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2.
Einstein (Säo Paulo) ; 18: eRC5335, 2020. tab, graf
Article in English | LILACS | ID: biblio-1133770

ABSTRACT

ABSTRACT Chromosomal abnormalities are responsible for several congenital malformations in the world, some of these are associated to telomeric/subtelomeric deletions. The abnormalities involving the telomere of chromosome 12 are rare, with few reports of deletions involving 12q24.31 region in the literature, and, to our knowledge, only four of them in the 12q24.31-q24.33 region. We report a further case of interstitial deletion of bands 12q24.31-q24.33 associated with autism spectrum disorder. A 2-year-old boy with global developmental delay associated with multiple congenital anomalies. The Human Genome CGH Microarray 60K confirmed the diagnosis of 12q deletion syndrome. This study made a review of the current literature comparing our patient with previously reported cases. These detailed analyses contribute to the development of genotype/phenotype correlations for 12q deletions that will aid in better diagnosis and prognosis of this deletion.


RESUMO Anomalias cromossômicas são responsáveis por inúmeras malformações congênitas no mundo, algumas delas associadas a deleções teloméricas/subteloméricas. As anomalias que envolvem o telômero do cromossomo 12 são raras, com poucos relatos na literatura sobre deleções relacionados à região 12q24.31 e, até onde sabemos, apenas quatro deles na região 12q24.31-q24.33. Relatamos um outro caso de deleção intersticial das bandas 12q24.31-q24.33 associada ao transtorno do espectro do autismo. Trata-se de um menino de 2 anos de idade com atraso global no desenvolvimento associado a múltiplas anomalias congênitas. A utilização do Human Genome CGH Microarray 60K confirmou o diagnóstico da síndrome de deleção 12q. Este estudo fez uma revisão da literatura atual, comparando nosso paciente com casos previamente relatados. Estas análises detalhadas contribuem para o desenvolvimento de correlações genótipo/fenótipo para deleções 12q, que ajudam aos melhores diagnóstico e prognóstico desta deleção.


Subject(s)
Humans , Male , Child, Preschool , Autistic Disorder/genetics , Chromosomes, Human, Pair 12/genetics , Chromosome Disorders/pathology , Rare Diseases/genetics , Autism Spectrum Disorder/genetics , Abnormalities, Multiple , Chromosome Aberrations , Chromosome Deletion
3.
Ciênc. Saúde Colet. (Impr.) ; 24(10): 3637-3650, Oct. 2019. tab
Article in Portuguese | LILACS | ID: biblio-1039467

ABSTRACT

Resumo As doenças genéticas raras constituem um importante problema de saúde pública, mas ainda são pouco estudadas na perspectiva da Saúde Coletiva. Este artigo tem por objetivo analisar os itinerários terapêuticos de pacientes com doenças genéticas raras nas cidades do Rio de Janeiro, Salvador e Porto Alegre, tendo por foco os desafios materiais, emocionais e estruturais enfrentados na busca por diagnóstico e tratamento. Foram realizadas entrevistas semiestruturadas com pacientes/cuidadores e profissionais de saúde em serviços públicos de genética médica. Observou-se que a experiência da doença genética rara, além de ser um desafio em si pelo caráter debilitante e incapacitante, é agravada por problemas de ordem prático-relacionais e burocrático-institucionais que não se resolvem com a chegada a um serviço especializado. A existência de longos itinerários terapêuticos até o diagnóstico, o desconhecimento dos médicos não geneticistas sobre as doenças raras, as dificuldades de transporte e de acesso a especialistas, a exames diagnósticos e complementares e o acesso a medicamentos e insumos alimentares de alto custo foram comuns às narrativas nas três cidades. A adesão aos cuidados oferecidos exigem estratégias de ação que dependem de arranjos envolvendo familiares, médicos, associações de pacientes e o Estado.


