An Observational Study Evaluating the Safety of Neoadjuvant Immunotherapy Combined With Chemotherapy in Patients Undergoing Surgery for Non-Small Cell Lung Cancer.

Objective: This study was conducted to investigate the safety of neoadjuvant immunotherapy combined with chemotherapy in patients undergoing surgery for resectable stage III non-small cell lung cancer (NSCLC).

Methods: Overall, 68 surgical patients with stage III NSCLC who underwent neoadjuvant therapy at the Thoracic Surgery Department of Beijing Chaoyang Hospital from June 2019 to September 2021 were included, including 19 patients who underwent neoadjuvant chemotherapy combined with immunotherapy and 49 who underwent neoadjuvant chemotherapy alone. Both groups of patients were diagnosed with NSCLC before treatment and had resectable stage III tumors. The surgical duration, blood loss volume, average postoperative hospital length of stay, intensive care unit length of stay, and complication rate were compared between the two groups.

Results: The group treated with neoadjuvant chemotherapy combined with immunotherapy demonstrated higher values than the group treated with chemotherapy alone for surgical duration, blood loss volume, and rate of conversion to thoracotomy; however, the differences were not statistically significant. The incidence of postoperative complications in the group treated with neoadjuvant immunotherapy combined with chemotherapy was significantly higher than that of the group treated with neoadjuvant chemotherapy alone (p = 0.02).

Conclusion: Neoadjuvant immunotherapy combined with chemotherapy was safe and effective and did not increase the difficulty of surgery for NSCLC; however, it was associated with a higher incidence of complications than neoadjuvant chemotherapy alone (p < 0.05).