Displaying publications 101 - 120 of 136 in total

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  1. Ng RT, Lee WS, Ang HL, Teo KM, Yik YI, Lai NM
    Cochrane Database Syst Rev, 2016 Oct 12;10(10):CD010873.
    PMID: 27732736
    BACKGROUND: Childhood constipation is a common problem with substantial health, economic and emotional burdens. Existing therapeutic options, mainly pharmacological, are not consistently effective, and some are associated with adverse effects after prolonged use. Transcutaneous electrical stimulation (TES), a non-pharmacological approach, is postulated to facilitate bowel movement by modulating the nerves of the large bowel via the application of electrical current transmitted through the abdominal wall.

    OBJECTIVES: Our main objective was to evaluate the effectiveness and safety of TES when employed to improve bowel function and constipation-related symptoms in children with constipation.

    SEARCH METHODS: We searched MEDLINE (PubMed) (1950 to July 2015), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, Issue 7, 2015), EMBASE (1980 to July 2015), the Cochrane IBD Group Specialized Register, trial registries and conference proceedings to identify applicable studies .

    SELECTION CRITERIA: Randomized controlled trials that assessed any type of TES, administered at home or in a clinical setting, compared to no treatment, a sham TES, other forms of nerve stimulation or any other pharmaceutical or non-pharmaceutical measures used to treat constipation in children were considered for inclusion.

    DATA COLLECTION AND ANALYSIS: Two authors independently assessed studies for inclusion, extracted data and assessed risk of bias of the included studies. We calculated the risk ratio (RR) and corresponding 95% confidence interval (CI) for categorical outcomes data and the mean difference (MD) and corresponding 95% CI for continuous outcomes.

    MAIN RESULTS: One study from Australia including 46 children aged 8 to 18 years was eligible for inclusion. There were multiple reports identified, including one unpublished report, that focused on different outcomes of the same study. The study had unclear risk of selection bias, high risks of performance, detection and attrition biases, and low risks of reporting biases.There were no significant differences between TES and the sham control group for the following outcomes: i).number of children with > 3 complete spontaneous bowel movements (CSBM) per week (RR 1.07, 95% CI 0.74 to 1.53, one study, 42 participants) (Quality of evidence: very low, due to high risk of bias and serious imprecision ), ii). number of children with improved colonic transit assessed radiologically (RR 5.00, 95% CI 0.79 to 31.63; one study, 21 participants) (Quality of evidence: very low, due to high risk of bias, serious imprecision and indirectness of the outcome). However, mean colonic transit rate, measured as the position of the geometric centre of the radioactive substance ingested along the intestinal tract, was significantly higher in children who received TES compared to sham (MD 1.05, 95% CI 0.36 to 1.74; one study, 30 participants) (Quality of evidence: very low, due to high risk of bias , serious imprecision and indirectness of the outcome). There was no significant difference between the two groups in the number of children with improved soiling-related symptoms (RR 2.08, 95% CI 0.86 to 5.00; one study, 25 participants) (Quality of evidence: very low, due to high risk of bias and serious imprecision). There was no significant difference in the number of children with improved quality of life (QoL) (RR 4.00, 95% CI 0.56 to 28.40; one study, 16 participants) (Quality of evidence: very low, due to high risk of bias issues and serious imprecision ). There were also no significant differences in in self-perceived (MD 5.00, 95% CI -1.21 to 11.21) or parent-perceived QoL (MD -0.20, 95% CI -7.57 to 7.17, one study, 33 participants for both outcomes) (Quality of evidence for both outcomes: very low, due to high risk of bias and serious imprecision). No adverse effects were reported in the included study.

    AUTHORS' CONCLUSIONS: The results for the outcomes assessed in this review are uncertain. Thus no firm conclusions regarding the efficacy and safety of TES in children with chronic constipation can be drawn. Further randomized controlled trials assessing TES for the management of childhood constipation should be conducted. Future trials should include clear documentation of methodologies, especially measures to evaluate the effectiveness of blinding, and incorporate patient-important outcomes such as the number of patients with improved CSBM, improved clinical symptoms and quality of life.

