PT - JOURNAL ARTICLE AU - TSUTOMU TAKASHIMA AU - SHIGEHIKO NISHIMURA AU - HIDEMI KAWAJIRI AU - YOKO MIZUYAMA AU - TAKEO NISHIMORI AU - SHIGEHITO YAMAGATA AU - SHINYA TOKUNAGA AU - KENJI TEZUKA AU - SEIKA TEI AU - TAKESHI SUNAMI AU - KATSUMI IKEDA AU - YOSHINARI OGAWA AU - SHINICHIRO KASHIWAGI AU - SATORU NODA AU - NAOYOSHI ONODA AU - TETSURO ISHIKAWA AU - SHINZOH KUDOH AU - MINORU TAKADA AU - KOSEI HIRAKAWA AU - MASAICHI OHIRA TI - An Exploratory Phase II Study of Eribulin Re-challenge After Short Term Therapy of 5-Fluorouracil for HER2 Negative, Advanced or Recurrent Breast Cancer AID - 10.21873/anticanres.15315 DP - 2021 Oct 01 TA - Anticancer Research PG - 5007--5014 VI - 41 IP - 10 4099 - http://ar.iiarjournals.org/content/41/10/5007.short 4100 - http://ar.iiarjournals.org/content/41/10/5007.full SO - Anticancer Res2021 Oct 01; 41 AB - Background/Aim: In our previous study, first-line eribulin (ERI) showed 25 weeks of progression-free survival (PFS). This study investigated the efficacy and safety of ERI re-administration in metastatic breast cancer (MBC) patients. Patients and Methods: HER2-negative MBC patients who had never received chemotherapy for MBC received first-line ERI for 18 weeks if they did not have disease progression, and then one cycle of S-1 before ERI re-administration. Results: Twelve patients received ERI re-administration. The PFS of re-administered ERI was 13 weeks. Total duration of ERI use was 30 weeks. The incidence and severity of adverse events were consistent with previous reports. Conclusion: In the first-line setting, the total PFS of eribulin was extended by S-1 administration before disease progression, compared with that of our previous report.