A Study of Ixazomib, Given With Dexamethasone in Adults With Multiple Myeloma

Study Summary

The main aim of this study is to learn if ixazomib, given with dexamethasone, stops the cancer from getting worse in people with relapsed or refractory multiple myeloma. It will be compared to another medicine called pomalidomide, given with dexamethasone with people with the same condition. Relapsed means the previous cancer treatment stopped working, over time. Refractory means they did not respond to previous cancer treatment. Another aim is to check for side effects from the study medicines. At the first visit, the study doctor will check who can take part. Participants who can take part will be picked for 1 of 2 treatments by chance. * Ixazomib capsules, given with dexamethasone tablets * Pomalidomide capsules, given with dexamethasone tablets All participants will take their study medicine on specific days during a 28-day cycle. The 1st dose of study medicines in each 28-day cycle will take place in the clinic, The other doses of the study medicines will be taken at home. This will happen for 6 cycles. After this, all study medicines will be taken at home. After treatment, participants will visit the clinic every 12 weeks for a check-up. If participants cannot attend their clinic for an important reason (for example, due to the COVID-19 pandemic), the clinic will make alternative arrangements using their local procedures.

Primary Outcome

PFS: Time from randomization to first occurrence of confirmed progressive disease (PD) as assessed by investigator by International Myeloma Working Group(IMWG) response criteria/death from any cause, whichever occurs first. PD requires following: Increase of \>=25 % from nadir in: Serum M component (increase must be \>=0.5 gram per deciliter \[g/dl\]); Urine M-component (increase must be \>=200 milligram \[mg\]/24-hour); In participants without measurable serum and urine M-protein levels differe

Interventions

• DRUG Dexamethasone
• DRUG Pomalidomide
• DRUG Ixazomib