FDA announced approval of Inebilizumab (Uplizna; Amgen), 1st approved Rx for IgG4-related disease (targets CD19+ B cells). IG4-related Dz is estimated to affect 20,000 in the USA. List price is $140,248.50 per dose, After two initial loading doses it is given q 6 mos. https://t.co/aD9yBVJukQ