We therefore assessed, using treatment with the ER stress inducer tunicamycin and subcellular fractionation, whether FKBP11 localized to the ER and was upregulated by ER stress in the B lymphocyte cell line Raji (derived from Burkitt’s lymphoma) and in A549 cells (derived from lung adenocarcinoma). This evidence concerns the gene FKBP11 and Burkitt lymphoma.