Until recently the role of chemotherapy in NSCLC has generally been questio
ned. Major concerns included marginal activity, considerable toxicity and h
igh cost of this treatment. There has, however, been increasing evidence fr
om individual studies and meta-analyses that chemotherapy in advanced NSCLC
is able to increase survival and improve quality of life. In the past few
years a series of active drugs (paclitaxel, docetaxel, gemcitabine, vinorel
bine, topotecan and irinotecan) with novel mechanisms of action and favoura
ble toxicity profiles have been developed. These agents appear to hold the
promise of added therapeutic benefit. In consequence, chemotherapy has curr
ently been considered an important part of the standard treatment in select
ed patients with advanced NSCLC. Despite recent developments, treatment out
comes in advanced NSCLC remain far from satisfactory, and new effective mea
ns are desperately needed if more patients are to enjoy the prospects of lo
ng-term survival.