Exceptional Response in a Patient with mRCC Through Precision-Guided Treatment Involving Immunotherapy Rechallenge with Temsirolimus and Bevacizumab.

Comprehensive genomic profiling (CGP) and the subsequent discussions in molecular tumor boards (MTBs) are becoming an integral part of personalized cancer care. The patient with metastatic renal cell carcinoma (mRCC) presented here demonstrated an absence of a favorable response accompanied by adverse events after receiving dual immunotherapy with nivolumab plus ipilimumab in combination with a poly (adenosine diphosphate-ribose) polymerase inhibitor, niraparib. This determination was made based on the initial CGP report and the initial MTB. Following the progression of the disease and the emergence of immune-related adverse events, a second CGP was conducted, and several subsequent MTBs were held. The decision was made to transition the patient's treatment to temsirolimus plus bevacizumab, with the rechallenge of immunotherapy with pembrolizumab. The response evaluation revealed a complete radiographic and molecular response. This case study underscores the mounting significance of precision oncology in the management of mRCC, thereby suggesting that mammalian target of rapamycin inhibitor may augment the efficacy of immunotherapy in select patients based on their genomic findings. A digital poster of this case is included in the supplemental materials.