Publications by authors named "Cowley M"

Autosomal Dominant Polycystic Kidney Disease (ADPKD) results in progressive cysts that lead to kidney failure, and is caused by heterozygous germline variants in PKD1 or PKD2. Cyst pathogenesis is not definitively understood. Somatic second-hit mutations have been implicated in cyst pathogenesis, though technical sequencing challenges have limited investigation.

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  • The melanocortin system plays a crucial role in controlling energy balance and weight regulation, with recent findings indicating its effects on peripheral tissues like skeletal muscle, independent of the brain or SNS.
  • Infusing α-melanocyte-stimulating hormone (αMSH) directly into the femoral artery significantly increased heat production in skeletal muscle, while not affecting food intake, demonstrating its local action in energy expenditure.
  • The study also revealed that αMSH infusion enhanced mitochondrial function, increased glucose uptake in skeletal muscle, and showed that blocking SNS with certain drugs did not impact αMSH's effects, highlighting its unique role in energy regulation.
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Noonan Syndrome (NS) is associated with an increased risk of low-grade central nervous system tumours in children but only very rarely associated with high-grade gliomas. Here we describe the first reported case of a spinal high-grade astrocytoma with piloid features (HGAP) in a child with NS. This case was a diagnostic and treatment dilemma, prior to whole-genome germline and tumour sequencing, tumour transcriptome sequencing and DNA methylation analysis.

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  • - Food cravings are a strong desire for tasty foods that can lead to obesity, as they aren't just related to hunger but to complex emotional and psychological factors, making standard weight management approaches inadequate.
  • - A review of 115 studies highlighted the biological and psychological factors driving cravings, as well as current measurement and management strategies, including lifestyle changes, psychological therapies (like CBT), and certain medications that can help control cravings.
  • - The research suggests a need for a new, flexible model for addressing food cravings in weight management settings that can adapt to individual needs over time for effective long-term weight loss.
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Background: The growth factor receptor bound protein 7 (Grb7) family of signalling adaptor proteins comprises Grb7, Grb10 and Grb14. Each can interact with the insulin receptor and other receptor tyrosine kinases, where Grb10 and Grb14 inhibit insulin receptor activity. In cell culture studies they mediate functions including cell survival, proliferation, and migration.

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Purpose: Families living with mitochondrial diseases (MD) often endure prolonged diagnostic journeys and invasive testing, yet many remain without a molecular diagnosis. The Australian Genomics Mitochondrial Flagship, comprising clinicians, diagnostic, and research scientists, conducted a prospective national study to identify the diagnostic utility of singleton genomic sequencing using blood samples.

Methods: A total of 140 children and adults living with suspected MD were recruited using modified Nijmegen criteria (MNC) and randomized to either exome + mitochondrial DNA (mtDNA) sequencing or genome sequencing.

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Variants that alter gene splicing are estimated to comprise up to a third of all disease-causing variants, yet they are hard to predict from DNA sequencing data alone. To overcome this, many groups are incorporating RNA-based analyses, which are resource intensive, particularly for diagnostic laboratories. There are thousands of functionally validated variants that induce mis-splicing; however, this information is not consolidated, and they are under-represented in ClinVar, which presents a barrier to variant interpretation and can result in duplication of validation efforts.

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The incorporation of phosphorus and boron into [3]dendralenes provides access to heavy heterodendralenes, a new class of main-group precursor to "doped" polycyclic hydrocarbons. []Dendralenes are a core class of unsaturated hydrocarbons built from geminally connected polyenes; the resulting arrangement of conjugated C═C bonds enables []dendralenes to undergo reactions that allow rapid access to complex polycyclic compounds. The increasing technological and synthetic importance of main-group-containing polycyclic hydrocarbons and their analogues makes new routes to access such systems highly attractive.

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  • * Three independent raters analyzed subjects' foot movements over multiple days while employing a four-segment foot model and performed statistical analysis to evaluate variability and differences by foot type during the stance phase of gait.
  • * Findings indicated that while static measures showed significant differences among foot types, the MFM's ability to detect dynamic differences was limited, particularly with respect to certain movements like the hallux to forefoot range of motion; thus, its sensitivity for identifying variations between pathologic and non-pathologic foot
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  • Recent research indicates that precision medicine is effective in developing new treatment options for childhood cancers, specifically for high-risk patients with a low expected cure rate.
  • In a study involving 384 patients, 67% received recommendations for precision-guided treatment (PGT), leading to a 36% objective response rate and better 2-year progression-free survival compared to standard treatments.
  • The most significant benefits from PGT were observed in cases targeting specific genetic markers and when treatment started before disease progression.
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Genomic information is increasingly used to inform medical treatments and manage future disease risks. However, any personal and societal gains must be carefully balanced against the risk to individuals contributing their genomic data. Expanding our understanding of actionable genomic insights requires researchers to access large global datasets to capture the complexity of genomic contribution to diseases.

