Recurrent cervical cancer with PD-L1 amplification treated with nivolumab: A case enrolled in the BELIEVE trial.

Patients with cervical cancer benefiting from immune checkpoint inhibitors (ICIs) are limited. Recently, PD-L1 amplification has been attracted attention as a reliable marker of ICIs. A 47-year-old woman with stage IIB cervical cancer experienced disease progression during postoperative adjuvant chemotherapy. Cancer genomic profiling revealed that the tumor was microsatellite stable with PD-L1 amplification, therefore, nivolumab was administered by enrolling in the BELIEVE trial. Despite nivolumab treatment, remarkable disease progression was observed. At the beginning of nivolumab treatment, the patient already had multiple liver metastases with severe systemic inflammation as indicated by a high neutrophil-to-lymphocyte ratio (NLR), both of which are negative predictive markers for ICI. Despite the presence of PD-L1 amplification, nivolumab was ineffective in cancer progression, which may be attributable to the presence of liver metastasis and high NLR. ICI is recommended to be administered at an early stage of cancer treatment to enhance its effectiveness.