  2. Lee WS, Chew KS, Ng RT, Kasmi KE, Sokol RJ
    Hepatol Int, 2020 May;14(3):305-316.
    PMID: 32356227 DOI: 10.1007/s12072-020-10048-8
    Premature infants and children with intestinal failure (IF) or short bowel syndrome are susceptible to intestinal failure-associated liver disease (IFALD, previously referred to as parenteral nutrition-associated liver disease, or PNALD). IFALD in children is characterized by progressive cholestasis and biliary fibrosis, and steatohepatitis in adults, and is seen in individuals dependent upon prolonged administration of PN. Many factors have been proposed as contributing to the pathogenesis of IFALD. In recent years, the focus has been on the potential synergistic roles of the intestinal microbiome, increased intestinal permeability, activation of hepatic innate immune pathways, and the use of intravenous soybean-oil-based intravenous lipid emulsions (SO-ILE). In vitro and in vivo studies have identified stigmasterol, a component of the plant sterols present in SO-ILE, as playing an important role. Although various strategies have been adopted to prevent or reverse IFALD, most suffer from a lack of strong evidence supported by well-designed, prospective clinical trials with clearly defined endpoints. Reduction in the amount of SO-ILEs or replacement with non-SO-ILEs has been shown to reverse IFALD although safety and long-term effectiveness have not been studied. Medical and surgical modalities to increase intestinal adaptation, advance enteral feedings, and prevent central line bloodstream infections are also important preventative strategies. There is a continued need to conduct high-quality, prospective trials with clearly define outcome measures to ascertain the potential benefits of these strategies.
  3. Saraswathy TS, Sinniah M, Lee WS, Lye MS, Choo KE, Jusoh H
    PMID: 7777927
    In 1990 the Institute for Medical Research carried out a serosurvey in the state of Kelantan to study the age stratified immune prevalence rates for measles and poliomyelitis. Our findings indicate that 981 out of 1,097 (89%) of the population screened had measles antibodies and more than 90% (366 out of 400) had antibodies to all three serotypes of poliovirus. The susceptible group for measles was infants below one year of age, of whom 53.3% (8/15) did not have measles antibody. Of 400 subjects, 125 (31.3%) who were either incompletely vaccinated or had not been vaccinated against poliomyelitis, had polio neutralizing antibodies to all three poliovirus serotypes, suggesting herd immunity in the population. No high risk age group could be identified for poliomyelitis.
  4. Lee WS, Lum SH, Lim CB, Chong SY, Khoh KM, Ng RT, et al.
    Hepatol Int, 2015 Apr;9(2):292-302.
    PMID: 25788179 DOI: 10.1007/s12072-014-9558-0
    BACKGROUND: Little is known about autoimmune liver disease (AILD) in Asian children. We studied the clinical features and predictors of outcome in childhood AILD in an Asian population.

    METHODS: Retrospective review of AILD [autoimmune hepatitis type 1 and 2 (AIH1, AIH2), primary sclerosing cholangitis (PSC) and autoimmune sclerosing cholangitis (ASC)] seen at two pediatric liver units in Malaysia.

    RESULTS: At presentation, 17 (56%) of the 32 children [19 females, 59%; median (range) age 7.7 (1.8-15.5) years] with AILD (AIH1 = 18, AIH2 = 5, PSC = 0, ASC = 9) had liver cirrhosis. At final review [median (range) duration of follow-up 4.8 (0.4-12) years], 24 patients (75%) survived with a native liver. Twenty-one (66%) were in remission; 19 (AIH1 = 11; AIH2 = 4, ASC = 4) were on prednisolone and/or azathioprine, one on cyclosporine and another on mycophenolate mofetil. Three (AIH1 = 3) were in partial remission. Of the two who underwent liver transplantation (LT; 6.5%; both ASC), one died of primary graft failure after LT. Six patients (19%) died without LT (acute liver failure, n = 1; end-stage liver disease, n = 5). The overall survival rate (native liver and survival post-LT) was 78%. A delay in seeking treatment adversely affected the final outcome [survival with native liver vs. LT or death (duration between onset of disease and treatment; median ± standard error) = 2.5 ± 2.9 months vs. 24.0 ± 13.3 months; p = 0.012].

