How do you treat CIDP patients unresponsive to IVIG and steroids?  

As a general rule, if a patient tentatively diagnosed with CIDP does not respond to an adequate trial of corticosteroids (e.g. 1 mg/kg prednisone daily for 1 month, or pulse methylprednisolone 500-1000 mg weekly for at least 4 weeks), and IVIG (loading dose of 2 g/kg, followed by 1 g/kg every 3 we...