Laura Eder-Azanza, Cristina Hurtado, David Navarro-Herrera, Paula Aranaz, Francisco J. Novo, José L. Vizmanos. p.Y317H is a new JAK2 gain-of-function mutation affecting the FERM domain in a myelofibrosis patient with CALR mutation. Haematologica 2017;102(8):e328-e331; https://doi.org/10.3324/haematol.2017.166439.