PMS2 germline mutation c.1577delA (p.Asp526Alafs∗69)-induced Lynch syndrome-associated endometrial cancer: A case report

Rationale: 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 endometrial cancer (LSAEC) was rarely reported. Patient concerns: A 26-year-old female patient suffered from prolonged menstrual period and increased menstrual flow for 2 months. Diagnoses: The patient was diagnosed with cervix CIN III, endometrial cancer (EC), anemia, and LS. Interventions: Total hysterectomy, bilateral salpingectomy, pelvic lymphadenectomy were performed for treating EC, while ovariectomy was refused by the patient. The patient underwent postoperative chemotherapy with paclitaxel combined with carboplatin for 6 courses of treatment. Laparoscopic partial enterectomy was applied for treating colon cancer 5 years later after the surgery treatment for EC. Besides, Sanger sequencing and high-throughput genome sequencing were employed to detect the genetic status of the family that included two generations with four members. Immunohistochemistry (IHC) staining was used to identify the function of PMS2 mutation. Outcomes: The 26-year-old Chinese patient suffered from LSAEC and recovered well after surgery. A PMS2 germline heterozygous mutation (c.1577delA) was confirmed by gene sequencing 5 years later. In addition, PMS2 mutation was verified by IHC. The patient was followed up for 7 years. Lessons: Carrying PMS2 germli...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research

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