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Updated: Jan 25, 2026

An Orthotopic Model of Serous Ovarian Cancer in Immunocompetent Mice for in vivo Tumor Imaging and Monitoring of Tumor Immune Responses
Published on: November 28, 2010
PMS2 germline mutation c.943C>T (p.Arg315*)-induced Lynch syndrome-associated ovarian cancer
Xiaoqing Guo1, Weimin Wu1, Hao Gao1
1Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
Background:
Lynch syndrome (LS) is an autosomal dominant cancer predisposition condition caused by germline heterozygous mutations in mismatch repair (MMR) genes. However, as one of the MMR genes, PMS2 mutation-induced LS-associated ovarian cancer (LSAOC) has rarely been reported.
Methods:
Next-generation sequencing (NGS) or Sanger sequencing was used to detect the genetic status of one family including four generations with 16 members. Then, quantitative real-time PCR (qPCR), western blotting, immunohistochemistry (IHC) staining, and Swiss-Model software were used to identify the function of the PMS2 mutation.
Results:
Five individuals [I-1, II-1, II-2, II-4, and III-2 (proband)] suffered from LS-associated cancers, for example, colon cancer, gastric cancer, and ovarian cancer, with the age of onset ranging from 39 to 70 years old. A PMS2 germline heterozygous mutation (c.943C>T) was confirmed in three members [II-9, III-2, and IV-1] by gene sequencing. In addition, this PMS2 mutation was verified by qPCR, western blotting, and IHC, and a dramatic change with partial loss of the C-terminal domain in an α-helix might be exhibited.
Conclusion:
Carrying PMS2 germline mutations (c.943C>T) confers an extremely high susceptibility of suffering from LS-associated cancers. Thus, close clinical monitoring and prophylactic surgery is highly recommended to help reduce the morbidity and mortality of LS-associated cancers.
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