1) The blister protocol is being used to evaluate inflammation in vivo in several populations of patients with rare immunodeficiencies including STAT3 deficiency, CGD, and others. Results from some of our studies of STAT3 deficiency have been submitted for publication. Using normal subjects, we are collaborating with Doug Kuhns (SAIC), to examine the ability of human inflammatory leukocytes to act as myeloid suppressor cells of T-cell function. 2) During FY12, we have continued to enroll patients in NIH Protocol #10-I-0123 Assessment of the Biochemical Response to IFN-gamma in Subjects with Specific Gene Mutations in Chronic Granulomatous Disease. This study will test whether subpopulations of CGD patients, differing in underlying mutation and/or residual NADPH oxidase activity, are more likely to benefit from IFN-gamma treatment. Interferon-gamma has been used clinically in CGD patients to reduce the rates of infection. However, neither the mechanism of this costly drugs actions nor the wide variation in clinical response among CGD patients is known. Our hypothesis is that only certain subgroups of CGD patients, specifically those with higher detectable levels of ROS may be responsive to and benefit from Interferon treatment. Completion of this study may result in significant cost savings and a reduction in morbidity associated with interferon treatment.

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Matharu, Kabir; Zarember, Kol A; Marciano, Beatriz E et al. (2013) B-cell activating factor (BAFF) is elevated in chronic granulomatous disease. Clin Immunol 148:258-64
Hsu, Amy P; Sowerwine, Kathryn J; Lawrence, Monica G et al. (2013) Intermediate phenotypes in patients with autosomal dominant hyper-IgE syndrome caused by somatic mosaicism. J Allergy Clin Immunol 131:1586-93
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