Access to genetic evaluation of 1463 individuals with orofacial cleft in Brazil.

OBJECTIVE: The current study delves into the accessibility of genetic evaluations for individuals with orofacial clefts (OC), comparing data between genetics and treatment centers across Brazil. METHODS: This cross-sectional retrospective study analyzed primary data from 1463 OC individuals registered in the Brazilian Database of Craniofacial Anomalies (BDCA) between 2008 and 2018 without age or sex selection. Diagnostic exam results stemming from research projects until 2023 were considered. RESULTS: Of the 1463 individuals with typical OC, 987 were non-syndromic, 462 were syndromic (SOC), 10 presented atypical forms, and three were not specified OC cases. The average age for accessing laboratory diagnosis was 8.5 years among SOC individuals. Notably, more SOC cases were registered in genetics centers than treatment and rehabilitation centers (37.1 % vs. 29 %, p = 0.0015). Those originating from genetics centers accessed diagnosis at an average age of 7.3 years, while those from treatment and rehabilitation centers experienced delays with an average age of 10.7 years (p = 0.0581). CONCLUSIONS: Irrespective of the center of origin, the data highlight delayed diagnosis and challenges in accessing genetic tests for the syndromic group. Given the widespread reliance on the public health system by most of the Brazilian population, disseminating this data can significantly contribute to shaping an informed perspective on healthcare access. These insights can improve public policies tailored to the unique needs of individuals with OC.

22q11.2 Deletion Syndrome: Influence of Parental Origin on Clinical Heterogeneity.

22q11.2 deletion syndrome (22q11.2DS) shows significant clinical heterogeneity. This study aimed to explore the association between clinical heterogeneity in 22q11.2DS and the parental origin of the deletion. The parental origin of the deletion was determined for 61 individuals with 22q11.2DS by genotyping DNA microsatellite markers and single-nucleotide polymorphisms (SNPs). Among the 61 individuals, 29 (47.5%) had a maternal origin of the deletion, and 32 (52.5%) a paternal origin. Comparison of the frequency of the main clinical features between individuals with deletions of maternal or paternal origin showed no statistically significant difference. However, Truncus arteriosus, pulmonary atresia, seizures, and scoliosis were only found in patients with deletions of maternal origin. Also, a slight difference in the frequency of other clinical features between groups of maternal or paternal origin was noted, including congenital heart disease, endocrinological alterations, and genitourinary abnormalities, all of them more common in patients with deletions of maternal origin. Although parental origin of the deletion does not seem to contribute to the phenotypic variability of most clinical signs observed in 22q11.2DS, these findings suggest that patients with deletions of maternal origin could have a more severe phenotype. Further studies with larger samples focusing on these specific features could corroborate these findings.

Molecular investigation in individuals with orofacial clefts and microphthalmia-anophthalmia-coloboma spectrum.

This study describes genomic findings among individuals with both orofacial clefts (OC) and microphthalmia/anophthalmia/coloboma (MAC) recorded in the Brazilian Database on Craniofacial Anomalies (BDCA). Chromosomal microarray analysis (CMA) and Whole Exome Sequencing (WES) were performed in 17 individuals with OC-MAC. Clinical interpretation of molecular findings was based on data available at the BDCA and on re-examination. No copy number variants (CNVs) classified as likely pathogenic or pathogenic were detected by CMA. WES allowed a conclusive diagnosis in six individuals (35.29%), two of them with variants in the CHD7 gene, and the others with variants in the TFAP2A, POMT1, PTPN11, and TP63 genes with the following syndromes: CHARGE, CHD7-spectrum, Branchiooculofacial, POMT1-spectrum, LEOPARD, and ADULT. Variants of uncertain significance (VUS) possibly associated to the phenotypes were found in six other individuals. Among the individuals with VUSes, three individuals presented variants in genes associated to defects of cilia structure and/or function, including DYNC2H1, KIAA0586, WDR34, INTU, RPGRIP1L, KIF7, and LMNA. These results show that WES was the most effective molecular approach for OC-MAC in this cohort. This study also reinforces the genetic heterogeneity of OC-MAC, and the importance of genes related to ciliopathies in this phenotype.

