BRUNA LUCHEZE FREIRE
Projetos de Pesquisa
Unidades Organizacionais
LIM/42 - Laboratório de Hormônios e Genética Molecular, Hospital das Clínicas, Faculdade de Medicina
8 resultados
Resultados de Busca
Agora exibindo 1 - 8 de 8
- Genetic Disorders in Prenatal Onset Syndromic Short Stature Identified by Exome Sequencing(2019) HOMMA, Thais Kataoka; FREIRE, Bruna Lucheze; KAWAHIRA, Rachel Sayuri Honjo; DAUBER, Andrew; FUNARI, Mariana Ferreira de Assis; LERARIO, Antonio Marcondes; NISHI, Mirian Yumie; ALBUQUERQUE, Edoarda Vasco de; VASQUES, Gabriela de Andrade; COLLETT-SOLBERG, Paulo Ferrez; SUGAYAMA, Sofia Mizuho Miura; BERTOLA, Debora Romeo; KIM, Chong Ae; ARNHOLD, Ivo Jorge Prado; MALAQUIAS, Alexsandra Christianne; JORGE, Alexander Augusto de LimaObjective To perform a prospective genetic investigation using whole exome sequencing of a group of patients with syndromic short stature born small for gestational age of unknown cause. Study design For whole exome sequencing analysis, we selected 44 children born small for gestational age with persistent short stature, and additional features, such as dysmorphic face, major malformation, developmental delay, and/or intellectual disability. Seven patients had negative candidate gene testing based on clinical suspicion and 37 patients had syndromic conditions of unknown etiology. Results Of the 44 patients, 15 (34%) had pathogenic/likely pathogenic variants in genes already associated with growth disturbance: COL2A1 (n = 2), SRCAP (n = 2), AFF4, ACTG1, ANKRD11, BCL11B, BRCA1, CDKN1C, GINS1, INPP5K, KIF11, KMT2A, and POC1A (n = 1 each). Most of the genes found to be deleterious participate in fundamental cellular processes, such as cell replication and DNA repair. Conclusions The rarity and heterogeneity of syndromic short stature make the clinical diagnosis difficult. Whole exome sequencing allows the diagnosis of previously undiagnosed patients with syndromic short stature.
- Growth and Clinical Characteristics of Children with Floating-Harbor Syndrome: Analysis of Current Original Data and a Review of the Literature(2020) HOMMA, Thais K.; FREIRE, Bruna L.; HONJO, Rachel; DAUBER, Andrew; FUNARI, Mariana F. A.; LERARIO, Antonio M.; ALBUQUERQUE, Edoarda V. A.; VASQUES, Gabriela A.; BERTOLA, Debora R.; KIM, Chong A.; MALAQUIAS, Alexsandra C.; JORGE, Alexander A. L.Background: Floating-Harbor syndrome (FHS) is a rare condition characterized by dysmorphic facial features, short stature, and expressive language delay. Objective: The aim of this study was to describe a cohort of patients with FHS and review the literature about the response to recombinant human growth hormone (rhGH) therapy. Methods: Anthropometric and laboratory data from 7 patients with FHS were described. The molecular diagnosis was established by multigene analysis. Moreover, we reviewed the literature concerning patients with FHS treated with rhGH. Results: All 7 patients were born small for gestational age. At first evaluation, 6 patients had a height standard deviation score (SDS) <=-2 and 1 had short stature in relation to their target height. Bone age was usually delayed, which rapidly advanced during puberty. Nonspecific skeletal abnormalities were frequently noticed, and normal to elevated plasma IGF-I levels were observed in all except 1 patient with growth hormone deficiency. Information about 20 patients with FHS treated with rhGH was analyzed (4 from our cohort and 16 from the literature). The median height changes during the treatment period (approx. 2.9 years) were 1.1 SDS (range from -0.4 to 3.1). Nontreated patients had an adult height SDS of -4.1 +/- 1.2 (n = 10) versus -2.6 +/- 0.8 SDS (n = 7, p 0.012) for treated patients. Conclusion: We observed a laboratory profile compatible with IGF-1 insensitivity in some patients with FHS. Nevertheless, our study suggests that children with FHS may be considered as candidates for rhGH therapy. Further studies are necessary to establish the real benefit and safety of rhGH therapy in these patients.
