Detection of the specific fusion gene NAB2::STAT6 and its variants confirm a diagnosis of SFT, especially in infrequent clinical settings, uncommon histological findings or unexpected immunohistochemical profile [1,2,3,4,5,6,7,8,9,10,11,12,15,16,17,18,19,20,21,22,23,24,25]. The gene discussed is STAT6; the disease is solitary fibrous tumor.