MDK and neoplasm: Consistent with the data from the RNAseq analysis, three HER2 fusion genes—ZNF207 (exon 1–2)/HER2 (exon 18–30), MDK (exon 1–4)/HER2 (exon 11–30), and NOS2 (exon 1–2)/HER2 (exon 2–30)—were further confirmed in these tumor DNA samples (Figure 2).