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Xu C, Li M, Peng J, Zhang Y, Li H, Zheng G, Wang D. Case report: A case report and literature review of complete trisomy 9. Front Genet 2023; 14:1241245. [PMID: 37719705 PMCID: PMC10500842 DOI: 10.3389/fgene.2023.1241245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/08/2023] [Indexed: 09/19/2023] Open
Abstract
Complete trisomy 9 is a rare and lethal chromosomal anomaly characterized by multisystem dysmorphism and central nervous system (CNS) malformations. This study presents a case of complete trisomy 9 with an unusual phenotypic association and investigates the genetic pathways involved in this chromosomal abnormality. Trisomy 9 leads to a wide range of organ abnormalities, and this research contributes to a better understanding of the phenotype associated with this rare aneuploidy. The literature on the phenotypes of fetuses with various systems affected by complete trisomy 9 was reviewed and summarized. Correct diagnosis and appropriate counseling based on the characteristics of previous reports of fetuses with trisomy 9 is essential in maternity care and clinical management. To provide guidance and help for clinical diagnosis, this study aimed to explore the clinical and genetic characteristics of trisomy 9 syndrome to improve clinicians' understanding of the disease.
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Affiliation(s)
- Chenxia Xu
- Prenatal Diagnosis Center, Boai Hospital of Zhongshan, Zhongshan, Guangdong, China
| | - Miaoyuan Li
- Department of Urology, Zhongshan People’s Hospital, Zhongshan, Guangdong, China
- The First School of Clinical Medicine,Jinan University, Guangzhou, Guangdong, China
| | - Jianming Peng
- Prenatal Diagnosis Center, Boai Hospital of Zhongshan, Zhongshan, Guangdong, China
| | - Yanfang Zhang
- Prenatal Diagnosis Center, Boai Hospital of Zhongshan, Zhongshan, Guangdong, China
| | - Haijun Li
- Prenatal Diagnosis Center, Boai Hospital of Zhongshan, Zhongshan, Guangdong, China
| | - Guobing Zheng
- Prenatal Diagnosis Center, Boai Hospital of Zhongshan, Zhongshan, Guangdong, China
| | - Degang Wang
- Prenatal Diagnosis Center, Boai Hospital of Zhongshan, Zhongshan, Guangdong, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong, China
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López‐Félix J, Flores‐Gallegos L, Garduño‐Zarazúa L, Leis‐Márquez T, Juárez‐García L, Meléndez‐Hernández R, Castelazo‐Morales E, Mayén‐Molina D. Partial trisomy 9: prenatal diagnosis and recurrence within same family. Clin Case Rep 2017; 5:986-992. [PMID: 28588852 PMCID: PMC5457999 DOI: 10.1002/ccr3.970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 10/03/2016] [Accepted: 03/05/2017] [Indexed: 12/14/2022] Open
Abstract
Trisomy 9 can be suspected and confirmed in the prenatal period since the 11–13.6 weeks of screening. In cases of partial trisomy 9, the diagnosis is important especially to counseling the couple due to the increased likelihood of recurrence in subsequent pregnancies.
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