1.Clinical Application of Pharmacogenomics in Stroke Management: Current Evidence and Future Directions
Keon-Joo LEE ; Minkyung KANG ; Eung Joon LEE ; Jaeseong OH ; Na-Young HAN ; Jeong-Yoon LEE ; Joo-Yeon LEE ; Soo Ji LEE ; Stéphanie DEBETTE ; Guillaume PARÉ ; Daniel WOO ; Andrew ELDEIRY ; Young Seo KIM ; Jinkwon KIM ; Jong-Moo PARK ; Juneyoung LEE ; Joohon SUNG ; Jay Chol CHOI ; Hee-Joon BAE
Journal of Stroke 2026;28(1):58-75
Pharmacogenomic variations may significantly influence responses to commonly prescribed stroke medications. Despite accumulating evidence, genetic testing has not yet been widely integrated into stroke care. This review summarizes current evidence and provides practical guidance for clinical implementation. Pharmacogenomic studies and clinical guidelines related to antiplatelet agents, anticoagulants, and statins were reviewed, with particular emphasis on East Asian populations. Substantial evidence supports genotype-guided use of clopidogrel (CYP2C19), warfarin (CYP2C9, VKORC1, CYP4F2), and statins (SLCO1B1, ABCG2). For aspirin, PTGS1/2 and PEAR1 variants have been investigated; however, current data remain insufficient for clinical application. Regarding direct oral anticoagulants (DOACs), candidate genes such as ABCB1 and CES1 demonstrate pharmacokinetic associations, though robust clinical outcome data are lacking. Distinct allele frequencies in East Asians—such as higher prevalence of CYP2C19 and ABCG2 variants—underscore the need for population-specific strategies. Beyond single-gene approaches, polygenic risk scores, pharmacogenomic panels, and integration with multi-omics data and artificial intelligence represent promising directions for personalized therapy. Pharmacogenomic testing can enhance stroke pharmacotherapy, particularly in populations with high frequencies of actionable variants. Broader implementation requires rapid testing platforms, clinician education, tailored clinical guidelines, and real-world validation of aspirin, DOACs, and multi-gene approaches. Future research should expand population-specific studies and integrate pharmacogenomics within the broader framework of precision medicine to ensure equitable clinical benefit.
2.Characteristics and risk factors of serious adverse drug reactions in older patients using the Korea Adverse Event Reporting System data: a retrospective observational study
Journal of Yeungnam Medical Science 2025;42(1):66-
Background:
Older adults are vulnerable to adverse drug reactions (ADRs) owing to physiological changes, comorbidities, and polypharmacy. Nationwide evidence in Korean is limited. This study aimed to describe the characteristics of ADRs and identify the risk factors for serious outcomes using the Korea Adverse Event Reporting System (KAERS).
Methods:
KAERS reports from 2005 to 2015 were analyzed. Eligible cases were patients aged ≥65 years with causality assessed as certain, probable, or possible for orally administered drug. Serious ADRs were defined according to International Conference on Harmonization E2A and World Health Organization-Uppsala Monitoring Centre criteria. Descriptive statistics, chi-square tests, logistic regression, and disproportionality analyses were performed.
Results:
Of the 889,997 ADR reports, 118,023 involved older patients (mean age 73.6 years; 57.9% female). Organ disorders included gastrointestinal, skin, and nervous system disorders. The common drug classes were analgesics, antimicrobials, and antituberculosis drugs. Overall, 6.1% of ADRs were serious, mainly involving the hepatic and biliary systems, respiratory, and bleeding/coagulopathy. The highest proportions of serious ADRs involved antineoplastic and antithrombotic agents. In multivariable analysis, male sex was independently associated with serious outcomes (adjusted odds ratio, 1.33; 95% confidence interval, 1.24–1.43), while age group was not. Disproportionality analysis identified notable drug-organ class signals, including antimicrobials associated with application site disorders and antineoplastic agents associated with disorders.
Conclusion
Serious ADRs comprised 6.1% of reports in older Koreans. Antineoplastic and antithrombotic agents were strongly associated with serious outcomes and male sex was an independent risk factor. These results indicate a need for safer prescriptions and improved pharmacovigilance for older patients.
3.A new performance evaluation indicator for the LEE Jong-wook Fellowship Program of Korea Foundation for International Healthcare to better assess its long-term educational impacts: a Delphi study
Journal of Educational Evaluation for Health Professions 2024;21(1):27-
Purpose:
The Dr. LEE Jong-wook Fellowship Program, established by the Korea Foundation for International Healthcare (KOFIH), aims to strengthen healthcare capacity in partner countries. The aim of the study was to develop new performance evaluation indicators for the program to better assess long-term educational impact across various courses and professional roles.
