# Analysis of the Correlation between Immune Cell Subsets in Bronchoalveolar Lavage Fluid and the Efficacy of First-line Use of Immunotherapy in Advanced Non-small Cell Lung Cancer: A Case-control Study

**Authors:** Kai ZHANG, Liang SHI, Tongmei ZHANG, Li TONG, Song WEI, Hongxia LI

PMC · DOI: 10.3779/j.issn.1009-3419.2024.101.32 · Chinese Journal of Lung Cancer · 2024-12-20

## TL;DR

This study explores how immune cell levels in lung fluid relate to the effectiveness of immunotherapy in advanced lung cancer patients.

## Contribution

The study identifies BALF lymphocyte and helper T cell percentages as potential biomarkers for immunotherapy response in NSCLC.

## Key findings

- Higher total lymphocyte percentage in BALF correlates with better immunotherapy outcomes (P<0.05).
- Increased helper T cell percentage in BALF is associated with poorer immunotherapy response (P<0.05).
- A multivariable model combining BALF immune markers improves prediction of treatment efficacy.

## Abstract

免疫治疗已成为晚期非小细胞肺癌（non-small cell lung cancer, NSCLC）患者的标准治疗，但对于接受免疫治疗的晚期NSCLC患者仍缺乏特异性的疗效预测生物标志物，本研究通过探索支气管肺泡灌洗液（bronchoalveolar lavage fluid, BALF）中淋巴细胞亚群情况，并结合NSCLC患者的临床和实验室检查指标，探索潜在的免疫治疗相关性生物标志物。

回顾性分析2020年3月至2022年11月在首都医科大学附属北京胸科医院进行电子支气管镜检查并接受一线免疫治疗的82例局部晚期或晚期NSCLC患者的资料，通过Logistic回归和随机森林模型评估BALF中免疫细胞亚群与疗效的关联，并验证预测模型的敏感性。

入组患者均接受一线免疫治疗，按照临床诊疗规范进行疗效评价：纳入的82例患者中，48例达到客观缓解，34例未达到。对采集的相关指标与临床治疗最佳疗效之间的关系进行分析，结果显示BALF中的总淋巴细胞百分比升高与较好的免疫治疗疗效有关（P<0.05），BALF中的辅助性T细胞百分比的升高与免疫治疗的疗效不佳有关（P<0.05）。

BALF中总淋巴细胞和辅助性T细胞比例可作为晚期NSCLC免疫治疗疗效的重要预测指标，联合其他指标构建的多变量模型可以进一步提高预测准确性。

Patient baseline characteristics

Univariable Logistic analysis

## Linked entities

- **Diseases:** non-small cell lung cancer (MONDO:0005233), NSCLC (MONDO:0005233)

## Full-text entities

- **Diseases:** NSCLC (MESH:D002289)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

5 figures with captions in the complete paper: https://tomesphere.com/paper/PMC11839498/full.md

## References

19 references — full list in the complete paper: https://tomesphere.com/paper/PMC11839498/full.md

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Source: https://tomesphere.com/paper/PMC11839498