1.Impact of Glycemic Burden on Renal Filtration Decline and Proteinuria in Type 1 Diabetes Mellitus
Sian Lin Toh ; Chee Keong See ; Wei Hong Chin
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):39-
Introduction:
Diabetic nephropathy is a major complication of type 1
diabetes mellitus (T1DM) and a leading cause of endstage renal disease. This study aims to correlate long-term
glycemic control and disease duration with renal decline,
measured via estimated glomerular filtration rate (eGFR)
and urinalysis proteinuria.
Methodology:
A retrospective cohort study was conducted among 15
patients with T1DM at Hospital Bentong. Independent
variables were 3-year mean glycated hemoglobin A1c
(HbA1c) and duration of diabetes. Dependent variables
included the change in eGFR derived from baseline and
latest serum creatinine (calculated using the CKD-EPI 2021
equation), and the shift in urine protein severity, mapped
to an ordinal scale, over a 3-year follow-up. Multivariate
linear regression and Spearman’s rank correlation were
utilized for analysis.
Results:
The cohort consisted of 5 male patients and 10 female
patients with a mean initial presentation HbA1c of 11.4%, a
mean 3-year HbA1c of 9.15%, and a median disease duration
of 11 years. Baseline eGFR was preserved (mean 117.15 mL/
min/1.73 m²). Regression analysis revealed that for every 1%
increase in mean HbA1c, eGFR declined significantly by 9.6
mL/min/1.73 m² (p = 0.002). Furthermore, each additional
year of disease duration independently reduced eGFR by
1.1 units (p = 0.008). Spearman validation confirmed the
strong negative correlation between HbA1c and eGFR (Rho
= -0.664, p = 0.006). Conversely, the correlation between
3-year mean HbA1c and worsening proteinuria was not
statistically significant (Rho = -0.067, p = 0.827), and patient
gender did not significantly impact progression (p = 0.129).
Conclusion
Poor long-term glycemic control and longer duration of
diabetes mellitus are strong independent predictors of
decline in functional glomerular filtration in T1DM. While
worsening proteinuria may not be detected during a short
3-year window using a standard urinalysis (UFEME), a
more sensitive test such as Urine Albumin-to-Creatinine
Ratio may better detect early structural kidney damage.
Diabetes Mellitus, Type 1
;
Proteinuria
2.Singapore consensus statements on the management of obstructive sleep apnoea.
Leong Chai LEOW ; Chuen Peng LEE ; Sridhar VENKATESWARAN ; Michael Teik Chung LIM ; Oon Hoe TEOH ; Ruth CHANG ; Yam Cheng CHEE ; Khai Beng CHONG ; Ai Ping CHUA ; Joshua GOOLEY ; Hong Juan HAN ; Nur Izzianie KAMARUDDIN ; See Meng KHOO ; Lynn Huiting KOH ; Shaun Ray Han LOH ; Kok Weng LYE ; Mark IGNATIUS ; Yingjuan MOK ; Jing Hao NG ; Thun How ONG ; Chu Qin PHUA ; Rui Ya SOH ; Pei Rong SONG ; Adeline TAN ; Alvin TAN ; Terry TAN ; Jenny TANG ; David TAY ; Jade TAY ; Song Tar TOH ; Serene WONG ; Chiang Yin WONG ; Mimi YOW
Annals of the Academy of Medicine, Singapore 2025;54(10):627-643
INTRODUCTION:
Obstructive sleep apnoea (OSA) is common in Singapore, with moderate to severe OSA affecting around 30% of residents. These consensus statements aim to provide scientifically grounded recommendations for the management of OSA, standar-dise the management of OSA in Singapore and promote multidisciplinary collaboration.
METHOD:
An expert panel, which was convened in 2024, identified several areas of OSA management that require guidance. The expert panel reviewed the current literature and developed consensus statements, which were later independently voted on using a 3-point Likert scale (agree, neutral or disagree). Consensus (total ratings of agree and neutral) was set a priori at ≥80% agreement. Any statement not reaching consensus was excluded.
RESULTS:
The final consensus included 49 statements that provide guidance on the screening, diagnosis and management of adults with OSA. Additionally, 23 statements on the screening, diagnosis and management of paediatric OSA achieved consensus. These 72 consensus statements considered not only the latest clinical evidence but also the benefits and harms, resource implications, feasibility, acceptability and equity impact of the recommendations.
