Publications by authors named "K-K Lau"

Objective: To estimate the prevalence of organ damage (damage) and flare and to examine longitudinal associations between flares and subsequent damage accrual, in patients with systemic lupus erythematosus (SLE).

Methods: Patients enrolled in the Asia Pacific Lupus Collaboration cohort with ≥3 years of prospectively captured data were studied. Flares were assessed at routine visits, while damage ((Systemic Lupus International Collaborating Clinics/American College of Rheumatology) Damage Index) was assessed annually.

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Following our previous experience with cardiac xenotransplantation of a genetically modified porcine heart into a live human, we sought to achieve improved results by selecting a healthier recipient and through more sensitive donor screening for potential zoonotic pathogens. Here we transplanted a 10-gene-edited pig heart into a 58-year-old man with progressive, debilitating inotrope-dependent heart failure due to ischemic cardiomyopathy who was not a candidate for standard advanced heart failure therapies. He was maintained on a costimulation (anti-CD40L, Tegoprubart) blockade-based immunomodulatory regimen.

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  • The study examined how mislabeled drug allergies, particularly to NSAIDs, affect stroke patients compared to the general population in Hong Kong from 2008 to 2014.
  • Patients with stroke had a higher prevalence of allergy labels for cardiovascular and diagnostic agents, impacting their treatment options and medication prescriptions.
  • Notably, those labeled with NSAID allergies were less likely to receive important medications like aspirin, faced higher mortality rates, and most could be delabeled successfully through testing.
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Glucose-6-phosphatase catalytic subunit (G6PC)1 and G6PC2 are crucial for glucose metabolism, regulating processes like glycolysis, gluconeogenesis, and glycogenolysis. Despite their structural and functional similarities, G6PC1 and G6PC2 exhibit distinct tissue-specific expression patterns, G6P hydrolysis kinetics, and physiological functions. This review provides a comprehensive overview of their enzymology and distinct roles in glucose homeostasis.

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  • Dual immune checkpoint blockade (ICB) using CTLA4 and PD-(L)1 inhibitors shows improved anti-tumor effectiveness and immune toxicity compared to PD-(L)1 inhibitors alone in advanced non-small-cell lung cancer (NSCLC) patients.
  • Patients with mutations in STK11 and/or KEAP1 genes benefit more from the combination treatment compared to those receiving only PD-(L)1 inhibitors, as shown in the POSEIDON trial.
  • The loss of KEAP1 serves as a strong predictor for the success of dual ICB, as it leads to a more favorable outcome by changing the tumor's immune environment to better engage CD4 and CD8 T cells for anti-tumor activity. *
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The year 2024 is the 20 anniversary of the discovery of activating epidermal growth factor receptor () mutations in non-small cell lung cancer (NSCLC). Since then, tremendous advances have been made in the treatment of NSCLC based on this discovery. Some of these studies have led to seismic changes in the concept of oncology research and spurred treatment advances beyond NSCLC, leading to a current true era of precision oncology for all solid tumors.

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  • A study was conducted to evaluate the effects of the proton-pump inhibitor pantoprazole on critically ill patients undergoing invasive ventilation, comparing it to a placebo.
  • The trial included 4,821 patients and found that pantoprazole significantly reduced the incidence of clinically important upper gastrointestinal bleeding compared to placebo (1.0% vs. 3.5%).
  • However, there was no significant difference in overall mortality rates at 90 days between the pantoprazole group (29.1%) and the placebo group (30.9%).
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Previous studies report an association between maternal diabetes mellitus (MDM) and attention-deficit/hyperactivity disorder (ADHD), often overlooking unmeasured confounders such as shared genetics and environmental factors. We therefore conducted a multinational cohort study with linked mother-child pairs data in Hong Kong, New Zealand, Taiwan, Finland, Iceland, Norway and Sweden to evaluate associations between different MDM (any MDM, gestational diabetes mellitus (GDM) and pregestational diabetes mellitus (PGDM)) and ADHD using Cox proportional hazards regression. We included over 3.

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  • Recent trials on cholesterol-lowering treatments have generally found that statins do not significantly increase the risk of recurrent intracerebral hemorrhage (ICH), but these results may not apply to ICH survivors who face a much higher inherent risk.
  • This study aims to investigate how LDL-C levels and statin use impact ICH risk specifically among ICH survivors and whether these effects differ based on the underlying cause of the hemorrhage.
  • The analysis involved 502 ICH survivors, focusing on their LDL-C levels and medical history to understand the relationship between cholesterol management and the likelihood of recurrent ICH.
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  • * Data from a large international cohort of 1,850 mSACQ patients revealed that reducing GCs by 1 mg/day did not increase the risk of overall or severe flares; in fact, the use of antimalarials was linked to a lower risk of flares.
  • * Tapering GCs was found to reduce the risk of damage accrual for patients starting with higher prednisolone doses (over 5 mg/day
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The persisting risk of long-term health consequences of SARS-CoV-2 infection and the protection against such risk conferred by COVID-19 vaccination remains unclear. Here we conducted a retrospective territory-wide cohort study on 1,175,277 patients with SARS-CoV-2 infection stratified by their vaccination status and non-infected controls to evaluate the risk of clinical sequelae, cardiovascular and all-cause mortality using a territory-wide public healthcare database with population-based vaccination records in Hong Kong. A progressive reduction in risk of all-cause mortality was observed over one year between patients with SARS-CoV-2 infection and controls.

