473
In order to define the types of disease - causing ATM mutations in Japanese A - T patients as well as to look for possible mutational hotspots , reverse - transcribed RNA derived from ten patients belonging to eight unrelated Japanese A - T families was analyzed for mutations by the restriction endonuclease fingerprinting method .
 Disease: A - T; Disease: A - T
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: A - T; Disease: A - T