Numerous studies have shown that the administration of IL-7 exogenously can enhance thymopoiesis and T-cell reconstitution following T-cell depletion due to multiple factors, such as lymphoablative therapy, infections, chemotherapy, and radiotherapy, highlighting its use as a potential treatment for numerous clinical situations associated with T-cell immunodeficiency [5,48]. Here, IL7 is linked to T-cell immunodeficiency.