title: Endocrine abnormalities in patients with Jacobsen (11q-) syndrome.
abstract: Jacobsen syndrome (JS), a rare disorder with multiple dysmorphic features, is caused by the terminal deletion of chromosome 11q. Short stature has been reported in this syndrome, however very few of these patients have undergone endocrine evaluation. Serum insulin-like growth factor-1 (IGF-1) levels are an indirect indicator of growth hormone activity and are a useful initial screening tool in the assessment of an individual's growth hormone axis. We studied nine children with JS, eight of whom had short stature. Four out of eight children with short stature (50%) had low IGF-1 values, with three low for age and one low for Tanner stage. Four out of six males (67%) had cryptorchidism, a potential sign of hypogonadism. We conclude that low IGF-1 is common in patients with JS and short stature, and that growth hormone status and possibly hypothalamic-pituitary function should be evaluated in this patient population.
authors.affiliation: University of California San Diego, La Jolla, California, USA.
authors.forename: Marjan
authors.initials: M
authors.lastname: Haghi
authors.forename: Asheesh
authors.initials: A
authors.lastname: Dewan
authors.forename: Kenneth Lee
authors.initials: KL
authors.lastname: Jones
authors.forename: Richard
authors.initials: R
authors.lastname: Reitz
authors.forename: Christopher
authors.initials: C
authors.lastname: Jones
authors.forename: Paul
authors.initials: P
authors.lastname: Grossfeld
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002872:Chromosome Deletion; D025063:Chromosome Disorders / Q000097:blood / Q000235:genetics*; D002880:Chromosomes, Human, Pair 11 / Q000235:genetics*; D003456:Cryptorchidism / Q000097:blood / Q000235:genetics; D005260:Female; D006130:Growth Disorders / Q000097:blood / Q000235:genetics; D019382:Human Growth Hormone / Q000097:blood*; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000378:metabolism*; D008297:Male; D013577:Syndrome
chemical_list: D019382:Human Growth Hormone; D007334:Insulin-Like Growth Factor I