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Bu, Rong; Siraj, Abdul K.; Parvathareddy, Sandeep Kumar; Iqbal, Kaleem; Azam, Saud; Qadri, Zeeshan; Al-Rasheed, Maha; Haqawi, Wael; Diaz, Mark; Alobaisi, Khadija; Annaiyappanaidu, Padmanaban; Siraj, Nabil; AlHusaini, Hamed; Alomar, Osama; Al-Badawi, Ismail A.; Al-Dayel, Fouad; Al-Kuraya, Khawla S.

Lynch Syndrome Identification in Saudi Cohort of Endometrial Cancer Patients Screened by Universal Approach

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  • Media type: E-Article
  • Title: Lynch Syndrome Identification in Saudi Cohort of Endometrial Cancer Patients Screened by Universal Approach
  • Contributor: Bu, Rong; Siraj, Abdul K.; Parvathareddy, Sandeep Kumar; Iqbal, Kaleem; Azam, Saud; Qadri, Zeeshan; Al-Rasheed, Maha; Haqawi, Wael; Diaz, Mark; Alobaisi, Khadija; Annaiyappanaidu, Padmanaban; Siraj, Nabil; AlHusaini, Hamed; Alomar, Osama; Al-Badawi, Ismail A.; Al-Dayel, Fouad; Al-Kuraya, Khawla S.
  • imprint: MDPI AG, 2022
  • Published in: International Journal of Molecular Sciences
  • Language: English
  • DOI: 10.3390/ijms232012299
  • ISSN: 1422-0067
  • Keywords: Inorganic Chemistry ; Organic Chemistry ; Physical and Theoretical Chemistry ; Computer Science Applications ; Spectroscopy ; Molecular Biology ; General Medicine ; Catalysis
  • Origination:
  • Footnote:
  • Description: <jats:p>Lynch syndrome (LS) is the most common cause of inherited endometrial cancer (EC). The prevalence and molecular characteristic of LS in Middle Eastern women with EC have been underexplored. To evaluate the frequency of LS in a cohort of EC patients from Saudi Arabia, a total of 436 EC cases were screened utilizing immunohistochemistry (IHC), MLH1 promoter methylation analysis and next-generation sequencing technology. A total of 53 of 436 (12.2%) ECs were classified as DNA mismatch repair-deficient (dMMR). MLH1 promoter hypermethylation was detected in 30 ECs (6.9%). Three ECs (0.7%) were found to be LS harboring germline pathogenic variants (PVs)/likely pathogenic variants (LPVs): two in the MSH2 gene and one in the MSH6 gene. Three ECs (0.7%) were Lynch-like syndrome (LLS) carrying double somatic MSH2 PVs/LPVs. Seven cases were found to have variants of uncertain significance in cancer-related genes other than MMR genes. Our results indicate that LS prevalence is low among Saudi EC patients and LLS is as common as LS in this ethnicity. Our findings could help in better understanding of the prevalence and mutational spectrum of this syndrome in Saudi Arabia, which may help in defining best strategies for LS identification, prevention and genetic counseling for EC patients.</jats:p>
  • Access State: Open Access