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 gSTM1 , GSTT1 , GSTP1 , and GSTA1 genetic variants associated with coronary artery disease in Taiwan?
Answer: The GST genetic variants examined were not associated with susceptibility to CAD in our Taiwanese cohort. This null association requires further confirmation with larger samples.
no