Crisponi syndrome: A new mutation in CRLF 1 gene associated with moderate outcome

Department of Neonatology, Dr Sami Ulus Maternity and Children Training and Research Hospital, Ankara, Turkey.
Genetic counseling (Geneva, Switzerland) (Impact Factor: 0.44). 09/2013; 24(2):161-6.
Source: PubMed


Crisponi syndrome (CS) is a rare, autosomal recessive disorder, characterized by hyperthermia, extensive muscular contractions in the face after even minimal stimuli or crying, hypertonia, opisthotonus, camptodactyly, and typical facial features. Recently, it has been demonstrated that CRLF1 (cytokine receptor-like factor 1) gene mutation is associated with CS. Here we report a case of CS with a new mutation in the CRLF1 gene associated with moderate clinical phenotype.

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    • "To date, 24 mutations have already been reported in literature as associated with CS/CISS1 [Knappskog et al., 2003; Hahn et al., 2006; Crisponi et al., 2007; Dagoneau et al., 2007; Okur et al., 2008; Thomas et al., 2008; Di Leo et al., 2010; Hahn et al., 2010; Yamazaki et al., 2010; Cosar et al., 2011; Hahn and Boman, 2011; Herholz et al., 2011; Benoit et al., 2012; González Fernández et al., 2013; Hakan et al., 2012; Tüysüz et al., 2013; Uzunalic et al., 2013], whereas here we report for the first time additional 11 novel mutations (Tables 1 and 2). The study protocol was approved by the Münster University Hospital Ethical Committee in Germany and all subjects involved in this study gave informed written consent. "
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    ABSTRACT: Crisponi syndrome (CS) and cold-induced sweating syndrome type 1 (CISS1) share clinical characteristics, such as dysmorphic features, muscle contractions, scoliosis and cold-induced sweating, with CS patients showing a severe clinical course in infancy involving hyperthermia associated with death in most cases in the first years of life. To date 24 distinct CRLF1 mutations have been found either in homozygosity or in compound heterozygosity in CS/CISS1 patients, with the highest prevalence in Sardinia, Turkey and Spain. By reporting 11 novel CRLF1 mutations, here we expand the mutational spectrum of CRLF1 in the CS/CISS1 syndrome to a total of 35 variants and present an overview of the different molecular and clinical features of all of them. To catalogue all the 35 mutations we created a CRLF1 mutations database, based on the Leiden Open (source) Variation Database (LOVD) system ( Overall, the available functional and clinical data support the fact that both syndromes actually represent manifestations of the same autosomal recessive disorder caused by mutations in the CRLF1 gene. Therefore, we propose to rename the two overlapping entities with the broader term of Crisponi/CISS1 syndrome. This article is protected by copyright. All rights reserved.
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    ABSTRACT: Cold-induced sweating syndrome (CISS) is a rare autosomal recessive disorder characterized by profuse sweating at cold environmental temperatures, facial dysmorphism and skeletal features. The infantile presentation of CISS, referred to as Crisponi syndrome (CS), is characterized by facial muscular contractures in response to slight tactile stimuli or during crying, by life-threatening feeding difficulties caused by suck and swallow inabilities, and by intermittent hyperthermia. High febrile crises can lead to death within the first months of life. In preadolescence, surviving patients develop kyphoscoliosis and abnormal sweating. CISS is a genetically heterogeneous disorder caused by mutations in CRLF1 in more than 90 percent of patients (CISS1) and by mutations in CLCF1 in the remaining patients (CISS2). It is now well demonstrated that all patients with an infantile-onset CS will develop CISS, confirming that CS and CISS are not “allelic disorders” but the same clinical entity described at different ages of affected patients. Here we report on a Turkish patient with a phenotype consistent with CS/CISS1 and a nonsense homozygous mutation (c.829C>T, p.R277X) in the CRLF1 gene. This mutation has already been reported in another Turkish patient with CS/CISS1.
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