    CONCLUSIONS: Although remission was achieved in the majority of patients with prednisolone and/or azathioprine therapy, delay in seeking diagnosis and treatment adversely affects the outcome of childhood AILD in Malaysia.
  5. Lee WS, Karthik SV, Ng RT, Ong SY, Ong C, Chiou FK, et al.
    Pediatr Neonatol, 2019 08;60(4):396-404.
    PMID: 31409456 DOI: 10.1016/j.pedneo.2018.09.007
    BACKGROUND: Current knowledge on the clinical features and natural history of childhood primary sclerosing cholangitis - inflammatory bowel disease in Asia is limited. We described the presenting features and natural history of primary sclerosing cholangitis-inflammatory bowel disease seen in a cohort of Southeast Asian children.

    METHODS: We conducted a retrospective review of childhood primary sclerosing cholangitis-inflammatory bowel disease from three tertiary centers in Singapore and Malaysia.

    RESULTS: Of 24 patients (boys, 58%; median age at diagnosis: 6.3 years) with primary sclerosing cholangitis-inflammatory bowel disease (ulcerative colitis, n = 21; Crohn's disease, n = 1; undifferentiated, n = 2), 63% (n = 15) were diagnosed during follow-up for colitis, and 21% (n = 5) presented with acute or chronic hepatitis, 17% (n = 4) presented simultaneously. Disease phenotype of liver involvement showed 79% had sclerosing cholangitis-autoimmune hepatitis overlap, 54% large duct disease, and 46% small duct disease. All patients received immunosuppression therapy. At final review after a median [±S.D.] duration follow-up of 4.7 [±3.8] years, 12.5% patients had normal liver enzymes, 75% persistent disease, and 12.5% liver failure. The proportion of patients with liver cirrhosis increased from 13% at diagnosis to 29%; 21% had portal hypertension, and 17% had liver dysfunction. One patient required liver transplant. Transplant-free survival was 95%. For colitis, 95% had pancolitis, 27% rectal sparing, and 11% backwash ileitis at initial presentation. At final review, 67% patients had quiescent bowel disease with immunosuppression. One patient who had UC with pancolitis which was diagnosed at 3 years old developed colorectal cancer at 22 years of age. All patients survived.

    CONCLUSIONS: Liver disease in primary sclerosing cholangitis-inflammatory bowel disease in Asian children has variable severity. With immunosuppression, two-thirds of patients have quiescent bowel disease but the majority have persistent cholangitis and progressive liver disease.

  6. Lee WS, Tee CW, Tan AG, Wong SY, Chew KS, Cheang HK, et al.
    Pediatr Neonatol, 2019 12;60(6):676-683.
    PMID: 31056340 DOI: 10.1016/j.pedneo.2019.04.004
    BACKGROUND: Parents often express concerns about feeding difficulties in their child. We hypothesized that these parental concerns were associated with adverse growth status in early childhood. We aimed to determine the prevalence of such concerns and whether these concerns were associated with adverse growth status in early childhood.

    METHODS: We performed a cross-sectional study among healthy children aged 12-36 months attending three well-baby clinics in three urban areas in Malaysia and Singapore between December 2016 and February 2017. Parents were interviewed for concerns about their child's feeding and presence of behavioral and organic red flags for feeding difficulties. We defined growth faltering as weight-for-age < 3rd centile and short stature as height-for-age < 3rd centile according to World Health Organization Growth Standards.

    RESULTS: Of the 303 children studied (boys = 160, 52.8%; mean [± SD] chronological age at interview 21.3 [± 4.0] months), 13% (n = 38/292) had growth faltering and 19.5% (n = 50/256) had short stature. Overall, 36.3% (n = 110) of parents expressed concerns about their child's feeding behavior. Sixty-eight percent (n = 206) of parents reported presence of at least one behavioral and 18.5% (n = 56) had at least one organic red flag for feeding difficulties, respectively. 9.9% (n = 30) had both behavioral and organic red flags for feeding difficulties. Growth faltering was significantly associated with parental concern about feeding (odds ratio [OR] 3.049, p 

  7. Chatchatee P, Lee WS, Carrilho E, Kosuwon P, Simakachorn N, Yavuz Y, et al.
    J Pediatr Gastroenterol Nutr, 2014 Apr;58(4):428-37.
    PMID: 24614142 DOI: 10.1097/MPG.0000000000000252
    OBJECTIVE: The aim of this study was to investigate the effect of growing-up milk (GUM) with added short-chain galacto-oligosaccharides (scGOS)/long-chain fructo-oligosaccharides (lcFOS) (9:1) (Immunofortis) and n-3 long-chain polyunsaturated fatty acids (LCPUFAs) on the occurrence of infections in healthy children attending day care centres.

