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CC BY-NC-ND 4.0 · Journal of Coloproctology 2022; 42(02): 120-125
DOI: 10.1055/s-0041-1741323
Original Article

Expression Levels of the CA9, WT1, and PRAME Genes and Genotyping-Associated Antigens for the Diagnosis and Prognosis of Colorectal Cancer

Tabark S Jassim 
1   Prosthodontic Technology Department, Dijlah University College, Baghdad, Iraq
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Financial support The authors have no sources of funding to declare.
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Abstract

Background Colorectal cancer (CRC) is the third most prevalent type of cancer worldwide, and is one of the major health problems in Asia, Africa, Europe, and America. The tumor antigens recently are of interesting indicators as diagnostic and prognostic tools. The aim of the present study is to detect the expression levels of carbonic anhydrase IX (CA9), the Wilms tumor gene (WT1), and the preferentially expressed antigen in melanoma (PRAME) in the peripheral blood of CRC patients in comparison with healthy controls.

Methods A prospective case-control study of CRC patients was conducted. We included 25 newly-diagnosed CRC eligible patients and obtained peripheral blood samples of them as well as 10 blood samples from the control group. All samples were then submitted to deoxyribonucleic acid (DNA) extraction and a molecular study through real-time polymerase chain reaction (PCR).

Results The CRC group consisted of 15 (60%) female and 10 (40%) male patients with a mean age of 50.52 ± 9.8 years, while the control group included 4 (40%) female and 6 (60%) male patients with a mean age of 47.7 ± 7.9 years. The CRC group, 24 (96%) of patient samples were CA9-positive with strong statistically significant differences (p < 0.00001; sensitivity: 96%; specificity: 90%). Regarding the WT1 gene, there were 11 (44%) positive samples in the CRC group, with no statistically significant differences (p = 0.055; sensitivity: 44%; specificity: 90%). The PRAME gene was positive in 9 (36%) samples in the CRC group, with no statistically significant differences (p = 0.357; sensitivity: 36%; specificity: 80%. Among CA9 (24 patients; 96%) of patients with CRC expressed positive results, in WT1 11(91.6%) CRC patients expressed gene, and in PRAME gene, 9 patients with CRC (81.8%) expressed positive results.

Conclusion Overexpression of the CA9 gene in CRC of high sensitivity and specificity to be used as a tool to discriminate CRC from benign associate with high accuracy compare to WT1 and PRAME genes.

Keywords

colorectal cancer - tumor-associated antigens - real-time polymerase chain reaction - CA9 - WT1 - PRAME


Publikationsverlauf

Eingereicht: 07. August 2021

Angenommen: 25. Oktober 2021

Artikel online veröffentlicht:
10. Dezember 2021

© 2021. Sociedade Brasileira de Coloproctologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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