RT Journal Article SR Electronic T1 Efficacy and Safety of Amrubicin Monotherapy After Chemoradiotherapy in Patients With Relapsed Limited Disease Small-cell Lung Cancer JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 733 OP 741 DO 10.21873/anticanres.17461 VO 45 IS 2 A1 MATSUKIDA, AKIRA A1 IMAI, HISAO A1 SHIONO, AYAKO A1 RYUNO, YASUHIRO A1 HASHIMOTO, KOSUKE A1 MIURA, YU A1 ENDO, SATOSHI A1 OKAZAKI, SHOHEI A1 YAMAGUCHI, OU A1 MOURI, ATSUTO A1 ABE, TAKANORI A1 KAIRA, KYOICHI A1 KOBAYASHI, KUNIHIKO A1 KATO, SHINGO A1 KAGAMU, HIROSHI YR 2025 UL http://ar.iiarjournals.org/content/45/2/733.abstract AB Background/Aim: Amrubicin is recognized as a second-line treatment for refractory small-cell lung cancer (SCLC) and is administered immediately after chemotherapy; however, it has not been evaluated in patients with recurrent SCLC following chemoradiotherapy (CRT). This study aimed to examine the activity and safety of amrubicin monotherapy in patients with relapsed SCLC previously treated with CRT. Patients and Methods: This retrospective study evaluated patients with relapsed SCLC who had been previously treated with CRT, followed by amrubicin monotherapy between April 2007 and June 2021. The clinical efficacy and toxicity were assessed. Results: Overall, 30 patients (20 men and 10 women) were enrolled. The response rate was 50.0% [95% confidence interval (CI)=33.1-66.8%]. The median progression-free survival and overall survival from the first amrubicin treatment was 4.1 months (95%CI=2.3-6.0 months) and 13.5 months (95%CI=7.5-16.0 months), respectively. Grade ≥3 hematological adverse events occurred as follows: decreased white blood cells in 63.3% of patients, decreased neutrophil count in 70.0%, and febrile neutropenia in 10.0%. Grade 3 pneumonitis was observed in one patient. No treatment-related deaths occurred. Conclusion: Amrubicin is both feasible and effective in patients with relapsed SCLC who were previously treated with CRT. The efficacy and toxicity of amrubicin in this study were consistent with those of previous reports, indicating that amrubicin retained its effectiveness post-CRT. Consequently, amrubicin following CRT may be the optimal chemotherapeutic choice for patients with relapsed limited-disease SCLC.