Seung Ho Lee, Ji Sun Kim, Jaesang Kim, Seok Jin Kim, Won Seog Kim, Sanghyuk Lee, Young Hyeh Ko, Hae Yong Yoo. A highly recurrent novel missense mutation in CD28 among angioimmunoblastic T-cell lymphoma patients. Haematologica 2015;100(12):e505-e507; https://doi.org/10.3324/haematol.2015.133074.