, up to ~234weeks)
Time to Reach Cmax (Tmax) of Cys-mcMMAF
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)

Blood Samples were collected for Pharmacokinetic analysis of cys-mcMMAF.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI);22 days post-SOI;PD&EOI at D1 of C2-7,C10,C14-17; PD at D1 of C13,C23,C24, C27-29, C34, C39, C46; End of Treatment(~C52,up to ~234weeks)
Observed Plasma C-EOI of Cys-mcMMAF
Time Frame: End of infusion at Day 1 on C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C24, C25, C26, C27 (up to approximately 81 weeks)

Blood Samples were collected for Pharmacokinetic analysis of cys-mcMMAF.
End of infusion at Day 1 on C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C24, C25, C26, C27 (up to approximately 81 weeks)
Tlast of Cys-mcMMAF
Time Frame: Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI)

Blood Samples were collected for Pharmacokinetic analysis of cys-mcMMAF.
Day(D)1 Cycle(C)1 Pre-Dose(PD), End of Infusion(EOI), 2, 24, 72 Hours(h);Anytime D8-15 after Start of Infusion(SOI)
Number of Participants With Positive Post-baseline Anti-drug Antibodies (ADAs) Against Belantamab Mafodotin
Time Frame: Up to approximately 234 weeks

Serum samples were collected for the analysis of ADAs of anti-belantamab mafodotin.
Up to approximately 234 weeks
Titers of ADAs Against Belantamab Mafodotin
Time Frame: Up to approximately 234 weeks

Serum Samples were collected for the analysis of ADAs of anti-belantamab mafodotin.
Up to approximately 234 weeks
Overall Response Rate (ORR)
Time Frame: Up to approximately 284 weeks

ORR was defined as the percentage of participants with a confirmed partial response (PR) or better (i.e., PR, very good partial response [VGPR], complete response [CR] and stringent complete response [sCR]), according to the International Myeloma Working Group (IMWG) Response Criteria. CR: negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND <5% plasmacytomas in the bone marrow; sCR: CR as above PLUS normal serum free light-chain (FLC) assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence; VGPR: 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 hour (h); PR: ≥50% reduction of serum M-protein and reduction in 24-h urinary M-protein by ≥90% or to <200 mg/24 h.
Up to approximately 284 weeks
Complete Response Rate (CRR)
Time Frame: Up to approximately 284 weeks

CRR is defined as the percentage of participants with a confirmed complete response (CR) or better (i.e. CR and stringent complete response [sCR]), according to the IMWG Response Criteria. CR: negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND <5% plasmacytomas in the bone marrow; sCR: CR as above PLUS normal serum FLC assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence.
Up to approximately 284 weeks
Percentage of Participants With Confirmed VGPR or Better
Time Frame: Up to approximately 284 weeks

VGPR or better (i.e. VGPR, CR, sCR) is defined as - VGPR: 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: negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND <5% plasmacytomas in the bone marrow; sCR: CR as above PLUS normal serum FLC assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence.
Up to approximately 284 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
GlaxoSmithKline

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: GSK Clinical Trials, GlaxoSmithKline

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 18, 2019

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 2, 2025

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 10, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 13, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 13, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 16, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 9, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 209664
  • 2023-507060-39 (Registry Identifier: CTIS)
  • 2023 (U.S. NIH Grant/Contract)
  • 2019 (U.S. NIH Grant/Contract)
  • 2019-003047-30 (Registry Identifier: EudraCT (EU))
  • 2023-507060-39-00 (Registry Identifier: CTIS (EU))

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

IPD for this study will be made available via the Clinical Study Data Request site.

IPD Sharing Time Frame

IPD will be made available within 6 months of publishing the results of the primary endpoints, key secondary endpoints and safety data of the study

IPD Sharing Access Criteria

Access is provided after a research proposal is submitted and has received approval from the Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months but an extension can be granted, when justified, for up to another 12 months.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings