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Title: Successful immune reconstitution by means of hematopoietic stem cell transplantation in a Colombian patient with chronic granulomatous disease. Author: Rocha YC, López JÁ, Orrego JC, Coll Y, Karduss A, Rosenzweig S, Franco JL. Journal: Biomedica; 2016 Jun 03; 36(2):204-12. PubMed ID: 27622481. Abstract: INTRODUCTION: Chronic granulomatous disease is a primary immunodeficiency that results from mutations in proteins of the NADPH oxidase system that affect the microbicidal activity of phagocytes. Immune reconstitution by hematopoietic stem cell transplantation is currently the only curative therapy for this disease. OBJECTIVE: To describe the clinical and molecular characterization of a patient with X-linked chronic granulomatous disease and the successful immune reconstitution by means of a hematopoietic stem cell transplantation. METHODS: The respiratory burst was measured by flow cytometry using the dihydrorodamine 123 (DHR) oxidation test in neutrophils of peripheral blood. Mutational analysis of CYBB was performed by PCR amplification in complementary DNA, as well as sequencing and comparative genomic hybridization in genomic DNA. HLA-identical stem cells from the patient's younger brother were used for the transplantation and reduced intensity pre-transplantation conditioning was administered. Post-transplantation immune reconstitution was evaluated periodically by serial complete blood counts and DHR 123 in peripheral blood neutrophils. RESULTS: The diagnosis of X-linked chronic granulomatous disease resulted from a hemizygous deletion affecting Xp21.1 that included the entire CYBB. Post-transplantation engraftment was documented in platelets and peripheral blood neutrophils at days 10 and 11, respectively. Total hematological reconstitution was achieved by day 30 post-transplantation and no complications or infections have been observed in the three years since the transplantation. CONCLUSION: Hemopoietic stem cell transplantation allows for total reconstitution of the immune function related to microbicidal activity of phagocytic cells from patients with X-linked chronic granulomatous disease.[Abstract] [Full Text] [Related] [New Search]