PMID- 28771563 OWN - NLM STAT- MEDLINE DCOM- 20171006 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 12 IP - 8 DP - 2017 TI - The effect of immunohistochemically detected p53 accumulation in prognosis of breast cancer; A retrospective survey of outcome. PG - e0182444 LID - 10.1371/journal.pone.0182444 [doi] LID - e0182444 AB - BACKGROUND: P53; a tumor suppressor gene has known to have a role in a group of human cancers. Its role in breast cancer; one of the most prevalent malignancies worldwide, is still controversial. The current study is designed to evaluate the prognostic role of p53 mutation in breast cancer. METHODS: one hundred and eighty five breast cancer patients were studied in this retrospective study. P53 mutation was detected by accumulation of p53 protein in the patients' pathology samples. Immunohistochemistry (IHC) was used to detect the protein. The effect of p53 on the final outcome was assessed using Kaplan-Meier estimate of survival and compared by log-rank test. Prognostic effects analyzed by cox proportional hazard models. RESULTS: while the stage of the disease at presentation was not significantly different between p53 positive and negative patients, those with p53 mutation had a significantly poorer outcome in terms of overall and disease-free survival rates (OS and DFS). In a multivariate analysis hazard ratio of p53 mutation was about 5 and 3.8 for OS and DFS respectively. They also had a higher cumulative incidence of relapse. CONCLUSION: It seems that p53 mutation is an independent prognostic factor for breast cancer. Although larger prospective studies are needed to clarify the importance of such a conclusion. FAU - Sadighi, Sanambar AU - Sadighi S AD - Department of Medical Oncology, Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran. FAU - Zokaasadi, Mohammad AU - Zokaasadi M AD - Hematology, Oncology and Stem Cell Transplantation Research Center; Tehran University of Medical Sciences, Tehran, Iran. FAU - Kasaeian, Amir AU - Kasaeian A AD - Hematology, Oncology and Stem Cell Transplantation Research Center; Tehran University of Medical Sciences, Tehran, Iran. FAU - Maghsudi, Somaye AU - Maghsudi S AD - Hematology, Oncology and Stem Cell Transplantation Research Center; Tehran University of Medical Sciences, Tehran, Iran. FAU - Jahanzad, Issa AU - Jahanzad I AD - Department of Pathology, Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran. FAU - Kamranzadeh Fumani, Hosein AU - Kamranzadeh Fumani H AUID- ORCID: 0000-0002-6227-8994 AD - Hematology, Oncology and Stem Cell Transplantation Research Center; Tehran University of Medical Sciences, Tehran, Iran. LA - eng PT - Journal Article DEP - 20170803 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Biomarkers, Tumor) RN - 0 (TP53 protein, human) RN - 0 (Tumor Suppressor Protein p53) SB - IM MH - Biomarkers, Tumor/*metabolism MH - Breast Neoplasms/genetics/metabolism/*pathology MH - Female MH - Humans MH - Immunoenzyme Techniques MH - Middle Aged MH - Mutation/*genetics MH - Neoplasm Grading MH - Neoplasm Recurrence, Local/genetics/metabolism/*pathology MH - Neoplasm Staging MH - Prognosis MH - Retrospective Studies MH - Surveys and Questionnaires MH - Survival Rate MH - Tumor Suppressor Protein p53/genetics/*metabolism PMC - PMC5542560 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2017/08/05 06:00 MHDA- 2017/10/07 06:00 PMCR- 2017/08/03 CRDT- 2017/08/04 06:00 PHST- 2017/05/07 00:00 [received] PHST- 2017/07/18 00:00 [accepted] PHST- 2017/08/04 06:00 [entrez] PHST- 2017/08/05 06:00 [pubmed] PHST- 2017/10/07 06:00 [medline] PHST- 2017/08/03 00:00 [pmc-release] AID - PONE-D-17-17547 [pii] AID - 10.1371/journal.pone.0182444 [doi] PST - epublish SO - PLoS One. 2017 Aug 3;12(8):e0182444. doi: 10.1371/journal.pone.0182444. eCollection 2017.