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Original Article
General Pediatrics
Effectiveness of Kinder Lebensqualität Fragebogen (KINDL) and Children’s Somatic Symptom Inventory-24 (CSSI-24) for measuring postacute sequelae of COVID-19 in children: a diagnostic validation study
Lawrence Shih-Hsin Wu, Pei-Chi Chen, Xiao-Ling Liu, Shu-Tsen Liu, Chi-Hung Wei, Yu-Lung Hsu, Kai-Sheng Hsieh, Huan-Cheng Lai, Chien-Heng Lin, Chieh-Ho Chen, An-Chyi Chen, I-Ching Chou, Wen-Jue Soong, Hui-Ju Tsai, Chung-Ying Lin, Jiu-Yao Wang
Clin Exp Pediatr. 2025;68(11):944-951.   Published online September 12, 2025
Question: Although children with postacute sequelae of coronavirus disease 2019 (PASC) may experience persistent symptoms that affect their quality of life (QoL), a screening tool for identifying high-risk children is lacking.
Finding: Kinder Lebensqualität fragebogen (KINDL) and Children's Somatic Symptom Inventory-24 (CSSI-24) were significantly correlated. An optimal KINDL cutoff score (74.75) detected those at high risk of a reduced QoL.
Meaning: Integrating KINDL and CSSI-24 into routine pediatric outpatient care may enable timely identification and interventions for children at risk of PASC-related impairments.
Gastroenterology
Fecal microbiome profiles in infants with biliary atresia versus nonbiliary atresia cholestasis: a pilot study
Nur Azizah, Fadilah Fadilah, Silvia Werdhy Lestari, Muzal Kadim, Fithriyah Sjatha, Hanifah Oswari
Clin Exp Pediatr. 2025;68(11):932-943.   Published online August 20, 2025
Question: How does the gut microbiota profile of infants with biliary atresia (BA) differ from that of infants with non-BA cholestasis and healthy infants in the Indonesian population?
Finding: The unique fecal microbiome composition of the BA group differed significantly from that of the other 2 groups.
Meaning: There is an urgent need to improve dysbiosis in BA and non-BA cholestasis to prevent worsening liver injury in cholestasis.
Endocrinology
Long-term epidemiological insights into rickets: a nationwide population-based retrospective study
Chun-Hao Chu, Ying-Chuan Chen, Pei-Yao Liu, Chun-Chieh Hu, Yu-Lung Lin, Feng-Chih Kuo, Chieh-Hua Lu, Tzu-Ju Hsu, Yu-Tung Hung, Fuu-Jen Tsai, Chien-Ming Lin
Clin Exp Pediatr. 2025;68(11):879-891.   Published online August 20, 2025
Question: What are the nationwide trends and mortality risk factors of nutritional versus hereditary rickets among children in Asia?
Finding: In 2012–2018, the incidence of rickets steadily increased, whereas mortality rates declined. Mortality is associated with a low household income, anemia, chronic kidney disease, secondary hyperparathyroidism, and a prolonged hospital stay.
Meaning: Early diagnosis and targeted interventions addressing social and medical vulnerabilities are critical to reducing ricket-related mortality.
Review Article
Endocrinology
Continuous glucose monitoring in Korean pediatric patients with type 1 diabetes: current landscape and clinical implications
Hwa Young Kim, Jaehyun Kim
Clin Exp Pediatr. 2025;68(11):842-851.   Published online October 2, 2025
Continuous glucose monitoring (CGM) has transformed pediatric type 1 diabetes care by facilitating tighter glycemic control, reducing hypoglycemia, and improving quality of life.
Recent advances in CGM technology and the expansion of insurance coverage in Korea have led to its broader adoption.
Emerging metrics such as time in tight range offer refined tools for individualized glycemic assessment, highlighting CGM’s evolving role in personalized pediatric diabetes management.
Original Article
General Pediatrics
Trends and determinants in breastfeeding among Korean infants (2007–2021): a nationwide study using the National Health Screening Program for Infants and Children
Minwoong Kang, Eui Kyung Choi, Jeung Min Lee, Hye-Jung Shin, Woo Ryoung Lee, Son Moon Shin; Korean Society of Breastfeeding Medicine
Clin Exp Pediatr. 2025;68(10):772-780.   Published online July 4, 2025
Question: What are the recent trends and determinants of breastfeeding in South Korea?
