The complete MCPyV genome from MCPyV-positive NSCLCs was sequenced as described in a previous study (31). However, PCR amplification of full-length MCPyV genomes was successful for only one of the 34 MCPyV-positive samples, and the abovementioned Korean-specific mutations have not been reported in other strains. Analysis of the MCPyV sequence revealed it to be 98% to 99% identical to that of the MCV strains 350 and KIB. In addition, the full-length MCPyV genome is 5,417 bp long, the same length as that of KIB. The MCPyV genomes reported in this study have been deposited under GenBank accession number OQ616757.