ABSTRACT Poorly differentiated thyroid carcinoma (PDTC) is a rare and aggressive malignancy with a poor prognosis. Immunotherapy is typically guided by agnostic biomarkers such as microsatellite instability-high or high tumor mutational burden (TMB); however, these biomarkers are uncommon in PDTC. Therefore, identifying alternative predictive biomarkers remains an urgent necessity. We report the case of a 71-year-old woman who presented with life-threatening locoregional disease and was ineligible for radioiodine or tyrosine kinase inhibitors due to a prior subarachnoid hemorrhage. Molecular profiling […]
