ICF syndrome with variable expression in sibs.
نویسندگان
چکیده
We describe a new familial case of ICF syndrome (immunodeficiency, centromeric instability, facial anomalies) in a woman of 29 years and in her brother of 30 years. The proband showed mental retardation, facial anomalies, recurrent respiratory infections, combined deficit of IgM and IgE immunoglobulin classes, and paracentromeric heterochromatin instability of chromosomes 1, 9, and 16. The brother had minor signs of the syndrome and had an apparently normal phenotype. Their parents were healthy and non-consanguineous. Chromosome anomalies consisted of homologous and non-homologous associations, chromatid and isochromatid breaks, deletions of whole arms, interchanges in the paracentromeric region, and multibranched configurations of chromosomes 1, 9, and 16. CD bands and fluorescence in situ hybridisation with alphoid DNA sequence probes specific for the centromeres of chromosomes 1 and 16 showed that the centromere was not directly implicated in the formation of multibranched configurations. These cases indicate the autosomal recessive mode of inheritance and the variable expressivity of the ICF syndrome.
منابع مشابه
THE SYNDROME OF DIABETES INSIPIDUS, DIABETES MELLITUS, OPTIC ATROPHY, DEAFNESS, AND ATONIA OF THE URINARY TRACT (DIDMOAD SYNDROME). TWO AFFECTED SIBS AND A SHORT REVIEW OF THE LITERATURE
Two brothers with DIDMOAD syndrome are reported. The older brother has diabetes mellitus (type I), diabetes insipidus, optic atrophy, deafness and atonia of the urinary tract with severe symptoms such as diabetic ketoacidosis and frequent urinary tract infections. His younger brother had the same manifestations but with less severity. We report the findings of our two patients and compare ...
متن کاملGermline genes hypomethylation and expression define a molecular signature in peripheral blood of ICF patients: implications for diagnosis and etiology
BACKGROUND Immunodeficiency Centromeric Instability and Facial anomalies (ICF) is a rare autosomal recessive disease characterized by reduction in serum immunoglobulins with severe recurrent infections, facial dysmorphism, and more variable symptoms including mental retardation. ICF is directly related to a genomic methylation defect that mainly affects juxtacentromeric heterochromatin regions ...
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We report four sibs, two males and two females, with severe and early onset asymmetrical intrauterine growth retardation (IUGR) with a disproportionally large head and a fetal akinesia deformation sequence. Neuromuscular studies were normal in the four sibs. Variable acral malformations (bilateral cleft hand in one male, proximal syndactyly of the toes (right II-III; left II-III/IV-V) in the ot...
متن کاملA case with ICF syndrome lost to rubella pneumonitis.
The immunodeficiency, centromeric instability, and facial anomalies (ICF) syndrome is a rare autosomal recessive disorder characterized by variable immunodeficiency, instability of the pericentromeric heterochromatin, and facial dysmorphism. Here we report a new case of ICF syndrome who died of rubella pneumonitis. A six year-old-girl who was the first child of consanguineous parents was admitt...
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ورودعنوان ژورنال:
- Journal of medical genetics
دوره 30 5 شماره
صفحات -
تاریخ انتشار 1993