In rheumatoid arthritis, cells with a phenotype similar to that of gluten‐specific CD4+ T cells were termed peripheral T helper cells due to their expression of multiple markers associated with T‐cell help to B cells, ability to induce B cells into antibody‐producing plasma cells in vitro, and their lack of CXCR5,[20] which distinguishes them from bona fide T follicular helper cells. The gene discussed is CD4; the disease is rheumatoid arthritis.