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Bardakhchyan S, Mkhitaryan S, Zohrabyan D, Safaryan L, Avagyan A, Harutyunyan L, Arakelyan J, Tamamyan G, Tananyan A. Treatment and Outcomes of Colorectal Cancer in Armenia: A Real-World Experience From a Developing Country. JCO Glob Oncol 2021; 6:1286-1297. [PMID: 32783650 PMCID: PMC7456313 DOI: 10.1200/go.20.00251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
PURPOSE In Armenia, colorectal cancer (CRC) is one of the most frequently diagnosed cancers. It is in the third place by incidence. The aim of this study was to evaluate treatment and outcomes of CRC in Armenia during the last 9 years. MATERIALS AND METHODS For this retrospective hospital-based study, we have collected data from two main oncology centers in Armenia: National Oncology Center and “Muratsan” Hospital of Yerevan State Medical University. The information about patients with CRC who were treated at these two centers between January 1, 2010 and July 1, 2018 was collected from the medical records. Log-rank test and Kaplan-Meier curves were used for survival analysis. Prognostic factors were identified by Cox regression. RESULTS A total of 602 patients with CRC were involved in the final analysis. Median follow-up time was 37 months (range, 3-207 months). A total of 8.6% of patients had stage I, 32.9% stage II, 38.0% stage III, and 17.6% stage IV cancer; for 2.7% patients, the stage was unknown. The main independent prognostic factors for overall survival (OS) were tumor stage, grade, and histology. Adjuvant chemotherapy has been shown to improve survival in stage II colon cancer and stage III rectal but not in stage II rectal cancer. Radiotherapy did not yield survival improvement in stage II or III rectal cancer. Three- and 5-year OS rates were 62.9% and 51.8% for all stages combined and 79.7% and 68.5% for stages I-II, 62.5% and 48.4% for stage III, and 24.4% and 17% for stage IV respectively. CONCLUSION As seen from our results, our survival rates are lower than those of the developed world. Additional research is needed to identify the underlying reasons and to improve patients’ treatment and outcomes in Armenia.
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Affiliation(s)
- Samvel Bardakhchyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Adult Solid Tumors Chemotherapy Department, Haematology Center Yerevan State Medical University, Yerevan, Armenia
| | | | - Davit Zohrabyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Adult Solid Tumors Chemotherapy Department, Haematology Center Yerevan State Medical University, Yerevan, Armenia.,Department of Chemotherapy, Mikaelyan Institute of Surgery, Yerevan, Armenia
| | - Liana Safaryan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Adult Solid Tumors Chemotherapy Department, Haematology Center Yerevan State Medical University, Yerevan, Armenia
| | - Armen Avagyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Department of Chemotherapy, Mikaelyan Institute of Surgery, Yerevan, Armenia
| | - Lilit Harutyunyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Department of Chemotherapy, Mikaelyan Institute of Surgery, Yerevan, Armenia
| | - Jemma Arakelyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Adult Solid Tumors Chemotherapy Department, Haematology Center Yerevan State Medical University, Yerevan, Armenia
| | - Gevorg Tamamyan
- Pediatric Cancer and Blood Disorders Center of Armenia, Hematology Center, Yerevan State Medical University, Yerevan, Armenia.,Department of Pediatric Oncology and Hematology, Yerevan State Medical University, Yerevan, Armenia
| | - Armen Tananyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia
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Mariadason JM, Arango D, Augenlicht LH. Customizing chemotherapy for colon cancer: the potential of gene expression profiling. Drug Resist Updat 2004; 7:209-18. [PMID: 15296862 DOI: 10.1016/j.drup.2004.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2004] [Accepted: 05/19/2004] [Indexed: 01/14/2023]
Abstract
The value of gene expression profiling, or microarray analysis, for the classification and prognosis of multiple forms of cancer is now clearly established. For colon cancer, expression profiling can readily discriminate between normal and tumor tissue, and to some extent between tumors of different histopathological stage and prognosis. While a definitive in vivo study demonstrating the potential of this methodology for predicting response to chemotherapy is presently lacking, the ability of microarrays to distinguish other subtleties of colon cancer phenotype, as well as recent in vitro proof-of-principle experiments utilizing colon cancer cell lines, illustrate the potential of this methodology for predicting the probability of response to specific chemotherapeutic agents. This review discusses some of the recent advances in the use of microarray analysis for understanding and distinguishing colon cancer subtypes, and attempts to identify challenges that need to be overcome in order to achieve the goal of using gene expression profiling for customizing chemotherapy in colon cancer.
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Affiliation(s)
- John M Mariadason
- Department of Oncology, Montefiore Medical Center, Albert Einstein Cancer Center, 111, East 210th Street, Bronx, NY 10467, USA.
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