GH1 and early-onset autosomal dominant Alzheimer disease: Iatrogenic infectivity of an Alzheimer's disease variant characterized by perivascular deposits of Abeta amyloid has been recognized in patients who had received cadaver‐derived human growth hormone (Banerjee et al. 2024), and statistical evidence for transmission of Alzheimer's disease via transfusion has been reported (Zhao et al. 2023).