conferenceObject Genetic Investigation of Children with Syndromic Prenatal Onset Short Stature(2018) HOMMA, Thais; FREIRE, Bruna; RONJO, Rachel; DAUBER, Andrew; FUNARI, Mariana; LERARIO, Antonio; ARNHOLD, Ivo; CANTON, Ana; SUGAYAMA, Sofia; BERTOLA, Debora; KIM, Chong; MALAQUIAS, Alexsandra; JORGE, AlexanderconferenceObject SCUBE3 loss-of-function causes a recognizable developmental disorder due to defective bone morphogenetic protein (BMP) signaling(2022) NICETA, Marcello; LIN, Yuh-Charn; MUTO, Valentina; VONA, Barbara; PAGNAMENTA, Alistair T.; MAROOFIAN, Reza; BEETZ, Christian; DUYVENVOORDE, Hermine Van; DENTICI, Maria Lisa; LAUFFER, Peter; VALLIAN, Sadeq; CIOLFI, Andrea; PIZZI, Simone; BAUER, Peter; GRUNING, Nana-Maria; BELLACCHIO, Emanuele; FATTORE, Andrea Del; PETRINI, Stefania; SHAHEEN, Ranad; TIOSANO, Dov; HALLOUN, Rana; PODE-SHAKKED, Ben; ALBAYRAK, Hatice Mutlu; ISIK, Emregul; WIT, Jan M.; DITTRICH, Marcus; FREIRE, Bruna L.; BERTOLA, Debora R.; JORGE, Alexander A. L.; BAREL, Ortal; SABIR, Ataf H.; TENEIJI, Amal M. Al; TAJI, Sulaima M.; AL-SANNAA, Nouriya; AL-ABDULWAHED, Hind; DIGILIO, Maria Cristina; IRVING, Melita; ANIKSTER, Yair; BHAVANI, Gandham S. L.; GIRISHA, Katta M.; HAAF, Thomas; TAYLOR, Jenny C.; DALLAPICCOLA, Bruno; ALKURAYA, Fowzan S.; YANG, Ruey-Bing; TARTAGLIA, MarcoconferenceObject GENOMIC APPROACHES TO INVESTIGATE CHILDREN BORN SMALL FOR GESTATIONAL AGE (SGA) WITHOUT CATCH UP-GROWTH(2017) HOMMA, Thais K.; FREIRE, Bruna; FUNARI, Mariana; MALAQUIAS, Alexsandra; RONJO, Rachel; VASQUES, Gabriela; CANTON, Ana; KIM, Chong; BERTOLA, Debora; JORGE, Alexander- SCUBE3 loss-of-function causes a recognizable recessive developmental disorder due to defective bone morphogenetic protein signaling(2021) LIN, Yuh-Charn; NICETA, Marcello; MUTO, Valentina; VONA, Barbara; PAGNAMENTA, Alistair T.; MAROOFIAN, Reza; BEETZ, Christian; DUYVENVOORDE, Hermine van; DENTICI, Maria Lisa; LAUFFER, Peter; VALLIAN, Sadeq; CIOLFI, Andrea; PIZZI, Simone; BAUER, Peter; GRUENING, Nana-Maria; BELLACCHIO, Emanuele; FATTORE, Andrea Del; PETRINI, Stefania; SHAHEEN, Ranad; TIOSANO, Dov; HALLOUN, Rana; Ben Pode-Shakked; ALBAYRAK, Hatice Mutlu; ISIK, Emreguel; WIT, Jan M.; DITTRICH, Marcus; FREIRE, Bruna L.; BERTOLA, Debora R.; JORGE, Alexander A. L.; BAREL, Ortal; SABIR, Ataf H.; TENAIJI, Amal M. J. Al; TAJI, Sulaima M.; AL-SANNAA, Nouriya; AL-ABDULWAHED, Hind; DIGILIO, Maria Cristina; IRVING, Melita; ANIKSTER, Yair; BHAVANI, Gandham S. L.; GIRISHA, Katta M.; HAAF, Thomas; TAYLOR, Jenny C.; DALLAPICCOLA, Bruno; ALKURAYA, Fowzan S.; YANG, Ruey-Bing; TARTAGLIA, MarcoSignal peptide-CUB-EGF domain-containing protein 3 (SCUBE3) is a member of a small family of multifunctional cell surface-anchored glycoproteins functioning as co-receptors for a variety of growth factors. Here we report that bi-allelic inactivating variants in SCUBE3 have pleiotropic consequences on development and cause a previously unrecognized syndromic disorder. Eighteen affected individuals from nine unrelated families showed a consistent phenotype characterized by reduced growth, skeletal features, distinctive craniofacial appearance, and dental anomalies. In vitro functional validation studies demonstrated a variable impact of disease-causing variants on transcript processing, protein secretion and function, and their dysregulating effect on bone morphogenetic protein (BMP) signaling. We show that SCUBE3 acts as a BMP2/BMP4 co-receptor, recruits the BMP receptor complexes into raft microdomains, and positively modulates signaling possibly by augmenting the specific interactions between BMPs and BMP type I receptors. Scube3(-/-) mice showed craniofacial and dental defects, reduced body size, and defective endochondral bone growth due to impaired BMP-mediated chondrogenesis and osteogenesis, recapitulating the human disorder. Our findings identify a human disease caused by defective function of a member of the SCUBE family, and link SCUBE3 to processes controlling growth, morphogenesis, and bone and teeth development through modulation of BMP signaling.
