OS and PFS of all patients. (A) OS of all patients treated at SNUH. (B) OS of all patients treated at SNUH according to first-line chemotherapy. (C) PFS of all patients treated at SNUH. (D) PFS of all patients treated at SNUH according to first-line chemotherapy. (E) OS of all patients enrolled in KCCR. (F) OS of all patients enrolled in KCCR according to first-line chemotherapy. (G) PFS of all patients enrolled in KCCR. (H) PFS of all patients enrolled in KCCR according to first-line chemotherapy.