1.Singapore Myeloma Study Group consensus guidelines for the management of patients with newly diagnosed multiple myeloma.
Sanjay DE MEL ; Allison Cy TSO ; Cinnie Y SOEKOJO ; Melissa G OOI ; Chi Ching LIM ; Constance TEO ; Yun Xin CHEN ; Melinda TAN ; Aditi MANJERI ; Zhao Yuan LEE ; Daryl TAN ; Liang King LEE ; Ling CAO ; Yeow Tee GOH ; Chandramouli NAGARAJAN ; Wee Joo CHNG
Annals of the Academy of Medicine, Singapore 2025;54(9):561-584
2.Consensus guidelines for the management of treatment-naïve chronic lymphocytic leukaemia in Singapore (2024).
Yeow Tee GOH ; Yvonne LOH ; Esther CHAN ; Yuh Shan LEE ; Venkata Sreekanth SAMPATH ; Daryl TAN ; Shin Yeu ONG ; Chandramouli NAGARAJAN
Annals of the Academy of Medicine, Singapore 2024;54(1):36-52
INTRODUCTION:
Chronic lymphocytic leukaemia (CLL) has a heterogeneous disease course and a variable preva-lence across populations. Appropriate management for achieving optimal outcomes requires consideration of multiple factors, including disease-related factors like genomic alterations, patient characteristics and fitness, availability and access to treatments, and logistics/cost. This review aims to provide comprehen-sive and pragmatic recommendations for the management of treatment-naïve (TN) CLL that are relevant to Singapore's clinical context.
METHOD:
Clinical consensus statements were developed by an expert panel of haematologists from Singapore through a 2-round modified Delphi process. Statements were drafted using recent evidence-based guidelines and published literature. Panel members reviewed draft statements, provided anonymised feedback and proposed modifications where relevant. A physical meeting was held to facilitate discussion, voting and endorsement of the final consensus statements.
RESULTS:
The final consensus included 15 statements covering major TN CLL patient subsets. The recommendations highlight the importance of molecular testing for key biomarkers, where available/accessible, to guide initial therapy. Due to the superior efficacy of targeted agents (Bruton's tyrosine kinase inhibitors [BTKis] and B-cell lymphoma 2 inhibitors [BCL2is]) these are favoured over standard chemotherapy or chemotherapy-immunotherapy, especially for patients with del(17p) or TP53 mutation, and less fit patients.
CONCLUSION
These consensus statements provide practical recommendations for the current manage-ment of TN CLL patients in Singapore and similar healthcare systems based on up-to-date evidence. Regular updates to treatment guidelines are important to ensure responsiveness to emerging evidence and evolving clinical practices and to improve patient outcomes and quality of life.
Humans
;
Consensus
;
Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis*
;
Singapore
3.Neutrophil gelatinase-associated lipocalin: a biochemical marker for acute kidney injury and long-term outcomes in patients presenting to the emergency department.
Kah Hui Brian TEO ; Swee Han LIM ; Ying HAO ; Yin Keong Daryl LO ; Ziwei LIN ; Manish KAUSHIK ; Chieh Suai TAN ; Mohammed Zuhary THAJUDEEN ; Choon Peng JEREMY WEE
Singapore medical journal 2023;64(8):479-486
INTRODUCTION:
Creatinine has limitations in identifying and predicting acute kidney injury (AKI). Our study examined the utility of neutrophil gelatinase-associated lipocalin (NGAL) in predicting AKI in patients presenting to the emergency department (ED), and in predicting the need for renal replacement therapy (RRT), occurrence of major adverse cardiac events (MACE) and all-cause mortality at three months post visit.
METHODS:
This is a single-centre prospective cohort study conducted at Singapore General Hospital (SGH). Patients presenting to SGH ED from July 2011 to August 2012 were recruited. They were aged ≥21 years, with an estimated glomerular filtration rate <60 mL/min/1.73 m2, and had congestive cardiac failure, systemic inflammatory response syndrome or required hospital admission. AKI was diagnosed by researchers blinded to experimental measurements. Serum NGAL was measured as a point-of-care test.
RESULTS:
A total of 784 patients were enrolled, of whom 107 (13.6%) had AKI. Mean serum NGAL levels were raised (P < 0.001) in patients with AKI (670.0 ± 431.9 ng/dL) compared with patients without AKI (490.3 ± 391.6 ng/dL). The sensitivity and specificity of NGAL levels >490 ng/dL for AKI were 59% (95% confidence interval [CI] 49%-68%) and 65% (95% CI 61%-68%), respectively. Need for RRT increased 21% per 100 ng/dL increase in NGAL (P < 0.001), whereas odds of death in three months increased 10% per 100 ng/dL increase in NGAL (P = 0.028). No clear relationship was observed between NGAL levels and MACE.