Escuta clínica em um ambulatório de genética: uma experiência extensiva / The clinical listening in a genetic ambulatory: an extension experience / Escucha clínica em amlabolatoria de genética: uma experiencia de extensión

O trabalho busca relatar uma prática extensionista em um Hospital Universitário que teve como objetivo ampliar as ações no cuidado a pessoas com defeitos congênitos (DC) no SUS. Para tanto, apresenta-se a experiência de estudantes de psicologia em ambulatório de genética, ao associar à prática médica ambulatorial a escuta clínica. Discute-se neste artigo a importância da prática extensiva na atenção a pacientes com DC e seus familiares, decorrente da necessidade da interlocução entre medicina e psicologia na clínica contemporânea. Os resultados delimitaram os desafios enfrentados pelas estudantes e os efeitos da prática extensionista em serviço de genética clínica: estabelecimento de um espaço de fala e escuta; complexidade das condições genéticas; problemática do acompanhamento psicológico em serviço ambulatorial; e implicações na formação em Psicologia. Ressalta-se, por fim, a pertinência das reflexões teórico-clínicas acerca de uma primeira experiência de escuta clínica em sua dupla vertente: como dispositivo tanto terapêutico quanto formativo (AU).

This work seeks to report an extension practice in a University Hospital that had the objective to expand the care actions concerning people with birth defects in the Brazil's Unified Health System (SUS). Therefore, it presents the psychology student's experience in a genetic ambulatory, associating the clinical listening to the medical practice. This article also discusses the importance of the extension practice in attention to people with birth defects, through the emerging dialogue between medical practice and the clinical listening. The results set out the challenges faced by the students and the extension practice effects in a genetic service: an effective speaking and listening space; the genetical conditions complexity; the continuity of psychological support issue; and the implications in Psychology formation. Is stands out, lastly, the relevance of theoretical-clinical reflections concerning a first clinical listening experience double-sided: such as a therapeutic disposal and as a formative one (AU).

El trabajo busca reportar una práctica de extensión en un Hospital Universitario que tuvo como objetivo ampliar las acciones de atención a personas con defectos de nacimiento (EC) en el SUS. Para ello, presenta la experiencia en una consulta externa de genética, asociando la escucha clínica a la práctica médica ambulatoria. Este artículo discute la importancia de una práctica extensa en el cuidado de pacientes con EC y sus familias, debido a la necesidad de diálogo entre la medicina y la psicología en la clínica contemporánea. Los resultados delimitaron los desafíos enfrentados por los estudiantes y los efectos de la práctica de extensión en un servicio de genética clínica: establecimiento de un espacio para el habla y la escucha; complejidad de las condiciones genéticas; problemática del seguimiento psicológico en un servicio ambulatorio; e implicaciones para la formación en psicología. Finalmente, se destaca la relevancia de las reflexiones teórico-clínicas acerca de una primera experiencia de escucha clínica en su doble vertiente: como dispositivo terapéutico y formativo (AU).

Brazil's Craniofacial Project: Different approaches on orofacial clefts and 22q11.2 deletion syndrome.

This article reports the present situation of Brazilian health care in genetics for Orofacial Cleft (OFC) and 22q11.2 Deletions Syndrome (22q11.2 DS) based on research conducted by Brazil's Craniofacial Project (BCFP). Established in 2003, BCFP is a voluntary and cooperative network aiming to investigate the health care of people with these diseases and other craniofacial anomalies. The initiatives and research results are presented in four sections: (a) a comprehensive report of the Brazilian public health system in craniofacial genetics; (b) multicentric studies developed on OFC and 22q11.2 DS; (c) education strategies focused on addressing these conditions for both population and health-care professionals; and (d) the nosology through the Brazilian Database on Craniofacial Anomalies (BDCA). Since 2006, BDCA uses a standardized method with detailed clinical data collection, which allows for conducting studies on nosology, genotype-phenotype correlations, and natural history; data can also contribute to public policies. Currently, the BDCA stores data on 1,724 individuals, including 1,351 (78.36%) who were primarily admitted due to OFC and 373 (21.63%) with clinical suspicion of 22q11.2 DS. Chromosomal abnormalities/genomic imbalances were represented by 92/213 (43.19%) individuals with syndromic OFC, including 43 with 22q11.2 DS, which indicates the need for chromosomal microarray analysis in this group. The nosologic diversity reinforces that monitoring clinical is the best strategy for etiological investigation. BCFP's methodology has introduced the possibility of increasing scientific knowledge and genetic diagnosis of OFC and 22q11.2 DS to in turn improve health care and policies for this group of diseases.

Syndromic Oral Clefts: Challenges of Genetic Assessment in Brazil and Suggestions to Improve Health Policies.

