CXCR4 PET/CT for Predicting Outcome in Limited-Stage Small Cell Lung Cancer

This was a single-center, prospective observational study conducted at Shandong Cancer Hospital and Institute to investigate the prognostic value of CXCR4-targeted PET/CT imaging in patients with limited-stage small cell lung cancer (LS-SCLC). Eligible patients with histologically confirmed LS-SCLC underwent \[18F\]AlF-NOTA-QHY-04 PET/CT imaging prior to standard concurrent chemoradiotherapy. PET/CT parameters reflecting CXCR4 expression were measured and analyzed. Patients were subsequently followed up according to routine clinical practice. Clinical outcomes, including progression-free survival and overall survival, were recorded during follow-up. The association between baseline CXCR4 PET/CT imaging findings and clinical outcomes was evaluated to explore the potential role of CXCR4-targeted PET/CT as a prognostic imaging biomarker in LS-SCLC.