3020
We have characterized 21 mutations in the type VII collagen gene ( COL7A1 ) encoding the anchoring fibrils , 18 of which were not previously reported , in patients from 15 unrelated families with recessive dystrophic epidermolysis bullosa ( RDEB ) .
 GENE: type VII collagen gene; GENE: COL7A1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: type VII collagen gene; GENE: COL7A1