Publications by authors named "Hooi L"

Article Synopsis
  • The EMPA-KIDNEY trial examined the effects of empagliflozin, an SGLT2 inhibitor, on patients with chronic kidney disease at risk for progression, assessing outcomes during and after the trial.
  • A total of 6609 patients were randomized, with 4891 participating in a follow-up period after the trial where they were observed for an additional 2 years, without trial medication but allowed to use other SGLT2 inhibitors.
  • Results showed that fewer primary outcome events (like kidney disease progression or cardiovascular death) occurred in the empagliflozin group (26.2%) compared to the placebo group (30.3%), suggesting lasting benefits of the drug even after the trial ended. *
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Background: Chronic kidney disease (CKD) continues to be a significant global public health issue. The escalating burden of CKD is probably driven by the aging population and the rising prevalence of diabetes. CKD not only adversely impacts an individual's health and well-being, but also poses significant challenge on the economy of the society.

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Introduction: The therapeutic effects of steroids in immunoglobulin A nephropathy (IgAN) global (TESTING) study reported that methylprednisolone reduces the risk of major kidney events in individuals with IgAN at high risk of disease progression compared to supportive care alone but is associated with increased serious adverse events (SAEs) primarily with full-dose therapy. The risk benefit balance of the reduced-dose methylprednisolone regimen is examined in this prespecified analysis of the reduced-dose cohort of the TESTING trial.

Methods: Between 2017 and 2019, patients with IgAN, proteinuria ≥1 g/d despite 3 months of renin-angiotensin-system blockade and estimated glomerular filtration rate (eGFR) 30 to 120 ml/min per 1.

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Diabetes mellitus is the main aetiology of end stage kidney disease (ESKD) in Malaysia. However, there may be concerns of over-reporting of diabetes mellitus as the cause of ESKD in the Malaysian Dialysis and Transplant Registry (MDTR). The objective of this audit is to assess the accuracy of data collected in the MDTR.

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Globally, colorectal cancer (CRC) is the third most frequently occurring cancer. Progression on to an advanced metastatic malignancy (metCRC) is often indicative of poor prognosis, as the 5-year survival rates of patients decline rapidly. Despite the availability of many systemic therapies for the management of metCRC, the long-term efficacies of these regimens are often hindered by the emergence of treatment resistance due to intratumoral and intertumoral heterogeneity.

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Significance Statement: SGLT2 inhibitors reduce risk of kidney progression, AKI, and cardiovascular disease, but the mechanisms of benefit are incompletely understood. Bioimpedance spectroscopy can estimate body water and fat mass. One quarter of the EMPA-KIDNEY bioimpedance substudy CKD population had clinically significant levels of bioimpedance-derived "Fluid Overload" at recruitment.

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Introduction: The incidence of acute kidney injury (AKI) among hospitalised patients has not been well studied in Malaysia.

Materials And Methods: We conducted a prospective, multicentre study in seven hospitals in West Malaysia. All the adults admitted in March 2017 fulfilling Kidney Disease Improving Global Outcomes (KDIGO) criteria for AKI were included.

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The COVID-19 pandemic has resulted in a large number of fatalities and, at present, lacks a readily available curative treatment for patients. Here, we demonstrate that unmodified red blood cell-derived extracellular vesicles (RBCEVs) can inhibit SARS-CoV-2 infection in a phosphatidylserine (PS) dependent manner. Using T cell immunoglobulin mucin domain-1 (TIM-1) as an example, we demonstrate that PS receptors on cells can significantly increase the adsorption and infection of authentic and pseudotyped SARS-CoV-2 viruses.

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Introduction: We aimed to assess opportunities for trial streamlining and the scientific impact of adjudication on kidney and cardiovascular outcomes in CKD.

Methods: We analysed the effects of adjudication of ~2100 maintenance kidney replacement therapy (KRT) and ~1300 major atherosclerotic events (MAEs) recorded in SHARP. We first compared outcome classification before versus after adjudication, and then re-ran randomised comparisons using pre-adjudicated follow-up data.

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Article Synopsis
  • * Research shows that higher levels of c-Myc and G9a in HCC patients are linked to worse survival rates, suggesting their role in tumor aggressiveness.
  • * Combining G9a inhibition with CDK9 targeting shows promise as a treatment approach, indicating that understanding these interactions could enhance therapy and diagnostics for liver cancer.
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Deregulation of MYC is among the most frequent oncogenic drivers in hepatocellular carcinoma (HCC). Unfortunately, the clinical success of MYC-targeted therapies is limited. Synthetic lethality offers an alternative therapeutic strategy by leveraging on vulnerabilities in tumors with MYC deregulation.

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Article Synopsis
  • A validated measure of vascular access (VA) function is essential for effective hemodialysis (HD), but currently, there is no reliable method to assess this outcome in clinical practice.
  • The VALID study aims to evaluate the accuracy and feasibility of measuring VA function using a defined standard over a 6-month period, comparing routine clinical assessments to expert evaluations.
  • The study will include approximately 612 participants from diverse dialysis units across multiple countries, focusing on gathering data on the effectiveness, time, and acceptability of the VA function measurement process.
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Background: The effects of empagliflozin in patients with chronic kidney disease who are at risk for disease progression are not well understood. The EMPA-KIDNEY trial was designed to assess the effects of treatment with empagliflozin in a broad range of such patients.

Methods: We enrolled patients with chronic kidney disease who had an estimated glomerular filtration rate (eGFR) of at least 20 but less than 45 ml per minute per 1.

