1939
The loss of one allele of the p53 gene ( located on chromosome 17p13 ) occurred in at least 6 ( 60 % ) of the 10 patients who were heterozygous at the p53 locus .
 Anatomy: chromosome 17p13
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: chromosome 17p13