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자료유형
학술저널
저자정보
김원지 (Department of Obstetrics and Gynecology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea) 윤수인 (Department of Obstetrics and Gynecology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea) 허원영 (Department of Laboratory Medicine and Genetics Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea) 이새미 (Department of Obstetrics and Gynecology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea) 장자현 (Department of Laboratory Medicine and Genetics Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea) 성지희 (Department of Obstetrics and Gynecology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea) 오수영 (성균관대학교)
저널정보
대한주산의학회 Perinatology Perinatology Vol.34 No.2
발행연도
2023.6
수록면
99 - 104 (6page)

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Mirror-image polydactyly, an extremely rare variant characterized by recognizable anteroposterior symmetry, is often comorbid with ulnar or fibular duplication (dimelia). Herein, we describe a case of twin pregnancy with fetal mirror hands and feet, increased nuchal translucency, cystic hygroma, and ulnar dimelia in both twins. Amniocentesis revealed normal karyotypes. The pregnancy was terminated at 18 weeks. Whole-exome sequencing and chromosomal microarray of the cord blood identified a 1.345 millon base pairs (Mbp) duplication on chromosome 2q35 containing 36 OMIM genes, including the Indian hedgehog locus. This copy number variation was similar to that linked to acrocallosal-like syndrome characterized by extensive polysyndactyly and craniofacial abnormalities. A de novo duplication including the Indian hedgehog locus on chromosome 2q35 was detected through chromosomal microarray in a twin pregnancy with mirror hands and feet, suggesting that copy number variation involving the Indian hedgehog gene on chromosome 2q was the cause of polydactyly with ulnar dimelia.

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