21. Often, oncogenic mutations of c-Met cause a resistance to small molecule inhibitors. 22. Subsequently after, other oncogenic human viruses, such as Epstein-Barr virus were discovered. 23. FGFR1 fusions have been detected with BCR and ZFN198, indicating interactions with conventional oncogenic pathways. 24. A possibility is that HAUSP provides an alternative pathway for safeguarding the cell against oncogenic insults. 25. This gene and FGF3, another oncogenic growth factor, are located closely on chromosome 11. 26. Overexpression of E2F1 has been shown to be an oncogenic event that predisposes cells to transformation. 27. Gross'textbook, " Oncogenic Viruses, " was a standard in the field. 28. There are two types of oncogenic retroviruses : acute transforming viruses and non-acute transforming viruses. 29. Gene fusions involving NTRK1 have been shown to be oncogenic , leading to the constitutive TrkA activation. 30. Oncogenic properties of PLK1 are believed to be due to its role in driving cell cycle progression.