In a significant research advancement that may help inform treatment strategies for millions of patients worldwide, a research team led by Prof. Fei-Yuan Hsiao of National Taiwan University and Prof. Liang-Kung Chen of National Yang-Ming Chiao Tung University has provided important new insights into a critical clinical question: "Which diabetes medications may offer better lung outcomes for patients with both diabetes and COPD—and does patient frailty matter?"
This study, published in eClinicalMedicine, represents an important contribution to personalized medicine and may influence clinical practice in the field.
With the coexistence of type 2 diabetes and chronic obstructive pulmonary disease (COPD) posing increasingly complex challenges in our aging society, the research team went deeper and broader than ever before, conducting a massive nationwide analysis of Taiwan's comprehensive health insurance database.
What distinguished this work was its unprecedented focus on frailty-stratified effectiveness. The research team seamlessly integrated Taiwan's National Health Insurance database—covering over 99% of the population—to analyze patients aged 40 and older with both conditions who initiated different diabetes medications between 2017 and 2020.
Using cutting-edge epidemiological methods, the researchers were able to examine the actual impact of different diabetes drugs on respiratory outcomes across various frailty levels.
The results were revealing: SGLT2 inhibitors appeared to outperform traditional DPP-4 inhibitors in reducing composite pulmonary endpoints overall, while showing comparable outcomes to newer GLP-1 receptor agonists.
Importantly, the study revealed that effectiveness may vary meaningfully by frailty status—fit or mildly frail patients appeared to benefit most from decreased risk of COPD hospitalization, while decreased risk of pneumonia hospitalization was observed across most frailty categories.
For patients, this suggests the potential for more personalized treatment strategies based on their individual frailty profile. For clinicians, it offers important evidence-based insights for selecting diabetes medications that may provide dual benefits—glucose control and respiratory protection—particularly relevant as populations age and multimorbidity becomes increasingly common.
"This study provides crucial evidence for clinicians treating patients with both diabetes and COPD," said corresponding authors Prof. Fei-Yuan Hsiao and Prof. Liang-Kung Chen. "The findings suggest that SGLT2 inhibitors and GLP-1 receptor agonists may be preferred treatment options, with effectiveness influenced by patients' frailty status."
The study's comprehensive methodology and large-scale population-based design provide robust evidence that can be applied across different health care settings worldwide. At a time when health care systems globally are grappling with the dual burden of diabetes and respiratory diseases in aging populations, this research provides important new evidence: clearer insights for treatment decisions based on real-world data.
This publication reinforces Taiwan's growing leadership in pharmacoepidemiology and geriatric medicine research. The findings add to the growing body of evidence suggesting that SGLT2 inhibitors may offer benefits beyond glucose control, including cardiovascular and now potentially respiratory outcomes—making them potentially valuable tools for addressing multiple health challenges in complex patient populations.
The research team continues to pioneer research in medication effectiveness across diverse patient populations, with a focus on how individual patient characteristics influence treatment outcomes—groundbreaking work that is redefining the frontiers of personalized diabetes care and respiratory medicine.
More information: Lin-Chieh Meng et al, Frailty-stratified effectiveness of SGLT2 inhibitors versus DPP-4 inhibitors and GLP-1 receptor agonists on pulmonary outcomes in type 2 diabetes: a nationwide cohort study, eClinicalMedicine (2025). DOI: 10.1016/j.eclinm.2025.103332
Journal information: EClinicalMedicine