6540
Bortezomib - induced paralytic ileus is a potential gastrointestinal side effect of this first - in - class anticancer proteasome inhibitor .
 gastrointestinal side effect, Bortezomib; paralytic ileus, Bortezomib
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 gastrointestinal side effect, Bortezomib; paralytic ileus, Bortezomib