KITLG and Alzheimer disease: The comparison of the levels of the soluble stem cell factor of MCs, SCF, and its KIT receptor in the serum of 54 patients with AD, 5 patients with ordinary psoriasis, and 64 healthy people showed that levels of SCF and the KIT receptor are correlated with the exacerbation of the disease in AD patients but not in patients with psoriasis [79].