Uses of H.P. Acthar Gel in the Clinical Setting

To the Editor We read with interest a Research Letter published in a recent issue of JAMA Internal Medicine by Hartung et al.¹ Mallinckrodt, manufacturer of repository corticotropin injection (H.P. Acthar Gel [Acthar]), is dedicated to providing appropriate treatment options for patients with inflammatory and autoimmune diseases, and we would like to share our view on Acthar.²