The prognostic value of beta-1 blockers in patients with non-small-cell lung carcinoma treated with pembrolizumab

Background: Immune checkpoint inhibitors (ICIs) such as pembrolizumab have revolutionized the treatment of metastatic non-small cell lung cancer (mNSCLC). Beta-adrenergic activation contributes to cancer initiation and progression. While non-selective beta-blocker were found to improve the efficacy of ICIs therapy, the role of beta-1 (β₁)-selective -blocker (β₁B) in lung cancer patients is unknown. Objective: To evaluate the effect of β₁B on overall survival (OS) and progression-free survival (PFS) in patients diagnosed with mNSCLC and treated with pembrolizumab. Methods: We performed a retrospective analysis of patients diagnosed with mNSCLC and treated with first-line pembrolizumab at our center. Results: Of 200 eligible patients, 53 (27%) were pretreated with β₁B. Patients in the β₁B cohort were older (73 ± 8 vs. 67 ± 10 years, p < 0.001) with a higher prevalence of cardiac risk factors and cardiovascular (CV) diseases including ischemic heart disease (32% vs. 16%, p = 0.010), heart failure (9% vs. 3%, p = 0.043) and atrial fibrillation (23% vs. 3%, p < 0.001). Compared to the non-β₁B group, patient pretreated with β₁B had a significant shorter median OS (12 vs. 24 months, p = 0.004) and PFS (6 vs. 8 months, p < 0.001). In a multivariate analysis, including all CV risk factors and diseases, the use of baseline β₁B was a strong and independent predictor for accelerated disease progression (HR 1.92, 95%CI 1.32–2.79, p < 0.001) and shorter OS (HR 1.8, 95%, CI 1.18–2.75, p = 0.007). Conclusions: The use of baseline β₁B showed a strong and independent association for shorter OS and PFS in patients diagnosed with mNSCLC and treated with pembrolizumab.