Publications by authors named "Chi-Ho Leung"

Background: To examine the preference weightings for risk/benefit attributes of therapy in metastatic prostate cancer (mPC) patients, encompassing hormone-sensitive (mHSPC) and castration-resistant (mCRPC) settings.

Patients And Methods: A noninterventional cross-sectional survey employing a discrete choice experiment was conducted, recruiting 200 mHSPC and 100 mCRPC patients within 5 years of diagnosis from the urology and oncology specialty clinics between Feb 2023 and Jul 2023. Patients were randomized into 2 blocks of 9 questions, choosing 1 out of 2 medication profiles consisting 5 attributes, each with 3 levels, determined from a group interview of 5 patients.

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Objective: To investigate the impact of ageing on survival outcomes in Bacillus Calmette-Guérin (BCG) treated non-muscle invasive bladder cancer (NMIBC) patients and its synergy with adequate BCG treatment.

Method: Patients with NMIBC who received BCG treatment from 2001 to 2020 were divided into group 1 (< = 70 years) and group 2 (> 70 years). Overall Survival (OS), Cancer-Specific Survival (CSS), Recurrence-Free Survival (RFS), and Progression-Free Survival (PFS) were analyzed using the Kaplan-Meier method.

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Background: Prednisolone/prednisone coadministration with abiraterone may explain abiraterone-related increase in cardiovascular risk. We explored this postulation and glucocorticoid's association with cardiovascular risk.

Methods: Patients with prostate cancer on androgen deprivation therapy and enzalutamide, or abiraterone with 5 mg (ABI + P5) or 10 mg (ABI + P10) daily total prednisolone/prednisone were followed up for major adverse cardiovascular events (MACE).

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Background: Enzalutamide and abiraterone may differ in their immunomodulatory effects, and the prednisone coadministered with abiraterone can be immunosuppressive. This study aimed to compare the risk of different types of infection in patients with prostate cancer receiving enzalutamide or abiraterone in combination with androgen deprivation therapy.

Methods: Patients with prostate cancer receiving enzalutamide or abiraterone in addition to androgen deprivation therapy in Hong Kong between December 1999 to March 2021 were identified in this retrospective cohort study and followed up until September 2021, death, or crossover.

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Background And Objective: Conventionally, standard resection (SR) is performed by resecting the bladder tumour in a piecemeal manner. En bloc resection of the bladder tumour (ERBT) has been proposed as an alternative technique in treating non-muscle-invasive bladder cancer (NMIBC). The objective of this study is to investigate whether ERBT could improve the 1-yr recurrence rate of NMIBC, as compared with SR.

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Combination therapies in metastatic hormone-sensitive prostate cancer (mHSPC), which include the addition of an androgen receptor signaling inhibitor and/or docetaxel to androgen deprivation therapy, have been a game changer in the management of this disease stage. However, these therapies come with their fair share of toxicities and side effects. The goal of this observational study is to report drug-related adverse events (AEs), which are correlated with systemic combination therapies for mHSPC.

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Background: While the cardiovascular risks of androgen receptor pathway inhibitors have been studied, they were seldom compared directly. This study compares the risks of major adverse cardiovascular events (MACE) between enzalutamide and abiraterone among prostate cancer (PCa) patients.

Methods: Adult PCa patients receiving either enzalutamide or abiraterone in addition to androgen deprivation therapy in Hong Kong between 1 December 1999 and 31 March 2021 were identified in this retrospective cohort study.

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Objective: This population-based study examined the association between baseline uric acid (UA) and prostate cancer (PCa)-related mortality amongst PCa patients receiving androgen deprivation therapy (ADT).

Methods: Adults with PCa who received ADT in Hong Kong between December 1999 and March 2021 were identified. Patients with missing baseline UA were excluded.

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Purpose: We compare Prostate Health Index, Prostate Health Index density, and PSA density in predicting clinically significant prostate cancer in MRI-guided prostate biopsy.

Materials And Methods: This is a multicenter evaluation of prospectively maintained prostate biopsy databases at 10 urology centers. Men with Prostate Health Index and MRI-guided targeted and systematic prostate biopsy performed and without prior prostate cancer diagnosis were included.

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Purpose: 5-alpha reductase inhibitor (5ARI) reduces prostate-specific antigen (PSA) by half but its effect on prostate health index (phi) is unknown. This study aims to investigate this effect and to enable accurate interpretation of phi in men with elevated PSA and on 5ARI.

Methods: This is a prospective study evaluating the effect of finasteride on PSA, free PSA (fPSA), [ - 2]proPSA (p2PSA) and phi at 6 and 12 moths in men with PSA 4-20 ng/mL, no prior 5ARI use, and one negative prostate biopsy within 6 months before recruitment.

