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All-trans-retinoic acid (ATRA) has been proved to be an effective treatment for acute promyelocytic leukemia (APL), inducing remission in more than 90% of cases.
 ( potential therapeutic event: proved ,  more than 90% of cases: Subject, more than 90%: Subject.Population, All-trans-retinoic acid (ATRA): Treatment, acute promyelocytic leukemia (APL): Treatment.Disorder, All-trans-retinoic acid: Treatment.Drug) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( potential therapeutic event: proved ,  more than 90% of cases: Subject, more than 90%: Subject.Population, All-trans-retinoic acid (ATRA): Treatment, acute promyelocytic leukemia (APL): Treatment.Disorder, All-trans-retinoic acid: Treatment.Drug) 