© 1994 Oxford University Press
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A proposed new contiguous gene syndrome on 8q consists of Branchio-Oto-Renal (BOR) syndrome, Duane syndrome, a dominant form of hydrocephalus and trapeze aplasia; implications for the mapping of the BOR gene
Unité de Génétique Moléculaire Humaine (CNRS URA 1445), Institut Pasteur 25 rue du Dr Roux, 75724 Paris Cédex 15 1Centre de Génétique, Hopital d'Enfants 10 Boulevard Maréchal-de-Lattre-de-Tassigny, 21034 Dijon Cédex 2Laboratoire de Cytogénétique, Hopital Saint Antoine 329 Boulevard Victor Hugo, 59019 Lille Cédex 3Service de Pédiatrie et Génétique Médicale, Groupe Hospitalier Pellegrin-Enfants Place Amélie Raba-Léon, 33076 Bordeaux Cédex 4Service de Néonatalogie-Génétique, Maternité Régionale de Nancy 10 rue du Dr Heydenreich, 54042 Nancy Cédex 5Service d'Oto-Rhino-Laryngologie, Hopital Jean Minjoz 25030 Besançon Cédex 6Département de Pédiatrie Médicale, Hopital Necker 149 rue de Sérvres, 75743 Paris Cédex 15, France 7Department of Cytogenetics and Molecular Genetics, Adelaice Children's Hospital 72 King William Road, North Adelaide, SA 5006, Australia 8Department of Medical Genetics, Adelaice Children's Hospital 72 King William Road, North Adelaide, SA 5006, Australia 9Généthon, 1 rue de I'Internationale 91000 Evry 10Centre d'Etude du Polymorphisme Humain 27 rue Juliette Dodu, 75010 Paris, France
*To whom correspondence should be addressed
Received June 22, 1994; Revised August 11, 1994; Accepted August 11, 1994
The analysis of a de novo 8q12.2q21.2 deletion led to the identification of a proposed previously undescribed contiguous gene syndrome consisting of Branchio-Oto-Renal (BOR) syndrome, Duane syndrome, hydrocephalus and trapeze aplasia. This is the first reported localization of the genes responsible for Duane syndrome and this dominant form of hydrocephalus. In contrast, we report a new localization for the gene responsible for BOR syndrome which is more telomeric to an initial placement. Linkage analysis of affected families consistently mapped the gene responsible for BOR and Branchio-Oto (BO) syndromes to within the deletion. Using new algorithms, a YAC contig was constructed and used to localize the breakpoint of another chromosomal rearrangement associated with BO syndrome to a 500 kb interval within the deletion. The 8q12.2q21.2 deletion suggests that reduced dosage of the relevant genes is sufficient to cause Duane syndrome, BOR syndrome and this dominant form of hydrocephalus.
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