have evaluated different amine-reactive NIR fluorophores, such as Alexa Fluor 647®, Alexa Fluor 680®, and Alexa Fluor 750®, in preclinical studies of the biodistribution and tumor binding of an interleukin-13 receptor subunit alpha-2 antibody (IL13Rα2-Ab) in mice and cell lines (Gupta et al., 2017); Duygu and Cols. The gene discussed is PSMA2; the disease is neoplasm.