MAPT and Alzheimer disease: developed a graphene‐Au nanopyramid (GAuNP) hybrid SERS platform for ultrasensitive, label‐free detection of AD biomarkers including Tau, P‐Tau proteins, and Aβ42 peptides, achieving remarkable LODs of 10−15m for Tau/P‐Tau proteins and 10−14m for Aβ42 peptides.[312] Similarly, Eremina et al.