Finding: Breastfeeding rates in South Korea declined significantly from 2007 to 2021, with lower rates observed in preterm, low-birthweight, and multiple-birth infants as well as rural or lower-income households.
Meaning: Targeted interventions, including prenatal education, postnatal support, and community-based programs, are required to address disparities and improve breastfeeding rates.
Editorial
Basic Research
Stem cell mining: urine cells to biobanking
Yong Joo Ahn
Clin Exp Pediatr. 2025;68(10):761-762.   Published online September 24, 2025
· A safe and accessible source of somatic cell generating induced pluripotent stem cells (iPSCs) in pediatric neurogenic disorders
· A noninvasive and simple method for isolating urine cells, which can effectively reprogram into pluripotent stem cells using episomal vectors
· Establishing a urine-derived iPSC bank as a reliable and scalable resource for disease modeling, therapeutic testing, and personalized medicine in pediatric neurogenic disorders.
Original Article
Basic Research
Linezolid mitigates tissue injury in experimental model of pediatric testicular torsion: TLR-4/MAPK/NF-κB involvement
Moein Ghasemi, Abolfazl Basiri, Houman Kazemzadeh, Mohammad Amin Manavi, Seyed Mohammad Tavangar, Ahmad Reza Dehpour, Hamed Shafaroodi
Clin Exp Pediatr. 2025;68(9):700-711.   Published online August 26, 2025
Question: What pharmacological strategies can limit ischemia-reperfusion injury in pediatric patients with testicular torsion?
Finding: In a rat model of testicular torsion, linezolid reduced oxidative stress, inflammation, and tissue injury via the Toll-like receptor 4/mitogen-activated protein kinase/nuclear factor kappa beta pathway.
Meaning: Linezolid may offer a pharmacological approach to attenuate testicular damage in pediatric patients with testicular torsion, warranting further clinical investigation.
Pulmonology
Effect of vitamin C supplement in treatment of childhood pneumonia requiring hospitalization: a randomized controlled trial
Chutima Phuaksaman, Katechan Jampachaisri, Klaita Srisingh
Clin Exp Pediatr. 2025;68(9):690-699.   Published online April 1, 2025
This study assessed the effects of vitamin C on children with community-acquired pneumonia (CAP). Vitamin C supplementation improved clinical symptoms within 48–72 hours compared to placebo but did not reduce the length of hospital stay (LOS). These findings suggest that vitamin C is beneficial for managing CAP severity, but does not affect LOS.
Nutrition
Factors associated with thiamin deficiency in pediatric patients with heart disease and receiving diuretics: a single-center study
Phakwan Laohathai, Rathaporn Sumboonnanonda, Puthita Saengpanit, Chodchanok Vijarnsorn, Chatchawan Srisawat, Kwanjai Chotipanang, Sarawut Junnu, Supawan Kunnangja, Hathaichanok Rukprayoon, Phakkanan Phuangphan, Sompong Liammongkolkul, Arthima Phaokong, Narumon Densupsoontorn
Clin Exp Pediatr. 2025;68(9):666-672.   Published online April 16, 2025
Question: Are pediatric patients with heart disease who are receiving diuretics at risk of thiamin deficiency (TD)?
Finding: Fifteen percent of the patients had TD. TD was associated with inadequate dietary thiamin intake and increasing age.
Meaning: The thiamin pyrophosphate effect should be assessed in those with high risk of TD. Dietary counseling should be emphasized to ensure adequate dietary thiamin intake.
Neonatology (Perinatology)
Respiratory severity score-guided postnatal systemic corticosteroid therapy for bronchopulmonary dysplasia in extremely preterm infants
Gyeong Eun Yeom, Ju Sun Heo, Baek Sup Shin, Seh Hyun Kim, Seung Han Shin, Ee-Kyung Kim, Han-Suk Kim
Clin Exp Pediatr. 2025;68(9):656-665.   Published online July 8, 2025
Question: Does a respiratory severity score (RSS)-guided postnatal corticosteroid protocol improve respiratory outcomes of extremely preterm (EP) infants without worsening neurodevelopmental outcomes?
