My husband is a newly diagnosed MM patient in March/2025. He was put on CYBOR D therapy.. A few weeks into the infusion therapy his left leg lost all mobility and is extremely weak. It it not due to any bone issue. It seems to be severe peripheral neuropathy due to the chemo treatments. He was perfectly healthy and active (youngish mid 50's) when this happened. Now he is using a walker and cannot walk on his own. His chemo treatments have been finished for 2 weeks now and he has not noticed an improvement. Has anyone experienced this? Does mobility eventually return?