Furthermore, the fabricated brown, navy, and red PINs were employed to simultaneously detect key biomarkers of gastric, pancreatic, and prostate cancers, specifically, intercellular adhesion molecule 1 (ICAM1), carbohydrate antigen 19-9 (CA19-9), and prostate-specific antigen (PSA), respectively. The gene discussed is KLK3; the disease is prostate carcinoma.