On August 23, 2019 GlaxoSmithKline plc (LSE/NYSE: GSK) reported positive headline results from the pivotal DREAMM-2 open-label, randomised study of two doses of belantamab mafodotin (GSK2857916) (Press release, GlaxoSmithKline, AUG 23, 2019, View Source [SID1234538956]).
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The 196 patients in the trial had relapsed multiple myeloma, were refractory to an immunomodulatory drug, a proteasome inhibitor, and to treatment with an anti-CD38 antibody. The two-arm study met its primary objective and demonstrated a clinically meaningful overall response rate with belantamab mafodotin in the patient population. The safety and tolerability profile was consistent with that observed in DREAMM-1, the first time in human study of belantamab mafodotin.
Dr Hal Barron, Chief Scientific Officer and President R&D, GSK said: "I am pleased with the results of the DREAMM-2 study and excited about what these data could mean for patients with multiple myeloma who have exhausted other lines of treatment. We are on track to file belantamab mafodotin later this year and continue to investigate how it could help even more patients with this disease."
Data from the DREAMM-2 study will be the basis for regulatory filings starting later this year.
Multiple myeloma is the second most common blood cancer and is generally considered treatable, but not curable[i]. Research into new therapies is needed as multiple myeloma commonly becomes refractory to available treatments.
Safety and efficacy results from the DREAMM-2 study will be submitted for presentation at an upcoming scientific meeting. Additional ongoing studies are testing the effect of belantamab mafodotin as third-line monotherapy in relapsed/refractory multiple myeloma and as a combination treatment in the first and second line setting as part of the broader DREAMM clinical development programme.
About B-cell maturation antigen (BCMA)
The normal function of BCMA is to promote plasma cell survival by transduction of signals from two known ligands, BAFF (B-cell activating factor) and APRIL (a proliferation-inducing ligand). This pathway has been shown to be important for myeloma cell growth and survival. BCMA expression is limited to B cells at later stages of development. BCMA is expressed at varying levels in myeloma patients and BCMA membrane expression is universally detected in myeloma cell lines[ii].
About the DREAMM clinical trial programme for belantamab mafodotin (GSK2857916)
Belantamab mafodotin is an immuno-conjugate comprising a humanised anti-B cell maturation antigen (BCMA) monoclonal antibody conjugated to the cytotoxic agent auristatin F via non-cleavable linker. The drug linker technology is licensed from Seattle Genetics; monoclonal antibody is produced using technology licensed from BioWa.
Belantamab mafodotin is currently being investigated in patients with multiple myeloma.
Trial Name
GSK ID/NCT ID
Status
Design
DREAMM-1
117159/ NCT02064387
Active, not recruiting
A Phase I Open-label Study to Investigate the Safety, Pharmacokinetics, Pharmacodynamics, Immunogenicity and Clinical Activity of Belantamab Mafodotin (GSK285791) in Subjects with Relapsed/Refractory Multiple Myeloma and Other Advanced Hematologic Malignancies Expressing BCMA
DREAMM-2
205678/ NCT03525678
Active, not recruiting
A Study to Investigate the Efficacy and Safety of Two Doses of Belantamab Mafodotin (GSK2857916) in Subjects with Relapsed/Refractory Multiple Myeloma Who are Refractory to a Proteasome Inhibitor and an Immunomodulatory Agent and Have Failed Prior Treatment with an Anti-CD38 Antibody
DREAMM-3
207495
Planned
A Phase III Open-Label, Randomized Study to Evaluate the Efficacy and Safety of Belantamab Mafodotin (GSK2857916) Compared to Pomalidomide plus low-dose Dexamethasone (Pom/Dex) in Participants with Relapsed/Refractory Multiple Myeloma
DREAMM-4
205207/ NCT03848845
Recruiting
A Phase I/II Single Arm Open-Label Study to Explore Safety and Clinical Activity of Belantamab Mafodotin (GSK2857916) Administered in Combination with Pembrolizumab in Subjects with Relapsed/Refractory Multiple Myeloma
DREAMM-5
208887
Planned
A Phase I/II, Randomized, Open-label Platform Study of Belantamab Mafodotin (GSK2857916) with Innovative Combination Anti-Cancer Treatments in Participants with Relapsed/Refractory Multiple Myeloma
DREAMM-6
207497/ NCT03544281
Recruiting
A Phase I/II Randomized Study to Evaluate Safety, Tolerability and Clinical Activity of Belantamab Mafodotin (GSK2857916) Administered in Combination with Lenalidomide plus Dexamethasone (Arm A), or in Combination with Bortezomib plus Dexamethasone (Arm B) in Subjects with Relapsed/Refractory Multiple Myeloma
DREAMM-7
207503
Planned
A Phase III Study of Belantamab Mafodotin (GSK2857916) Administered in Combination with Bortezomib plus Dexamethasone versus Daratumumab, Bortezomib, and Dexamethasone in participants with relapsed/refractory multiple myeloma
DREAMM-8
207499
Planned
A Phase III, Multicentre, Open-Label, Randomized Study to Evaluate the Efficacy and Safety of Belantamab Mafodotin (GSK2857916) in Combination with Pomalidomide plus Low-Dose Dexamethasone (BPd) versus Pomalidomide plus Bortezomib and Low-Dose Dexamethasone (PVd) in Participants with Relapsed/Refractory Multiple Myeloma
DREAMM-9
209664
Planned
A Phase III Study of Belantamab Mafodotin (GSK2857916) Administered in Combination with Bortezomib plus Lenalidomide and Low-Dose Dexamethasone (VRd) vs. VRd in Participants with Newly Diagnosed Multiple Myeloma who are Ineligible for Transplant
DREAMM-10
207500
Planned
A Phase III Study of Belantamab Mafodotin (GSK2857916) Administered in Combination with a Novel Agent versus SoC
ISS / GSK Co-Sponsored Study
209418
Recruiting
A Phase I/II Dose-escalation and Dose-expansion Study of Belantamab Mafodotin (GSK2857916) Administered in Combination with Pomalidomide plus Low-dose Dexamethasone in Patients with Relapsed/Refractory Multiple Myeloma Who Have Received Two or More Prior Lines of Therapy That Must Have Included Lenalidomide and a Proteasome Inhibitor
Belantamab mafodotin is not currently approved for use anywhere in the world.
GSK in Oncology
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