EGFR and non-small cell lung carcinoma: The prevalence of HGF or MET in tissues has also been described in NSCLC tumors with wild-type EGFR. Positive intratumoral HGF expression was identified in 57% of 104 specimens using an anti-HGF antibody (sc-7949, Santa Cruz) according to the IHC Allred scoring system, and expression was associated with poor OS [56].