Details

Autor(en) / Beteiligte

• Fujimoto, Daichi
• Sato, Yuki
• Morimoto, Takeshi
• Uehara, Keiichiro
• Ito, Munehiro
• Otsuka, Kojiro
• Nagata, Kazuma
• Sakanoue, Ichiro
• Hamakawa, Hiroshi
• Nakagawa, Atsushi
• Takahashi, Yutaka
• Imai, Yukihiro
• Tomii, Keisuke

Titel

Programmed Cell Death Ligand 1 Expression in Non–Small-cell Lung Cancer Patients With Interstitial Lung Disease: A Matched Case-control Study

Ist Teil von

• Clinical lung cancer, 2018-09, Vol.19 (5), p.e667-e673

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2018

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• We conducted a case-control study to evaluate programmed cell death ligand 1 expression in patients with non–small-cell lung cancer (NSCLC) and interstitial lung disease (ILD). Programmed cell death ligand 1 expression and stromal CD8+ lymphocyte density were comparable between NSCLC patients with and without ILD. Thus, programmed cell death protein 1 axis inhibitors might be effective for NSCLC patients with ILD. Programmed cell death protein 1 (PD-1)/programmed cell death ligand 1 (PD-L1) checkpoint inhibitors have demonstrated antitumor activity, and immunohistochemical analysis of PD-L1 expression has been used to identify the response in patients with non–small-cell lung cancer (NSCLC). Recently, considerable interest has ensued toward extending the benefit of these inhibitors to high-risk patients, such as those with NSCLC and interstitial lung disease (ILD). However, no studies have compared PD-L1 expression in NSCLC patients with and without ILD. Therefore, we conducted a case-control study to evaluate PD-L1 expression and stromal CD8+ lymphocyte density in these patients. The data from patients with pathologic stage I or II NSCLC who had undergone surgery from January 2007 to January 2016 were analyzed. We identified 62 patients with pathologic stage I or II NSCLC and ILD. We compared these patients with 1:1-matched cohort. In both groups with and without ILD, approximately 60% were PD-L1+. Tumor cell PD-L1 expression was similar between the groups (median, 1%; interquartile range, 0%-5%; vs. median, 1%; interquartile range, 0%-5%; P = .49). The proportion of patients with positive (≥ 1%) and strongly positive (≥ 50%) PD-L1 expression was also similar between the 2 groups (P = .46 and P = 1.00, respectively). Additionally, the CD8+ lymphocyte density did not differ between patients with and without ILD. PD-L1 expression and stromal CD8+ lymphocyte density were comparable between the NSCLC patients with and without ILD. PD-1 axis inhibitors might be effective for NSCLC patients with ILD.