Finding: The protocol enabled targeted and early steroid use, thereby reducing severe bronchopulmonary dysplasia without affecting mortality or causing neurodevelopmental impairments.
Meaning: The RSS-guided protocol may offer a more precise and individualized postnatal corticosteroid therapy for EP infants.
Editorial
General Pediatrics
Artificial intelligence in pediatric healthcare: bridging potential, clinical practice, and ethical considerations
Yoon Lee, Seohyun Hong, Dong Keon Yon
Clin Exp Pediatr. 2025;68(9):652-655.   Published online August 28, 2025
· Artificial intelligence (AI) holds transformative potential for pediatric healthcare, with applications spanning prevention, diagnosis, treatment, and follow-up across diverse subspecialties; however, ethical concerns, scarcity of pediatric- specific data, and limited funding remain significant challenges.
· International consensus on pediatric AI guidelines, expanding child-specific datasets, and incorporating explainable AI are essential to ensure safety and trust.
· Multicenter collaboration and increased investment can address these gaps, enabling equitable, reliable, and pediatric- centered AI solutions.
Review Article
Other
Artificial intelligence in pediatric healthcare: current applications, potential, and implementation considerations
Taejin Park, In-Hee Lee, Seung Wook Lee, Sek Won Kong
Clin Exp Pediatr. 2025;68(9):641-651.   Published online June 25, 2025
Artificial intelligence (AI) offers potential benefits in pediatric care, but its real-world adoption requires clinician literacy, ethical and legal safeguards, and cautious implementation. Large language models are emerging across healthcare, but their use in pediatric clinical practice remains premature. Thus, the cautious and accountable implementation of AI is crucial to preventing unintended harm and realizing its potential.
Original Article
Neurology
Establishing an induced pluripotent stem cell bank using urine cells from pediatric patients with neurogenetic diseases
Hien Bao Dieu Thai, WonWoo Jung, Sol Choi, Woo Joong Kim, JangSup Moon, ByungChan Lim
Clin Exp Pediatr. 2025;68(8):569-577.   Published online April 1, 2025
Question: What can be used to create a reliable supply of somatic cells for induced pluripotent stem cells (iPSCs) generation and standardize procedures for building an iPSC bank for researching pediatric neurogenetic disorders?
Findings: Noninvasively acquired urine cells are a desirable cell source for iPSC reprogramming.
Meaning: An iPSC bank can be created from diverse patient cell sources and offer a useful resource for translating research results into clinical therapy for pediatric neurogenetic disorders.
Editorial
Other
Beyond the eye: a multidisciplinary perspective on managing pediatric myopia
Eoi Jong Seo
Clin Exp Pediatr. 2025;68(8):566-568.   Published online July 18, 2025
Myopia is a growing global public health concern because of its association with irreversible vision loss such as myopic traction maculopathy, rhegmatogenous retinal detachment, and glaucoma. The effective prevention of myopia in childhood requires a multidisciplinary approach that integrates ophthalmologic care with lifestyle, nutrition, and sleep interventions. Early detection through regular visual screening in schools and primary care settings and timely ophthalmology referrals are critical to preventing high myopia.
Original Article
Neonatology (Perinatology)
Incidence of neural tube defects in tertiary care university hospital in Bangladesh
Ismat Jahan, Arif Hossain, Shah Nizam Uddin Shaon, Sadeka Choudhury Moni, Mohammad Kamrul Hassan Shabuj, Sanjoy Kumer Dey, Mohammad Abdul Mannan, Mohammod Shahidullah
Clin Exp Pediatr. 2025;68(7):530-538.   Published online April 1, 2025
Question: What is the burden of neural tube defects (NTDs) in a tertiary care neonatal intensive care unit in Bangladesh?
Finding: The overall incidence of NTD was 6.4 (range, 4.59–11.2) per 1,000 live births, and the meningomyelocele complex was the most frequent location.