Addressing the unmet health needs of persons living with congenital anomalies in low- and middle-income countries (LMIC) is a major challenge. Registries and databases are exemplary tools capable to link research data with health programs. Since 2009, Brazil's Craniofacial Project, a multicenter and voluntary research initiative, collects socioeconomic, medical, and genetic information on individuals with craniofacial anomalies through the Brazilian Database on Craniofacial Anomalies (BDCA). This article discusses challenges to the provision of genetic assessment and counselling for individuals with syndromic oral clefts (SOC) through public health services in LMIC, such as Brazil. Subjects were selected using methods of the BDCA as described elsewhere. Among 800 records, 66 assigned as SOC with no etiologic diagnosis were preselected for genomic imbalance screening. Only 28 have timely completed basic protocol using public health services, and 22 were able to perform chromosomal microarray analysis. Pathogenic genomic imbalances were identified in 4 (18.18%) and a copy number variation of uncertain clinical significance was detected in one. Results exemplify barriers faced by the majority of the population of Brazil to reach whole genetic assessment either through public genetic services or in research settings. In this unfavorable scenario, BDCA has allowed the recognition of individuals with similar needs, optimizing the scarce genetic laboratory facilities in Brazil. Ultimately, BDCA has facilitated the translation of research into care. This experience may be successfully extended to other congenital anomalies and to LMIC with similar characteristics. A set of suggestions focusing on oral clefts is provided.

O segredo na clínica da ambiguidade genital: Um estudo de caso / The secret in the clinic of genital ambiguity: A case study / El secreto en la clínica de ambigüedad genital: Un estudio de caso

O artigo apresenta o estatuto do segredo familiar como forma de enfrentamento ao diagnóstico de ambiguidade genital de uma criança. O estudo de caso, realizado a partir da escuta clínica de base psicanalítica, evidenciou a experiência destes pais frente à condição da ambiguidade genital, de forma particular e única. Destaca-se o modo como cada um tenta assimilar o real desta condição genética a partir de um segredo familiar estabelecido entre os pais e o irmão mais velho do paciente.

This article presents the statute of the family secret as a way of confronting the diagnosis of genital ambiguity in a child. The case study, conducted through a psychoanalytic clinical listening, disclosed a unique and particular parental experience in facing their child's genital ambiguity. We highlight individuals' particular attempts to assimilate the reality of this genetic condition through a family secret established between the patient's parents and older brother.

El artículo presenta el estatuto del secreto de familia como forma de enfrentar el diagnóstico de ambigüedad genital del niño. Un estudio de caso desde la escucha clínica psicoanalítica pone de relieve la experiencia de los padres frente a la condición de ambigüedad genital de manera particular y única. Se destaca la forma como cada cual intenta asimilar el real de esta condición genética a partir de un secreto de familia que se establece entre los padres y el hermano mayor del paciente.

Functional characterization of five NR5A1 gene mutations found in patients with 46,XY disorders of sex development.

Steroidogenic factor-1 (SF1), encoded by the NR5A1 gene, is a key regulator of steroidogenesis and reproductive development. NR5A1 mutations described in 46,XY patients with disorders of sex development (DSD) can be associated with a range of conditions of phenotypes; however, the genotype-phenotype correlation remains elusive in many cases. In the present study, we describe the impact of five NR5A1 variants (three novel: p.Arg39Cys, p.Ser32Asn, and p.Lys396Argfs*34; and two previously described: p.Cys65Tyr and p.Cys247*) on protein function, identified in seven patients with 46,XY DSD. In vitro functional analyses demonstrate that NR5A1 mutations impair protein functions and result in the DSD phenotype observed in our patients. Missense mutations in the DNA binding domain and the frameshift mutation p.Lys396Argfs*34 lead to both, markedly affected transactivation assays, and loss of DNA binding, whereas the mutation p.Cys247* retained partial transactivation capacity and the ability to bind a consensus SF1 responsive element. SF1 acts in a dose-dependent manner and regulates a cascade of genes involved in the sex determination and steroidogenesis, but in most cases reported so far, still lead to a sufficient adrenal steroidogenesis and function, just like in our cases, in which heterozygous mutations are associated to 46,XY DSD with intact adrenal steroid biosynthesis.

