Next, we determined the effect of 12 weeks of diet supplementation with H. elongata lipid extract and S. fusiforme SCF extract on (phyto)sterols, in the cerebellum, liver, and serum of APPswePS1ΔE9 mice to confirm the presence of saringosterol in the brain and to assess the effects of the treatments on sterol homeostasis, which is known to be affected in AD. The gene discussed is KITLG; the disease is Alzheimer disease.