Meaning: The high incidence of NTD found in a leading tertiary care multidisciplinary referral hospital in Bangladesh may not reflect that of the wider population.
Characterization of gut microbiota in very low birth weight infants with versus without bronchopulmonary dysplasia
Anucha Thatrimontrichai, Manapat Praditaukrit, Gunlawadee Maneenil, Supaporn Dissaneevate, Kamonnut Singkhamanan, Komwit Surachat
Clin Exp Pediatr. 2025;68(7):503-511.   Published online February 26, 2025
Question: Does the gut microbiota differ between very low birth weight (VLBW) infants with versus without bronchopulmonary dysplasia (BPD)?
Finding: Common respiratory pathogens were notably elevated in the BPD group, whereas anaerobic and butyrate-producing taxa, key components of postbiotics, were dominant in the non-BPD group.
Meaning: In gut-lung communication, the interplay between the intestinal and respiratory systems may implicate pro- and postbiotics in VLBW infants with BPD.
Pulmonology
Nonlinear association between neutrophil-to-lymphocyte ratio and asthma in children and adolescents in the United States: a cross-sectional study
Chuhan Cheng, Liyan Zhang
Clin Exp Pediatr. 2025;68(7):489-496.   Published online March 11, 2025
Question: Is there a nonlinear relationship between neutrophil-to-lymphocyte ratio (NLR) and asthma in children and adolescents?
Finding: NLR showed a nonlinear association with asthma, with an NLR threshold of 2.23 identifying individuals at higher risk.
Meaning: An NLR<2.23 may serve as a potential biomarker for asthma risk assessment and management in pediatric populations, thereby offering a simple tool for the early identification of at-risk individuals.
Neonatology (Perinatology)
Differential roles of interleukin-6 and adrenomedullin in early diagnosis and mortality predictions in late-onset neonatal sepsis
Emilly Henrique dos Santos, Gabriel Acca Barreira, Mariana Okay Saippa, Maria Carolina Pires Cruz, Karen Alessandra Rodrigues, Ronaldo Arkader, Thelma Suely Okay
Clin Exp Pediatr. 2025;68(6):463-471.   Published online December 23, 2024
Question: Can adrenomedullin (ADM) or interleukin-6 (IL-6) detect late-onset neonatal sepsis (LOS) at admission (area under the curve [AUC]>0.90) as an early diagnostic marker?
Finding: Only IL-6 consistently distinguished survivors from nonsurvivors (AUC>0.90) on admission and antibiotic treatment days 3 and 7. C-reactive protein level identified infections from day 3 but failed to predict outcomes (AUC<0.70).
Meaning: IL-6 level can improve LOS diagnosis and prognosis.
Hematology
Impact of Xmn1 polymorphism on hydroxyurea therapy in children with HbE-β non-transfusion dependent thalassemia: a cohort study
Saheli Roy, Paramita Bhattacharya, Atanu Kumar Dutta, Mrinal Kanti Das
Clin Exp Pediatr. 2025;68(6):437-444.   Published online February 3, 2025
Question: Does the T allele of Xmn1 polymorphism favorably influence hydroxyurea efficacy in children of Eastern descent with fetal hemoglobin (HbE)-β nontransfusion dependent thalassemia (NTDT)?
Finding: Decrease in transfusion requirement and increase in height following hydroxyurea therapy was noted in both groups, however, change in CT was more critical than that in CC genotype.
Meaning: T allele of Xmn1 polymorphism favorably influences hydroxyurea efficacy in children with HbE-β NTDT.
Nutrition
Differential effects of dietary and physical activity interventions on adiposity of children with obesity
Anekchoke Tangtongsoong, Chonnikant Visuthranukul, Yuda Chongpison, Sirinuch Chomtho
Clin Exp Pediatr. 2025;68(5):370-378.   Published online February 3, 2025
Question: How do dietary intake and physical activity affect body mass index (BMI) z scores and adiposity among children with obesity?
Finding: Higher dietary protein and fiber intakes were significantly associated with a decrease in BMI z scores and adiposity among children with obesity.
Meaning: Optimizing dietary interventions by focusing on protein and fiber intakes could be an effective strategy for managing childhood obesity.
