mTOR can be inhibited by rapamycin treatment, which has been shown to reverse age‐related immunosenescence in aged mice, in part by restoring both the self‐renewal and haematopoietic capacity of aged haematopoetic stem cells.119 In two studies, low‐dose mTOR inhibitors were administered to elderly individuals for 6 weeks and prior to influenza vaccination. The gene discussed is MTOR; the disease is influenza.