FFS after initial systemic treatment of chronic GVHD. The dark gray area represents treatment failure due to recurrent malignancy. The light gray area represents treatment failure due to NRM, and the black area represents treatment failure due to treatment change. The white area represents FFS. The dashed line represents cumulative incidence of successful withdrawal of all systemic immunosuppressive treatment (IST) during initial treatment. See Figure 1 in the article by Inamoto et al that begins on page 1363.