Immunology
Serum bactericidal activity against meningococcus in patients with systemic lupus erythematosus
Soyoung Lee, Kyung-Hyo Kim, Ji Hyen Lee, Han Wool Kim
Clin Exp Pediatr. 2025;68(5):362-369.   Published online January 13, 2025
Question: What is the level of immunity against meningococcal infections in patients with systemic lupus erythematosus (SLE) under the age of 19, and is vaccination against meningococcus necessary for these patients, given their susceptibility to infections due to immunosuppressive treatments and disease characteristics?
Finding: Although some of our study patients exhibited serum bactericidal activity against meningococci, most remained seronegative.
Meaning: These findings suggest that patients with SLE who are at risk of meningococcal infection receive appropriate vaccinations.
Review Article
Nutrition
The Korea Infant Physical Growth Examination Survey (KIPGroS): a study protocol
Jong Woo Hahn, MinSoo Shin, Jin Gyu Lim, Yoon-Joo Kim, Ki Soo Kang, Narae Lee, Seong Hee Jeong, Mun Hui Jeong, Yeoun Joo Lee, Eui Kyung Choi, Jung Ok Shim, Jee Yoon Park, Chan-Wook Park, Joo Young Kim, Su Jin Jeong, Young Hwa Jung, Jaehyun Kim, Chang Won Choi, Ju Whi Kim, Seung Han Shin, Yun Jeong Lee, Young Ah Lee, Choong-Ho Shin, Seung-sik Hwang, Young Eun Kim, Youn Ha Kang, Kyungwon Oh, Sungha Yun, Jae Sung Ko, Jin Soo Moon
Clin Exp Pediatr. 2025;68(5):352-358.   Published online February 13, 2025
The suitability of World Health Organization (WHO) growth charts for assessing the growth of children under 3 years of age in all countries remains controversial, and their applicability must be evaluated based on country-specific growth data. The Korea Infant Physical Growth Examination Survey evaluated the suitability of WHO growth charts to contribute to the next revision of growth charts in Korea.
Allergy
Global burden of asthma among children and adolescents with projections to 2050: a comprehensive review and forecasted modeling study
Tae Hyeon Kim, Hyunjee Kim, Jiyeon Oh, Soeun Kim, Michael Miligkos, Dong Keon Yon, Nikolaos G Papadopoulos
Clin Exp Pediatr. 2025;68(5):329-343.   Published online April 22, 2025
Pediatric asthma can persist to adulthood and must be effectively managed. This review examined the prevalence of asthma among individuals younger than 20 years and revealed a decline from 1990 to 2021, higher rates in males, and a peak in children aged 5–9 years. Despite a projected continued decrease in prevalence by 2050, asthma will remain a significant health concern for children and adolescents.
Original Article
Pulmonology
Impact of obesity on pulmonary function of preschool children: an impulse oscillometry study
Anuvat Klubdaeng, Kanokporn Udomittipong, Apinya Palamit, Pawinee Charoensittisup, Khunphon Mahoran
Clin Exp Pediatr. 2025;68(4):319-325.   Published online November 13, 2024
Question: Does obesity in preschool children affect lung function, and which obesity indices can predict such alterations?
Finding: Preschool children with obesity exhibit impaired lung function characterized by elevated total and peripheral airway resistance. Waist-to-height ratio was the strongest predictor of such changes.
Meaning: Early obesity prevention and treatment are needed. Monitoring waist-to-height ratio, body weight, and body mass index may help identify children at risk of altered lung function.
Neurology
Occurrence of stroke in children and young adults in Indonesia: a multicenter private hospital study
Jeanne Leman, Veli Sungono, Yosua Timotius Haryono, Muhammad Adam Mudzakir, Dewi Lestari Rahmawati, Callistus Bruce Henfry Sulay, Gilbert Sterling Octavius
Clin Exp Pediatr. 2025;68(4):303-310.   Published online November 13, 2024
Question: What is the occurrence of pediatric stroke in Indonesia?
Finding: This multicenter study identified 1,074 stroke cases, predominantly hemorrhagic (83.4%), with males and older children at higher risk. Accidents were the primary cause (73.2%).