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  • Visible perivascular spaces (BGPVS) are linked to cerebral small vessel disease and may signal higher future stroke risk based on a large analysis of patient data.
  • The study analyzed 7,778 participants with recent ischemic stroke or transient ischemic attack (TIA), examining the relationship between BGPVS, CSOPVS, and various health factors.
  • Results indicated that a greater burden of BGPVS correlates with higher risks of ischemic stroke but not intracranial hemorrhage, while CSOPVS showed weaker associations overall.
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The coding variant (p.Arg192His) in the transcription factor PAX4 is associated with an altered risk for type 2 diabetes (T2D) in East Asian populations. In mice, Pax4 is essential for beta cell formation but its role on human beta cell development and/or function is unknown.

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Recent studies raised concerns about the increasing use of gabapentinoids in different countries. With their potential for misuse and addiction, understanding the global consumption of gabapentinoids will offer us a platform to examine the need for any interventional policies. This longitudinal trend study utilised pharmaceutical sales data from 65 countries and regions across the world to evaluate the global trends in gabapentinoid consumption between 2008-2018.

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K channels are involved in many critical functions in lung physiology. Recently, the family of Ca-activated K channels (K) has received more attention, and a massive amount of effort has been devoted to developing selective medications targeting these channels. Within the family of K channels, three small-conductance Ca-activated K (K2) channel subtypes, together with the intermediate-conductance K3.

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The differentiation of human pluripotent stem cells into the SOX17 definitive endoderm (DE) germ layer is important for generating tissues for regenerative medicine. Multiple developmental and stem cell studies have demonstrated that Activin/Nodal signaling is the primary driver of definitive endoderm formation. Here, we uncover that the FGF2-FGFR-ERK1/2 signaling contributes to mesendoderm and SOX17 DE formation.

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Background And Objectives: Ischemic stroke despite a direct oral anticoagulant (DOAC) is increasingly common and portends a high risk of subsequent ischemic stroke. The efficacy and safety of antithrombotic regimens after the condition are unclear. We aimed to compare the outcomes of patients with ischemic stroke despite DOACs with and without an alternative antithrombotic regimen and determine the risk factors of recurrent ischemic stroke while on anticoagulation.

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Background: Major intracerebral hemorrhage (ICH) trials have largely been unable to demonstrate therapeutic benefit in improving functional outcomes. This may be partly due to the heterogeneity of ICH outcomes based on their location, where a small strategic ICH could be debilitating, thus confounding therapeutic effects. We aimed to determine the ideal hematoma volume cutoff for different ICH locations in predicting ICH outcomes.

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Background: Sex differences in the pathogenesis of hypertension exist. While gut microbiota (GM) has been associated with hypertension, it is unclear whether there are sex-linked differences in the association between GM and hypertension.

Methods: We conducted a cross-sectional study to investigate the sex differences in associations between GM characterized by shotgun sequencing, GM-derived short-chain fatty acids, and 24-hour ambulatory blood pressure in 241 Hong Kong Chinese (113 men and 128 women; mean age, 54±6 years).

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  • Researchers studied patients with certain types of strokes (IS or TIA) to find out how a brain condition called cortical superficial siderosis (cSS) affects their risk of having more strokes in the future.
  • They looked at data from a large group of patients and found that those with cSS had a higher chance of having more strokes than those without it.
  • Patients with cSS who took both types of blood-thinning medicines had an even higher risk of severe strokes and intracranial hemorrhage (bleeding in the brain).
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Lung squamous cell carcinoma (LUSC) represents a major subtype of lung cancer with limited treatment options. KMT2D is one of the most frequently mutated genes in LUSC (>20%), and yet its role in LUSC oncogenesis remains unknown. Here, we identify KMT2D as a key regulator of LUSC tumorigenesis wherein Kmt2d deletion transforms lung basal cell organoids to LUSC.

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Background: Intracerebral hemorrhage (ICH) survivors are at high risk for recurrent stroke and cardiovascular events. Blood pressure (BP) control represents the most potent intervention to lower these risks, but optimal treatment targets in this patient population remain unknown. We sought to determine whether survivors of ICH achieving more intensive BP control than current guideline recommendations (systolic BP <130 mmHg and diastolic BP <80 mmHg) were at lower risk of major adverse cardiovascular and cerebrovascular events and mortality.

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Background: Current guidelines recommend using direct oral anticoagulants (DOACs) over warfarin in patients with atrial fibrillation (AF), but head-to-head trial data do not exist to guide the choice of DOAC.

Objective: To do a large-scale comparison between all DOACs (apixaban, dabigatran, edoxaban, and rivaroxaban) in routine clinical practice.

Design: Multinational population-based cohort study.

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Squamous cell lung cancers (lung squamous cell carcinomas [LUSCs]) are associated with high mortality and a lack of therapies specific to this disease. Although recurrent molecular aberrations are present in LUSCs, efforts to develop targeted therapies against receptor tyrosine kinases, signaling transduction, and cell cycle checkpoints in LUSCs were met with significant challenges. The present therapeutic landscape focuses on epigenetic therapies to modulate the expression of lineage-dependent survival pathways and undruggable oncogenes.

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A 57-year-old man with nonischemic cardiomyopathy who was dependent on venoarterial extracorporeal membrane oxygenation (ECMO) and was not a candidate for standard therapeutics, including a traditional allograft, received a heart from a genetically modified pig source animal that had 10 individual gene edits. Immunosuppression was based on CD40 blockade. The patient was weaned from ECMO, and the xenograft functioned normally without apparent rejection.

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