%0 Journal Article %T Successful Treatment of Afatinib-Refractory Non-Small Cell Lung Cancer with Uncommon Complex EGFR Mutations Using Pembrolizumab: A Case Report %A Hideyuki Takeshima %A Hiroaki Ikushima %A Kazuhiro Usui %A Momoko Yamamoto %A Sayaka Ohara %A Toshio Sakatani %A Yuri Taniguchi %J Archive of "Case Reports in Oncology". %D 2019 %R 10.1159/000501848 %K Afatinib %K EGFR uncommon mutation %K Immune-checkpoint inhibitor %K Non-small-cell lung cancer %K Pembrolizumab %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6696780/