The original purpose of the study was to assess the long-term safety, tolerability, and practicability of the subcutaneous (SC) treatment with Immune Globulin Subcutaneous Solution (IGSC), 10% facilitated with recombinant human hyaluronidase (rHuPH20) in participants with Primary Immunodeficiency Diseases (PID) who had completed Baxalta (formerly Baxter) Clinical Study Protocol No. 160603.