Abstract Rare genetic diseases are an important public health problem, but they are still little studied in Collective Health. This article aims to analyze the 'therapeutic itineraries' of patients in search of a diagnosis and treatment for rare genetic diseases in the cities of Rio de Janeiro, Salvador and Porto Alegre. It focuses on the material challenges, emotional and structural problems faced in these trajectories. Semi-structured interviews were conducted with patients/caregivers and health professionals in the context of public health medical genetics. Our findings suggest that the experience of the rare genetic disease is aggravated by practical, inter-relational and bureaucratic/institutional problems. The reality of long and circuitous journeys to obtain a diagnosis, non-geneticists' lack of knowledge about rare diseases, difficulties in transportation and access to specialists, diagnostic and complementary examinations, and access to high-cost medicines and food supplies were common challenges in all the narratives examined in the three Brazilian cities. In addition, adherence to care provided by medical genetics requires action and strategies that depend on arrangements involving family members, physicians, patient associations, and the state.


Subject(s)
Humans , Public Health , Rare Diseases/diagnosis , Genetic Diseases, Inborn/diagnosis , Brazil , Interviews as Topic , Patient Compliance , Cities , Caregivers/statistics & numerical data , Health Personnel/statistics & numerical data , Rare Diseases/genetics , Rare Diseases/therapy , Health Services Accessibility , Genetic Diseases, Inborn/therapy
4.
Ciênc. Saúde Colet. (Impr.) ; 24(10): 3683-3700, Oct. 2019. tab, graf
Article in Portuguese | LILACS | ID: biblio-1039481

ABSTRACT

Resumo Atualmente, há entre seis e oito mil adoecimentos catalogados por doenças raras, sendo que 80% são de origem genética e entre os estudos sobressaem os de natureza quantitativa e biomédica. Objetivou-se identificar e descrever as características dos estudos científicos, no Brasil e internacionalmente, com abordagem qualitativa, acerca das doenças genéticas raras publicados em bases indexadas na área da saúde e das ciências sociais. Utilizaram-se as bases de dados Scielo, Lilacs, Medline, PubMed, BDENF, Web of Science, Scopus e CINAHL, com os descritores: "Qualitative Research" e "Rare Disease", entre 2013-2018. Foram selecionados 171 artigos, classificados por ano, país, idioma, tipo de doença rara, estratégia de coleta de dados, área de conhecimento e tema. As produções revelam a pertinência dos estudos qualitativos sobre doença genética rara no seu potencial para subsidiar a organização, a tomada de decisões e a formação em saúde, de maneira que respondam às necessidades sociais e individuais da comunidade. É importante, todavia, desenvolver mais estudos, principalmente brasileiros, que abordem as condições genéticas raras, relevando as vivências e os afetamentos nas interações pessoais, familiares, profissionais e organizacionais perante os modos próprios e efetivos de cuidar.


Abstract There are currently between six and eight thousand illnesses classified as rare diseases, 80% of which are of genetic origin and among the studies those of a quantitative and biomedical nature stand out. The objective of this study was to identify and describe the characteristics of scientific studies in Brazil and worldwide using a qualitative approach on rare genetic diseases published in indexed databases in the area of health and social sciences. The Scielo, Lilacs, Medline, PubMed, BDENF, Web of Science, Scopus and CINAHL databases were researched between 2013-2018 using the key words "Qualitative Research" and "Rare Disease." A total of 171 articles, classified by year, country, language, rare disease type, data collection strategy, knowledge area and theme were selected. The texts reveal the relevance of qualitative studies on rare genetic diseases in their ability to support organization, decision-making and health training in a way that responds to the social and individual needs of the community. It is important, however, to conduct further studies, especially within Brazil, that address rare genetic conditions, revealing the experiences and how they affect the personal, family, professional and organizational interactions in terms of the proper and effective modes of care.


