Various isoforms of GFAP expressed in the AD mouse models include GFAP-α [Alpha isoform], GFAP-β [Beta isoform], GFAP-γ [Gamma isoform], GFAP-δ [Epsilon isoform], GFAP-κ [Kappa isoform], and GFAP-ζ [Delta isoform] [39]. Here, GFAP is linked to Alzheimer disease.