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PD-L1 表达与接受根治性放化疗的口咽癌毒性和反应的相关性

英文原题:Correlation of PD-L1 expression with toxicities and response in oropharyngeal cancers treated with definitive chemoradiotherapy.

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Correlation of PD-L1 expression with toxicities and response in oropharyngeal cancers treated with definitive chemoradiotherapy.

PubMed 2022/09/07(内容时间) Contemp Oncol (Pozn) Q4 · IF 1.3(JCR 2025)

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研究概要

PD-L1 阳性表达与较少的急性放射性毒性相关,这可作为潜在的生物标志物。

研究思路结论见上方概要

程序性死亡受体配体1(PD-L1)是一种在肿瘤细胞(TCs)中表达的细胞表面糖蛋白,在TIL(肿瘤浸润淋巴细胞)中亦上调表达。PD-L1在TCs和TIL(肿瘤浸润淋巴细胞)(TILs)中的表达对接受同步放化疗的口咽鳞状细胞癌急性放射性毒性和疗效的影响尚不明确。

本研究前瞻性观察性研究招募了II-IVA期(AJCC第8版)口咽鳞状细胞癌患者。给予根治性放疗(RT),总剂量70 Gy,分35次,每次2 Gy,每周5次,分2个阶段进行,并同步化疗(顺铂40 mg/m²,每周一次)。每周根据Radiation Therapy Oncology Group标准评估患者急性毒性。放疗后3个月根据World Health Organization疗效评估标准进行疗效评估。TC和TIL中programmed death receptor ligand 1的表达与急性毒性和生存相关。

在51例患者中,20例(39.2%)在TCs中表达PD-L1,18例(35.3%)在TILs中表达PD-L1。TCs中表达PD-L1的患者发生≥3级口腔黏膜炎(25% vs. 58%;p = 0.02)和≥3级吞咽困难(25% vs. 55%;p = 0.046)的比例较低。程序性死亡受体配体1-TIL(肿瘤浸润淋巴细胞)阳性患者的≥3级口腔黏膜炎(22% vs. 58%;p = 0.02)和≥3级吞咽困难(17% vs. 58%;p = 0.007)发生率较低。PD-L1-肿瘤阳性组与PD-L1-肿瘤阴性组的2年总生存率和无进展生存率无差异(p > 0.5)。

展开英文摘要原文

Of 51 patients, 20 (39.2%) had PD-L1 expression in TCs and 18 (35.3%) in TILs. Patients with PD-L1 expression in TCs had fewer grade ≥ 3 oral mucositis (25% vs. 58%; p = 0.02) and grade ≥ 3 dysphagia (25% vs. 55%; p = 0.046). The programmed death receptor ligand 1-tumour infiltrating lymphocytes positives had lower ≥ 3 grade oral mucositis (22% vs. 58%; p = 0.02) and ≥ 3 grade dysphagia (17% vs. 58%; p = 0.007). Two-year overall and progression-free survival rate for the PD-L1-tumour-positive vs. PD-L1-tumour-negative group was not different ( p > 0.5).

Positive PD-L1 expression is associated with fewer acute radiation toxicities, and this could be used as a potential biomarker.

论文信息

作者
Srivastava S、Rastogi M、Gandhi AK、Khurana R、Hadi R、Sapru S、Srivastava A、Bharati A
单位
Department of Radiation Oncology, Dr Ram Manohar Lohia Institute of Medical Sciences, Lucknow, India.India
期刊
Contemporary oncology (Poznan, Poland)2022
原文标识
PubMed 36381672 · DOI 10.5114/wo.2022.118227