TACR1 and glioma: The overexpression of peptide receptors can be used as a potential glioma biomarker (NK-1R, angiotensin receptor, ETA receptor, ETB receptor, NPY receptor, VIP receptor, PACAP receptor, and somatostatin receptor), and as previously mentioned, this overexpression is also useful for potential and promising anti-glioma therapeutic strategies [19,57,86,89,126,127].