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Wang J, Xiao L, Wang J, Ding Z, Ni J, Long X. Mosaic ring chromosome 18 in a Chinese child with epilepsy: a case report and review of the literature. Neurol Sci 2021; 42:5231-5239. [PMID: 33829328 DOI: 10.1007/s10072-021-05143-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 02/22/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Ring chromosome 18 (r[18]) is a rare syndrome in which one or both ends of chromosome 18 are lost and the remaining chromosome rejoins to form ring-shaped figures. It is characterized by developmental delay/cognitive disability, facial dysmorphisms, and immunological problems. The phenotype associated with epilepsy is rare and has not yet been reported in China. METHODS We report herein the case of a 12-year-old Chinese girl who presented with typical facial dysmorphisms, developmental delay, cognitive disability, hyperactivity, and epilepsy and discuss the clinical features of r(18) syndromes through comparison with previously described cases worldwide. RESULTS We describe the characteristics of all seizures that have been reported in these cases and propose that the appearance of epilepsy in r(18) patients may be associated with the abnormality of chromosome karyotypes. Further studies are warranted to confirm this.
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Affiliation(s)
- Jing Wang
- Department of Neurology, Dingxi Second People's Hospital, Dingxi, Gansu, People's Republic of China
| | - Ling Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Junling Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, People's Republic of China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, People's Republic of China.,National Clinical Research Centre for Geriatric Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Zijin Ding
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Jie Ni
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, People's Republic of China
| | - Xiaoyan Long
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
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Yardin C, Esclaire F, Terro F, Baclet MC, Barthe D, Laroche C. First familial case of ring chromosome 18 and monosomy 18 mosaicism. ACTA ACUST UNITED AC 2001. [DOI: 10.1002/ajmg.10059] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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