In this condition, the expression level of activating enzymes of FTD (TK1 and DTYMK) (Supplementary Fig. 7A) and the cell cycle profile (Supplementary Fig. 7B) were not significantly altered by siRNA-mediated downregulation of SLC29A1 and/or SLC29A2 mRNA. The gene discussed is SLC29A2; the disease is frontotemporal dementia.