Fecha de publicación: -- Fuente: WIPO "tomato" Provided herein are methods of treatment and uses involving an immunomodulatory TACI-Fc fusion protein that exhibits neutralizing activity of BAFF and APRIL (or BAFF/APRIL heterotrimers). The provided TACI-Fc protein may include variant domains of Transmembrane Activator and CAML Interactor (TACI). The methods and uses provide therapeutic utility for a variety of immunological diseases, disorders or conditions, such as B cell-mediated diseases, disorder or conditions.