Subject(s)
Humans , Global Health , Rare Diseases/epidemiology , Genetic Diseases, Inborn/epidemiology , Brazil/epidemiology , Delivery of Health Care/organization & administration , Rare Diseases/genetics , Qualitative Research , Genetic Diseases, Inborn/genetics
5.
Ciênc. Saúde Colet. (Impr.) ; 24(10): 3627-3636, Oct. 2019. tab, graf
Article in Portuguese | LILACS | ID: biblio-1039493

ABSTRACT

Resumo Em um panorama diferente da maioria dos trabalhos do campo das chamadas doenças raras, esse artigo transpõe os limites das associações para chegar até as pessoas que vivem com o diagnóstico de uma condição genética e entendida como doença rara, a Neurofibromatose (NF). Nesse trajeto, utiliza-se da ainda nascente Sociologia do Diagnóstico para identificar tanto o impacto quanto as consequências do diagnóstico na vida das pessoas. Como resultado entende-se que devemos superar o olhar caritativo sobre as pessoas que vivenciam o diagnóstico de uma condição genética, o doente, para, como um informante-chave, captar as contribuições para melhorar os serviços de saúde e as nossas relações sociais.


Abstract Adopting a different viewpoint from most of the work in the field of so-called rare diseases, this paper crosses the boundaries of the associations to reach people living with the diagnosis of a genetic condition, which is understood as being a rare disease, namely neurofibromatosis (NF). In this respect, the incipient Sociology of Diagnosis is utilized to identify both the impact and the consequences of the diagnosis in people's lives. As a result, the consensus is that it is necessary to transcend the charitable outlook on people who experience the diagnosis of a genetic condition, by perceiving the patient as a key informant in order to collect input to improve health services and our social relations.


Subject(s)
Humans , Neurofibromatoses/diagnosis , Rare Diseases/diagnosis , Genetic Diseases, Inborn/diagnosis , Sociology, Medical , Neurofibromatoses/genetics , Rare Diseases/genetics
7.
Ciênc. Saúde Colet. (Impr.) ; 23(2): 369-380, Fev. 2018.
Article in Portuguese | LILACS | ID: biblio-890504

ABSTRACT

Resumo Este artigo analisa elementos comuns na trajetória de pessoas afetadas por doenças raras hereditárias no Brasil, tendo por cerne a busca por diagnóstico e tratamento, e a reprodutibilidade da família. Classificam-se como "raras" as doenças que afetam 65 pessoas a cada 100 mil. São condições geralmente crônicas e degenerativas, muitas delas sem cura ou tratamento efetivo. Cerca de 80% das doenças raras têm origem genética e são hereditárias. Este dado traz implicações importantes no que diz respeito às políticas de atenção à saúde da família, à reprodução e ao cuidado para condições clínicas que, em alguns casos, atravessam várias gerações. Para análise dos dados, articulam-se dois eixos teóricos: os estudos de família e parentesco e as análises sobre os sofrimentos de longa duração. A pesquisa desenvolveu-se junto a pessoas afetadas por doenças raras hereditárias e seus familiares, nos cenários políticos nos quais esses atores transitam, como associações de pacientes, congressos científicos e audiências públicas. Evidencia-se a necessidade de construção de uma pauta contínua sobre as doenças raras no Brasil, capaz de promover de fato o acesso universal e integral das pessoas afetadas ao sistema público de saúde, e buscar soluções para minorar sofrimentos que ameaçam a própria continuidade da família.


Abstract This article analyzes common elements in the trajectory of people affected by rare hereditary diseases in Brazil, focusing on the search for diagnosis and treatment, and the reproducibility in the family. Rare diseases affect 65 people in every 100 thousand. These are usually chronic and degenerative conditions, many incurable or without effective treatment. About 80% of rare diseases are genetic in origin and can be inherited. This fact has important implications for family health care policies, reproduction, and care for clinical conditions that, in some cases, spanned generations. To analyze the data, two theoretical axes are articulated: family and kinship studies, and analyzes of long-term suffering. The research investigated people affected by rare hereditary diseases and their families, in the political scenarios in which these actors circulate, such as patient associations, scientific congresses and public hearings. There is evidence of the need to build a continuous agenda on rare diseases in Brazil capable of effectively promoting universal and integral access of the affected persons to the public health system, and seeking for solutions to alleviate suffering that threatens the very continuity of the family.