Genomic imbalances in syndromic congenital heart disease / Desequilíbrios genômicos na cardiopatia congênita sindrômica

Abstract Objective: To identify pathogenic genomic imbalances in patients presenting congenital heart disease (CHD) with extra cardiac anomalies and exclusion of 22q11.2 deletion syndrome (22q11.2 DS). Methods: 78 patients negative for the 22q11.2 deletion, previously screened by fluorescence in situ hybridization (FISH) and/or multiplex ligation probe amplification (MLPA) were tested by chromosomal microarray analysis (CMA). Results: Clinically significant copy number variations (CNVs ≥300 kb) were identified in 10% (8/78) of cases. In addition, potentially relevant CNVs were detected in two cases (993 kb duplication in 15q21.1 and 706 kb duplication in 2p22.3). Genes inside the CNV regions found in this study, such as IRX4, BMPR1A, SORBS2, ID2, ROCK2, E2F6, GATA4, SOX7, SEMAD6D, FBN1, and LTPB1 are known to participate in cardiac development and could be candidate genes for CHD. Conclusion: These data showed that patients presenting CHD with extra cardiac anomalies and exclusion of 22q11.2 DS should be investigated by CMA. The present study emphasizes the possible role of CNVs in CHD.

Resumo Objetivo: Identificar desequilíbrios genômicos patogênicos em pacientes que apresentam cardiopatias congênitas (CC) e anomalias extracardíacas e exclusão da síndrome de deleção 22q11.2 (SD22q11.2). Métodos: Foram avaliados por microarray cromossômico (CMA) 78 pacientes negativos para a deleção 22q11.2, previamente testados por hibridação in situ com fluorescência (FISH) e/ou amplificação de múltiplas sondas dependentes de ligação (MLPA). Resultados: Foram identificadas variações do número de cópias de DNA (CNVs) clinicamente significativas (≥ 300 kb) em 10% (8/78) dos casos, além de CNVs potencialmente relevantes em dois casos (duplicação de 993 kb em 15q21.1 e duplicação de 706 kb em 2p22.3). Genes envolvidos como IRX4, BMPR1A, SORBS2, ID2, ROCK2, E2F6, GATA4, SOX7, SEMAD6D, FBN1 e LTPB1 são conhecidos por atuar no desenvolvimento cardíaco e podem ser genes candidatos a CC. Conclusão: Esses dados mostram que pacientes que apresentam CC, com anomalias extracardíacas e exclusão da SD22q11.2, devem ser investigados por CMA. Ainda, este estudo enfatiza a possível função das CNVs nas CC.

Fendas orais no Sistema Único de Saúde Alagoas: definição de modelo para referência e contrarreferência em genética / Oral clefts in the Unified Health System Alagoar: defining a model for reference and counter reference in genetics

Fendas orais são malformações prevalentes, requerem cuidado multiprofissional do nascimento até a vida adulta, envolvendo promoção da saúde, prevenção de comorbidades e reabilitação clínico-cirúrgica. Em Alagoas, a atenção nesta área não está estruturada resultando em iniquidades e fragmentação do cuidado. Neste estudo foi concebido e testado um sistema de referência e contrarreferência em genética usando as fendas orais como modelo. MÉTODOS: (a) articulação com a Secretaria de Estado da Saúde para conceber o fluxo do sistema; (b) pactuação com gestores em maternidades dos municípios-alvo; (c) capacitação dos profissionais;(d) desenvolvimento de materiais informativos (formulários, manuais,cartazes etc.); (e) os dados dos pacientes foram coletados através da Cran Flow® durante as consultas médicas e analisados usando Microsof tExcel e Epi-Info™ . RESULTADOS: A partir da articulação entre os municípios-alvo e o Serviço de Genética Clínica, 50 pacientes foram referidos e contrarreferidosentre outubro/2014 e fevereiro/2016. Este número foi igual à soma de atendimentos oriundos da demanda espontânea à Genética no período 2010-2016. Em linhas gerais, as características genético-clínicas corroboraram a literatura. Chamou a atenção a baixa frequência dediagnóstico pré-natal inclusive em casos sindrômicos. Baixa escolaridade materna, recorrência familial e ingestão de álcool na gravidez foram os fatores de risco mais prevalentes. CONCLUSÕES: o sistema de referência e contrarreferência mostrou-se válido e passível de extensão a outros defeitos congênitos e estados brasileiros.Os resultados também forneceram subsídios para a construção de uma política de saúde voltada para as necessidades específicas de pessoas com fendas orais em Alagoas.

