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Mendonca LO, Prado AI, Costa IMC, Bandeira M, Dyer R, Barros SF, Khöler KF, Fonseca LAM, Kalil J, Castro FM, Toledo-Barros MAM. Case Report: Expanding Clinical, Immunological and Genetic Findings in Sideroblastic Anemia With Immunodeficiency, Fevers and Development Delay (SIFD) Syndrome. Front Immunol 2021; 12:586320. [PMID: 33936027 PMCID: PMC8079983 DOI: 10.3389/fimmu.2021.586320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 03/17/2021] [Indexed: 11/17/2022] Open
Abstract
Since the first description of the syndrome of sideroblastic anemia with immunodeficiency, fevers and development delay (SIFD), clinical pictures lacking both neurological and hematological manifestations have been reported. Moreover, prominent skin involvement, such as with relapsing erythema nodosum, is not a common finding. Up to this moment, no genotype and phenotype correlation could be done, but mild phenotypes seem to be located in the N or C part. B-cell deficiency is a hallmark of SIFD syndrome, and multiple others immunological defects have been reported, but not high levels of double negative T cells. Here we report a Brazilian patient with a novel phenotype of SFID syndrome, carrying multiple immune defects and harboring a novel mutation on TRNT1 gene.
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Affiliation(s)
- Leonardo Oliveira Mendonca
- Clinical Immunology and Allergy, School of Medicine, University of São Paulo, São Paulo, Brazil.,Laboratory for Immunological Investigation (LIM-19), Heart Institute, University of São Paulo, São Paulo, Brazil
| | - Alex Isidoro Prado
- Clinical Immunology and Allergy, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Marcia Bandeira
- Department of Pediatric Rheumatology, Hospital Pequeno Príncipe, Paraná, Brazil
| | - Rafael Dyer
- Department of Surgical Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Samar Freschi Barros
- Laboratory for Immunological Investigation (LIM-19), Heart Institute, University of São Paulo, São Paulo, Brazil
| | - Karen Francine Khöler
- Laboratory for Immunological Investigation (LIM-19), Heart Institute, University of São Paulo, São Paulo, Brazil
| | | | - Jorge Kalil
- Clinical Immunology and Allergy, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Fabio Morato Castro
- Clinical Immunology and Allergy, School of Medicine, University of São Paulo, São Paulo, Brazil
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