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Integrative determination of atomic structure of mutant huntingtin exon 1 fibrils implicated in Huntington disease.
Nat Commun
December 2024
Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany.
Neurodegeneration in Huntington's disease (HD) is accompanied by the aggregation of fragments of the mutant huntingtin protein, a biomarker of disease progression. A particular pathogenic role has been attributed to the aggregation-prone huntingtin exon 1 (HTTex1), generated by aberrant splicing or proteolysis, and containing the expanded polyglutamine (polyQ) segment. Unlike amyloid fibrils from Parkinson's and Alzheimer's diseases, the atomic-level structure of HTTex1 fibrils has remained unknown, limiting diagnostic and treatment efforts.
View Article and Find Full Text PDFComprehensive molecular characterization to predict immunotherapy response in advanced biliary tract cancer: a phase II trial of pembrolizumab.
Oncol Res
December 2024
Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Background: Immune checkpoint inhibitors (ICIs) are effective in a subset of patients with metastatic solid tumors. However, the patients who would benefit most from ICIs in biliary tract cancer (BTC) are still controversial.
Materials And Methods: We molecularly characterized tissues and blood from 32 patients with metastatic BTC treated with the ICI pembrolizumab as second-line therapy.
[Clinical characteristics and pathogenic variant analysis in a pedigree with syndromic hearing loss caused by likely pathogenic variants in the gene].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
December 2024
Department of Otorhinolaryngology, the Affiliated Children Hospital of Zhengzhou University, Zhengzhou450052, China.
To investigate the pathogenic variants and function of a pedigree with syndromic hearing loss using high-throughput sequencing. Detailed medical history and pedigree history were inquired, and a pedigree chart was drawn. Hearing examinations were performed on this pedigree, and whole-exome sequencing and bioinformatics analysis were performed to screen for suspected pathogenic variants.
View Article and Find Full Text PDF[Genetic analysis of children with nonsyndromic sensorineural hearing loss due to novel mutations/deletions of bialleles].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
December 2024
Medical Genetics Center, Gansu Provincial Maternity and Child-care Hospital, Gansu Provincial Central Hospital, Lanzhou730050, China Gansu Provincial Clinical Research Center for Birth Defects and Rare Diseases, Lanzhou730050, China.
To investigate the clinical and genetic characteristics of nonsyndromic sensorineural hearing loss caused by biallelic variation. A child with hearing impairment who was diagnosed at Gansu Provincial Maternal and Child Health Hospital on May 2022 and was selected as the research object. Peripheral blood of the child and her parents was collected, genomic DNA was extracted.
View Article and Find Full Text PDFSialidosis type 1 in a Turkish family: a case report and review of literatures.
J Pediatr Endocrinol Metab
December 2024
Department of Neurology, Ankara Etlik City Hospital, Ankara, Türkiye.
Objectives: Sialidosis type 1 is a rare autosomal recessive lysosomal storage disorder caused by pathogenic variants in the gene, which encodes the sialic acid-degrading enzyme α-neuraminidase. Sialidosis type 1 is a milder form with a late-onset phenotype, characterized by progressive myoclonic epilepsy and ataxia with cherry-red spots. Sialidosis type 2 is an early-onset and more severe form presenting with dysmorphic features, hepatosplenomegaly and cognitive delay.
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