CONCLUSION
Serum NGAL identifies AKI and predicts three-month mortality.
Humans
;
Lipocalin-2
;
Prospective Studies
;
Lipocalins
;
Proto-Oncogene Proteins
;
Acute-Phase Proteins
;
Biomarkers
;
Acute Kidney Injury/diagnosis*
;
Emergency Service, Hospital
;
Predictive Value of Tests
4.The impact of covid-19 pandemic on urology residency training programs in the Philippines: A descriptive study.
Daryl K. Koa ; Alfredo Uy Jr. ; Eli Paul F. Madrona ; Rodney M. Del Rio ; Meliton Alpas III ; Karl Marvin M. Tan ; Romeo Lloyd T. Romero ; Ralph Rabanal ; Ryan Josef Tuazon ; Jan Ernest Guy G. Yadao
Philippine Journal of Urology 2021;31(1):49-54
OBJECTIVE:
To provide an overview on the impact of healthcare disruption by the COVID-19 pandemic to urology training programs in the Philippines.
METHODS:
A survey questionnaire was used in collaboration with the study done by Rosen, et al. last May 2020. Telephone survey of the study population was done determining the status of resident staffing, workload, health/wellness, and didactics. Numerical and categorical data were analyzed and descriptive statistics are provided.
RESULTS:
All the observations on resident time in the workplace, including assignment to teams (81%), redeployment responses (55-97%), and remote clinical work (65%) were significant. Fifty one percent of residents have decreased research load. Eighty one percent have didactics in small groups. Fifty-five percent have 1 to 2 Video-based learning/conferences per week (p=0.007) followed by those with 3-4 with 98% (p=0.120) and those with >5 with only 6% (p=0.729). For Resident health and wellness, 87% of the residents were exposed to COVID-positive patients, but only 8% of residents were COVID positive (p=0.591). Lastly, 59% of the participants do not have access to wellness programs.
CONCLUSION
Data from respondents revealed significant changes in the different aspects of the present study. Urology residents spent more time away from their specialties, and have been re-deployed to COVID-19 floors. Ambulatory services, conferences, educational lectures have mostly shifted to virtual platforms. Resident concerns for COVID-19 exposure have been addressed properly; however, wellness programs have not been widely available for residents. As a first national survey, the present study may give significant insights on program changes and may be used as preliminary data for future studies.
Philippines
5.The use of tissue fiducial markers in improving the accuracy of post-prostatectomy radiotherapy
Michael CHAO ; Huong HO ; Daryl Lim JOON ; Yee CHAN ; Sandra SPENCER ; Michael NG ; Jason WASIAK ; Nathan LAWRENTSCHUK ; Kevin MCMILLAN ; Shomik SENGUPTA ; Alwin TAN ; George KOUFOGIANNIS ; Margaret COKELEK ; Farshad FOROUDI ; Tristan Scott KHONG ; Damien BOLTON
Radiation Oncology Journal 2019;37(1):43-50
PURPOSE: The aim of this retrospective study was to investigate the use of a radiopaque tissue fiducial marker (TFM) in the treatment of prostate cancer patients who undergo post-prostatectomy radiotherapy (PPRT). TFM safety, its role and benefit in quantifying the set-up uncertainties in patients undergoing PPRT image-guided radiotherapy were assessed. MATERIALS AND METHODS: A total of 45 consecutive PPRT patients underwent transperineal implantation of TFM at the level of vesicourethral anastomosis in the retrovesical tissue prior to intensity-modulated radiotherapy. Prostate bed motion was calculated by measuring the position of the TFM relative to the pelvic bony anatomy on daily cone-beam computed tomography. The stability and visibility of the TFM were assessed in the initial 10 patients. RESULTS: No postoperative complications were recorded. A total of 3,500 images were analysed. The calculated prostate bed motion for bony landmark matching relative to TFM were 2.25 mm in the left-right, 5.89 mm in the superior-inferior, and 6.59 mm in the anterior-posterior directions. A significant 36% reduction in the mean volume of rectum receiving 70 Gy (rV₇₀) was achieved for a uniform planning target volume (PTV) margin of 7 mm compared with the Australian and New Zealand Faculty of Radiation Oncology Genito-Urinary Group recommended PTV margin of 10 mm. CONCLUSION: The use of TFM was safe and can potentially eliminate set-up errors associated with bony landmark matching, thereby allowing for tighter PTV margins and a consequent favourable reduction in dose delivered to the bladder and rectum, with potential improvements in toxicities.
