Lilian R. Hiltebeitel, Steve Seltzsam, Chunyan Wang, Ted Lee, Leah Bolsius, Mohamed Shalaby, Sherif El Desoky, Jameela A. Kari, Shirlee Shril, Friedhelm Hildebrandt, Nina Mann
{"title":"Genetic Contributions to Lower Urinary Tract Dysfunction","authors":"Lilian R. Hiltebeitel, Steve Seltzsam, Chunyan Wang, Ted Lee, Leah Bolsius, Mohamed Shalaby, Sherif El Desoky, Jameela A. Kari, Shirlee Shril, Friedhelm Hildebrandt, Nina Mann","doi":"10.1002/ajmg.a.63859","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Lower urinary tract dysfunction (LUTD) can manifest as a spectrum of voiding symptoms in childhood, including urinary urgency, frequency, hesitancy, and incontinence. In severe cases, it can lead to frequent urinary tract infections, hydronephrosis, kidney scarring, and chronic kidney disease. Non-neurogenic neurogenic bladder (NNNB) is a diagnosis of exclusion in which children develop discoordination between the detrusor smooth muscle and external urethral sphincter in the absence of neurological or obstructive lesions, resulting in severe LUTD. Historically, such disorders of voiding were thought to result from behavioral maladaptation. However, it is now increasingly recognized that some individuals may have an underlying genetic etiology for their symptoms. Here, we performed exome sequencing for five probands with NNNB or other forms of severe LUTD, and we identified two individuals with monogenic etiologies for their symptoms. One individual had a homozygous exon 9 deletion in <i>HPSE2</i> and another had a homozygous single amino acid deletion (p.Gly167del) in <i>ARL6</i>. We performed PCR experiments to identify the breakpoints of the <i>HPSE2</i> exon 9 deletion and implicate microhomology-mediated end joining as a potential mechanism by which the deletion arose. These findings suggest that genetic testing should be considered for children with severe LUTD.</p>\n </div>","PeriodicalId":7507,"journal":{"name":"American Journal of Medical Genetics Part A","volume":"197 1","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Journal of Medical Genetics Part A","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ajmg.a.63859","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GENETICS & HEREDITY","Score":null,"Total":0}
引用次数: 0
Abstract
Lower urinary tract dysfunction (LUTD) can manifest as a spectrum of voiding symptoms in childhood, including urinary urgency, frequency, hesitancy, and incontinence. In severe cases, it can lead to frequent urinary tract infections, hydronephrosis, kidney scarring, and chronic kidney disease. Non-neurogenic neurogenic bladder (NNNB) is a diagnosis of exclusion in which children develop discoordination between the detrusor smooth muscle and external urethral sphincter in the absence of neurological or obstructive lesions, resulting in severe LUTD. Historically, such disorders of voiding were thought to result from behavioral maladaptation. However, it is now increasingly recognized that some individuals may have an underlying genetic etiology for their symptoms. Here, we performed exome sequencing for five probands with NNNB or other forms of severe LUTD, and we identified two individuals with monogenic etiologies for their symptoms. One individual had a homozygous exon 9 deletion in HPSE2 and another had a homozygous single amino acid deletion (p.Gly167del) in ARL6. We performed PCR experiments to identify the breakpoints of the HPSE2 exon 9 deletion and implicate microhomology-mediated end joining as a potential mechanism by which the deletion arose. These findings suggest that genetic testing should be considered for children with severe LUTD.
期刊介绍:
The American Journal of Medical Genetics - Part A (AJMG) gives you continuous coverage of all biological and medical aspects of genetic disorders and birth defects, as well as in-depth documentation of phenotype analysis within the current context of genotype/phenotype correlations. In addition to Part A , AJMG also publishes two other parts:
Part B: Neuropsychiatric Genetics , covering experimental and clinical investigations of the genetic mechanisms underlying neurologic and psychiatric disorders.
Part C: Seminars in Medical Genetics , guest-edited collections of thematic reviews of topical interest to the readership of AJMG .