Tian et al. [28] have developed for the first time an inexpensive, environmental-friendly, and highly sensitive plasmonic nanotransduction platform using a common laboratory filter paper (i.e., Whatman 1) for the rapid and label-free LSPR detection of aquaporin-1 (AQP1) protein in artificial urine sample, an important cancer biomarker for early detection of renal cancer carcinoma (RCC). Here, AQP1 is linked to cancer.