This is a research study to find out if a drug called belantamab mafodotin in combination with dexamethasone, a steroid, can be safely and effectively given in the community setting. Belantamab mafodotin (BLENREP) was approved in the US in August 2020 under an FDA program called accelerated approval. In November 2022, belantamab mafodotin was removed from the market because a study to further confirm its activity in relapsed/refractory multiple myeloma did not deliver a supporting result. However, this confirmatory study demonstrated that some patients may still benefit from treatment with belantamab mafodotin, and that this benefit can be long lasting. Belantamab mafodotin is often given at large academic medical centers every 3 weeks. This study will assess whether it is possible to administer belantamab in the community setting every 6 weeks. It is unknown if administering belantamab every 6 weeks versus every 3 weeks will result in improved safety and/or reduced efficacy.
1. Participant must have histologically or cytologically confirmed diagnosis of MM as defined by IMWG, 2016 criteria, have had at least 4 prior therapies, and is relapsed or refractory to an anti-CD38 antibody, an IMID, and a proteasome inhibitor.
Refractory myeloma is defined as disease that is nonresponsive while on therapy or progresses within 60 days of last therapy. Nonresponsive disease is defined as either failure to achieve at least minimal response or development of progressive disease (PD) while on any therapy.
A postmenopausal state is define as no menses for 12 months without an alternative medical cause. A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a postmenopausal state in women not using hormonal contraception or hormonal replacement therapy (HRT). However, in the absence of 12 months of amenorrhea, confirmation with more than one FSH measurement is required.
Females on HRT and whose menopausal status is in doubt will be required to use of the non-estrogen hormonal highly effective contraception methods if they wish to continue their HRT during the study. Otherwise, they must discontinue HRT to allow confirmation of postmenopausal status before study enrollment.
1. Participant must not have current corneal epithelial disease except mild changes in corneal epithelium 2. Participant must not have current unstable liver or biliary disease defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminemia, esophageal or gastric varices, persistent jaundice, or cirrhosis. NOTE: Stable non-cirrhotic chronic liver disease (including Gilbert's syndrome or asymptomatic gallstones) or hepatobiliary involvement of malignancy is acceptable if otherwise meets entry criteria 3. Participant must not have presence of active renal condition (infection, requirement for dialysis or any other condition that could affect participant's safety). Participants with isolated proteinuria resulting from MM are eligible, provided they fulfil inclusion criteria 4. Participant unwilling to forego use of contact lenses while participating in this study 5. Participant must not be simultaneously in any other therapeutic clinical trial without permission of the Sponsor 6. Participant must not have used an investigational drug or approved systemic anti-myeloma therapy (including systemic steroids) within 14 days or five half-lives, whichever is shorter, preceding the first dose of study drug and to have recovered from any drug-related drug toxicity to at least Grade 1 7. Participant must not have had plasmapheresis within 7 days prior to first dose of study treatment 8. Participant must not have received prior treatment with a monoclonal antibody within 30 days of receiving the first dose of study drugs 9. Participant must not have had major surgery ≤ 4 weeks prior to initiating study treatment 10. Participant must not have any evidence of spontaneous mucosal or internal bleeding 11. Participant must not have had prior allogenic stem cell transplant. NOTE: Participants who have undergone syngeneic transplant will be allowed only if no currently active GvHD.
Established anti-retroviral therapy (ART) for at least 4 weeks and HIV viral load <400 copies/mL
CD4+ T-cell (CD4+) counts ≥350 cells/uL
No history of AIDS-defining opportunistic infections within the last 12 months NOTE: consideration must be given to ART and prophylactic antimicrobials that may have a drug: drug interaction and/or overlapping toxicities with belantamab mafodotin or other combination products as relevant (See section 4.3, Concomitant Therapy) 16. Participant must not have 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. Note: presence of Hep B surface antibody (HBsAb) indicating previous vaccination will not exclude a participant.
Cristiana Costa Chase, DO
Lead sponsor
Duke University
Sponsor institution