- Burden of Rare Copy Number Variants in Microcephaly: A Brazilian Cohort of 185 Microcephalic Patients and Review of the Literature(2024) TOLEZANO, Giovanna Cantini; BASTOS, Giovanna Civitate; COSTA, Silvia Souza da; FREIRE, Bruna Lucheze; HOMMA, Thais Kataoka; HONJO, Rachel Sayuri; YAMAMOTO, Guilherme Lopes; PASSOS-BUENO, Maria Rita; KOIFFMANN, Celia Priszkulnik; KIM, Chong Ae; VIANNA-MORGANTE, Angela Maria; JORGE, Alexander Augusto de Lima; BERTOLA, Debora Romeo; ROSENBERG, Carla; KREPISCHI, Ana Cristina VictorinoMicrocephaly presents heterogeneous genetic etiology linked to several neurodevelopmental disorders (NDD). Copy number variants (CNVs) are a causal mechanism of microcephaly whose investigation is a crucial step for unraveling its molecular basis. Our purpose was to investigate the burden of rare CNVs in microcephalic individuals and to review genes and CNV syndromes associated with microcephaly. We performed chromosomal microarray analysis (CMA) in 185 Brazilian patients with microcephaly and evaluated microcephalic patients carrying < 200 kb CNVs documented in the DECIPHER database. Additionally, we reviewed known genes and CNV syndromes causally linked to microcephaly through the PubMed, OMIM, DECIPHER, and ClinGen databases. Rare clinically relevant CNVs were detected in 39 out of the 185 Brazilian patients investigated by CMA (21%). In 31 among the 60 DECIPHER patients carrying < 200 kb CNVs, at least one known microcephaly gene was observed. Overall, four gene sets implicated in microcephaly were disclosed: known microcephaly genes; genes with supporting evidence of association with microcephaly; known macrocephaly genes; and novel candidates, including OTUD7A, BBC3, CNTN6, and NAA15. In the review, we compiled 957 known microcephaly genes and 58 genomic CNV loci, comprising 13 duplications and 50 deletions, which have already been associated with clinical findings including microcephaly. We reviewed genes and CNV syndromes previously associated with microcephaly, reinforced the high CMA diagnostic yield for this condition, pinpointed novel candidate loci linked to microcephaly deserving further evaluation, and provided a useful resource for future research on the field of neurodevelopment.
- Recurrent Copy Number Variants Associated with Syndromic Short Stature of Unknown Cause(2018) HOMMA, Thais K.; KREPISCHI, Ana C. V.; FURUYA, Tatiane K.; HONJO, Rachel S.; MALAQUIAS, Alexsandra C.; BERTOLA, Debora R.; COSTA, Silvia S.; CANTON, Ana P.; ROELA, Rosimeire A.; FREIRE, Bruna L.; KIM, Chong A.; ROSENBERG, Carla; JORGE, Alexander A. L.Background/Aims: Genetic imbalances are responsible for many cases of short stature of unknown etiology. This study aims to identify recurrent pathogenic copy number variants (CNVs) in patients with syndromic short stature of unknown cause. Methods: We selected 229 children with short stature and dysmorphic features, developmental delay, and/or intellectual disability, but without a recognized syndrome. All patients were evaluated by chromosomal microarray (array-based comparative genomic hybridization/single nucleotide polymorphism array). Additionally, we searched databases and previous studies to recover recurrent pathogenic CNVs associated with short stature. Results: We identified 32 pathogenic/probably pathogenic CNVs in 229 patients. By reviewing the literature, we selected 4 previous studies which evaluated CNVs in cohorts of patients with short stature. Taken together, there were 671 patients with short stature of unknown cause evaluated by chromosomal microarray. Pathogenic/probably pathogenic CNVs were identified in 87 patients (13%). Seven recurrent CNVs, 22q11.21, 15q26, 1p36.33, Xp22.33, 17p13.3, 1q21.1, 2q24.2, were observed. They are responsible for about 40% of all pathogenic/probably pathogenic genomic imbalances found in short stature patients of unknown cause. Conclusion: CNVs seem to play a significant role in patients with short stature. Chromosomal microarray should be used as a diagnostic tool for evaluation of growth disorders, especially for syndromic short stature of unknown cause. (C) 2017 S. Karger AG, Basel