1.Hereditary versus sporadic medullary thyroid carcinoma: A single tertiary centre cohort study
Qin Zhi Lee ; Raja Nurazni Raja Azwan ; Chin Voon Tong ; Zanariah Hussein
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):9-
Introduction:
Medullary thyroid carcinoma (MTC) comprises sporadic and hereditary forms, the latter commonly associated with
multiple endocrine neoplasia type 2 (MEN2) which is identifiable through genetic screening of germline RET protooncogene. We compared the clinicopathological features and outcomes of hereditary and sporadic MTC in our single
centre.
Methodology:
We conducted a retrospective audit of patients with MTC from 2000 to 2026. Patients were classified as either hereditary
or sporadic based on genetic testing and/or family history of MTC/MEN2A syndrome. Variables analyzed included age
at diagnosis, mode of presentation, pre-operative calcitonin, tumor size, lymph node (LN) involvement, post-operative
biochemical cure, repeat surgery and presence of structural residual/recurrent disease.
Results:
A total of 57 patients were included (18 hereditary [31.6%], 39 presumed sporadic [68.4%]) with a median follow-up of
7.5 years (IQR 1.5–12.4). Hereditary MTC was diagnosed at a significantly younger age than sporadic MTC (33.0 vs. 44.7
years, p = 0.010) where 33% of the cases were diagnosed via screening detection whereas sporadic MTC more commonly
presented with symptomatic neck swelling (84.6% vs. 50.0%, p = 0.008). There were no significant differences in median
pre-operative calcitonin (513.5 vs. 1148.0 pg/mL, p = 0.101), tumor size (24.5 vs. 22.5 mm, p = 0.301), or LN involvement
(41.7% vs. 61.5%, p = 0.307) between hereditary and sporadic MTC. Long-term outcomes were also comparable, with
no differences in biochemical status, need for repeat surgery or residual/recurrent structural disease.
Conclusion
Hereditary MTC presents earlier and is more frequently detected due to screening, whereas sporadic MTC often presents
symptomatically. Long-term outcomes are not primarily determined by hereditary status alone. Early access to RET
mutation testing with a view to initiating prophylactic treatments rather than post detection surgery may improve
disease burden.
Thyroid Neoplasms
;
Cohort Studies
2.Recurrent Diabetic Ketoacidosis: Predictors and Clinical Outcomes in a 24-Year Retrospective Cohort
Liang Wei Wong ; Lisa Mohamed Nor ; Raja Nurazni binti Raja Azwan ; Adilah Zulaikha binti Abd Latib ; Hidayatil Alimi bin Keya Nordin ; Qin Zhi Lee ; Kean Heng Lim ; Jia Ling Low ; Mohd Fyzal bin Bahrudin ; Syaza binti Izhar Hisham ; Jia Whey Jacelyn Ong ; Chin Voon Tong
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):33-34
Introduction:
Diabetic ketoacidosis (DKA) is a life-threatening complication associated with significant morbidity and healthcare
burden. Despite advances in diabetes care, recurrent
DKA remains common, often reflecting gaps in treatment
adherence and patient education. Identifying predictors
of recurrence is crucial for risk stratification and targeted
intervention.
Methodology:
We conducted a retrospective observational study of all
adult DKA admissions to a tertiary centre between 2001
and 2025. Electronic medical records were reviewed for
demographic data, biochemical parameters, precipitating
factors, and clinical outcomes. DKA was defined using standard biochemical criteria. Recurrent DKA was defined as ≥2 admissions during the study period. Factors associated
with recurrent DKA admissions were analyzed. Patients
under the age of 18 years and those with missing vital
information were excluded.
Results:
A total of 667 DKA admissions, comprising 566 patients,
were identified, of which 101 admissions (15.1%) were
recurrent, involving 65 patients. Among recurrent DKA
episodes, the most common precipitating factors were
infection (64.4%) and insulin omission (62.4%). After
multivariate analyses, patients with type 1 diabetes
mellitus (T1DM) were more likely to develop recurrent
DKA compared to those with type 2 diabetes mellitus
(aOR 4.16; 95% confidence interval [CI] 2.58–6.70; p <0.001).
Insulin omission was strongly associated with recurrent
DKA (aOR 2.29; 95% CI 1.46–3.60; p <0.001). In contrast,
baseline glycated hemoglobin and chronic kidney disease
were not significantly associated with recurrence. Diabetic
counseling during the first DKA admission did not reduce
recurrent DKA. There were no significant differences in
mortality (3.9% vs 6.2%, p = 0.524) or critical care admission
rates (40.6% vs 38.7%, p = 0.718) between recurrent and first
DKA episodes.
Conclusion
Recurrent DKA accounts for a substantial proportion of
DKA admissions and is strongly associated with insulin
omission and T1DM. Our findings suggest that recurrent
DKA is driven predominantly by behavioral and adherencerelated factors, indicating the need for multidisciplinary
interventions beyond standard inpatient counseling.
Diabetic Ketoacidosis
;
Retrospective Studies
3.Clinical and Biochemical Characteristics of Adult Diabetic Ketoacidosis: T1DM vs. T2DM
Mohd Fyzal Bahrudin ; Chin Voon Tong ; Raja Nurazni Raja Azwan ; Adilah Zulaikha Abd Latib ; idayatil Alimi Keya Nordin ; Qin Zhi Lee ; Kean Heng Lim ; Jia Ling Low ; Syaza Izhar Hisham ; Liang Wei Wong ; Jia Whey Jacelyn Ong ; Lisa Mohamed Nor ; Zanariah Hussein
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):39-40
Introduction:
The rising incidence of diabetic ketoacidosis (DKA) in type 2
diabetes mellitus (T2DM) represents a paradigm shift from
its traditional recognition as a hallmark complication of
type 1 diabetes mellitus (T1DM). However, contemporary
data comparing clinical presentation, precipitating factors,
and outcomes between these two populations remain
limited.
Methodology:
In this retrospective observational study, all adult DKA
admissions with T1DM or T2DM at a tertiary centre between
2001 and 2025 were studied. DKA was defined according
to standard biochemical criteria. Electronic medical records were reviewed to extract demographic data, biochemical
parameters, precipitating factors, management details, and
clinical outcomes of all adult DKA admission in T1DM and
T2DM. Patients aged <18 years or those with incomplete
data were excluded.
Results:
A total of 601 DKA episodes were analyzed, comprising
130 (21.6%) in patients with T1DM and 471 (78.4%) in those
with T2DM. Mean age was 26.9 ± 0.71 years for T1DM and
52.1 ± 0.7 years for T2DM. Gender distribution was balanced
(male 48.3%, female 51.7%). Mean hemoglobin A1c (HbA1c)
was 11.3 ± 0.3% in T1DM and 12.1 ± 0.2% in T2DM. Infection
was the most common precipitating factor overall (69.0%),
occurring more frequently in T2DM than in T1DM (74.7%
vs. 56.2%), followed by medication non-adherence (62.4%
vs. 43.8%). Significant differences were observed between
groups in admission pH, bicarbonate (both p <0.001), blood
ketones (p = 0.028), and HbA1c (p = 0.010), whereas anion
gap (p = 0.056) and blood glucose levels (p = 0.755) did not
differ significantly. Clinical outcomes were comparable
with respect to intensive care unit (ICU) admission rates
(40.0% in T1DM vs. 39.0% in T2DM, p = 0.779) and median
resolution time (p = 0.462). However, the median length of
hospital stay was significantly longer in T2DM (8.2 ± 0.32
vs. 5.4 ± 0.4 days; p <0.001). Overall mortality was 6.0%,
with substantially higher mortality in T2DM compared to
T1DM (7.4% vs. 0.8%, p = 0.013).
Conclusion
In this large regional series of adult DKA, most episodes
occurred in T2DM. Despite similar ICU admission rates
and time to resolution, T2DM was associated with more
frequent infection-related precipitants, longer hospital
stays, and higher mortality, underscoring the need for
targeted preventive strategies in this population.
Adult
;
Diabetes Mellitus, Type 1
;
Diabetic Ketoacidosis
;
Diabetes Mellitus, Type 2
4.Risk Assessment for Ramadan Fasting in People With Diabetes in Hospital-Based Diabetes Clinics Using the Updated 2026 IDF-DAR Risk Calculator
Raja Nurazni Raja Azwan ; Chin Voon Tong ; Lisa Mohamed Nor ; Marisa Khatijah Borhan ; Syarifah Syahirah Syed Abas ; Poh Shean Wong ; Ying Jie Tan ; Shartiyah Ismail ; Eunice Yi Chwen Lau ; Yueh Chien Kuan ; Noor Hafis Md Tob ; Shu Teng Chai ; Pei Lin Chan ; Xe Hui Lee ; Wei Wei Ng ; Jin Hui Ho ; Miza Hiryanti Zakaria ; Rabeah Md Zuki ; Wan Mohd Hafez Wan Hamzah ; Melissa Vergis ; Choon Peng Sun ; Vanusha Devaraja Pillai ; Chee Koon Low ; Shazatul Reza Mohd Redzuan ; Xin-Yi Ooi ; Siti Sanaa Wan Azman ; Deviga Lachumanan ; Saiful Shahrizal Shudim ; Zanariah Hussein
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):42-43
Introduction:
The 2021 IDF-DAR risk calculator had been previously
evaluated in multiple studies and subsequently widely
accepted and applied in clinical practice as a practical
standardized tool for patient risk stratification. Recently
updated, the 2026 IDF-DAR Risk calculator enables a more individualized, evidence-related evaluation of patientrelated and disease-related risk factors, incorporating
modern diabetes technologies, including continuous
glucose monitoring (CGM), automated insulin delivery
(AID) systems, and advanced insulin formulations to
enhance risk stratification. This tool allows medical
professionals to tailor Ramadan practices based on overall
factors toward promoting safe fasting.
Methodology:
This prospective multicentre observational study recruited
adults with Type 1 and Type 2 diabetes attending public
hospitals nationwide. People with diabetes (PwD) intending
to perform Ramadan fasting were invited to participate
and assessed using the 2026 IDF-DAR Risk Calculator in
the 6-week pre-Ramadan period between 30th January and
19th March 2026.
Results:
A total of 458 PwD were evaluated and stratified into low
(15.7%), moderate (41%), and high risk (43.3%) categories.
Most participants had Type 2 diabetes (83.6%), with 60.3%
having a disease duration exceeding 10 years and 43%
exhibiting poor glycemic control (hemoglobin A1c >9%).
Insulin therapy was used by 76.4% of participants, including
two individuals with Type 1 diabetes using AID systems.
Most participants reported no recent hypoglycemia (76.4%),
81.0% performed glucose monitoring, and 3.3% used CGM.
Severe comorbidities were uncommon, with 1.1% having
unstable macrovascular disease and 4.4% advanced chronic
kidney disease (estimated glomerular filtration rate <30).
Notably, 72.2% received structured Ramadan education.
Conclusion
Majority of PwD attending tertiary diabetes clinics were
in the moderate- to high-risk category and intended to
fast despite medical advice against fasting in some cases.
Although most participants were on insulin therapy,
hypoglycemia was low in the pre-Ramadan period.
Integration of modern technologies, advanced insulin
therapies, and structured education may support safer
fasting practices.
Risk Assessment
;
Diabetes Mellitus
;
Hospitals
;
Fasting


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