Meaning: Pediatric stroke in Indonesia shows critical epidemiological trends, highlighting the need for targeted prevention efforts, particularly for high-risk groups like males and accident victims.
Review Article
Neurology
Cerebral organoid research for pediatric patients with neurological disorders
Jin Eun, Jung Eun Lee, Seung Ho Yang
Clin Exp Pediatr. 2025;68(4):269-277.   Published online November 28, 2024
Cerebral organoids obtained from human induced pluripotent stem cells are transforming the study of pediatric neurological diseases by providing more accurate models of human brain development and pathology. These advancements have improved pathology modeling and the potential for novel therapeutic approaches despite existing challenges such as reproducibility and vascularization.
Original Article
Gastroenterology
Outcome of pediatric inflammatory bowel disease in Asian children: a multinational 1-year follow-up study
Pornthep Tanpowpong, Suporn Treepongkaruna, James Guoxian Huang, Kee Seang Chew, Karen Sophia Calixto Mercado, Almida Reodica, Shaman Rajindrajith, Wathsala Hathagoda, Yoko Kin Yoke Wong, Way Seah Lee, Marion Margaret Aw
Clin Exp Pediatr. 2025;68(3):247-256.   Published online November 13, 2024
Question: Short-term (1-year) follow-up data in pediatric patients with inflammatory bowel disease (IBD), especially in Southeast Asian countries, are limited.
Finding/Meaning: Abdominal pain and pallor rates remained high at 1 year after IBD diagnosis. Three independent factors of 1-year clinical remission for Crohn disease were oral prednisolone, antibiotic, and immunomodulator use at 1-year follow-up. A history of weight loss at diagnosis was the only independent risk factor of IBD flare.
Endocrinology
Prednisolone impairs trabecular bone score changes in adolescents with 21-hydroxylase deficiency
Pattara Wiromrat, Yutapong Raruenrom, Phanpaphorn Namphaisan, Nantaporn Wongsurawat, Ouyporn Panamonta, Chatlert Pongchaiyakul
Clin Exp Pediatr. 2025;68(3):238-246.   Published online November 13, 2024
Question: What is the prevalence of an impaired trabecular bone score (TBS), a measure of bone microarchitecture, in adolescents with 21-hydroxylase deficiency (21OHD)? Do prednisolone and hydrocortisone affect TBS differently in this patient population?
Finding: Impaired TBS was observed in 18% of participants. Prednisolone use negatively impacted TBS change.
Meaning: Impaired TBS is prevalent among adolescents with 21OHD. Prednisolone impairs trabecular bone microarchitecture development.
Neonatology (Perinatology)
Effect of high-frequency oscillatory ventilation with intermittent sigh breaths on carbon dioxide levels in neonates
Kulthida Baingam, Anucha Thatrimontrichai, Manapat Praditaukrit, Gunlawadee Maneenil, Supaporn Dissaneevate
Clin Exp Pediatr. 2025;68(2):178-184.   Published online November 13, 2024
Question: Can sigh breaths (Sighs) application during high-frequency oscillatory ventilation (HFOV) decrease partial pressure of carbon dioxide (PaCO2) levels?
Finding: The mean PaCO2 level after Sighs during HFOV was significantly decreased compared to that after HFOV alone (mean difference, -3.6 mmHg).
Meaning: HFOV plus Sighs functionality can reduce PaCO2 levels. However, further studies are required to conclusively determine the effects of Sighs.
Gastroenterology
Differences in immune cells and gene expression in human milk by parity on integrated scRNA sequencing
Dae Yong Yi, Hong-Jai Park, Min Sun Shin, Hyoungsu Kim, Sang Jin Lee, Insoo Kang
Clin Exp Pediatr. 2025;68(2):141-152.   Published online January 10, 2025
Question: Is there a difference in immune cells in human breast milk by parity?
Finding: There were higher proportions of monocytes and T/B cells in the primiparous and multiparous group, respectively. The expression of genes with a direct role in the infant immune system and immune response-related genes were highest in the primiparous group
Meaning: There were parity-dependent differences in the expression of genes between innate and adaptive immune cells.

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