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1994•American Journal of Medical GeneticsRequires access

Male with typical fragile X phenotype is deleted for part of the FMR1 gene and for about 100 kb of upstream region

Yvon Trottier, Georges Imbert, Annemarie Poustka, Jean‐Pierre Fryns, Jean‐Louis Mandel

Open publisher page 57 citations

Abstract

We report on a patient with moderate mental retardation and a typical fragile X phenotype, with no family history and no fragile X site on cytogenetic analysis. The patient was found to have a deletion encompassing part of the FMR1 gene and a 70-100 kb region upstream of the FMR1 promotor region. This deletion is smaller than those previously reported and confirms that FMR1 is the major and probably the only gene implicated in the phenotype of the fragile X syndrome.

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What this paper is about

We report on a patient with moderate mental retardation and a typical fragile X phenotype, with no family history and no fragile X site on cytogenetic analysis. The patient was found to have a deletion encompassing part of the FMR1 gene and a 70-100 kb region upstream of the FMR1 promotor region. This deletion is smaller than those previously reported and confirms that FMR1 is the major and probably the only gene implicated in the phenotype of the fragile X syndrome.

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Available abstract

We report on a patient with moderate mental retardation and a typical fragile X phenotype, with no family history and no fragile X site on cytogenetic analysis. The patient was found to have a deletion encompassing part of the FMR1 gene and a 70-100 kb region upstream of the FMR1 promotor region. This deletion is smaller than those previously reported and confirms that FMR1 is the major and probably the only gene implicated in the phenotype of the fragile X syndrome.

Key concepts: FMR1, Phenotype, Fragile X syndrome, Upstream (networking), Genetics, Fragile x, Biology, Gene

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