8005
Overall , these findings demonstrate that mutations E768D and V804L are gain - of - function mutations that confer to the long RET isoform the capacity to exert a biological effect , although these mutations are more weakly activating than the MEN2A and MEN2B mutations .
 GENE: long RET isoform; GENE: MEN2A; GENE: MEN2B
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: long RET isoform, MEN2A, MEN2B 
Answer:
 GENE: long RET isoform; GENE: MEN2A; GENE: MEN2B