FOLH1 and nonpapillary renal cell carcinoma: For example, we have previously shown that we can target clear cell renal cell carcinoma (ccRCC) to good effect with a positron-emitting version of our PSMA-targeting ureas, DCFPyL (piflufolostat F 18) [32,33,34], and could potentially use an optimized NIR version for surgical guidance in partial nephrectomy, for which non-targeted carbocyanine dyes have been leveraged [11].