Oral clefts are prevalent malformations that demand multiprofessional carefrom birth up to adulthood. It involves health promotion, prevention ofcomorbidities and clinical and surgical rehabilitation. In Alagoas, there isno structured care in this setting resulting in iniquities and fragmentation of assistance. In this study, a reference and counter-reference system ingenetics was created and tested using oral clefts as a model. Methods: (a)articulation with State Health Secretary to conceive the system’s flow; (b)agreement between stakeholders and maternity hospitals in the targetcounties;(c) training of professionals; (d) development of informativematerials (forms, handbooks, posters etc.); (e) patients’ data were collectedthrough CranFlow® during medical appointments and analysed usingMicrosoft Excel e Epi-Info™. Results: From the articulation betweentarget-counties and the Service of Clinical Genetics, 50 patients werereferred and counter-referred between October/2014 and February/2016.That figure was equivalent to the sum of consultations from spontaneousdemand to the Genetics in the period 2010-2016. In general, clinicalgeneticcharacteristics corroborate the literature. Drew attention the lowfrequency of prenatal diagnosis including syndromic cases. Little maternaleducation, familial recurrence and alcohol consumption during pregnancywere the most prevalent risk factors. Conclusions: the reference andcounter-reference system showed up valid and capable of extension toother congenital defects and Brazilian states. The results also providedsubsidies for the construction of a health policy target to specific needs ofpeople with orofacial clefts in Alagoas.

Profile of patients with genitourinary anomalies treated in a clinical genetics service in the Brazilian unified health system / Perfil de pacientes com anormalidades geniturinárias atendidos em serviço de genética clínica no sistema único de saúde

To describe the profile of patients with genitourinary abnormalities treated at a tertiary hospital genetics service. Methods: Cross-sectional study of 1068 medical records of patients treated between April/2008 and August/2014. A total of 115 cases suggestive of genitourinary anomalies were selected, regardless of age. A standardized clinical protocol was used, as well as karyotype, hormone levels and genitourinary ultrasound for basic evaluation. Laparoscopy, gonadal biopsy and molecular studies were performed in specific cases. Patients with genitourinary malformations were classified as genitourinary anomalies (GUA), whereas the others, as Disorders of Sex Differentiation (DSD). Chi-square, Fisher and Kruskal–Wallis tests were used for statistical analysis and comparison between groups. Results: 80 subjects met the inclusion criteria, 91% with DSD and 9% with isolated/syndromic GUA. The age was younger in the GUA group (p<0.02), but these groups did not differ regarding external and internal genitalia, as well as karyotype. Karyotype 46,XY was verified in 55% and chromosomal aberrations in 17.5% of cases. Ambiguous genitalia occurred in 45%, predominantly in 46,XX patients (p<0.006). Disorders of Gonadal Differentiation accounted for 25% and congenital adrenal hyperplasia, for 17.5% of the sample. Consanguinity occurred in 16%, recurrence in 12%, lack of birth certificate in 20% and interrupted follow-up in 31% of cases. Conclusions: Patients with DSD predominated. Ambiguous genitalia and abnormal sexual differentiation were more frequent among infants and prepubertal individuals. Congenital adrenal hyperplasia was the most prevalent nosology. Younger patients were more common in the GUA group. Abandonment and lower frequency of birth certificate occurred in patients with ambiguous or malformed genitalia. These characteristics corroborate the literature and show the biopsychosocial impact of genitourinary anomalies.

Descrever o perfil de pacientes com anormalidades geniturinárias atendidos em serviço de genética de hospital terciário. Métodos: Estudo transversal de 1.068 prontuários de pacientes atendidos entre abril/2008 e agosto/2014. Foram selecionados 115 casos sugestivos de anomalias geniturinárias, independentemente da idade. Usaram-se protocolo clínico padronizado, cariótipo, hormônios e ultrassonografia geniturinária para avaliação básica. Laparoscopia, biopsia gonadal e estudos moleculares foram feitos em casos específicos. Pacientes com malformações geniturinárias foram classificados como defeitos geniturinários (DGU), os demais, como distúrbios da diferenciação do sexo (DDS). Usaram-se qui-quadrado, Fisher e Kruskal-Wallis para análise estatística e comparação entre os grupos. Resultados: Preencheram os critérios de inclusão 80 sujeitos, 91% com DDS e 9% com DGU isolados/sindrômicos. A idade foi menor no grupo DGU (p<0,02), mas esses grupos não diferiram quanto a genitália externa, interna e cariótipo. Verificou-se cariótipo 46,XY em 55% e aberrações cromossômicas em 17,5% dos casos. Ambiguidade genital ocorreu em 45%, predominou em pacientes 46,XX (p<0,006). Distúrbios da diferenciação gonadal representaram 25% e hiperplasia adrenal congênita; 17,5% da amostra. Consanguinidade ocorreu em 16%, recorrência em 12%, ausência de registro civil em 20% e interrupção do seguimento em 31% dos casos. Conclusões: Predominaram pacientes com DDS. Ambiguidade genital e diferenciação sexual anômala foram mais frequentes entre recém-nascidos e pré-púberes. Hiperplasia adrenal congênita foi a nosologia mais prevalente. Pacientes mais jovens pertenciam ao grupo DGU. Menor frequência de registro civil e abandono ocorreram em pacientes com genitália ambígua ou malformada. Essas características corroboram a literatura e evidenciam o impacto biopsicossocial das anormalidades geniturinárias.

