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Recurrent malignant melanoma of the uterine cervix treated with anti-PD-1 antibodies and anti-CTLA-4 antibodies: A case report

In 5% of female patients with malignant melanoma (MM), MM develops from the genital tract. MM of the cervix is particularly rare. In the present case report, a 73-year-old woman with stage ⅢC cervical MM underwent modified radical hysterectomy, bilateral salpingo-oophorectomy and pelvic lymph node dissection. A total of 4 months after surgery, multiple metastases were found in the brain, lung, liver, lymph nodes and bone. The patient underwent γ-knife surgery of the brain and received treatment with anti PD-1 antibodies (nivolumab) and anti-CTLA4 antibodies (ipilimumab); however, they were ineffective and the patient subsequently died. To the best of our knowledge, this is the first report of treatment using two types of immune checkpoint inhibitors administered to a patient with cervical MM. Taken together with previous reports, this case suggests that immune checkpoint inhibitors may be less effective in cervical MM than in cutaneous MM; however, the number of cases is small. Further development of biomarkers to stratify efficacy is required.