Omalizumab may facilitate drug desensitization in patients failing standard protocolsTo the Editor, Nephrotic syndrome (NS) is a common glomerular disorder in children, for which steroids are the first-line treatment. While most children with NS respond to steroid therapy, 20% of children are resistant to steroids. Some children with steroid-responsive NS develop a frequently relapsing or steroid-dependent course and experience significant side effects of steroid therapy. Alternative medications such as calcineurin inhibitors, mycophenolate mofetil, cyclophosphamide, and rituximab, an anti-CD20 monoclonal anti-
The FOXN1 gene mutation is a unique disorder that causes the nude severe combined immunodeficiency phenotype. In patients with severe combined immunodeficiency, hematopoietic stem cell transplantation (HSCT) is life-saving if performed earlier. Thymic transplantation is the curative treatment for FOXN1 deficiency because the main pathology is thymic stromal changes. In this report, we describe the clinical features of a Turkish patient with a homozygous FOXN1 mutation treated with HSCT from his human leukocyte antigen-matched sibling. On follow-up, he showed Bacille Calmette Guerin adenitis and was evaluated as having immune reconstitution inflammatory syndrome. By presenting our patient, we aimed to draw attention to the development of HSCT and subsequent immune reconstitution inflammatory syndrome as a treatment option in patients with FOXN1 deficiency.
Nephrotic syndrome (NS) is a common glomerular disorder in children, for which steroids are the firstline treatment. While most children with NS respond to steroid therapy, 20% of children are resistant to steroids. Some children with steroid-responsive NS develop a frequently relapsing or steroid-dependent course and experience significant side effects of steroid therapy. Alternative medications such as calcineurin inhibitors, mycophenolate mofetil, cyclophosphamide, and rituximab, an anti-CD20 monoclonal antibody, are being considered for such patients with difficult-to-treat NS (1,2).
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