Hirschsprung Disease clinical trials at University of California Health
2 research studies open to eligible people
Identification Genetic, Immunologic and Microbial Markers of Hirschsprung Associated Enterocolitis in Children With Hirschsprung Disease
open to eligible people ages up to 17 years
To identify demographic, clinical, genetic, immunologic and/or microbial (i.e., fecal stream characterization) risk factors that influence the likelihood of development of the HAEC phenotype in children who carry the diagnosis of HD. The newly formed HAEC Collaborative Research Group (HCRG) will utilize the 4 participating centers in the current consortia and recruit additional centers to enroll children diagnosed with Hirschsprung disease. 1a: To recruit 200 patients with Hirschsprung disease without HAEC. 1b: To recruit 200 patients with Hirschsprung disease and HAEC using standardized diagnostic criteria by collaborating with participating members of the HAEC Collaborative Research Group. 1c: To collect clinical and demographic information from well-characterized HD patients both with and without HAEC. 1d: To collect samples blood for DNA for genome wide association study (GWAS) by high throughput SNP technology and mutational analysis of known HSCR genes. 1e: To collect serum samples at the time of recruitment in a subset cohort (n=50 HD only, n=50 HD + HAEC) for serological immune markers known for inflammatory bowel disease (IBD) including ANCA, ASCA, OMPC, I2, and CBir1 and any newly identified markers. 1f: To collect and store fresh fecal specimens for future evaluation by molecular methodologies to determine relative proportions of enteric microflora in a subset cohort (n=50 HD only, n=50 HD + HAEC) of children (<18 years). 1g: To establish a Centralized Data Coordinating Center for data collection, data quality and detailed data analyses (CSMC) and tissue bank (CSMC) to facilitate specimen analysis for this study. The HAEC risk factor identification will be completed by multivariate logistic regression analysis. Genetic association will be studied for each SNP in the GWAS together with all other potential risk factors. Further analysis will be carried out to evaluate multiple SNPs/genes simultaneously.
open to eligible people ages 13-100
The aim of this study is to determine the contribution of genetic factors to the pathogenesis of diseases, including diseases such as Parkinson's disease, Hirschsprung's disease, and autism. Patient-derived cellular models of diseases will be developed, which will require the collection of blood samples from patients and healthy individuals in order to generate induced pluripotent stem cells (iPSCs) for the development of iPSC-derived human cell cultures. These human cellular models will be phenotyped using a variety of methods, including cellular, molecular, and biochemical assays. Because these human cellular models will retain the genetic background from the patients and control subjects, this will allow us to determine the contribution of genetics to disease phenotypes. Such disease-specific pluripotent stem cell lines will be invaluable tools for many basic and translational research applications, including pathophysiological studies in a developmental context, and innovation and screening of small molecule drugs capable of reversing the disease phenotype and potentially leading to a cure for a broad range of diseases, where appropriate in vitro or in vivo disease models do not exist.