Since both αTP and γTP are formed in the in vitro assay, it was interesting to determine whether the two compounds affect cells with different potency, what could contribute to the activity differences seen with αT and γT in THP-1 monocytic leukaemia cells [4], [36] and other experimental systems despite a generally lower γT level (reviewed in [37]). The gene discussed is ATP8A2; the disease is monocytic leukemia.