{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T20:50:11Z","timestamp":1790369411901,"version":"4.1.0"},"reference-count":68,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"10","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation"],"published-print":{"date-parts":[[1997,5,20]]},"abstract":"<jats:p>\n            <jats:italic>Background<\/jats:italic>\n            X-linked dilated cardiomyopathy (XLCM) has previously been shown to be due to mutations in the dystrophin gene, which is located at Xp21. Mutations in the 5\u2032 portion of the gene, including the muscle promoter, exon 1, and the exon 1\u2013intron 1 splice site, have been reported previously. The purpose of this study was to analyze the originally described family with XLCM (and others) for dystrophin mutations.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Methods and Results<\/jats:italic>\n            Polymerase chain reaction (PCR) was used to amplify genomic DNA, and reverse-transcriptase PCR amplified cDNA from RNA obtained from heart and lymphoblastoid cell lines. Primers to the muscle promoter, brain promoter, and Purkinje cell promoter were designed, in addition to the exon 1 to exon 14 regions of dystrophin. Single-strand conformation polymorphism analysis was used for mutation detection, and DNA sequencing defined the mutation. Protein modeling was used for amino acid and secondary structure analysis. A missense mutation in exon 9 at nucleotide 1043 was identified that causes an alanine to be substituted for threonine, a highly conserved amino acid, at position 279 (T279A). This mutation results in a change in polarity in the evolutionarily conserved first hinge region (H1) of the protein and substitution of a \u03b2-sheet for \u03b1-helix in this portion of the protein, destabilizing the protein.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Conclusions<\/jats:italic>\n            A novel missense mutation in exon 9 of dystrophin causing an abnormality at H1 leads to the cardiospecific phenotype of XLCM.\n          <\/jats:p>","DOI":"10.1161\/01.cir.95.10.2434","type":"journal-article","created":{"date-parts":[[2012,6,12]],"date-time":"2012-06-12T00:41:02Z","timestamp":1339461662000},"page":"2434-2440","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":147,"title":["Evidence for a Dystrophin Missense Mutation as a Cause of X-Linked Dilated Cardiomyopathy"],"prefix":"10.1161","volume":"95","author":[{"given":"Rocio","family":"Ortiz-Lopez","sequence":"first","affiliation":[{"name":"the Departments of Pediatrics (R.O.-L., H.L., J.S., V.G., J.A.T.) and Molecular and Human Genetics (J.A.T.), Baylor College of Medicine, Houston, Tex."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hua","family":"Li","sequence":"additional","affiliation":[{"name":"the Departments of Pediatrics (R.O.-L., H.L., J.S., V.G., J.A.T.) and Molecular and Human Genetics (J.A.T.), Baylor College of Medicine, Houston, Tex."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason","family":"Su","sequence":"additional","affiliation":[{"name":"the Departments of Pediatrics (R.O.-L., H.L., J.S., V.G., J.A.T.) and Molecular and Human Genetics (J.A.T.), Baylor College of Medicine, Houston, Tex."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Veronica","family":"Goytia","sequence":"additional","affiliation":[{"name":"the Departments of Pediatrics (R.O.-L., H.L., J.S., V.G., J.A.T.) and Molecular and Human Genetics (J.A.T.), Baylor College of Medicine, Houston, Tex."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey A.","family":"Towbin","sequence":"additional","affiliation":[{"name":"the Departments of Pediatrics (R.O.-L., H.L., J.S., V.G., J.A.T.) and Molecular and Human Genetics (J.A.T.), Baylor College of Medicine, Houston, Tex."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"e_1_3_2_1_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199412083312307"},{"key":"e_1_3_2_2_2","first-page":"1458","volume":"17","year":"1992","unstructured":"Manolio TA, Baughman KL, Rodeheffer R, Pearson TA, Bristow JD, Michels VV, Abelmann WH, Harlan WR. 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