In addition, in the case of YCU-SDC-20 with an AR positive primary tumor, we found that the transcription profiles of YCU-SDC-20 and YCU-SDC-20 PDX/YCU-SDC-20X did not correlate well, while those of YCU-SDC-20 PDX and YCU-SDC-20X correlated very well. The gene discussed is AR; the disease is neoplasm.