Hi, everyone. I genotyped cancer samples and matched normal samples using Affymetrix 6.0, and I do not know the purity of the tumor. Some results is very bad, because there is one that only 200 SNP are different between tumor and matched normal, in general, this number is 2000. I wonder the sensitivity of Affymetrix6.0 chip? Because I think the purity of my tumor sample should be over 50%. Affymetrix chip can not detect 50% purity?