Do you typically recommend a wash-out period when switching patients with myasthenia gravis from Soliris to Vyvgart?  

Both eculizumab and efgartigimod are extremely expensive drugs with the annual cost being 6 digit $ (ok, efgartigimod is cheaper). Therefore, practically all patients taking eculizumab have gone through the pre-authorization and insurance approval process, and typically their insurance will absorb...