A study found that 10 of 11 IMT tumors contained ALK rearrangements, among which IGFBP5-ALK represented 27% (3/11), THBS1-ALK represented 27% (3/11), FN1-ALK represented 18% (2/11), and TIMP3-ALK represented 9% (1/11) [110]. This evidence concerns the gene FN1 and inflammatory myofibroblastic tumor.