IL21 and T-cell non-Hodgkin lymphoma: This disorder is linked to a higher risk of death and can lead to enteropathy-associated T-cell lymphoma.1,9 T cells produce IFN-alpha, IFN-gamma, TNF, IL-4, IL-5, and IL-21, which can induce tissue damage in some cases.9 Coeliac disease is linked to a variety of non-Hodgkin lymphomas, including enteropathy-associated T-cell lymphoma.