# Real-world Study of Icotinib in EGFR Mutant Non-small Cell Lung Cancer Based on the Therapeutic Drug Monitoring

**Authors:** Sen HAN, Lan MI, Jian FANG, Xu MA

PMC · DOI: 10.3779/j.issn.1009-3419.2025.102.02 · Chinese Journal of Lung Cancer · 2025-01-20

## TL;DR

This study examines the plasma concentration of Icotinib in patients with EGFR-mutant non-small cell lung cancer and finds a negative correlation between drug concentration and treatment response.

## Contribution

The study provides real-world data on Icotinib plasma concentrations and their association with treatment outcomes in EGFR-mutant NSCLC patients.

## Key findings

- Icotinib plasma concentrations ranged from 126.9 to 2317.1 ng/mL in patients with EGFR-mutant NSCLC.
- Patients with partial response had lower median drug concentrations compared to those with stable disease (P=0.017).
- No significant association was found between drug concentration and treatment-related adverse events.

## Abstract

真实世界中，埃克替尼（Icotinib）治疗携带表皮生长因子受体（epidermal growth factor receptor, EGFR）基因突变的非小细胞肺癌（non-small cell lung cancer, NSCLC）的血浆药物浓度范围尚不明确，药物浓度与其疗效及不良事件之间可能存在关联。本研究通过治疗药物监测（therapeutic drug monitoring, TDM），分析NSCLC靶向治疗中埃克替尼的药物暴露情况，研究埃克替尼的血浆药物浓度与其治疗效果和安全性之间的关系。

前瞻性收集2022年4月至2024年7月在北京大学肿瘤医院接受埃克替尼治疗的伴有EGFR敏感突变的NSCLC患者的血液样本，检测埃克替尼的血浆谷浓度，并结合患者的临床病历资料，进一步探究药物浓度与疗效及其毒副作用之间的关系。

22例接受埃克替尼治疗的患者接受了TDM，但其中1例因停药时间过长药物浓度未检测出。其余21例患者，每人抽血1-7次，共获得32份血浆药物浓度数据。埃克替尼药物浓度为126.9-2317.1 ng/mL。21例患者中女性18例（85.7%），男性3例（14.3%），年龄44-85岁。病理类型均为肺腺癌。除5例接受术后辅助治疗外，接受埃克替尼治疗的16例疗效可评价患者的客观缓解率为43.8%（7/16），疾病控制率为100.0%（16/16）。21例患者埃克替尼的中位药物浓度为805.5 ng/mL。疗效评价为部分缓解的患者和病情稳定者相比，其中位药物浓度分别为497.2和1195.5 ng/mL（P=0.017）。治疗中未发生不良反应的患者和发生过不良反应者，中位药物浓度分别为997.0和828.6 ng/mL（P=0.538）。

埃克替尼在治疗携带EGFR基因突变的NSCLC中表现出较好的疗效且具有可耐受的毒性。埃克替尼的血浆药物浓度与其治疗效果之间具有一定的负性相关，而与安全性无明显的关联。

The adverse reactions of Icotinib

## Linked entities

- **Genes:** EGFR (epidermal growth factor receptor) [NCBI Gene 1956]
- **Chemicals:** Icotinib (PubChem CID 22024915)
- **Diseases:** non-small cell lung cancer (MONDO:0005233), NSCLC (MONDO:0005233)

## Full-text entities

- **Genes:** EGFR (epidermal growth factor receptor) [NCBI Gene 1956] {aka ERBB, ERBB1, ERRP, HER1, NISBD2, NNCIS}
- **Diseases:** lung adenocarcinoma (MESH:D000077192), toxicity (MESH:D064420), Cancer (MESH:D009369), NSCLC (MESH:D002289)
- **Chemicals:** Icotinib (MESH:C531470)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

13 references — full list in the complete paper: https://tomesphere.com/paper/PMC11848650/full.md

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Source: https://tomesphere.com/paper/PMC11848650