{"title":"Genetic Analysis of 17q Terminal Partial Trisomy","authors":"Huiling Zheng, Lin Zheng, Zhi Huang, Guangping Li, Daili Tang, Xue Yang, Tian Tian","doi":"10.1002/ccr3.9611","DOIUrl":null,"url":null,"abstract":"<p>Chromosomal trisomy syndrome is associated with diverse clinical phenotypes, including intellectual disability. Partial trisomy of the distal 17q is a rare anomaly with similar clinical features, including psychomotor and growth deficits, facial dysmorphism, and microcephaly. Here, we describe three patients from two unrelated families with terminal trisomy 17q. We performed G-banding karyotype and chromosomal microarray analyses. The child in Family 1 had a 31.3 Mb mosaic duplication on chromosome 17. Family 2 comprised dizygotic twins with a 263 kb deletion on chromosome 15 and a 9.2 Mb duplication on chromosome 17; however, normal karyotyping results were obtained for both parents. We also analyzed the genetic mechanisms underlying the occurrence of these chromosomal aberrations and summarized the literature describing known genotype–phenotype correlations. Given the rarity of partial trisomy of terminal 17q, these cases will provide new insights into the diagnosis of this condition and genotype–phenotype correlations, which can aid in the detection of such conditions and genetic counseling.</p>","PeriodicalId":10327,"journal":{"name":"Clinical Case Reports","volume":"12 12","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ccr3.9611","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Clinical Case Reports","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ccr3.9611","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MEDICINE, GENERAL & INTERNAL","Score":null,"Total":0}
引用次数: 0
Abstract
Chromosomal trisomy syndrome is associated with diverse clinical phenotypes, including intellectual disability. Partial trisomy of the distal 17q is a rare anomaly with similar clinical features, including psychomotor and growth deficits, facial dysmorphism, and microcephaly. Here, we describe three patients from two unrelated families with terminal trisomy 17q. We performed G-banding karyotype and chromosomal microarray analyses. The child in Family 1 had a 31.3 Mb mosaic duplication on chromosome 17. Family 2 comprised dizygotic twins with a 263 kb deletion on chromosome 15 and a 9.2 Mb duplication on chromosome 17; however, normal karyotyping results were obtained for both parents. We also analyzed the genetic mechanisms underlying the occurrence of these chromosomal aberrations and summarized the literature describing known genotype–phenotype correlations. Given the rarity of partial trisomy of terminal 17q, these cases will provide new insights into the diagnosis of this condition and genotype–phenotype correlations, which can aid in the detection of such conditions and genetic counseling.
期刊介绍:
Clinical Case Reports is different from other case report journals. Our aim is to directly improve global health and increase clinical understanding using case reports to convey important best practice information. We welcome case reports from all areas of Medicine, Nursing, Dentistry, and Veterinary Science and may include: -Any clinical case or procedure which illustrates an important best practice teaching message -Any clinical case or procedure which illustrates the appropriate use of an important clinical guideline or systematic review. As well as: -The management of novel or very uncommon diseases -A common disease presenting in an uncommon way -An uncommon disease masquerading as something more common -Cases which expand understanding of disease pathogenesis -Cases where the teaching point is based on an error -Cases which allow us to re-think established medical lore -Unreported adverse effects of interventions (drug, procedural, or other).