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RSK4 promotes the metastasis of clear cell renal cell carcinoma by activating RUNX1-mediated angiogenesis.
Cancer Biol Ther
December 2025
State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital, Air Force Military Medical University, Xi'an, China.
Ribosomal S6 protein kinase 4 (RSK4), a member of the serine‒threonine kinase family, plays a vital role in the Ras‒MAPK pathway. This kinase is responsible for managing several cellular activities, including cell growth, proliferation, survival, and mobility. In this study, we observed higher RSK4 protein expression in clear cell renal cell carcinoma (ccRCC) than in normal kidney tissue, and the overexpression of RSK4 might predict poor outcomes for ccRCC patients.
View Article and Find Full Text PDFLife-threatening Lymphatic Malformation With Somatic Activating NRAS Mutation Successfully Treated With Trametinib: A Case Study.
J Pediatr Hematol Oncol
January 2025
Cook Children's Medical Center, Fort Worth, TX.
Kaposiform lymphangiomatosis (KLA) is a rare and aggressive subtype of complex lymphatic anomalies (CLA), characterized by abnormal lymphatic proliferation leading to distinct clinical manifestations. Despite the complexity of this condition, there is no established standard therapy, and treatment options such as sclerotherapy, laser therapy, and surgery remain variably effective and are limited to symptom management rather than curative. Sirolimus, an mTOR pathway inhibitor, has shown promise as a primary therapy, particularly in patients without a driver mutation.
View Article and Find Full Text PDFQ241R mutation of Braf causes neurological abnormalities in a mouse model of cardio-facio-cutaneous syndrome, independent of developmental malformations.
Hum Mol Genet
January 2025
Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma 371-8514, Japan.
Constitutively active mutants of BRAF cause cardio-facio-cutaneous (CFC) syndrome, characterized by growth and developmental defects, cardiac malformations, facial features, cutaneous manifestations, and mental retardation. An animal model of human CFC syndrome, the systemic BrafQ241R/+ mutant mouse, has been reported to exhibit multiple CFC syndrome-like phenotypes. In this study, we analyzed the effects of Braf mutations on neural function, separately from their effects on developmental processes.
View Article and Find Full Text PDFRasopathies, including Noonan Syndrome (NS) and Neurofibromatosis type 1 (NF1), are developmental disorders caused by germline mutations in genes of the RAS/mitogen-activated protein kinase pathway (RAS-MAPK). This study investigates irritability, a highly prevalent transdiagnostic construct, in children with Rasopathies and the impact of Rasopathy status on the associations between irritability, emotional dysregulation-related disorders, and social skills impairments. The sample comprise 174 children aged 4-17 (age mean = 9.
View Article and Find Full Text PDFSerially quantifying TERT rearrangement breakpoints in circulating tumor DNA enables minimal residual disease monitoring in patients with neuroblastoma.
Cancer Res Commun
January 2025
Charité, Berlin, Germany.
Telomerase is reactivated by genomic TERT rearrangements in ~30% of diagnosed high-risk neuroblastomas. Dismal patient prognosis results if the RAS/MAPK/ALK signaling transduction network also harbors mutations. We present a liquid biopsy-based monitoring strategy for this particularly vulnerable pediatric patient subgroup, for whom real-time molecular diagnostic tools are limited to date.
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