IL2RA and extranodal nasal NK/T cell lymphoma: A 42-year-old man with stage IV NKTCL who relapsed after six cycles of GELOX (gemcitabine, oxaliplatin, and asparaginase) and who did not respond to two cycles of EPOCH (etoposide, prednisone, vincristine, cyclophosphamide, and adriamycin) and two cycles of SMILE (dexamethasone, methotrexate, ifosphamide, asparaginase, and etoposide) was then given two cycles of pegaspargase and anti-IL-2Rα antibody basiliximab (2500 IU/m2 pegaspargase given on day 1 + 20 mg basiliximab given on day 1 and 8, repeated every 3 weeks).