[Profile of patients with genitourinary anomalies treated in a clinical genetics service in the Brazilian unified health system]. / Perfil de pacientes com anormalidades geniturinárias atendidos em serviço de genética clínica no sistema único de saúde.

OBJECTIVE: To describe the profile of patients with genitourinary abnormalities treated at a tertiary hospital genetics service. METHODS: Cross-sectional study of 1,068 medical records of patients treated between April/2008 and August/2014. A total of 115 cases suggestive of genitourinary anomalies were selected, regardless of age. A standardized clinical protocol was used, as well as karyotype, hormone levels and genitourinary ultrasound for basic evaluation. Laparoscopy, gonadal biopsy and molecular studies were performed in specific cases. Patients with genitourinary malformations were classified as genitourinary anomalies (GUA), whereas the others, as sex differentiation disorders (SDD). Chi-square, Fisher and Kruskal-Wallis tests were used for statistical analysis and comparison between groups. RESULTS: 80 subjects met the inclusion criteria, 91% with SDD and 9% with isolated/ syndromic GUA. The age was younger in the GUA group (p<0.02), but these groups did not differ regarding external and internal genitalia, as well as karyotype. Karyotype 46,XY was verified in 55% and chromosomal aberrations in 17.5% of cases. Ambiguous genitalia occurred in 45%, predominantly in 46,XX patients (p<0.006). Gonadal differentiation disorders accounted for 25% and congenital adrenal hyperplasia, for 17.5% of the sample. Consanguinity occurred in 16%, recurrence in 12%, lack of birth certificate in 20% and interrupted follow-up in 31% of cases. CONCLUSIONS: Patients with SDD predominated. Ambiguous genitalia and abnormal sexual differentiation were more frequent among infants and prepubertal individuals. Congenital adrenal hyperplasia was the most prevalent nosology. Younger patients were more common in the GUA group. Abandonment and lower frequency of birth certificate occurred in patients with ambiguous or malformed genitalia. These characteristics corroborate the literature and show the biopsychosocial impact of genitourinary anomalies.

A multicentric association study between 39 genes and nonsyndromic cleft lip and palate in a Brazilian population.

PURPOSE: The aim of this study was to use the TaqMan OpenArray system to evaluate associations between 39 genes and the etiology of nonsyndromic cleft lip and palate (NSCLP) in a Brazilian population. MATERIAL AND METHODS: This case-control association study was designed with 80.11% statistical power according to logistic regression (GPOWER software). The case group had 182 patients with NSCLP enrolled in the Brazilian Database on Orofacial Clefts. The controls included 355 healthy individuals with no history of oral clefting in the past three generations. All samples were genotyped for 253 tag single nucleotide polymorphisms (tagSNPs) in 39 genes, including two that had recently been associated with this process. The association analysis was performed using logistic regression and stepwise regression. The results were corrected for multiple testing [Bonferroni correction and False Discovery Rate (FDR)]. RESULTS: Twenty-four SNPs in 16 genes were significantly associated with the etiology of NSCLP, including MSX1, SPRY1, MSX2, PRSS35, TFAP2A, SHH, VAX1, TBX10, WNT11, PAX9, BMP4, JAG2, AXIN2, DVL2, KIF7, and TCBE3. Stepwise regression analysis revealed that 11 genes contributed to 15.5% of the etiology of NSCLP in the sample. CONCLUSION: This is the first study to associate KIF7 and TCEB3 with the etiology of NSCLP. New technological approaches using the same design should help to identify further etiological susceptibility variants.

Investigation of genetic factors underlying typical orofacial clefts: mutational screening and copy number variation.

