Hi Munger

Welcome to NeuroTalk .

Recent evidence suggests that Rituximab is less effective than was initially thought in treatment of anti-MAG neuropathy Placebo-controlled trial of rituximab in IgM anti-myelin–associated glycoprotein neuropathy .

Imbruvica is usually used in treatment of some B cell cancers. Peripheral neuropathy is a known side-effect of this Imbruvica Side Effects in Detail - Drugs.com .

These things might be worth discussing with your haematologist.