Methods:
A 3-stage process was employed. First, a literature review of established evaluation models (Kirkpatrick’s 4 levels, context/input/process/product evaluation model, Organization for Economic Cooperation and Development Assistance Committee criteria) was conducted to devise evaluation criteria. Second, these criteria were validated via a 2-round Delphi survey with 18 experts in training projects from May 2021 to June 2021. Third, the relative importance of the evaluation criteria was determined using the analytic hierarchy process (AHP), calculating weights and ensuring consistency through the consistency index and consistency ratio (CR), with CR values below 0.1 indicating acceptable consistency.
Results:
The literature review led to a combined evaluation model, resulting in 4 evaluation areas, 20 items, and 92 indicators. The Delphi surveys confirmed the validity of these indicators, with content validity ratio values exceeding 0.444. The AHP analysis assigned weights to each indicator, and CR values below 0.1 indicated consistency. The final set of evaluation indicators was confirmed through a workshop with KOFIH and adopted as the new evaluation tool.
Conclusion
The developed evaluation framework provides a comprehensive tool for assessing the long-term outcomes of the Dr. LEE Jong-wook Fellowship Program. It enhances evaluation capabilities and supports improvements in the training program’s effectiveness and international healthcare collaboration.
4.A new performance evaluation indicator for the LEE Jong-wook Fellowship Program of Korea Foundation for International Healthcare to better assess its long-term educational impacts: a Delphi study
Journal of Educational Evaluation for Health Professions 2024;21(1):27-
Purpose:
The Dr. LEE Jong-wook Fellowship Program, established by the Korea Foundation for International Healthcare (KOFIH), aims to strengthen healthcare capacity in partner countries. The aim of the study was to develop new performance evaluation indicators for the program to better assess long-term educational impact across various courses and professional roles.
Methods:
A 3-stage process was employed. First, a literature review of established evaluation models (Kirkpatrick’s 4 levels, context/input/process/product evaluation model, Organization for Economic Cooperation and Development Assistance Committee criteria) was conducted to devise evaluation criteria. Second, these criteria were validated via a 2-round Delphi survey with 18 experts in training projects from May 2021 to June 2021. Third, the relative importance of the evaluation criteria was determined using the analytic hierarchy process (AHP), calculating weights and ensuring consistency through the consistency index and consistency ratio (CR), with CR values below 0.1 indicating acceptable consistency.
Results:
The literature review led to a combined evaluation model, resulting in 4 evaluation areas, 20 items, and 92 indicators. The Delphi surveys confirmed the validity of these indicators, with content validity ratio values exceeding 0.444. The AHP analysis assigned weights to each indicator, and CR values below 0.1 indicated consistency. The final set of evaluation indicators was confirmed through a workshop with KOFIH and adopted as the new evaluation tool.
Conclusion
The developed evaluation framework provides a comprehensive tool for assessing the long-term outcomes of the Dr. LEE Jong-wook Fellowship Program. It enhances evaluation capabilities and supports improvements in the training program’s effectiveness and international healthcare collaboration.
5.A new performance evaluation indicator for the LEE Jong-wook Fellowship Program of Korea Foundation for International Healthcare to better assess its long-term educational impacts: a Delphi study
Journal of Educational Evaluation for Health Professions 2024;21(1):27-
Purpose:
The Dr. LEE Jong-wook Fellowship Program, established by the Korea Foundation for International Healthcare (KOFIH), aims to strengthen healthcare capacity in partner countries. The aim of the study was to develop new performance evaluation indicators for the program to better assess long-term educational impact across various courses and professional roles.
Methods:
A 3-stage process was employed. First, a literature review of established evaluation models (Kirkpatrick’s 4 levels, context/input/process/product evaluation model, Organization for Economic Cooperation and Development Assistance Committee criteria) was conducted to devise evaluation criteria. Second, these criteria were validated via a 2-round Delphi survey with 18 experts in training projects from May 2021 to June 2021. Third, the relative importance of the evaluation criteria was determined using the analytic hierarchy process (AHP), calculating weights and ensuring consistency through the consistency index and consistency ratio (CR), with CR values below 0.1 indicating acceptable consistency.
Results:
The literature review led to a combined evaluation model, resulting in 4 evaluation areas, 20 items, and 92 indicators. The Delphi surveys confirmed the validity of these indicators, with content validity ratio values exceeding 0.444. The AHP analysis assigned weights to each indicator, and CR values below 0.1 indicated consistency. The final set of evaluation indicators was confirmed through a workshop with KOFIH and adopted as the new evaluation tool.
Conclusion
The developed evaluation framework provides a comprehensive tool for assessing the long-term outcomes of the Dr. LEE Jong-wook Fellowship Program. It enhances evaluation capabilities and supports improvements in the training program’s effectiveness and international healthcare collaboration.
