Tehran University of Medical Sciences International Journal of Hematology-Oncology and Stem Cell Research 2008-2207 11 3 2017 07 01 185 191 EN Shaghayegh Sarrafzadeh Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran Lobat Geranpayeh Department of Surgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran Soudeh Ghafouri-fard Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran 2017 01 08 2017 07 01 Background: The prostate cancer-associated non-coding RNA transcript 1 (PCAT-1) is a newly identified long non- coding RNA whose participation in tumorigenesis of a variety of cancers has been observed. In the present study, we aimed at analysis of its expression in breast cancer patients. Subjects and Methods: The expression of PCAT-1 was assessed using real-time reverse transcription polymerase chain reaction in tumor samples obtained from 47newly diagnosed breast cancer patients as well as their corresponding adjacent non-cancerous tissues (ANCTs). Results: We detected significant over-expression of PCAT-1 in 12/47 (25.5%) of tumoral tissues compared with their corresponding ANCTs. However, no significant association has been found between the levels of PCAT-1 transcripts and patients’ clinical data such as tumor size, stage, grade, estrogen and progesterone receptors or Her2/neu status. Conclusion: PCAT-1 is possibly involved in the pathogenesis of fraction of breast cancers. Future studies are needed to evaluate its precise function in breast cancer. https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/view/733 https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/download/733/557