Subject(s)
Humans , Stress, Psychological/epidemiology , Delivery of Health Care/organization & administration , Rare Diseases/epidemiology , Genetic Diseases, Inborn/epidemiology , Brazil/epidemiology , Family Health , Rare Diseases/genetics , Rare Diseases/therapy , Health Policy , Health Services Accessibility , Genetic Diseases, Inborn/psychology , Genetic Diseases, Inborn/therapy
8.
Rev. Méd. Clín. Condes ; 26(4): 425-431, jul. 2015. tab
Article in Spanish | LILACS | ID: biblio-1129065

ABSTRACT

A partir de la década de los 80, las enfermedades raras han ido adquiriendo un lugar prioritario en los programas de salud y en la opinión pública. Se definen como aquellas que tienen una prevalencia menor a 1:2.000 individuos. En general son enfermedades crónicas, invalidantes y en más de un 80% de origen genético. Se estima que existen entre 7.000 y 8.000 enfermedades raras y que afectan al 6-8% de la población. Dada la baja prevalencia específica de cada afección, hay muy poco conocimiento de parte de la comunidad médica en relación a su diagnóstico y manejo. En este artículo se discute la importancia del diagnóstico de precisión, para su adecuado manejo y asesoramiento genético, también se muestra la importancia del trabajo en redes en las enfermedades de baja prevalencia y se destaca el rol fundamental de las agrupaciones de padres y familiares en promover políticas de salud para los afectados.


From the early 80's rare diseases had achieved a priority role in national health programs and in public opinion. Rare diseases are define as the ones who have a prevalence lower than 1:2000 habs. Generally, they are chronic and life threatening diseases and more than 80% of them are from genetic origin. It is estimated that there are between 7,000 and 8,000 different rare diseases affecting 6-8% of world population. Due to the low prevalence of each disease, there are very poor knowledge in the medical community about their diagnosis and management. In this review we discuss about the importance of the precise molecular diagnosis for the best treatment and genetic counselling; we also showed the importance of working in network in these diseases of low prevalence and we discuss about the fundamental role of parents associations in promoting public health politics for affected people.


Subject(s)
Humans , Rare Diseases/diagnosis , Rare Diseases/genetics , Rare Diseases/epidemiology , Orphan Drug Production , Phenotype , Prevalence , Genetic Counseling , International Cooperation
9.
Rev. Méd. Clín. Condes ; 26(4): 432-441, jul. 2015. ilus, tab
Article in Spanish | LILACS | ID: biblio-1129069

ABSTRACT

El diagnóstico y manejo prenatal de enfermedades raras involucra un estudio multidisciplinario. Desde una visión obstétrica, herramientas de imagenología como la ultrasonografía y en menor medida la resonancia magnética fetal (RMF) son esenciales para el diagnóstico de anomalías morfológicas y sospecha de defectos cromosómicos. Para el diagnóstico de enfermedades cromosómicas el estudio de cariograma obtenido de vellosidades coriales, líquido amniótico o sangre fetal mediante técnicas invasivas tal como biopsia corial, amniocentesis o cordocentesis ha sido hasta hace poco el gold standard del diagnóstico. Nuevas técnicas moleculares capaces de detectar microdeleciones como es el microarray nos ha permitido aproximarnos al origen de las enfermedades raras. Se revisarán además algunos de los defectos anatómicos raros y su enfoque neonatal.


Prenatal diagnosis and management of rare diseases is a multidisciplinary task. From the obstetric vision, prenatal diagnosis is based on fetal images obtained by ultrasound or magnetic resonance and fetal chromosomes study. The study of fetal morphology allows us the diagnosis of fetal abnormalities and the suspicion of chromosomal defects. Fetal chromosomal study is obtained either by chorionic villus sampling, amniocentesis and cordocentesis, all associated to fetal risk. New screening techniques such as fetal DNA on maternal blood or the study of fetal micro deletions using micro Array on amniotic fluid has extended diagnostic opportunity of rare fetal diseases. We will review some of the most common rare diseases and the neonatal approach.


