There are some pseudogenes which shows significant expression difference in enhanced metastasis and chemoresistant ovarian cancer cell lines, in which BC031676 and BC113708 are up-regulated, and RPL28P1, RPL23A, RPL13AP3, LOC341412, LOC641784, LOC391560, RPS16P9, LOC732186, RPL13AP23, RPLP1P7, RPL31P10, LOC648361 are down-regulated, and most of them are ribosomal protein pseudogenes. This evidence concerns the gene RPL23A and ovarian cancer.