Typical orofacial clefts (OFCs) comprise cleft lip, cleft palate and cleft lip and palate. The complex etiology has been postulated to involve chromosome rearrangements, gene mutations and environmental factors. A group of genes including IRF6, FOXE1, GLI2, MSX2, SKI, SATB2, MSX1 and FGF has been implicated in the etiology of OFCs. Recently, the role of the copy number variations (CNVs) has been studied in genetic defects and diseases. CNVs act by modifying gene expression, disrupting gene sequence or altering gene dosage. The aims of this study were to screen the above-mentioned genes and to investigate CNVs in patients with OFCs. The sample was composed of 23 unrelated individuals who were grouped according to phenotype (associated with other anomalies or isolated) and familial recurrence. New sequence variants in GLI2, MSX1 and FGF8 were detected in patients, but not in their parents, as well as in 200 control chromosomes, indicating that these were rare variants. CNV screening identified new genes that can influence OFC pathogenesis, particularly highlighting TCEB3 and KIF7, that could be further analyzed. The findings of the present study suggest that the mechanism underlying CNV associated with sequence variants may play a role in the etiology of OFC.

Risk factors and the prevention of oral clefts.

This article presents general aspects of risk factors and particularities of the management of individuals with oral clefts (OCs). A practical manual of prevention and management of this congenital defect was prepared based on a review of the literature and using data from Brazilian multicenter studies. Since OCs require efforts from all levels of healthcare, the data herein presented permits appropriate follow-up for affected individuals and their families. Also, the recognition of risk factors is crucial for planning and implementing preventive measures at the individual and population levels.

Risk factors and the prevention of oral clefts

This article presents general aspects of risk factors and particularities of the management of individuals with oral clefts (OCs). A practical manual of prevention and management of this congenital defect was prepared based on a review of the literature and using data from Brazilian multicenter studies. Since OCs require efforts from all levels of healthcare, the data herein presented permits appropriate follow-up for affected individuals and their families. Also, the recognition of risk factors is crucial for planning and implementing preventive measures at the individual and population levels.

Family care practitioners experience with individuals with orofacial clefts in Brazil / Experiência de profissionais de saúde da família com pessoas com fendas orofaciais no Brasil

INTRODUCTION: Orofacial clefts are among the most prevalent birth defects worldwide. Specialized treatment and surveillance of basic health needs are critical. Few studies have investigated primary care practitioners' experience in caring for individuals with clefts. OBJECTIVE: It was to describe experience and current interest of family care practitioners on the management of individuals with clefts. METHODS: Observational cohort of 104 practitioners from Maceió (AL) e Campinas (SP). Demographic, academic and professional characteristics, didactic experience and desire in continuing education on clefts were assessed using a questionnaire RESULTS:Seventy-four practitioners were located in Maceió and 30 in Campinas. Female gender and low academic qualification were predominant. Physicians and nurses prevailed over dentists, 78 (75%) participants had clinical experience with clefts. Use of protocols was mentioned by 3/104 (2.9%), provision of information on clefts by 58/104 (56%) and referrals to the Brazilian Reference Network by 7/104 (6.7%). Almost 50% reported didactic experience and 94%, desire on continuing education in this field CONCLUSION: Results corroborate the literature and reinforce the need of improving family care practitioners' skills to manage individuals with clefts. Education and strengthen ties between primary level of the health system and specialized teams must be focused. Some strategies are presented in this regard.

INTRODUÇÃO: As fendas orofaciais estão entre os mais prevalentes defeitos congênitos em todo o mundo. Atenção especializada e vigilância de necessidades básicas de saúde são críticas no cuidado aos indivíduos. OBJETIVO: Foi descrever a experiência e o interesse de profissionais da Estratégia Saúde da Família no acompanhamento de indivíduos com fendas orofaciais. MÉTODOS: Coorte observacional com 104 profissionais de Maceió (AL) e Campinas (SP). Características demográficas, acadêmicas e profissionais, bem como a experiência didática e o desejo por educação continuada, foram colhidas por meio de questionário. RESULTADOS: Setenta e quatro profissionais atuavam em Maceió e 30 em Campinas. O gênero feminino e a baixa qualificação acadêmica foram predominantes. Médicos e enfermeiros prevaleceram sobre dentistas, e 78 (75%) participantes tinham experiência clínica com fendas. O uso de protocolos foi mencionado por 3/104 (2,9%), a oferta de informações sobre fendas por 58/104 (56%) e o encaminhamento para unidades especializadas da Rede de Referência por 7/104 (6,7%). Cerca de 50% dos participantes referiram experiência didática e 94%, desejo por educação continuada CONCLUSÃO: Os resultados corroboram a literatura e reforçam a necessidade de melhorar a capacitação de profissionais nesta área. Para tanto, são apresentadas estratégias para promover educação e reforçar laços entre a atenção básica e equipes especializadas.

