Cohen E, Licitra L, Burtness B, Fayette J, Gauler T, Clement P, Grau J, del Campo J, Mailliez A, Haddad R, Vermorken J, Tahara M, Guigay J, Geoffrois L, Merlano M, Cong X, Gibson N, Solca F, Ehrnrooth E, Machiels J. Tumor Biomarker Association With Clinical Outcomes in Recurrent and/or Metastatic Head and Neck Squamous Cell Carcinoma (R/M HNSCC) Patients (Pts) Treated With Afatinib Versus Methotrexate (MTX): LUX-Head & Neck 1 (LHN1). International Journal Of Radiation Oncology • Biology • Physics 2016, 94: 868-869. DOI: 10.1016/j.ijrobp.2015.12.032.Peer-Reviewed Original Research