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Purpose: Our goal was to evaluate the effect of focal vs extended irreversible electroporation on side effects, patient-reported quality of life, and early oncologic control for localized low-intermediate risk prostate cancer patients.

Materials And Methods: Men with localized low-intermediate risk prostate cancer were randomized to receive focal or extended irreversible electroporation ablation. Quality of life was measured by International Index of Erectile Function, Expanded Prostate Cancer Index Composite questionnaire, and International Prostate Symptom Score.

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Background: Men with elevated prostate-specific antigen (PSA) and initial negative prostate biopsy may have risk of prostate cancer (PCa) in the future. The role of Prostate Health Index (phi) in determining future PCa risk has not been studied before. This study aims to investigate the role of initial phi and phi density in predicting future PCa risk in men with initial negative biopsy.

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Background: To investigate the value of machine learning(ML) in enhancing prostate cancer(PCa) diagnosis.

Methods: Consecutive systematic prostate biopsies performed from Jan 2003-June 2017 were used as the training cohort, and prospective biopsies performed from July 2017-November 2019 were used as validation cohort. Men were included if PSA was 0.

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Background: Patients with metastatic HER2/neu-positive (HER2/neu +) breast cancer (BC) often experience treatment resistance, disease recurrences and metastases. Thus, new approaches for improving the treatment of HER2/neu + BC to prevent metastatic dissemination are urgently needed. Our previous studies have shown that losartan, an angiotensin receptor blocker, increases tumor perfusion and decreases hypoxia in a number of tumor models.

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Background: To investigate the role of urine spermine and Spermine Risk Score in prediction of high-grade prostate cancer (HGPCa, ISUP grade group ≥2).

Methods: Nine hundred and five consecutive men with elevated PSA were prospectively recruited from two hospitals. Core analyses focused on consecutive men with PSA 4-20 ng/mL (n = 600).

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Background: To investigate the feasibility of a freehand transperineal (TP) systematic prostate biopsy protocol under local anaesthesia (LA) and the value of different sectors in diagnosing prostate cancer (PCa).

Methods: A total of 611 consecutive freehand TP biopsies under LA in 2 hospitals were prospectively evaluated. Cancer detection rate in each of the four different sectors (anterior, mid, posterior, basal) was recorded to evaluate the value of each sector.

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Background And Aims: EUS-guided gallbladder drainage (EUS-GBD) is a safe alternative to percutaneous cholecystostomy (PT-GBD) for acute cholecystitis. How the procedure compares with laparoscopic cholecystectomy (LC) is uncertain. The aim of the current study is to compare the outcomes of EUS-GBD with LC for acute cholecystitis.

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Background: Prostate-specific antigen (PSA) and prostate health index (PHI) have been used as biomarkers for prostate cancer detection. In this study, we aimed to evaluate the cost-effectiveness of PHI for prostate cancer detection in Chinese men.

Method: We developed a Markov model for Chinese male patient aged 50-75 years old.

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Objective: The optimal management of acute cholecystitis in patients at very high risk for cholecystectomy is uncertain. The aim of the current study was to compare endoscopic ultrasound (EUS)-guided gallbladder drainage (EUS-GBD) to percutaneous cholecystostomy (PT-GBD) as a definitive treatment in these patients under a randomised controlled trial.

Design: Consecutive patients suffering from acute calculous cholecystitis but were at very high-risk for cholecystectomy were recruited.

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Background: Little is known about the key composition of a successful tweet in urology.

Objective: To investigate for predictors of engagement with urology content on Twitter.

Design, Setting, And Participants: This was a cross-sectional study based on 2-wk Twitter data surrounding a major international urology conference.

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It is largely unknown whether lower urinary tract symptoms (LUTS) or acute retention of urine (AROU) is linked to shorter life expectancy in men. We conducted a multicenter, retrospective database analysis of patients undergoing transurethral resection of prostate (TURP) to study their relationships. Multivariate Cox regression analysis and Kaplan-Meier analysis with stratification to age and indication of TURP were performed.

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Background: There is a lack of real-world data regarding the treatment outcomes of chemohormonal therapy versus hormonal therapy alone in Chinese men with metastatic hormone-sensitive prostate cancer.

Patients And Methods: We conducted a territory-wide, multicenter, age- and prostate-specific antigen (PSA)-matched cohort study comparing chemohormonal therapy and hormonal therapy alone in Chinese men with metastatic hormone-sensitive prostate cancer. Patient and disease characteristics were reviewed.

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