Characterisation and clinical management of CPT-11 (irinotecan)-induced adverse events: the European perspective
Abstract
CPT-11 (Campto, irinotecan) is a promising new agent in the treatment of advanced colorectal cancer. Its safety has been assessed in light of the results from recent European phase II studies. In a pivotal French study in which CPT-11 350 mg/m2 was administered once every 3 weeks, neutropenia and delayed diarrhoea were the major adverse events: transient neutropenia occurred in 80% of patients, and severe neutropenia and febrile neutropenia in 47 and 15%, respectively. Delayed diarrhoea occurred in 87% of patients, with 39% having severe (grade 3 or 4) diarrhoea and 16% requiring hospitalisation. None of these adverse events was cumulative. Results of a pilot study to elucidate the mechanism of CPT-11-induced delayed diarrhoea suggest that this toxicity has a secretory mechanism with an exudative component. Early appropriate management of delayed diarrhoea may improve the safety profile of CPT-11. Indeed, the safety profile of CPT-11 was clearly improved in a later (currently ongoing) pan-European study: incidences of severe (grade 3 or 4) delayed diarrhoea and febrile neutropenia (+/-infection) were reduced from 39% to 23% (grade 4: 8% to 2.5%) and from 12% to 6%, respectively. Such an improvement could be attributed to a bett...Continue Reading
Citations
Effect of liposomalization on the antitumor activity, side-effects and tissue distribution of CPT-11
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