Clothing
;
Cone-Beam Computed Tomography
;
Fiducial Markers
;
Humans
;
New Zealand
;
Postoperative Complications
;
Prostate
;
Prostatectomy
;
Prostatic Neoplasms
;
Radiation Oncology
;
Radiotherapy
;
Radiotherapy, Image-Guided
;
Radiotherapy, Intensity-Modulated
;
Rectum
;
Retrospective Studies
;
Urinary Bladder
6.A randomised, double-blinded clinical study on the efficacy of multimedia presentation using an iPad for patient education of postoperative hip surgery patients in a public hospital in Singapore.
Rachel-Kim DALLIMORE ; Marxengel Leonin ASINAS-TAN ; Daryl CHAN ; Suharti HUSSAIN ; Catherine WILLETT ; Rahizan ZAINULDIN
Singapore medical journal 2017;58(9):562-568
INTRODUCTIONThis study compared patient satisfaction and recall of physiotherapy patient education among patients who had undergone hip surgery, with information presented via an iPad versus a standard paper booklet.
METHODSPatients who had undergone hip surgery joined and completed this single-centre study, which utilised a randomised parallel group design. They were randomly allocated to either Group A (received information on hip surgery physiotherapy via an iPad) or Group B (received the same information via a paper booklet). The participants were blinded to the intervention received by the other group and the testers were blinded to the intervention received by the participants. The interventions were carried out during the patients' first four postoperative physiotherapy sessions. The outcome measures were recorded using pre-validated questionnaires.
RESULTSA total of 42 participants (mean age 70 ± 12 years) were recruited. After the intervention, patients in both groups had improved recall of the information presented during patient education. However, the patients in Group A had a significantly better recall score than those in Group B (4.0 points higher, p < 0.001). The level of patient satisfaction was also significantly higher in Group A than in Group B (8.5 points higher, p < 0.001).
CONCLUSIONWhile the use of an iPad and a paper booklet both had positive outcomes for patient recall and satisfaction, the use of an iPad was found to be more effective at improving patient satisfaction and recall of physiotherapy patient education in the present study.
7.The Singapore Myeloma Study Group Consensus Guidelines for the management of patients with multiple myeloma.
Sanjay de MEL ; Yunxin CHEN ; Sathish Kumar GOPALAKRISHNAN ; Melissa OOI ; Constance TEO ; Daryl TAN ; Min Li Claire TEO ; Allison Cy TSO ; Lian King LEE ; Chandramouli NAGARAJAN ; Yeow Tee GOH ; Wee Joo CHNG
Singapore medical journal 2017;58(2):55-71
Multiple myeloma (MM) is an incurable plasma cell neoplasm with an incidence of 100 patients per year in Singapore. Major advances have been made in the diagnosis, risk stratification and treatment of MM in the recent past. The reclassification of a subset of patients with smouldering MM, based on high-risk biomarkers, and the development of the revised international staging system are among the key new developments in diagnosis and staging. The use of novel agent-based treatment has resulted in significant improvements in the survival and quality of life of many patients with MM. Determining the optimal use of proteasome inhibitors, immunomodulators and, more recently, monoclonal antibodies is an area of ongoing investigation. In this guideline, we aim to provide an overview of the management of MM, incorporating the latest developments in diagnosis and treatment.
Aged
;
Antibodies, Monoclonal
;
chemistry
;
Biomarkers, Tumor
;
Female
;
Humans
;
Male
;
Medical Oncology
;
standards
;
Middle Aged
;
Multiple Myeloma
;
diagnosis
;
therapy
;
Practice Guidelines as Topic
;
Proteasome Endopeptidase Complex
;
Quality of Life
;
Risk
;
Singapore
;
Societies, Medical
;
Stem Cell Transplantation
;
Transplantation Conditioning
8.Do Obstetric Patients Opt to Undergo General Anaesthesia to Avoid Being Conscious Despite Safer Alternatives?
Daryl Ja TAN ; Melissa Mh CHAN
Annals of the Academy of Medicine, Singapore 2017;46(6):248-251
There are various modes of anaesthesia available in the community today. This gives anaesthesiologists the freedom to select those that are safe, efficacious and most suitable for patients. However, patients may not always agree with their anaesthesiologist on the preferred mode of anaesthesia because they may have a different set of priorities, with many of them electing to have the lack of intraoperative awareness as the primary objective. Hence, disagreements between anaesthesiologists and patients may arise and could potentially disrupt doctor-patient relationship. This paper attempts to explore the possible reasons for obstetric patients championing for certain modes of anaesthesia and to provide an insight into the need for adequate patient education.
