title: Multiple small hyperintense lesions in the subcortical white matter on cranial MR images in two Turkish brothers with cold-induced sweating syndrome caused by a novel missense mutation in the CRLF1 gene.
abstract: Cold-induced sweating syndrome (CISS) is a rare autosomal recessive disorder characterized by excess sweating induced by cold exposure, camptodactyly and kyphoscoliosis. CISS is genetically heterogeneous. Deficiency of the CRLF1 or the CLCF1 gene function results in one of two clinically indistuinguishable disorders called CISS1 and CISS2, respectively. We present two Turkish brothers (22 and 13 years old) who had excess sweating induced by cold exposure, severe dorsal scoliosis, camptodactyly, reduced pain sensitivity and marfanoid habitus. The patients were homozygous and their parents heterozygous for a novel missense mutation c.413C>T (p.Pro138Leu) in CRLF1 gene. The cranial magnetic resonance imaging (MRI) of two patients also showed multiple small hyperintense lesions in the subcortical white matter. Similar MRI finding has also been reported in a Japanese woman with CISS1 and marfanoid habitus. The lesions found in the present cases showed no characteristic features. However, multiple small hyperintense lesions in subcortical white matter on T2 weighted and fluid attenuation inversion recovery (FLAIR) images may support the clinical diagnosis of CISS.
authors.affiliation: Department of Pediatric Genetics, Cerrahpaşa Medical School, Istanbul University, Istanbul, Turkey. beyhan@istanbul.edu.tr
authors.forename: Beyhan
authors.initials: B
authors.lastname: Tüysüz
authors.forename: Ozgür
authors.initials: O
authors.lastname: Kasapçopur
authors.forename: Cengiz
authors.initials: C
authors.lastname: Yalçınkaya
authors.forename: Zehra
authors.initials: Z
authors.lastname: Işık Haşıloğlu
authors.forename: Per M
authors.initials: PM
authors.lastname: Knappskog
authors.forename: Helge
authors.initials: H
authors.lastname: Boman
mesh_terms: D000293:Adolescent; D001921:Brain / Q000473:pathology*; D003080:Cold Temperature / Q000009:adverse effects; D004252:DNA Mutational Analysis; D006801:Humans; D006945:Hyperhidrosis / Q000209:etiology / Q000235:genetics* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D020125:Mutation, Missense / Q000235:genetics*; D009413:Nerve Fibers, Myelinated / Q000473:pathology*; D018121:Receptors, Cytokine / Q000235:genetics*; D035781:Siblings; D013546:Sweating; D014421:Turkey; D055815:Young Adult
chemical_list: D018121:Receptors, Cytokine; C113554:cytokine-like factor-1