Subject(s)
Humans , Female , Pregnancy , Rare Diseases/diagnostic imaging , Fetal Diseases/diagnostic imaging , Magnetic Resonance Imaging , Mass Screening , Chromosome Aberrations , Ultrasonography , Rare Diseases/genetics , Fetal Diseases/genetics , Hernia, Diaphragmatic/diagnostic imaging , Nervous System Diseases/diagnostic imaging
10.
Journal of Korean Medical Science ; : 214-217, 2015.
Article in English | WPRIM | ID: wpr-141143

ABSTRACT

Potocki-Shaffer syndrome (PSS, OMIM #601224) is a rare contiguous gene deletion syndrome caused by haploinsufficiency of genes located on the 11p11.2p12. Affected individuals have a number of characteristic features including multiple exostoses, biparietal foramina, abnormalities of genitourinary system, hypotonia, developmental delay, and intellectual disability. We report here on the first Korean case of an 8-yr-old boy with PSS diagnosed by high resolution microarray. Initial evaluation was done at age 6 months because of a history of developmental delay, hypotonia, and dysmorphic face. Coronal craniosynostosis and enlarged parietal foramina were found on skull radiographs. At age 6 yr, he had severe global developmental delay. Multiple exostoses of long bones were detected during a radiological check-up. Based on the clinical and radiological features, PSS was highly suspected. Subsequently, chromosomal microarray analysis identified an 8.6 Mb deletion at 11p11.2 [arr 11p12p11.2 (Chr11:39,204,770-47,791,278)x1]. The patient continued rehabilitation therapy for profound developmental delay. The progression of multiple exostosis has being monitored. This case confirms and extends data on the genetic basis of PSS. In clinical and radiologic aspect, a patient with multiple exostoses accompanying with syndromic features, including craniofacial abnormalities and mental retardation, the diagnosis of PSS should be considered.


Subject(s)
Child , Humans , Male , Chromosome Deletion , Chromosome Disorders/diagnosis , Chromosome Mapping , Chromosomes, Human, Pair 11/genetics , Craniofacial Abnormalities/genetics , Developmental Disabilities/genetics , Exostoses, Multiple Hereditary/diagnosis , Muscle Hypotonia/genetics , Oligonucleotide Array Sequence Analysis , Rare Diseases/genetics , Republic of Korea
11.
Journal of Korean Medical Science ; : 214-217, 2015.
Article in English | WPRIM | ID: wpr-141142

ABSTRACT

Potocki-Shaffer syndrome (PSS, OMIM #601224) is a rare contiguous gene deletion syndrome caused by haploinsufficiency of genes located on the 11p11.2p12. Affected individuals have a number of characteristic features including multiple exostoses, biparietal foramina, abnormalities of genitourinary system, hypotonia, developmental delay, and intellectual disability. We report here on the first Korean case of an 8-yr-old boy with PSS diagnosed by high resolution microarray. Initial evaluation was done at age 6 months because of a history of developmental delay, hypotonia, and dysmorphic face. Coronal craniosynostosis and enlarged parietal foramina were found on skull radiographs. At age 6 yr, he had severe global developmental delay. Multiple exostoses of long bones were detected during a radiological check-up. Based on the clinical and radiological features, PSS was highly suspected. Subsequently, chromosomal microarray analysis identified an 8.6 Mb deletion at 11p11.2 [arr 11p12p11.2 (Chr11:39,204,770-47,791,278)x1]. The patient continued rehabilitation therapy for profound developmental delay. The progression of multiple exostosis has being monitored. This case confirms and extends data on the genetic basis of PSS. In clinical and radiologic aspect, a patient with multiple exostoses accompanying with syndromic features, including craniofacial abnormalities and mental retardation, the diagnosis of PSS should be considered.