9.Validation of the Filipino-translated version of the Michigan neuropathy screening instrument among Filipino patients with diabetes mellitus seen at the Philippine General Hospital.
Daryl Jade Dagang ; Jose Danilo Diestro ; Geohana Hamoy-Jimenez ; Iris Thiele Isip-Tan ; Jose Paciano Baltazar Reyes
Journal of the ASEAN Federation of Endocrine Societies 2016;31(2):115-124
OBJECTIVES: To assess the validity of the Filipino-translated version of the Michigan Neuropathy Screening Instrument(MNSI) in screening for diabetic neuropathy among Filipino patients with diabetes mellitus using nerve conduction velocity(NCV) as gold standard and to determine the most accurate cut-off score for the diagnosis of neuropathy using MNSI.
METHODOLOGY: A cross-sectional analytic study was done among adult diabetic patients. The original MNSI Questionnaire was translated and back-translated to the Filipino language. Each patient answered the Filipino version of MNSI Questionnaire followed by a lower extremity examination done by the investigator. All patients underwent NCV as reference standard. Sensitivity and specificity of MNSI were determined.
RESULTS: We studied a total of 150 subjects. Eighty-seven (58%) were diagnosed to have diabetic neuropathy based on NCV. The sensitivity and specificity of the MNSI Questionnaire improved to 73.6% and 52.4% respectively when the cut off was reduced to ?4, whereas for the MNSI Examination, the sensitivity and specificity improved to 86.2% and 55.6% respectively when the cut off was reduced to ?1. Combining both MNSI Questionnaire and MNSI Examination further improves the sensitivity to 95.4% whereas specificity is at 39.7%.
CONCLUSION: The analyses in 150 subjects confirm that the Filipino-version of MNSI is a valid screening tool for diabetic neuropathy when compared with NCV as gold standard.
Human ; Male ; Female ; Adult ; Questionnaires ; Diabetes Mellitus ; Philippines ; Patients
10.Cytogenetic and molecular aberrations of multiple myeloma patients: a single-center study in Singapore.
Alvin Soon Tiong LIM ; Tse Hui LIM ; Karen Hsu Shien SEE ; Yit Jun NG ; Yu Min TAN ; Natasha Swee Lian CHOO ; Sherry Xin Er LIM ; Yenny YEE ; Lai Ching LAU ; Sim Leng TIEN ; Kumar SATHISH ; Daryl Chen Lung TAN
Chinese Medical Journal 2013;126(10):1872-1877
BACKGROUNDMuch is known about the cytogenetic lesions that characterize multiple myeloma (MM) patients from the USA, Europe, and East Asia. However, little has been published about the disease among Southeast Asians. The aim of this study was to determine the chromosomal abnormalities of MM patients in our Singapore population.
METHODSForty-five newly-diagnosed, morphologically confirmed patients comprising 18 males and 27 females, aged 46 - 84 years (median 65 years) were investigated by karyotyping and fluorescence in situ hybridization (FISH). FISH employing standard panel probes and 1p36/1q21 and 6q21/15q22 probes was performed on diagnostic bone marrow samples.
RESULTSThirty-four cases (75.6%) had karyotypic abnormalities. Including FISH, a total detection rate of 91.1% was attained. Numerical and complex structural aberrations were common to both hyperdiploid and non-hyperdiploid patients. Numerical gains of several recurring chromosomes were frequent among hyperdiploid patients while structural rearrangements of several chromosomes including 8q24.1 and 14q32 characterized non-hyperdiploid patients. With FISH, immunoglobulin heavy chain (IGH) gene rearrangements, especially fibroblast growth factor receptor 3 (FGFR3)/IGH and RB1 deletion/monosomy 13 were the most common abnormalities (43.4%). Amplification 1q21 was 10 times more frequent (42.5%) than del(1p36) and del(6q21).
CONCLUSIONSWe have successfully reported the comprehensive cytogenetic profiling of a cohort of newly-diagnosed myeloma patients in our population. This study indicates that the genetic and cytogenetic abnormalities, and their frequencies, in our study group are generally similar to other populations.
Aged ; Aged, 80 and over ; Chromosome Aberrations ; Cytogenetics ; Female ; Humans ; Immunoglobulin Heavy Chains ; In Situ Hybridization, Fluorescence ; Karyotyping ; Male ; Middle Aged ; Monosomy ; genetics ; Multiple Myeloma ; genetics ; pathology ; Receptor, Fibroblast Growth Factor, Type 3 ; genetics ; Retinoblastoma Protein ; genetics ; Singapore


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