One patient with an EGFR mutation also showed an EML4-ALK translocation, and both FISH-positive and FISH-negative cells maintained the EGFR mutation.     ///    EGFR mutation analysis can be performed on the same sample previously submitted to the EML4-ALK FISH procedure..     ///    Molecular determinations of EGFR and EML4-ALK on a single slide of NSCLC tissue..     ///    "FISH analysis was performed on one cytological or histological sample to determine EML4-ALK status, after which the same cells scraped off each slide were used to evaluate the EGFR status. "