title: Clinical and cytogenetic features of a Brazilian sample of patients with phenotype of oculo-auriculo-vertebral spectrum: a cross-sectional study.
abstract: OBJECTIVE
  Oculo-auriculo-vertebral spectrum (OAVS) is considered to be a defect of embryogenesis involving structures originating from the first branchial arches. Our objective was to describe the clinical and cytogenetic findings from a sample of patients with the phenotype of OAVS.
  
  
  METHODS
  Cross-sectional study in a referral hospital in southern Brazil.
  
  
  METHODS
  The sample consisted of 23 patients who presented clinical findings in at least two of these four areas: orocraniofacial, ocular, auricular and vertebral. The patients underwent a clinical protocol and cytogenetic evaluation through high-resolution karyotyping, fluorescence in situ hybridization for 5p and 22q11 microdeletions and investigation of chromosomal instability for Fanconi anemia.
  
  
  RESULTS
  Cytogenetic abnormalities were observed in three cases (13%) and consisted of: 47,XX,+mar; mos 47,XX,+mar/46,XX; and 46,XX,t(6;10)(q13; q24). We observed cases of OAVS with histories of gestational exposition to fluoxetine, retinoic acid and crack. One of our patients was a discordant monozygotic twin who had shown asymmetrical growth restriction during pregnancy. Our patients with OAVS were characterized by a broad clinical spectrum and some presented atypical findings such as lower-limb reduction defect and a tumor in the right arm, suggestive of hemangioma/lymphangioma.
  
  
  CONCLUSIONS
  We found a wide range of clinical characteristics among the patients with OAVS. Different chromosomal abnormalities and gestational expositions were also observed. Thus, our findings highlight the heterogeneity of the etiology of OAVS and the importance of these factors in the clinical and cytogenetic evaluation of these patients.
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Alessandra Pawelec da
authors.initials: AP
authors.lastname: Silva
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Rafael Fabiano Machado
authors.initials: RF
authors.lastname: Rosa
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Trevisan
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Juliana Cavalheiro
authors.initials: JC
authors.lastname: Dorneles
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Camila Saporiti
authors.initials: CS
authors.lastname: Mesquita
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Vinicius Freitas de
authors.initials: VF
authors.lastname: Mattos
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Giorgio Adriano
authors.initials: GA
authors.lastname: Paskulin
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Paulo Ricardo Gazzola
authors.initials: PR
authors.lastname: Zen
mesh_terms: D000014:Abnormalities, Drug-Induced; D000293:Adolescent; D000328:Adult; D001938:Brazil; D057070:Cervical Rib / Q000002:abnormalities / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D002872:Chromosome Deletion; D003430:Cross-Sectional Studies; D005260:Female; D006053:Goldenhar Syndrome / Q000235:genetics*; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007223:Infant; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D008334:Mandible / Q000002:abnormalities / Q000000981:diagnostic imaging; D010641:Phenotype; D011247:Pregnancy; D011248:Pregnancy Complications; D011859:Radiography; D013723:Teratogens; D016216:Ultrasonography, Prenatal; D055815:Young Adult
chemical_list: D013723:Teratogens