Overall, the non-lymphoid tumours [osteosarcomas (n = 3), rhabdomyosarcoma (n = 1), malignant fibrous histiocytomas (n = 9), hamartoma (n = 1) and one undefined], were Testin-positive with only one testin-negative tumor [1 of 15 (7%); data not shown] compared to 42 of 88 (48%) lymphomas being negative for Testin protein (Fisher’s exact test; P = 0.0018) (Supplementary Table S1). This evidence concerns the gene TES and histiocytoma.