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dc.contributor.advisorÖzçelik, Tayfun
dc.contributor.authorSayı, Ayça
dc.date.accessioned2016-07-01T11:02:41Z
dc.date.available2016-07-01T11:02:41Z
dc.date.issued2001
dc.identifier.urihttp://hdl.handle.net/11693/29646
dc.descriptionCataloged from PDF version of article.en_US
dc.description.abstractRett Syndrome (RTT) is a progressive X-linked dominant childhood neurodevelopmental disorder, affecting 1/10,000-15,000 girls. The disease-causing gene was identified as MECP2 on chromosome Xq28, and mutations have been found in approximately 80% of patients diagnosed with RTT. We screened for eight recurrent MECP2 mutations (R106W, P152R, T158M, R306C, R168X), one rare mutation (F155S) and one polymorphism (E397K) in 63 RTT patients divided into four groups as classic-RTT (n=43), variant-RTT (n=14), male-RTT (n=4), and familial-RTT (n=2). We identified the recurrent mutations in 18 cases. These are three R106W, two P152R, five T158M, five R306C, and three R270X mutations. R168X and F155S were not detected in our patients. Only one patient had the E397K polymorphism who also had the R306C mutation. All these mutations were confirmed via sequencing analysis. In exon 4 of MECP2, several deletion types of mutations are known. By PCR analysis, two patients were found to have an approximately 44 bp deletion in exon 4. Also, a novel mutation – T197M– was identified in one of the patients. We identified a boy affected by RTT who is mosaic for the R270X mutation, and had a normal male karyotype. This result show that a recurrent MECP2 mutation could lead to a similar phenotype in females and males, if the male is a mosaic for the mutation in his somatic cells. MECP2 mutation frequency for the four groups is as follows: 37.2% for the classic-RTT, 28.57% for the variantRTT, and 25% for the male-RTT groups. No mutation was found in the familial group. We could not find a consistent correlation between the clinical symptoms and the type of mutations or the X chromosome inactivation patterns of the patients.en_US
dc.description.statementofresponsibilitySayı, Ayçaen_US
dc.format.extent111 leavesen_US
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject.lccWS107 .S29 2001en_US
dc.subject.lcshRett syndrome.en_US
dc.titleAnalysis of MECP2 gene mutations in Rett syndrome patientsen_US
dc.typeThesisen_US
dc.departmentDepartment of Moleculer Biologyen_US
dc.publisherBilkent Universityen_US
dc.description.degreeM.S.en_US
dc.identifier.itemidBILKUTUPB059621


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