High Fluorodeoxyglucose Uptake on Positron Emission Tomography in Patients with Advanced Non–Small Cell Lung Cancer on Platinum-Based Combination Chemotherapy

Abstract

Purpose: To evaluate response and survival for platinum-based combination chemotherapy in chemonaive patients with non–small cell lung cancer (NSCLC) according to pretreatment standardized uptake values (SUV) by fluorodeoxyglucose positron emission tomography. Experimental Design: Patients with advanced NSCLC who had not previously received chemotherapy were eligible. Response rates and survivals were analyzed according to maximal SUVs [low (≤7.5) versus high (>7.5), where 7.5 was the median value] before the first cycle of chemotherapy. Results: Eighty-five consecutive patients were included in the retrospective study. Patients with high SUV tumors exhibited significantly higher response rates (34.1% for low SUVs versus 61.0% for high SUVs; P = 0.013). Other factors, including sex, age, histology, performance status, number of involved organs, regimens used, and disease stage, did not affect response. However, high SUVs were related with a shorter response duration (279 days for low SUVs versus 141 days for high SUVs; P = 0.003) and time to progression (282 days for low SUVs versus 169 days for high SUVs; P = 0.015). Overall survival was unaffected by maximal SUVs (623 days for low SUVs versus 464 days for high SUVs; P = 0.431). Conclusions: Patients having NSCLC with high maximal SUVs showed a better response to platinum-based combination chemotherapy but had a shorter time to progression. Tumor glucose metabolism, as determined by SUVs on fluorodeoxyglucose positron emission tomography, was found to discriminate NSCLC subsets with different clinical and biological features.