HSD17B10 and Alzheimer disease: Mutual interactions of 17β-HSD10 and Aβ can be documented by many experiments in vitro [e.g., 2, 7, 9, 13–19], by their co-localization in brain mitochondria of AD patients or of transgenic (Tg) animal models of AD [9] and also by detection 17β-HSD10–Aβ complexes occurring in CSF [10, 11].