6.Self-assessment of Visual Acuity Using a Smartphone Application
Sejung KIM ; Yuhyun KIM ; Minkyung OH ; Sunghyuk MOON
Journal of the Korean Ophthalmological Society 2024;65(6):378-385
Purpose:
We evaluated the accuracy and usefulness of self-assessment of visual acuity (VA) using a smartphone application for Korean users and explored its potential application in screening eye diseases.
Methods:
In total, 52 participants aged ≥ 20 years were included in the study. Of these participants, 31 used Jin Yong-Han’s VA chart and the smartphone application to measure their distant visual acuity (DVA), whereas 21 used Han Chun-Seok’s near visual acuity chart and the application to measure their near visual acuity (NVA). The results and time required for VA measurement using both methods were compared. VA was converted to logarithm of the minimum angle of resolution (logMAR) for analysis. The voice recognition rate of the application for numbers 2-9 was assessed.
Results:
The mean NVA was 0.29 ± 0.28 using Han’s chart and 0.30 ± 0.43 using the application with no significant difference (p = 1.00). The mean DVA was 0.19 ± 5.89 using Jin's chart and 0.20 ± 0.27 using the application with no significant difference (p = 0.19). The average time spent for measuring NVA and DVA was 19 seconds (s) using Han’s and Jin's charts, whereas it was 42 and 38 s for measuring NVA and DVA using the application. The voice recognition rate of the application was 87% on average for numbers 2-9, with the highest rate for number 7 (79%) and the lowest rate for number 4 (91%).
Conclusions
Self-assessment of VA using a smartphone application exhibited similar results to conventional VA measurement methods. Although the measurement time varied, DVA and NVA could be measured at home using a smartphone, and would be particularly useful for those who have difficulty visiting a hospital.
7.Status analysis and educational needs assessment for Ghana National Ambulance Service personnel in the Oti region: a cross-sectional study
Sejun LEE ; Joseph Mawunyo APEADIDO ; Minkyung OH ; Junseok PARK ; Woo Chan JEON ; Hoon KIM
Journal of the Korean Society of Emergency Medicine 2024;35(2):154-164
Objective:
Although Ghana National Ambulance Service (NAS) personnel are being assigned to various scenes following formal training for 1 or 2 years, it is unclear if they have sufficient capacity to handle lengthy and long-distance patient transport in various emergencies. This study examined this through an analysis of referral patients in a typical rural area of Ghana and a survey of NAS personnel.
Methods:
Cases of the patient group transported by NAS personnel were abstracted from the referral patients’ chart of Worawora Government Hospital (Oti region, Ghana). These charts were analyzed according to age, sex, diagnosis, and outcome. A self-assessment survey was also conducted to estimate the confidence NAS personnel had in their abilities.
Results:
According to the records from the Worawora Government Hospital, from January to June 2021, 770 patients were admitted, including 126 obstetrics and gynecology patients (18.0%) and 124 trauma patients (17.7%). Sixty-nine patients (9.8%) who had already been transferred from lower-level hospitals were re-transferred to teaching hospitals. Among these, 33 were trauma patients (47.8%). In the survey, NAS personnel showed high confidence in the patient evaluation section, but they showed relatively low confidence in treating obstetrics and gynecology patients.
Conclusion
NAS personnel in the Oti region frequently encounter obstetrics and gynecology patients, as well as trauma patients, but they appear to lack the knowledge and skills required to transport such patients. Supplementation of knowledge and technical education in these fields is essential to ensure proper prehospital management.
8.Investigating the trends and types of electric scooter accidents related toalcohol use in South Korea: a retrospective observational study
Dongyeon LEE ; Kyung Hwan KIM ; Dong Wun SHIN ; Woochan JEON ; Minkyung OH ; Sung-Hyuk CHOI
Journal of the Korean Society of Emergency Medicine 2024;35(4):301-308
Objective:
This study analyzed the characteristics and accident patterns of electric scooter accidents using in-depth survey data from 23 hospital emergency rooms (ER) in Korea. The characteristics of accident types were examined depending on alcohol consumption.
Methods:
An in-depth investigation was conducted on ER patients involved in electric scooter accidents between 2014 and 2021. The research focused on variables such as age, time of ER visit, alcohol use, emergency room discharge outcome, injury severity, and areas of injury.
