Takayuki Shiroyama1,2, Hidekazu Suzuki3, Motohiro Tamiya4, Akihiro Tamiya5, Ayako Tanaka3, Norio Okamoto3, Kenji Nakahama5, Yoshihiko Taniguchi5, Shun-Ichi Isa6, Takako Inoue4, Fumio Imamura4, Shinji Atagi6, Tomonori Hirashima3. 1. Department of Thoracic Oncology, Osaka Habikino Medical Center, Osaka, Japan takayuki.s12@hotmail.co.jp. 2. Department of Respiratory Medicine and Clinical Immunology, Graduate School of Medicine, Osaka University, Osaka, Japan. 3. Department of Thoracic Oncology, Osaka Habikino Medical Center, Osaka, Japan. 4. Department of Thoracic Oncology, Osaka International Cancer Institute, Osaka, Japan. 5. Department of Internal Medicine, Kinki-chuo Chest Medical Center, Osaka, Japan. 6. Department of Clinical Research Center, Kinki-chuo Chest Medical Center, Osaka, Japan.
Abstract
BACKGROUND: Recent studies have revealed that liver metastasis is associated with poor outcomes after treatment using immune checkpoint inhibitors, although the cause remains unclear. PATIENTS AND METHODS: We retrospectively identified 201 patients at three Japanese Centers who received nivolumab for advanced non-small cell lung cancer between December 2015 and July 2016. The patients' baseline clinical characteristics and subsequent outcomes were compared according to liver metastasis status. RESULTS: Liver metastasis was associated with inferior progression-free survival (PFS) and a lower response rate. Additionally, liver metastasis was significantly associated with younger age, poorer Eastern Cooperative Oncology Group performance status (ECOG PS), and more metastatic sites. Multivariate analyses revealed that poor PFS was independently associated with poor baseline ECOG PS (p=0.039) and high number of metastatic sites (p=0.007), although liver metastasis (p=0.2) was not. CONCLUSION: Baseline clinical characteristics were a strong predictor of outcome in nivolumab-treated patients with liver metastasis. Copyright
BACKGROUND: Recent studies have revealed that liver metastasis is associated with poor outcomes after treatment using immune checkpoint inhibitors, although the cause remains unclear. PATIENTS AND METHODS: We retrospectively identified 201 patients at three Japanese Centers who received nivolumab for advanced non-small cell lung cancer between December 2015 and July 2016. The patients' baseline clinical characteristics and subsequent outcomes were compared according to liver metastasis status. RESULTS:Liver metastasis was associated with inferior progression-free survival (PFS) and a lower response rate. Additionally, liver metastasis was significantly associated with younger age, poorer Eastern Cooperative Oncology Group performance status (ECOG PS), and more metastatic sites. Multivariate analyses revealed that poor PFS was independently associated with poor baseline ECOG PS (p=0.039) and high number of metastatic sites (p=0.007), although liver metastasis (p=0.2) was not. CONCLUSION: Baseline clinical characteristics were a strong predictor of outcome in nivolumab-treated patients with liver metastasis. Copyright