We identified four NRG1 fusions of the form (geneA)-NRG1, that were both predicted from DNA rearrangement junctions and found in RNA sequence reads: WRN-NRG1, FAM91A1-NRG1, ARHGEF39-NRG1, and ZNF704-NRG1 (Supplementary Table 3, which also gives tumour subtypes and other known driver mutations). This evidence concerns the gene ARHGEF39 and neoplasm.