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      Autoimmune Polyendocrinopathy-Candidiasis-Ectodermal Dystrophy: Report of Seven Additional Sicilian Patients and Overview of the Overall Series from Sicily

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          Abstract

          Background: Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is a rare recessive inherited disease caused by the mutation of the AIRE gene on chromosome 21. To date, 8 Sicilian patients have been described and the R203X AIRE mutation was found to be the most common in this region. Aims: (1) To describe 7 additional Sicilian APECED patients and to review all 15 Sicilian APECED patients who have been investigated by our group in the last years, and (2) to report a novel AIRE gene mutation. Results: Among the 3 cardinal features of APECED, hypoparathyroidism has been already detected in all 15 patients, whereas Addison's disease and chronic mucocutaneous candidiasis have so far been found in 10/15 and 12/15 cases, respectively. In 2 consanguineous cases, AIRE gene analysis revealed a novel mutation, named IVS13+2T, in homozygosis. R203X was the most common mutation in this region (30% of alleles and 46.6% of patients), followed by R257X (20% of alleles and 40% of patients). Conclusions: Sicilian APECED patients are confirmed to have some peculiar characteristics from a clinical and genetic point of view. No correlations between genotype and phenotype were identified.

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          Most cited references20

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          Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy.

          Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy is known as a rare hereditary disease with classic triad of mucocutaneous candidiasis, hypoparathyroidism, and adrenocortical failure, two of which, diagnostic dyad, are required for the diagnosis. Evidently many patients suffer unrecognized because the condition is more variable and complex. The objective of the study was to describe the variability of autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy for promoting recognition and adequate follow-up of patients. The Finnish series of patients is the largest internationally. The study population was all 91 known Finnish patients. Besides the classical triad, a dozen autoimmune endocrine and other components occurred variably, several of them dangerous. The initial manifestation appeared within the age range of 0.2-18 yr, mucocutaneous candidiasis being part of it in 60% of the patients, hypoparathyroidism in 32%, and adrenocortical failure in 5%. But 23% of the patients had one to six other components before the diagnostic dyad: hepatitis, keratoconjunctivitis, chronic diarrhea, periodic rash with fever. The dyad appeared 0.2-20 yr later. Prevalence of most components increased with age, diabetes mellitus, hypothyroidism, and testicular failure becoming common toward middle age. Tubulointerstitial nephritis occurred in 9% of the patients, apparent mineralocorticoid excess in 9%, asplenia in 19% of adults, and oral or esophageal squamous cell carcinoma in 10% of patients older than 25 yr. Any child or young adult with one of the many disease components should be examined for others and consideration of AIRE mutation assay.
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            Clinical manifestations and management of patients with autoimmune polyendocrine syndrome type I.

            Autoimmune polyendocrine syndrome type I (APS-I) is a monogenic model disease of autoimmunity. Its hallmarks are chronic mucocutaneous candidosis, hypoparathyroidism and adrenal insufficiency, but many other autoimmune disease components occur less frequently. The first components usually appear in childhood, but may be delayed to adolescence or early adult life. There is enormous variation in presentation and phenotype, which makes the diagnosis difficult. Antibodies against interferon-omega and -alpha have recently been shown to be sensitive and relatively specific markers for APS-I, and mutational analysis of the autoimmune regulator gene gives the diagnosis in >95% of cases. The treatment and follow-up of patients is demanding and requires the collaboration of specialists of several fields. However, the literature is especially sparse regarding information on treatment and follow-up; hence, we present here a comprehensive overview on clinical characteristics, treatment and follow-up based on personal experience and published studies.
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              Polyglandular autoimmune syndrome type I among Iranian Jews.

              Polyglandular autoimmune syndrome (PAS) has been well characterised and the accepted criteria for diagnosis are the presence of at least two of the three major components: hypoparathyroidism (HPT), candidiasis, and adrenal insufficiency (AI). HPT may, however, be the only manifestation of the syndrome. Iranian Jews, having a high rate of consanguinity, appear to be a community in which PAS type I is frequent. We report on 19 families of patients with HPT from the Iranian Jewish community assuming that they are in fact affected with PAS type I. In the 19 families, 23 patients were affected, including 11 males and 12 females. All the patients but one had HPT (96%), and most were diagnosed by the age of 20 years (91%). AI was diagnosed in five of our patients; in all cases but one it appeared after HPT. Mild oral candidiasis was present in four patients and six of the patients (three males and three females) had hypogonadism. Other features of the syndrome found in some of our patients were pernicious anaemia, hypothyroidism, and alopecia. The disease is autosomal recessive and the calculated prevalence among the Iranian Jews is 1:6500 to 1:9000. The disease is also found with a very high incidence among Finns. A comparison of the symptoms between the two groups showed clinical differences including the relative rarity of candidiasis and absence of keratopathy among the Iranian Jews.
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                Author and article information

                Journal
                HRP
                Horm Res Paediatr
                10.1159/issn.1663-2818
                Hormone Research in Paediatrics
                S. Karger AG
                1663-2818
                1663-2826
                2014
                August 2014
                23 July 2014
                : 82
                : 2
                : 127-132
                Affiliations
                aUnit of Pediatrics, Department of Pediatric Sciences, University of Messina, Messina, bAutoimmunity Laboratory, Immunology and Pharmacotherapy Area and cDivision of Endocrinology, Bambino Gesù Children's Hospital IRCCS, Rome, dEndocrine Unit, Ospedali Riuniti, Palermo, and eEndocrine Unit, Department of Medicine (DIMED), University of Padua, Padua, Italy
                Author notes
                *Mariella Valenzise, Unit of Pediatrics, Department of Pediatric Sciences, University of Messina, Via Consolare Valeria, IT-98126 Messina (Italy), E-Mail marielvale@hotmail.com
                Article
                363537 Horm Res Paediatr 2014;82:127-132
                10.1159/000363537
                25059117
                8ad7c98b-3e30-46ca-9cb8-e7b02abafa56
                © 2014 S. Karger AG, Basel

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                : 21 February 2014
                : 30 April 2014
                Page count
                Figures: 1, Tables: 3, Pages: 6
                Categories
                Original Paper

                Endocrinology & Diabetes,Neurology,Nutrition & Dietetics,Sexual medicine,Internal medicine,Pharmacology & Pharmaceutical medicine
                AIRE gene,Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy,Endocrine autoimmunity

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