Pembrolizumab for Bone Metastases in Advanced NSCLC

Pembrolizumab Monotherapy or Combination Therapy for Bone Metastases in Advanced Non-Small Cell Lung Cancer

A Real-World Retrospective Study

Huiping Qiang; Yuqiong Lei; Yinchen Shen; Jiaqi Li; Hua Zhong; Runbo Zhong; Xueyan Zhang; Qing Chang; Jiahuan Lu; Hui Feng; Yan Zhu; Alfredo Addeo; Giuseppe L. Banna; In-Jae Oh; Jialin Qian; Tianqing Chu

Disclosures

Transl Lung Cancer Res. 2022;11(1):87-99. 

In This Article

Abstract and Introduction

Abstract

Background: The incidence of bone metastases in non-small cell lung cancer (NSCLC) patients is about 30–40% and bone-related events can seriously affect quality of life. Immune checkpoint inhibitor (ICI) therapy has become the standard treatment for advanced NSCLC patients. However, the specific efficacy of ICIs in NSCLC patients with bone metastases remains unclear. The aim of the present study was to explore the prognosis of immunotherapy in this population and to find potential biomarkers.

Methods: In this retrospective study, a total of 110 advanced NSCLC patients with bone metastases who received pembrolizumab therapy were enrolled. Patient characteristics; palliative bone radiotherapy or bone-targeted therapy; serum levels of lactate dehydrogenase (LDH), and the neutrophil-to-lymphocyte ratio (NLR) at baseline were assessed. The correlation of these factors with progression-free survival (PFS), overall survival (OS), and objective response rate (ORR) was analyzed.

Results: The ORR of the total population was 29.1%, and PFS and OS were 7.0 and 14.8 months, respectively. Fifty-eight patients (52.7%) received pembrolizumab treatment as first-line therapy, and 52 patients (47.3%) as second-line therapy or beyond [ORR: 41.4% vs. 15.4%, P=0.011; PFS: 9.0 vs. 4.0 months, P=0.004; OS: not reached (NR) vs.11.5 months, P<0.0001]. Bone therapy, including palliative bone radiotherapy and bone-targeted therapy, increased the ORR (34.9%

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