- EGFR mutation status is unknown but tumor is positive for at least one alternative driver mutation, i.e: Kirsten rat sarcoma viral oncogene homolog (KRAS) mutation, v-raf murine sarcoma viral oncogene homolog B (BRAF) mutation, human epidermal growth factor receptor 2 (HER2) mutation, ret proto-oncogene (RET) rearrangement/fusion, or one not listed following approval by the study chair prior to registration