Q: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Question: Are single nucleotide polymorphisms in AGTR1 , TFAP2B , and TRAF1 associated with the incidence of patent ductus arteriosus in Japanese preterm infants?
Answer: There were no significant associations between the studied SNP and the incidence of PDA in Japanese preterm infants. These SNP may not be clinically important predisposing factors for PDA in Japanese preterm infants.
A:
no