CONCLUSION
The statements presented in this paper aim to guide clinicians based on the most updated evidence and collective expert opinion from sleep specialists in Singapore. These recommendations should augment clinical judgement rather than replace it. Management decisions should be individualised, taking into account the patient's clinical characteristics, as well as patient and caregiver concerns and preferences.
Humans
;
Sleep Apnea, Obstructive/diagnosis*
;
Singapore
;
Consensus
;
Adult
3.Nutrition support practices for critically ill patients with severe acute respiratory syndrome coronavirus-2: A multicentre observational study in Singapore.
Charles Chin Han LEW ; Puay Shi NG ; Kok Wah WONG ; Ser Hon PUAH ; Cassandra Duan Qi LIM ; Geetha KAYAMBU ; Andrew Yunkai LI ; Chee Hong TOH ; Jonathen VENKATACHALAM ; Amartya MUKHOPADHYAY
Annals of the Academy of Medicine, Singapore 2022;51(6):329-340
INTRODUCTION:
To improve the nutritional care and resource allocation of critically ill patients with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), we described their characteristics, treatment modalities and clinical outcomes, and compared their nutrition interventions against the American Society for Parenteral and Enteral Nutrition (ASPEN) recommendations.
METHODS:
This was a retrospective observational study conducted in 5 tertiary hospitals in Singapore. Characteristics, treatment modalities, clinical outcomes and nutrition interventions of critically ill patients with SARS-CoV-2 who received enteral and parenteral nutrition were collected between January and May 2020.
RESULTS:
Among the 83 critically ill patients with SARS-CoV-2, 22 (28%) were obese, 45 (54%) had hypertension, and 21 (25%) had diabetes. Neuromuscular blockade, prone therapy and dialysis were applied in 70% (58), 47% (39) and 35% (29) of the patients, respectively. Refeeding hypophosphataemia and hospital mortality occurred respectively in 6% (5) and 18% (15) of the critically ill patients with SARS-CoV-2. Late enteral nutrition and cardiovascular comorbidities were associated with higher hospital mortality (adjusted relative risk 9.00, 95% confidence interval [CI] 2.25-35.99; 6.30, 95% CI 1.15-34.40, respectively). Prone therapy was not associated with a higher incidence of high gastric residual volume (≥250mL). The minimum caloric (15kcal/kg) and protein (1.2g/kg) recommendations of ASPEN were achieved in 54% (39) and 0% of the patients, respectively.
CONCLUSION
The high obesity prevalence and frequent usage of neuromuscular blockade, prone therapy, and dialysis had considerable implications for the nutritional care of critically ill patients with SARS-CoV-2. They also did not receive adequate calories and protein. More audits should be conducted to refine nutritional interventions and guidelines for this ever-evolving disease.
COVID-19/therapy*
;
Critical Illness/therapy*
;
Humans
;
Nutritional Support
;
SARS-CoV-2
;
Singapore/epidemiology*
;
United States
5.A unique pair of monozygotic twins with concordant clear cell renal cell carcinoma: a case report.
Min Han TAN ; Jasmine YANG ; Hwei Ling TAN ; Chin Fong WONG ; Puay Hoon TAN ; Hong Gee SIM ; Peter ANG ; Chee Keong TOH ; Miah Hiang TAY ; Eileen POON ; Aik Seng OOI ; Bin Tean TEH
Annals of the Academy of Medicine, Singapore 2010;39(1):61-63
INTRODUCTIONGenetic predisposition to clear cell renal cell carcinoma (ccRCC) has been linked to disorders such as von Hippel-Lindau (VHL) syndrome. While twin research is a classic approach for elucidating genetic and environmental contributions to disease, no monozygotic twin-pair concordant for ccRCC in the absence of VHL syndrome has been previously reported in the literature or in major twin registries.
CLINICAL PICTUREWe describe a unique monozygotic twin-pair concordant for ccRCC, with discordant but early ages of onset of 25 and 38 respectively. Cytogenetic studies and direct sequencing for VHL gene mutations in the second twin proved unremarkable.
CONCLUSIONSThis is the fi rst reported case of monozygotic twins concordant for ccRCC in the absence of VHL gene mutation. The early yet discordant, age of onset of disease in both twins suggests both genetic and environmental contributions to ccRCC.
Adult ; Carcinoma, Renal Cell ; genetics ; pathology ; Diseases in Twins ; genetics ; pathology ; Humans ; Kidney Neoplasms ; genetics ; pathology ; Male ; Twins, Monozygotic ; von Hippel-Lindau Disease ; genetics


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