Patients harboring causative gene variants in RAS GTPase MRAS develop Noonan syndrome and early-onset hypertrophic cardiomyopathy. Here, we describe the generation of a human iPSC line harboring the Noonan syndrome-associated MRAS p.G23V variant by using CRISPR/Cas9 technology. The established MRAS iPSC line allows to study MRAS-specific pathomechanisms and to test novel therapeutic strategies in various disease-relevant cell types and tissues.
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http://dx.doi.org/10.1016/j.scr.2023.103108 | DOI Listing |
medRxiv
October 2024
Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, MD, USA.
Purpose: Genomic ascertainment of electronic health record-linked exome data in two large biobanks was used to quantify germline pathogenic/likely pathogenic (P/LP) variant prevalence, cancer prevalence, and survival in adults with non- RAS/mitogen-activated protein kinase genes (RASopathies).
Patients And Methods: Germline RASopathy variants were examined from adult participants in UK Biobank (UKBB; n=469,802), Geisinger MyCode (n=167,050) and Mount Sinai Bio (n=30,470). Variants were classified as per American College of Medical Genetics/Association for Molecular Pathology criteria and reviewed by a RASopathy variant expert.
Stem Cell Res
December 2024
Department of Cardiac Surgery, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China; Binjiang Institute of Zhejiang University, Hangzhou, Zhejiang, China; Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada. Electronic address:
The leucine zipper-like transcriptional regulator 1 (LZTR1) gene has been reported to be associated with many kinds of human diseases, including cardiac disease, Noonan syndrome, and schwannomatosis. In this study, peripheral blood mononuclear cells (PBMCs) derived from patient diagnosed with dilated cardiomyopathy (DCM) was successfully reprogrammed into the human induced pluripotent stem cells (iPSCs) line, harboring a distinct heterozygous mutation in the LZTR1 gene. The established patient-derived iPSCs expressed endogenous pluripotent markers, demonstrated the potential to differentiate into three germ layers (endoderm, mesoderm, and ectoderm), and exhibited a normal karyotype.
View Article and Find Full Text PDFTunis Med
October 2024
Washington DC VA Medical Center, Department of Pathology, 20422, Washington, DC, USA.
Introduction: Granular cell tumors (GCT) are predominantly benign neoplasms composed by cells with abundant eosinophilic granular cytoplasm. Although the majority of GCTs exhibit a benign clinical course, a minority display cytological atypia and may exhibit aggressive, cancer-like behavior. Definitive evidence of malignancy in GCTs is reliably established only through the presence of metastasis.
View Article and Find Full Text PDFFront Oncol
September 2024
The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, United States.
Neurocrit Care
September 2024
Department of Intensive Care and Hyperbaric Medicine, The Alfred Hospital, Melbourne, VIC, Australia.
Background: The aim of this study was to develop a consensus-based set of indicators of high-quality acute moderate to severe traumatic brain injury (msTBI) clinical management that can be used to measure structure, process, and outcome factors that are likely to influence patient outcomes. This is the first stage of the PRECISION-TBI program, which is a prospective cohort study that aims to identify and promote optimal clinical management of msTBI in Australia.
Methods: A preliminary set of 45 quality indicators was developed based on available evidence.
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