1534
Children with acute lymphoblastic leukemia (ALL), treated with L-asparaginase are at risk for cerebral thrombosis or hemorrhage because of coagulation protein deficiencies.
 adverse event: risk 
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: risk 