6004
The DNA change , 2418delA , is considered a mutation that inactivated one BRCA1 allele because it caused a frameshift and generation of a premature stop codon , resulting in synthesis of a truncated peptide as evidenced by an in vitro protein truncation test.
 DNA: BRCA1; DNA: premature stop codon
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: BRCA1, premature stop codon 
Answer:
 DNA: BRCA1; DNA: premature stop codon