ITGAD and Alzheimer disease: ITGAD shares close structural similarity with β2 integrin family members ITGAM and ITGAX, highly expressed in microglia (Juul‐Madsen et al. 2020) and associated with increased inflammation in AD (Juul‐Madsen et al. 2024; Wilton et al. 2023; Yoo et al. 2024).