Lynch-like Syndrome and its Molecular Approaches: A Brief Report and Literature Review | ||
| Middle East Journal of Cancer | ||
| مقاله 12، دوره 14، شماره 2 - شماره پیاپی 54، 2023، صفحه 300-308 اصل مقاله (3.42 M) | ||
| نوع مقاله: Brief Report(s) | ||
| شناسه دیجیتال (DOI): 10.30476/mejc.2022.92251.1650 | ||
| نویسندگان | ||
| Zeinab Abdollahi1؛ Mohammad Amin Tabatabaiefar1، 2؛ Mohammad Hassan Emami3؛ Mehrdad Zeinalian* 1، 2، 4 | ||
| 1Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran | ||
| 2Pediatric Inherited Disease Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran | ||
| 3Poursina Hakim Digestive Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran | ||
| 4Iranians Cancer Control Charity Institute (MACSA), Isfahan, Iran | ||
| چکیده | ||
| Lynch syndrome (LS) predisposes individuals to early-onset colorectal and other Lynch-associated cancer. This disorder is an autosomal dominant genetic disturbance caused by germline mutations in one of the mismatch repair genes. Different clinical and molecular criteria are used to diagnose LS. Microsatellite instability testing and immunohistochemistry are two widely used methods for the molecular screening of LS-associated cancers. According to the immunohistochemistry and Microsatellite instability testing, we introduce three Persian families with Lynch-like syndrome (LLS) who met clinical Amsterdam-II criteria and their probands were mismatch repair deficient. In the case of immunohistochemistry-MLH1 absent, BRAF-V600E mutation was evaluated to rule out the sporadic colorectal cancer cases. No pathogenic germline variants were found by next generation sequencing method. Multiplex ligation-dependant probe amplification technique was done to find large in/dels within MLH1/MSH2 genes of the probands. A two-exon deletion within MLH1 gene was eventually identified in one of the patients. Finally, we have represented a molecular pipeline to diagnose LLS based on literature review and the introduced cases. | ||
| کلیدواژهها | ||
| Lynch syndrome؛ Colorectal cancer؛ Neoplastic syndromes؛ Hereditary؛ Mismatch repair gene | ||
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