Subject(s)
Child , Humans , Male , Chromosome Deletion , Chromosome Disorders/diagnosis , Chromosome Mapping , Chromosomes, Human, Pair 11/genetics , Craniofacial Abnormalities/genetics , Developmental Disabilities/genetics , Exostoses, Multiple Hereditary/diagnosis , Muscle Hypotonia/genetics , Oligonucleotide Array Sequence Analysis , Rare Diseases/genetics , Republic of Korea
12.
Arq. bras. endocrinol. metab ; 58(9): 962-966, 12/2014. tab, graf
Article in English | LILACS | ID: lil-732181

ABSTRACT

Reduced sensitivity to thyroid hormones (RSTH) is a rare disease that affects about 3,000 individuals, belonging to about 1,000 families. It results from reduced intracellular action of thyroid hormones (TH) genetically determined and manifests as persistent hyperthyroxinemia with non-suppressed thyroid-stimulating hormone (TSH). We describe a 67-years old, Caucasian woman, with past history of subtotal thyroidectomy due to diffuse goiter, who presents with a recurrence of goiter. Although she is clinically euthyroid, laboratory evaluation shows persistent hyperthyroxinemia with non-suppressed TSH. Response to thyrotropin releasing hormone (TRH) test was normal and TSH concentrations were not suppressed during oral administration of suprafisiologic doses of levothyroxine (L-T4). Peripheral blood DNA was extracted from the patient and a mutation was found localized in cluster one, at codon 346 of the ligand binding domain of the THRB gene. The patient’s son underwent thyroid function testing (TFT) and genetic study, both negative, suggesting a sporadic mutation. RSTH should be considered in all hyperthyroxinemic patients who are clinically euthyroid. Mutations interfering with three major steps required for TH action on target tissues have been, so far, identified (TR-β, TR-α, MCT8, SPB2). Each mutation is associated with a distinctive syndrome. Goal of management is to maintain a normal serum TSH level and a eumetabolic state and offer appropriate genetic counselling and prenatal diagnosis. Inappropriate treatment of eumetabolic patients results in hypothyroidism and need for TH replacement.


A sensibilidade reduzida aos hormônios tiroidianos (RSTH) é uma doença rara que afeta cerca de 3.000 indivíduos em 1.000 famílias. Ela resulta de uma ação intracelular reduzida de hormônios tiroidianos (TH), é geneticamente determinada e se manifesta como hipertiroxinemia persistente com hormônio tireoestimulante (TSH) não suprimido. Descrevemos o caso de uma mulher caucasiana de 67 anos de idade com histórico de tiroidectomia subtotal por bócio difuso e que apresentou recorrência do bócio. Embora ela fosse clinicamente eutiroide, a avaliação laboratorial mostrou hipertiroxinemia persistente com TSH não suprimido. A resposta ao hormônio liberador da tireotrofina (TRH) foi normal e as concentrações de TSH não foram suprimidas durante a administração oral de doses suprafisiológicas de levotiroxina (L-T4). Foi extraído DNA de sangue periférico da paciente e encontrada uma mutação no cluster um do códon 346 do domínio de ligação do ligante do gene THRB. O filho da paciente foi submetido a um teste de função da tiroide e a um estudo genético, ambos negativos, o que sugeriu uma mutação esporádica. O RSTH deve ser considerado em todos os pacientes hipertiroxinêmicos que sejam clinicamente eutiroides. Foram identificadas, até hoje, mutações que interferem com os três passos principais necessários para a ação do TH sobre os tecidos-alvo (TR-b, TR-α, MCT8, SPB2). Cada mutação está associada com uma síndrome distinta. O objetivo do manejo é manter o nível sérico normal de TSH e um estado eumetabólico, além de se oferecer aconselhamento genético adequado e diagnóstico pré-natal. O tratamento inadequado de pacientes eumetabólicos leva ao hipotireoidismo e requer reposição de TH.


