ABSTRACT
El síndrome de Bardet Biedl es un síndrome genético de herencia autosómica recesiva con compromiso multisistémico y gran variabilidad en su presentación clínica; son características la obesidad, la polidactilia, el hipogonadismo y las alteraciones renales, visuales y cognitivas. Pertenece a las llamadas ciliopatías. El diagnóstico es clínico y puede ser confirmado por estudios genéticos. No existe un tratamiento específico de la patología; se requiere un abordaje multidisciplinario. Se presenta el caso de una paciente de 13 años con obesidad e hiperfagia, diabetes tipo 2, hipotiroidismo, polidactilia, alteraciones del aprendizaje y alteraciones visuales. Se le realizó un panel genético para obesidad en el que se detectaron dos variantes heterocigotas patológicas en el gen BBS2.
Bardet Biedl syndrome is an autosomal recessive ciliopathie. It is a pleiotropic disorder characterised by retinal dystrophy, renal dysfunction, polydactyly, obesity, cognitive deficitand hypogenitalism. Diagnosis is based on clinical features. Molecular genetic testing is available. There is no specific treatment, a multidisciplinary approach is required. We report the case of a 13-year-old female patient with obesity and hyperphagia, type 2 diabetes, hypothyroidism, polydactyly,cognitive deficit and visual impairment. A multigenic panel allowed the identification of two heterozygous pathogenic variants in the BBS2 gene.
Subject(s)
Humans , Female , Adolescent , Polydactyly/diagnosis , Bardet-Biedl Syndrome/complications , Bardet-Biedl Syndrome/diagnosis , Bardet-Biedl Syndrome/genetics , Diabetes Mellitus, Type 2 , Obesity/diagnosisABSTRACT
Resumo A Síndrome de Bardet-Biedl é uma desordem autossômica recessiva rara, com heterogeneidade clínica e genética. As principais características são retinopatia pigmentar, obesidade, polidactilia, dificuldades de aprendizado, diversos graus de deficiência intelectual, anomalias renais e hipogonadismo. O objetivo desse trabalho é relatar dois casos de síndrome de Bardet-Biedl em pacientes diagnosticados no Instituto Benjamin Constant e fazer uma revisão literária da síndrome. Revisão de prontuário e pesquisa bibliográfica nas bases de dados do PubMed, SciELO, MEDLINE e LILACS. Atualmente não há tratamento para a Síndrome de Bardet-Biedl, mas o diagnóstico precoce é importante para orientar a gestão da criança através de uma avaliação regular da pressão arterial, peso, estudos de imagiologia renais, exames oftalmológicos e apoio psicológico.
Abstract The Bardet-Biedl Syndrome is a rare autosomal recessive disorder with clinical and genetic heterogeneity. Its main characteristics are pigmentary retinopathy, obesity, polydactyly, learning disabilities, various degrees of intellectual disability, renal anomalies and hypogonadism. The objective of this study is to report two cases of the Bardet-Biedl syndrome in patients diagnosed at the Benjamin Constant Institute and to perform a literary review of the syndrome. Review of medical records and bibliographic research were made from the PubMed, SciELO, MEDLINE and LILACS databases. Currently, treatment for the Bardet-Biedl Syndrome does not exist, but early diagnosis is important to guide the child through a regular assessment of blood pressure, weight, renal imaging studies, eye exams and psychological support.
Subject(s)
Humans , Female , Adolescent , Adult , Retinitis Pigmentosa/etiology , Bardet-Biedl Syndrome/complications , Retinal Dystrophies/etiology , Retina/pathology , Retinitis Pigmentosa/diagnosis , Bardet-Biedl Syndrome/diagnosis , Bardet-Biedl Syndrome/genetics , Tomography, Optical Coherence , Diagnostic Techniques, Ophthalmological , Retinal Dystrophies/diagnosisABSTRACT
Bardet-Biedl syndrome (BBS) is a rare autosomal recessive disorder with clinical and genetic heterogeneity. This syndrome was first described by Laurence and Moon in 1866 and additional cases were described by Bardet and Biedl between 1920 and 1922. The main features are obesity, polydactyly, pigmentary retinopathy, learning disabilities, various degrees of intellectual impairment, hypogonadism, and renal abnormalities. Bardet-Biedl syndrome is both phenotypically and genetically heterogeneous. Clinical diagnosis is based on the presence of 4 of the 5 cardinal features. The authors present a typical case of pigmentary retinopathy due to Bardet-Biedl syndrome and made a brief commentary about the disease's cardinal manifestations.
A síndrome de Bardet-Biedl (BBS) é uma desordem autossômica recessiva rara, com heterogeneidade clínica e genética. Esta síndrome foi descrita pela primeira vez por Laurence e Moon em 1866 e outros casos foram descritos por Bardet e Biedl entre 1920 e 1922. As principais características são obesidade, polidactilia, retinopatia pigmentar, dificuldades de aprendizagem, graus de deficiência intelectual diversos, hipogonadismo e anomalias renais. Síndrome de Bardet-Biedl é fenotipicamente e geneticamente heterogêneos. O diagnóstico clínico baseia-se na presença de quatro dos cinco sinais principais da síndrome. Os autores apresentam um caso típico de retinopatia pigmentar devido à síndrome de Bardet-Biedl e fazem uma breve revisão sobre as manifestações da síndrome com especial atenção à retinopatia pigmentar.
Subject(s)
Adolescent , Female , Humans , Bardet-Biedl Syndrome/complications , Retinitis Pigmentosa/etiology , Retinitis Pigmentosa/pathologyABSTRACT
Laurence-Moon-Bardet-Biedl syndrome is a rare, genetically heterogeneous, autosomal recessive inherited disorder with wide variability in expression. We report a case of Laurence-Moon-Bardet-Biedl syndrome with typical phenotype in conjunction with nonalcoholic steatohepatitis. The diagnosis had been missed until the patient presented at our hospital.
Subject(s)
Bardet-Biedl Syndrome/complications , Child , Diagnosis, Differential , Diet, Carbohydrate-Restricted/methods , Exercise Therapy/methods , Fatty Liver/diagnosis , Follow-Up Studies , Humans , MaleSubject(s)
Adolescent , Anesthetics, Local/therapeutic use , Anti-Bacterial Agents/therapeutic use , Aortic Valve Insufficiency/complications , Aspirin/therapeutic use , Bardet-Biedl Syndrome/complications , Ceftriaxone/therapeutic use , Endocarditis/drug therapy , Gentamicins/therapeutic use , Humans , Male , Penicillins/therapeutic use , Platelet Aggregation Inhibitors/therapeutic use , Procaine/therapeutic use , Rheumatic Heart Disease/complications , Risk FactorsABSTRACT
Duane's retraction syndrome (DRS) includes changes in palpebral fissure width along with restriction of ocular motility. Bardet Biedl syndrome (BBS) includes presence of retinitis pigmentosa (RP) with obesity, mental retardation, polydactyly and renal abnormalities. We report a case of rare association of DRS with BBS in a seven-year-old child. The ocular motility examination revealed left DRS with esotropia. Fundus examination revealed findings characteristic of an atypical retinitis pigmentosa. The electro-retinogram waveforms were extinguished both for rods and cones. He was diagnosed as a case of BBS on the basis of the ophthalmological findings plus association with the systemic features of obesity, polydactyly, hypogonadism, mental retardation and renal abnormalities. This case gives further evidence of the fact that BBS may be associated with abnormalities of eye movements.