471
To investigate this hypothesis , we developed hamster - human somatic hybrid cell lines from VCFS / DGS patients with all three classes of deletions and we now show that the breakpoints occur within similar low copy repeats , termed LCR22s .
 VCFS, DGS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 VCFS, DGS