Genotype-phenotype correlation of a 5q22.3 deletion associated with craniofacial and limb defects |
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Authors: | Lee Seungok Chae Hyojin Park In Yang Kim Myungshin Kim Yonggoo Shin Jong Chul Lee Juyoung Son Jungok |
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Affiliation: | a Department of Laboratory Medicine, The Catholic University of Korea, Seoul, Republic of Koreab Department of Obstetrics and Gynecology, The Catholic University of Korea, Seoul, Republic of Koreac Department of Pediatrics, The Catholic University of Korea, Seoul, Republic of Koread Catholic Genetic Laboratory Center, The Catholic University of Korea, Seoul, Republic of Korea |
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Abstract: | We describe here a newborn with a de novo 22.6 Mb interstitial deletion of chromosome 5q22.3. The clinical findings included brachycephaly, a high forehead, hypertelorism with prominent eyes, low-set ears, clenched hands, club feet, a prominent coccyx with hair, ambiguous genitalia, inguinal hernia, heart defect and severe failure to thrive. This case had a more severe phenotype, compared with the previous reports of interstitial 5q syndrome. High resolution multicolor banding and array comparative genomic hybridization (array CGH) analysis delineated the breakpoints at 5q22.3 and 5q31.2. There were no obvious candidate genes for the specific correlation with the phenotypes except a PITX1 gene associated with the phenotype of club feet. Further cumulative data based on the molecular approach are needed to establish the genotype-phenotype correlation and to understand the role and influence of the genes in the interstitial 5q syndrome. |
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