%0 Journal Article %T Detrimental Association of Hypogammaglobulinemia With Chronic Lung Allograft Dysfunction and Death Is Not Mitigated by On %A Adriana Zeevi %A Alicia B. Lichvar %A Andrej A. Petrov %A Christopher R. Ensor %A J. W. Awori Hayanga %A John F. McDyer %A Jonathan DĄ¯Cunha %A Joseph M. Pilewski %A Matthew R. Morrell %J Progress in Transplantation %@ 2164-6708 %D 2019 %R 10.1177/1526924818817028 %X Hypogammaglobulinemia (HGG), immunoglobulin G (IgG) <700 mg/dL, is associated with infections, chronic lung allograft dysfunction, and death following lung transplantation. This study evaluates the use of on-demand intravenous IgG in lung transplant recipients with HGG. This single-center retrospective cohort study of adult lung recipients evaluated 3 groups, no, untreated (u), or treated (t) HGG at first IgG administration or a matched time posttransplant. Primary outcome was freedom from allograft dysfunction. Secondary outcomes included development of advanced dysfunction, rejection, infection burden, and mortality. Recipients included 484 (no HGG: 76, uHGG: 192, tHGG: 216). Freedom from chronic allograph dysfunction was highest in the non-HGG group 2 years post-enrollment (no HGG 77.9% vs uHGG 56.4% vs tHGG 52.5%; P = .002). Freedom from advanced dysfunction was significantly different 2 years post-enrollment (no HGG 90.5% vs uHGG 84.7% vs tHGG 75.4%; P = .017). Patients without HGG and those with uHGG had less mortality at 2 years post-enrollment (no HGG 84.2% vs uHGG 81.3% vs tHGG 64.8%; P < .001). Gram-negative pneumonias occurred more often in the tHGG group (P = .02). Development of chronic lung allograft dysfunction, patient survival, rejection burden, and key infectious outcomes in lung transplant recipients were still problematic in the context of on-demand IgG therapy. Prospective studies are warranted %K other transplant recipient %K body regions %K therapeutics %K immune system %K diseases %K pathological conditions %K signs and symptoms %K bacterial infections and mycoses %K population characteristics %U https://journals.sagepub.com/doi/full/10.1177/1526924818817028