Objective: To investigate the efficacy and safety of the combination therapy with chemotherapy, programmed death-1 (PD-1) inhibitor and anlotinib in the treatment of advanced dedifferentiated liposarcoma (DDLPS). Methods: The clinical data of patients with dedifferentiated liposarcoma who received chemotherapy combined with PD-1 inhibitor and anlotinib in the Department of Medical Oncology, Zhongshan Hospital Affiliated to Fudan University from January 1, 2020 to November 30, 2021 were retrospectively analyzed. A total of 24 patients were included in this study, including 12 males and 12 females, with a median age of onset of 56 years (range, 31-69 years). Efficacy and safety in those patients were assessed. Results: All patients had unresectable or metastatic dedifferentiated liposarcoma with G2 (moderate differentiation) or G3 (differential differentiation) in a concise three-grade grading scheme of tumor pathology. Twelve patients received the regimen as the first-line treatment, while the other 7 taken the regimen as second-line treatment and 5 as third-line or above. The median follow-up time for overall survival (OS) was 7.7 months. The overall response rate (ORR) was 20.8% (5/24) and disease control rate (DCR) was 83.3% (20/24) with 5 partial response (PR), 15 stable disease (SD) and 4 progressive disease (PD). Overall, the median progression-free survival (PFS) was 4.9 months (95%CI: 3.4-16.2 months). The ORR of anthracycline-based, eribulin-based or gemcitabine-based regimens was 1/12, 2/6 and 2/6, respectively; and the median PFS was 7.7, 7.3 and 4.4 months, respectively. Waterfall plots showed notable tumor shrinkage of any degree in eribulin and gemcitabine-based regimens(3/6 and 2/6, respectively), while there were more patients presented with SD in anthracycline-based group(9/12). Common adverse reactions included myelosuppression, fatigue, anorexia, rash, pruritus, palpitate, hypothyroidism and hypertension. Conclusions: The combination regimen with chemotherapy, PD-1 inhibitor and anlotinib in the treatment of advanced DDLPS is effective and well tolerable. There are more responders in eribulin or gemcitabine-based regimens.
目的： 探讨化疗联合程序性细胞死亡受体1（PD-1）抗体和安罗替尼对晚期去分化脂肪肉瘤的疗效及安全性。 方法： 回顾性分析2020年1月1日至2021年11月30日在复旦大学附属中山医院肿瘤内科接受化疗联合免疫PD-1抗体和安罗替尼治疗的去分化脂肪肉瘤患者的临床资料，共24例患者纳入研究，其中男12例，女12例，中位发病年龄56岁（31~69岁）。分析其疗效和安全性。 结果： 患者均为肿瘤病理简明三级分级方案中G2（中分化）或G3（差分化）的不可切除或转移性去分化脂肪肉瘤。一线治疗12例，二线治疗7例，三线及以上治疗5例。中位随访时间7.7个月，客观缓解率为20.8%（5/24），疾病控制率为83.3%（20/24），5例部分缓解，15例疾病稳定，4例进展。24例患者中位无进展生存期为4.9个月（95%CI：3.4~16.2个月）。以蒽环类药物、艾立布林或吉西他滨为基础的联合治疗的客观缓解率分别为1/12、2/6和2/6，中位无进展生存期分别为7.7、7.3和4.4个月。瀑布图显示蒽环类为基础治疗患者更多表现为疾病稳定（9/12），而艾立布林和吉西他滨为基础治疗更多出现缩瘤（3/6和2/6）。常见不良反应有骨髓抑制、乏力、纳差、皮疹、皮肤瘙痒、心悸、甲状腺功能减退、高血压等。 结论： 化疗联合PD-1抗体和安罗替尼治疗晚期去分化脂肪肉瘤疗效确切，不良反应可耐受。艾立布林和吉西他滨为基础的联合治疗缩瘤效果更佳。.