Irinotecan in advanced lung cancer: focus on North American trials

New agents with improved systemic activity are needed for the treatment of lung cancer. Irinotecan (Camptosar) is a promising agent in advanced non-small-cell (NSCLC) and small-cell lung cancer (SCLC). In a Japanese phase III trial of advanced NSCLC, irinotecan or irinotecan/cisplatin demonstrated a significant survival advantage compared to the standard of vindesine/cisplatin. Similar North American phase III trials focusing on irinotecan's role in NSCLC are under way. Ongoing trials have also been launched to corroborate the significant survival advantage reported by a Japanese phase III trial for irinotecan/cisplatin vs standard etoposide/cisplatin in extensive SCLC. Current and planned trials in NSCLC with irinotecan in combination with gemcitabine (Gemzar), the taxanes, and other new agents, and thoracic radiotherapy should also provide useful clinical data. Moreover, trials in SCLC are investigating the rationale of combining irinotecan with a platinum agent as a component of chemoradiotherapy regimens. Promising data from these and other studies will further elucidate a role for irinotecan in the management of lung cancer.