Biogenic amines are one of two broad classes of classical neurotransmitters (the other being amino acids) and include: acetylcholine, serotonin, histamine, and the catecholamines epinephrine, norepinephrine, and dopamine.
Source: http://www.whatislife.com/reader2/Metabolism/pathway/Neurotransmitter.html
Proteins on this pathway have targeted assays available via the [https://assays.cancer.gov/available_assays?wp_id=WP550 CPTAC Assay Portal]