Implementing the brazilian database on orofacial clefts.

Background. High-quality clinical and genetic descriptions are crucial to improve knowledge of orofacial clefts and support specific healthcare polices. The objective of this study is to discuss the potential and perspectives of the Brazilian Database on Orofacial Clefts. Methods. From 2008 to 2010, clinical and familial information on 370 subjects was collected by geneticists in eight different services. Data was centrally processed using an international system for case classification and coding. Results. Cleft lip with cleft palate amounted to 198 (53.5%), cleft palate to 99 (26.8%), and cleft lip to 73 (19.7%) cases. Parental consanguinity was present in 5.7% and familial history of cleft was present in 26.3% subjects. Rate of associated major plus minor defects was 48% and syndromic cases amounted to 25% of the samples. Conclusions. Overall results corroborate the literature. Adopted tools are user friendly and could be incorporated into routine patient care. The BDOC exemplifies a network for clinical and genetic research. The data may be useful to develop and improve personalized treatment, family planning, and healthcare policies. This experience should be of interest for geneticists, laboratory-based researchers, and clinicians entrusted with OC worldwide.

Local strategies to address health needs of individuals with orofacial clefts in alagoas, Brazil.

Objective : To describe demographic and clinical-genetic characteristics of patients from a poor area of Brazil and to share experience on how the local genetic unit has addressed their major health needs. Design : Descriptive cohort. Setting : A clinical-genetic unit, a cytogenetics unit, and a regional cleft team located in the northeast and southeast of Brazil. Participants : A total of 133 individuals with orofacial clefts who attended the surgical call of a nongovernmental organization. From this group, 125, 77, and 13 patients completed phases 1, 2, and 3, respectively. Methods : Phase 1 comprised a description of demographic characteristics recorded through interviews. Phase 2 included a clinical-genetic evaluation using a pretested form, as well as cytogenetic analyses of selected patients. Phase 3 comprised collaborative action to address major health needs of patients without primary surgery. The Fisher test was used for statistics with p value < .05. Results : A majority of patients were rural residents with isolated cleft lip with cleft palate. Ages ranged between 0 and 30 years. Fifty percent had never undergone surgery; whereas, 100% had never attended a genetic evaluation. Isolated cleft was diagnosed in 77.9%, syndromes in 14.3%, and multiple congenital abnormalities in 7.8%. Positive familial history of clefts occurred in 28%; whereas, parental consanguinity was present in 7.8% cases. A total of 23 individuals without cleft surgery were registered for multidisciplinary treatment. Conclusions : Findings revealed high levels of unmet medical needs and provided an evidence base for health care planning. Collaborative action was crucial and might be applied to other regions in Brazil.

Preliminary Analysis of the Nonsynonymous Polymorphism rs17563 in BMP4 Gene in Brazilian Population Suggests Protection for Nonsyndromic Cleft Lip and Palate.

Cleft lip with or without palate (CL±P) is common congenital anomalies in humans. Experimental evidence has demonstrated that bone morphogenetic protein 4 gene (Bmp4) is involved in the etiology of CL±P in animal models. The nonsynonymous polymorphism rs17563 T>C (p.V152A) in the BMP4 gene has been associated to the risk of nonsyndromic CL±P in Chinese population and microforms from different ethnic backgrounds. The aim of this study was to investigate the role of BMP4 gene in CL±P in Brazilian sample using genetic association approach. Our sample was composed by 123 patients with nonsyndromic CL±P and 246 controls, in which absence of CL±P was confirmed in 3 generations. The rs17563 polymorphism was genotyped by PCR-RFLP technique. Logistic regression was performed to evaluate allele and genotype association. Our data showed statistical power to detect association (86.83%) in this sample. Logistic regression results showed significant association between C allele and CL±P (P = 0.00018, OR = 0.40, and 95% CI = 0.25-0.65), as well as CC genotype and CL±P (P = 0.00018, OR = 0.35, and 95% CI = 0.19-0.66). So, there is a strong association between nonsyndromic CL±P and BMP4 rs17563 polymorphism in our sample and the C allele had a protective effect against the occurrence of nonsyndromic CL±P.