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We describe the exceptional development of AML and lung cancer in a patient with previously diagnosed CLL in minimal residual disease status after fludarabine treatment followed by autologous peripheral blood stem-cell transplantation.
 adverse event: development 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: development 