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Endometrial cancer (EC) is one of the most common gynecological tumors. The first-line treatment for advanced EC is chemoradiotherapy. However, patients in poor health, such as those with intestinal obstruction, have limited tolerance for the side effects of chemoradiotherapy. Individualized precision treatment may bring new hope to these patients. Herein, we have reported on a 56-year-old female patient with metastatic EC combined with severe intestinal obstruction. Due to her inability to tolerate needle biopsy and standard treatment protocols, next-generation sequencing (NGS)-based circulating tumor DNA (ctDNA) testing was performed and PTEN deletion was found. Following, the patient commenced everolimus (10 mg, qd) treatment and partial shrinkage of metastases was observed one month later. Then, everolimus (10 mg, qd) plus carboplatin (100 mg d1, 8, 15, q28d) for 2 cycles, everolimus (10 mg, qd) plus carboplatin (200 mg d1, 8, q21d) for 2 cycles, and everolimus (10 mg, qd) plus carboplatin (200 mg d1, 2, q21d) for 2 cycles were performed, and the patient got partial response for 10 months. From June 2019, the patient continued to benefit from everolimus and subsequently experienced continued benefit for more than 12 months. This is the first reported case of an EC patient who benefited from everolimus as a first-line treatment based on PTEN deletion. This case provides important clinical experience for the precision treatment of patients with advanced EC.

Antitumor activity of everolimus in recurrent metastatic endometrial cancer with PTEN deletion: a case report