Results:
One thousand nine hundred and sixty-two electric scooter injuries were examined. The riders belonged predominantly to the 20-39 years age group (60.40%), and most were males (69.67%). Visits to the ER peaked between 6 pm and 12 am (36.29%). Alcohol was implicated in 24.52% of the accidents. Head and neck injuries occurred commonly (60.70%). The number of accidents increased from 4 to 843. Moreover, alcohol-related incidents surged annually, except during 2014-2015. The alcohol use group comprised more males than the non-alcohol use group (79.42% vs. 66.51%). Accidents occurred more commonly in the 20-39 years age group (76.92% vs. 55.03%), and a higher proportion of emergency room visits occurred between 0 am and 6 am (58.84% vs. 39.43%). Cases with severe Excess Mortality Ratio-adjusted Injury Severity Scores were more frequent (29.29% vs. 12.97%), and head and neck injuries were more common (83.78% vs. 53.21%).
Conclusion
The regulations for licensing, alcohol use, and helmet compliance should be enforced to reduce the incidence of alcohol-related electric scooter accidents in the younger population.
9.Guselkumab Treatment for Psoriasis in Bio-Naïve and Bio-Experienced Patients:Multicenter Study Based on a 1-Year Follow-Up
Seona OH ; Su Min LEE ; Byeong Chang KO ; Jung Eun SEOL ; Un Ha LEE ; Myoung-Shin KIM ; So Young JUNG ; Minkyung OH ; Hai-Jin PARK
Korean Journal of Dermatology 2023;61(5):265-274
Background:
Guselkumab is a monoclonal antibody that selectively blocks the p19 subunit of interleukin-23. It has shown good efficacy and safety profile in several clinical trials of plaque psoriasis. However, studies on the efficacy of guselkumab in patients treated with other biologics are lacking.
Objective:
We aimed to investigate the efficacy and safety profile of guselkumab in patients with moderate-to-severe plaque psoriasis. We also compared the efficacy of guselkumab between biologic-naïve (Bio-Naïve) and biologicexperienced (Bio-Ex) patients.
Methods:
This multicenter, retrospective study included 72 patients treated with guselkumab. The patients’ clinical characteristics and psoriasis area and severity index (PASI) scores were recorded at each visit. The PASI90 and PASI100 responses and mean PASI scores were compared between the Bio-Naïve and Bio-Ex groups.
Results:
Fifty-five Bio-Naïve patients and 17 Bio-Ex patients were included in the study. At week 20, there were no significant differences in the PASI90 (64.2% vs. 53.8%) and PASI100 (28.3% vs. 15.4%) responses between the groups. However, at weeks 36 and 44, the PASI90 response (week 36: 89.2% vs. 36.4% and week 44: 97.8% vs. 63.6%) and the PASI100 response (week 36: 64.9% vs. 18.2% and week 44: 68.9% vs. 27.3%) were significantly higher in the Bio-Naïve group (p<0.05). There were no differences in PASI90 and PASI100 responses between the groups in terms of other clinical characteristics and comorbidities at week 20.
Conclusion
The efficacy of guselkumab remained consistent among patients in whom other biologics had failed. However, the efficacy was slightly lower in the Bio-Ex group than in the Bio-Naïve group.
10.Successful emergency medical service training with virtual field trips using video during the COVID-19 pandemic: the Official Development Assistance Project in Uzbekistan
Ki Jong KIM ; Yoo Bin LEE ; Woo Chan JEON ; Ji Sook LEE ; Hoon KIM ; Minkyung OH ; Bo Young YOON
Korean Journal of Medical Education 2023;35(4):363-375
Purpose:
The coronavirus disease 2019 pandemic saw many restrictions on the provision of emergency medical service (EMS) training through actual field trips (AFTs), requiring a search for alternatives. This study aimed to assess trainees’ reactions to virtual field trips (VFTs) and determine the characteristics of instructional design for successful VFTs using edited videos and expert interviews.
Methods:
This study evaluated Uzbekistan trainees’ reactions to the VFT of EMS training using questionnaires in three categories: satisfaction, relevance, and engagement. Factors of satisfaction and dissatisfaction were identified through open-ended questions.
Results:
A total of 286 trainees responded to the survey during 15 educational sessions conducted from 2020 to 2022. The trainees’ responses to the VFT were positive. Overall mean scores were 4.65±0.49, 4.63±0.50, and 4.63±0.50 out of 5 points for satisfaction, relevance, and engagement, respectively. The trainees reported that the most interesting and helpful videos concerned the introduction of an EMS training curriculum and the observation of training facilities, such as the simulation centers of educational institutes. The leading causes of satisfaction were (1) authenticity of the VFTs, (2) easy-to-understand content, and (3) relevance to the job. The trainees suggested that Uzbek or Russian voice-overs would be better than subtitles in the video clip for focusing on VFT.
Conclusion
In situations where AFTs are not available, VFTs using edited videos and expert interviews are a good alternative to EMS education. Based on these results, it is possible that AFTs could be replaced by VFTs using qualified videos with designed instructions as a distance learning method under specific conditions.

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