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Aim: This study examined whether survival and causes of death differed between participants enrolled from Australia (AUS), Malaysia (MYL), and New Zealand (NZ) in extended follow-up of the Study of Heart and Renal Protection (SHARP), a randomized controlled trial (RCT) of participants with moderate to severe chronic kidney disease comparing placebo to combination therapy with Simvastatin and Ezetimibe.

Methods: All participants alive at final SHARP study visit in participating centres were eligible for inclusion. Consenting participants were re-enrolled following final SHARP Study visit and followed for 5 years.

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Article Synopsis
  • * IDentif.AI was utilized to identify and design new drug combinations from 6 antibiotics, which showed higher effectiveness in inhibiting NTM compared to current treatment regimens.
  • * Notable combinations like Levofloxacin/Rifabutin and Levofloxacin/Meropenem were found to have strong synergistic effects, suggesting that these could be the foundation for developing improved multi-drug therapies for NTM infections.
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Article Synopsis
  • Nanomedicine and drug interventions for COVID-19 have adapted during the pandemic due to evolving virus variants and declining efficacy of early therapies like antibodies.
  • This study utilized an AI platform called IDentif.AI to analyze the interactions between six experimental and current drugs against the Omicron variant, assessing both individual and combinatorial effects.
  • Findings showed that while individual drugs had limited effectiveness, certain combinations (like EIDD-1931 with YH-53) exhibited significant synergistic interactions, highlighting the potential for combination therapies to improve treatment options for COVID-19 and future pathogens.
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Background: Hepatocellular carcinoma (HCC) remains difficult to treat due to limited effective treatment options. While the proteasome inhibitor bortezomib has shown promising preclinical activity in HCC, clinical trials of bortezomib showed no advantage over the standard-of-care treatment sorafenib, highlighting the need for more clinically relevant therapeutic strategies. Here, we propose that rational drug combination design and validation in patient-derived HCC avatar models such as patient-derived xenografts (PDXs) and organoids can improve proteasome inhibitor-based therapeutic efficacy and clinical potential.

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IDentif.AI-x, a clinically actionable artificial intelligence platform, was used to rapidly pinpoint and prioritize optimal combination therapies against COVID-19 by pairing a prospective, experimental validation of multi-drug efficacy on a SARS-CoV-2 live virus and Vero E6 assay with a quadratic optimization workflow. A starting pool of 12 candidate drugs developed in collaboration with a community of infectious disease clinicians was first narrowed down to a six-drug pool and then interrogated in 50 combination regimens at three dosing levels per drug, representing 729 possible combinations.

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Aim: To describe and compare de novo arteriovenous fistula (AVF) failure rates between Australia and New Zealand (ANZ), and Malaysia.

Background: AVFs are preferred for haemodialysis access but are limited by high rates of early failure.

Methods: A post hoc analysis of 353 participants from ANZ and Malaysia included in the FAVOURED randomised-controlled trial undergoing de novo AVF surgery was performed.

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Article Synopsis
  • The study aimed to determine the effectiveness of methylprednisolone, a glucocorticoid, in preventing kidney function decline in patients with IgA nephropathy who are at high risk for such decline.
  • Conducted as a double-blind, randomized clinical trial with 503 participants across multiple countries, the results indicated that those receiving methylprednisolone had a significantly lower rate of serious kidney outcomes compared to those on placebo.
  • After 4.2 years of follow-up, the primary composite outcome occurred in 28.8% of the methylprednisolone group versus 43.1% of the placebo group, showcasing methylprednisolone's potential benefits for patients with this kidney condition.
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Hepatocellular carcinoma (HCC) is the sixth most common cancer and the second leading cause of cancer worldwide. Despite approvals of several therapeutics to treat advanced HCC in the past few years, the impact of anti-angiogenic treatment on HCC patient overall survival remains limited. This suggests there may be alternative, perfusion-independent roles of endothelial cells that support tumor progression.

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Introduction: The burden of chronic kidney disease (CKD) is growing rapidly around the world. However, there is limited information on the overall regional prevalence of CKD, as well as the variations in national prevalence within Asia. We aimed to consolidate available data and quantify estimates of the CKD burden in this region.

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Article Synopsis
  • Dietary management is crucial for patients with advanced kidney failure, yet the dietary habits of Australians, New Yorkers, and Malaysians with chronic kidney disease remain understudied.
  • In a trial involving 567 participants, it was found that Australians had a higher intake of fruits and vegetables, but only a small percentage met the recommended daily servings, while Malaysians consumed more fish.
  • The study highlights significant dietary differences between regions, indicating that cultural and economic factors influence these habits, and suggests a need for further research into barriers to optimal dietary adherence.
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Introduction: Despite optimal current care, up to 30% of individuals suffering from immunoglobulin A nephropathy (IgAN) will develop kidney failure requiring dialysis or kidney transplantation. The Therapeutic Evaluation of STeroids in IgA Nephropathy Global (TESTING) study was designed to assess the benefits and risks of steroids in people with IgAN. We report the trial design as well as the baseline characteristics of study participants.

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Rationale: α integrins, key regulators of transforming growth factor-β activation and fibrogenesis in in vivo models of pulmonary fibrosis, are expressed on abnormal epithelial cells (αβ) and fibroblasts (αβ) in fibrotic lungs.

Objectives: We evaluated multiple α integrin inhibition strategies to assess which most effectively reduced fibrogenesis in explanted lung tissue from patients with idiopathic pulmonary fibrosis.

Methods: Selective αβ and αβ, dual αβ/αβ, and multi-α integrin inhibitors were characterized for potency, selectivity, and functional activity by ligand binding, cell adhesion, and transforming growth factor-β cell activation assays.

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