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  • This study aimed to assess how reanalyzing genomic data can help identify diagnoses in dystonia patients who previously had inconclusive results.
  • Initially, only 11.7% of 111 patients received a molecular diagnosis from the first genome sequencing in 2019, but reanalysis between 2020 and 2023 increased that rate to 18.9%.
  • The findings suggest that regularly revisiting genomic data can lead to more genetic diagnoses, which can be crucial for better understanding and managing the condition for patients and their families.
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  • Genetic sequencing technologies are rapidly advancing, leading to significant changes in both research and clinical practices, particularly through next-generation sequencing (NGS) which is more efficient than traditional methods.
  • The authors detail various short-read sequencing techniques, including sequencing by synthesis and nanoball sequencing, as well as the benefits of third-generation long-read sequencing, which addresses limitations of short-read methods.
  • Emerging technologies like nanopore sequencing and microscopy-based techniques are paving the way for personalized medical care, especially in treating hematological disorders.
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C-H metalation is the most efficient method to prepare aryl-zinc and -aluminium complexes that are ubiquitous nucleophiles. Virtually all C-H metalation routes to form Al/Zn organometallics require stoichiometric, strong Brønsted bases with no base-catalyzed reactions reported. Herein we present a catalytic in amine/ammonium salt (EtN/[(EtN)H]) C-H metalation process to form aryl-zinc and aryl-aluminium complexes.

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There is an increasing demand for the return of raw genomic data by research participants in translational genomic research. This article discusses the scope and application of privacy and freedom of information legislative provisions in Australia. Whether there is a right to access a copy of such data under Australian privacy legislation is contingent on whether raw genomic data can identify an individual and this article explores the opportunities for genomic data to be linked to individuals.

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To better understand how tumours develop, identify prognostic biomarkers and find new treatments, researchers have generated vast catalogues of cancer genome data. However, these datasets are complex, so interpreting their important features requires specialized computational skills and analytical tools, which presents a significant technical challenge. To address this, we developed CRUX, a platform for exploring genomic data from cancer cohorts.

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  • * A study tested 125 patient samples against 126 anticancer drugs, finding strong correlations between specific genomic alterations and effective drug responses, indicating potential targeted treatments.
  • * The integration of high-throughput screening (HTS) with molecular profiling can enhance precision medicine by identifying effective biomarkers and drug combinations for high-risk pediatric cancer patients.
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Precision medicine programs aim to utilize novel technologies to identify personalized treatments for children with cancer. Delivering these programs requires interdisciplinary efforts, yet the many groups involved are understudied. This study explored the experiences of a broad range of professionals delivering Australia's first precision medicine trial for children with poor-prognosis cancer: the PRecISion Medicine for Children with Cancer (PRISM) national clinical trial of the Zero Childhood Cancer Program.

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Autosomal dominant polycystic kidney disease (ADPKD) is the most common monogenic cause of kidney failure and is primarily associated with PKD1 or PKD2. Approximately 10% of patients remain undiagnosed after standard genetic testing. We aimed to utilise short and long-read genome sequencing and RNA studies to investigate undiagnosed families.

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Background: Germline genome sequencing in childhood cancer precision medicine trials may reveal pathogenic or likely pathogenic variants in cancer predisposition genes in more than 10% of children. These findings can have implications for diagnosis, treatment, and the child's and family's future cancer risk. Understanding parents' perspectives of germline genome sequencing is critical to successful clinical implementation.

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  • Cadmium (Cd) is a toxic heavy metal linked to severe fetal health issues, including growth restriction and malformations, with unclear mechanisms behind these effects.
  • Researchers used a mouse model to investigate how Cd impacts gene expression in the placenta, revealing a significant increase in a specific long non-coding RNA after Cd exposure.
  • The study suggests that this lncRNA may influence gene expression related to oxidative stress responses, highlighting a potential pathway through which Cd causes negative outcomes in fetal development.
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Predicting the impact of coding and noncoding variants on splicing is challenging, particularly in non-canonical splice sites, leading to missed diagnoses in patients. Existing splice prediction tools are complementary but knowing which to use for each splicing context remains difficult. Here, we describe Introme, which uses machine learning to integrate predictions from several splice detection tools, additional splicing rules, and gene architecture features to comprehensively evaluate the likelihood of a variant impacting splicing.

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Facioscapulohumeral muscular dystrophy (FSHD) is an incurable myopathy linked to the over-expression of the myotoxic transcription factor DUX4. Targeting DUX4 is the leading therapeutic approach, however, it is only detectable in 0.1-3.

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