Subject(s)
Aged , Female , Humans , Mutation , Rare Diseases/genetics , Thyroid Hormone Resistance Syndrome/genetics , DNA , Exons , Genes, erbA , Goiter/genetics , Hyperthyroxinemia/blood , Polymerase Chain Reaction , Recurrence , Receptors, Thyrotropin-Releasing Hormone/blood , Receptors, Thyrotropin-Releasing Hormone/drug effects , Thyroid Function Tests , Thyrotropin/blood , Thyrotropin/drug effects , Thyroxine/pharmacology
13.
An. bras. dermatol ; 89(3): 486-489, May-Jun/2014. graf
Article in English | LILACS | ID: lil-711602

ABSTRACT

Incontinentia pigmenti is a rare X-linked genodermatosis that affects mainly female neonates. The first manifestation occurs in the early neonatal period and progresses through four stages: vesicular, verruciform, hyperpigmented and hypopigmented. Clinical features also manifest themselves through changes in the teeth, eyes, hair, central nervous system, bone structures, skeletal musculature and immune system. The authors report the case of a patient with cutaneous lesions and histological findings that are compatible with the vesicular stage, emphasizing the importance of early diagnosis and appropriate therapeutic management.


Subject(s)
Female , Humans , Infant , Genetic Diseases, X-Linked/pathology , Incontinentia Pigmenti/pathology , Rare Diseases/pathology , Rare Diseases/genetics , Skin Diseases, Vesiculobullous/genetics , Skin Diseases, Vesiculobullous/pathology
14.
Arq. bras. endocrinol. metab ; 57(5): 333-338, jul. 2013. ilus, tab
Article in Portuguese | LILACS | ID: lil-680619

ABSTRACT

Uma nova apresentação da insensibilidade ao hormônio de crescimento (IGH), causada por mutações em homozigose no gene STAT5B (transdutor de sinal e ativador de transcrição tipo 5B), foi caracterizada nos últimos anos. Sua particularidade é a associação com quadros de disfunção imunológica grave, sendo o mais característico a pneumonite intersticial linfocítica. A presença concomitante de doenças crônicas imunológicas pode fazer com que a baixa estatura seja erroneamente considerada uma consequência do quadro clínico, levando ao subdiagnóstico dessa forma de IGH. O objetivo desta revisão é divulgar o conhecimento atual sobre essa rara patologia, facilitando o reconhecimento de pacientes com IGH secundária a mutações no gene STAT5B em ambulatórios de endocrinologia e de outras especialidades.


A new presentation of growth hormone insensitivity (GHI) caused by homozygous mutations in STAT5B (signal transducer and activator of transcription 5B) gene has been characterized in the last years. Its particularity is the association with severe immune dysfunction, especially with lymphocytic interstitial pneumonitis. This may mislead physicians into considering short stature as secondary to chronic immunological disease and consequently into underdiagnosing this form of GHI. The objective of this review is to propagate current knowledge about this rare pathology, facilitating the diagnosis of patients with GHI due to STAT5B mutations in endocrinology and other specialties clinics.


Subject(s)
Humans , Human Growth Hormone/genetics , Immune System Diseases/genetics , Laron Syndrome/genetics , Mutation , Rare Diseases/genetics , /deficiency , Immune System Diseases/immunology , Interleukins/metabolism , Laron Syndrome/therapy , Rare Diseases/immunology , Signal Transduction , /genetics , /immunology
15.
Clinics ; 68(5): 628-631, maio 2013. tab, graf
Article in English | LILACS | ID: lil-675765

ABSTRACT

OBJECTIVES: Familial steroid-sensitive idiopathic nephrotic syndrome is rare, and only approximately 3% of patients have affected siblings. METHODS: Herein, we report seven cases of patients with steroid-sensitive idiopathic nephrotic syndrome from three Chinese families. Mutational screening of the Nphs2 gene was performed in all the patients. RESULTS: All seven of the familial steroid-sensitive idiopathic nephrotic syndrome cases in our sample exhibited minimal change disease, and one case also presented with mesangial proliferative glomerulonephritis, according to the renal pathology. No significant was associations were found between Nphs2 gene mutations and the onset of proteinuria and nephrotic syndrome in these familial cases. CONCLUSIONS: The presence of minimal change disease is important, but it is not an unusual finding in patients with familial steroid-sensitive idiopathic nephrotic syndrome, which appears to be clinically benign and genetically distinct from other types of nephrosis. .


Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Male , Intracellular Signaling Peptides and Proteins/genetics , Membrane Proteins/genetics , Mutation/genetics , Nephrotic Syndrome/genetics , Polymorphism, Genetic/genetics , Rare Diseases/genetics , China , Nephrotic Syndrome/pathology , Pedigree , Rare Diseases/pathology
16.
Arq. bras. endocrinol. metab ; 56(8): 586-591, Nov. 2012. ilus, tab
Article in English | LILACS | ID: lil-660271

ABSTRACT

Medullary thyroid carcinoma (MTC) is a malignant tumor originating from parafollicular C-cells and accounts for 4-10% of all thyroid carcinomas. MTC develops in either sporadic (75%) or hereditary form (25%). Mutations in the RET proto-oncogene are responsible for hereditary MTC and the rate of heritable disease among apparently sporadic MTC (sMTC) cases varies from 6 to 15%. RET genetic testing is now considered fundamental in MTC management but the extent of the molecular analysis required to exclude inherited disease is still controversial. While the screening of all known mutation loci is recommended by some authors, the high costs associated with a full analysis should be also taken into consideration. Here, we illustrate and discuss this controversial issue by reporting a patient who present all characteristic features of sMTC, and in whom a standard genetic analysis by restriction enzyme restriction excluded hereditary disease. Nevertheless, an extensive molecular analysis that included all codons was prompted by the diagnosis of thyroid neoplasm in a patient's sister, and identified the rare intracellular RET p.Ser891Ala mutation. Arq Bras Endocrinol Metab. 2012;56(8):586-91.


O carcinoma medular de tireoide (CMT) é um tumor maligno originado das células C parafoliculares e corresponde a 4-10% de todos os carcinomas de tireoide. O CMT se desenvolve ou de forma esporádica (75%) ou hereditária (25%). As mutações no proto-oncogene RET são responsáveis pelo CMT hereditário, e a ocorrência de doença hereditária entre casos aparentemente esporádicos de CMT varia de 6 a 15%. A avaliação genética do RET é considerada fundamental no manejo do CMT, mas a extensão de análise molecular necessária para se excluir a doença hereditária ainda é controversa. Embora a avaliação de todos os loci de mutação conhecidos seja recomendada por alguns autores, os altos custos associados com a análise completa devem ser considerados. Neste relato, ilustramos e discutimos esse assunto controverso por meio do caso de um paciente que apresentou todas as características clássicas de CMT esporádico e no qual a análise genética por restrição enzimática excluiu a doença hereditária. No entanto, devido ao diagnóstico de uma neoplasia de tireoide em uma irmã do paciente, foi indicada uma análise molecular mais extensa que identificou a rara mutação intracelular p.Ser891Ala no proto-oncogene RET. Arq Bras Endocrinol Metab. 2012;56(8):586-91.


Subject(s)
Humans , Male , Middle Aged , Mutation/genetics , Proto-Oncogene Proteins c-ret/genetics , Thyroid Neoplasms/genetics , Pedigree , Rare Diseases/genetics
18.
An. bras. dermatol ; 86(4,supl.1): 39-41, jul,-ago. 2011. ilus
Article in Portuguese | LILACS | ID: lil-604116

ABSTRACT

O nevo branco esponjoso é uma desordem autossômica dominante, caracterizada por placas brancas difusas, rugosas, que afetam principalmente a mucosa bucal. A condição tem um alto grau de penetrância e expressividade variada, embora os relatos familiais sejam incomuns. Este artigo relata um caso familiar de nevo branco esponjoso em que duas irmãs são afetadas por esta condição.


White sponge nevus (WSN) is an autosomal dominant skin disorder characterized by white, corrugated and diffuse plaques mainly affecting the oral mucosa. The condition has a high penetrance and variable expressivity, but familial reports are uncommon. This report presents a familial case of WSN in which two sisters are affected by the disorder.


Subject(s)
Adolescent , Female , Humans , Leukokeratosis, Hereditary Mucosal/genetics , Mouth Diseases/genetics , Rare Diseases/genetics , Diagnosis, Differential , Leukokeratosis, Hereditary Mucosal/pathology , Mouth Diseases/pathology , Rare Diseases/pathology , Siblings
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