GAD2 and Alzheimer disease: In addition, neural genes such as NeuN (HRNBP3 or FOX1), GFAP and GAD1, GAD2 (GABA-ergic genes) on the one hand and specific AD-related neuronal genes such as CALBINDIN1 and 2 (also known as calretinin) as well as SST (somatostatin or SRIF) on the other were analyzed.