    METHODS: In a randomised double-blind controlled, parallel, multicountry intervention study, 767 healthy children, ages 11 to 29 months, received GUM with scGOS/lcFOS/LCPUFAs (the active group, n = 388), GUM without scGOS/lcFOS/LCPUFAs (the control group, n = 379), or cow's milk (n = 37) for 52 weeks. The primary outcome measure was the number of episodes of upper respiratory tract infections or gastrointestinal infections based on a combination of subject's illness symptoms reported by the parents during the intervention period.

    RESULTS: Children in the active group compared with the control group had a decreased risk of developing at least 1 infection (299/388 [77%] vs 313/379 [83%], respectively, relative risk 0.93, 95% confidence interval [CI] 0.87-1.00; logistic regression P = 0.03). There was a trend toward a reduction (P = 0.07) in the total number of infections in the active group, which was significant when confirmed by one of the investigators (268/388 [69%] vs 293/379 [77%], respectively, relative risk 0.89, 95% CI 0.82-0.97; P = 0.004, post hoc). More infectious episodes were observed in the cow's milk group, when compared with both GUM groups (34/37 [92%] vs 612/767 [80%], respectively, relative risk 1.15, 95% CI 1.04-1.28).

    CONCLUSIONS: This is the first study in children to show a reduced risk of infection following consumption of GUM supplemented with scGOS/lcFOS/n-3 LCPUFAs. The borderline statistical significance justifies a new study to confirm this finding.

  8. Lee WS, Tee CW, Koay ZL, Wong TS, Zahraq F, Foo HW, et al.
    World J Gastroenterol, 2018 Mar 07;24(9):1013-1021.
    PMID: 29531465 DOI: 10.3748/wjg.v24.i9.1013
    AIM: To study implications of measuring quality indicators on training and trainees' performance in pediatric colonoscopy in a low-volume training center.

    METHODS: We reviewed retrospectively the performance of pediatric colonoscopies in a training center in Malaysia over 5 years (January 2010-December 2015), benchmarked against five quality indicators: appropriateness of indications, bowel preparations, cecum and ileal examination rates, and complications. The European Society of Gastrointestinal Endoscopy guideline for pediatric endoscopy and North American Society for Pediatric Gastroenterology, Hepatology and Nutrition training guidelines were used as benchmarks.

    RESULTS: Median (± SD) age of 121 children [males = 74 (61.2%)] who had 177 colonoscopies was 7.0 (± 4.6) years. On average, 30 colonoscopies were performed each year (range: 19-58). Except for investigations of abdominal pain (21/177, 17%), indications for colonoscopies were appropriate in the remaining 83%. Bowel preparation was good in 87%. One patient (0.6%) with severe Crohn's disease had bowel perforation. Cecum examination and ileal intubation rate was 95% and 68.1%. Ileal intubation rate was significantly higher in diagnosing or assessing inflammatory bowel disease (IBD) than non-IBD (72.9% vs 50.0% P = 0.016). Performance of four trainees was consistent throughout the study period. Average cecum and ileal examination rate among trainees were 97% and 77%.

    CONCLUSION: Benchmarking against established guidelines helps units with a low-volume of colonoscopies to identify area for further improvement.

  9. Lee WS, Wong SY, Wong SY, Koay ZL, Safuan NSK, Sam ZH, et al.
    Ann Acad Med Singap, 2021 Jul;50(7):580-582.
    PMID: 34342340 DOI: 10.47102/annals-acadmedsg.2020586
  10. Lau MY, Ponnampalavanar S, Lee WS, Jabar KA, Chua KH, Idris N, et al.
    J Infect Chemother, 2020 Oct;26(10):1058-1061.
    PMID: 32546330 DOI: 10.1016/j.jiac.2020.05.009
    The emergence of carbapenemase-producing Enterobacteriaceae has become a major global concern. OXA-48-like carbapenemase gene and its variants have been increasingly reported worldwide. This study reported the first OXA-181-producing Klebsiella quasipneumoniae isolate in Malaysia. This bacterium was isolated from blood specimen of a three-year-old boy with Alagille syndrome who had liver biopsy on October 2016. He had undergone liver transplant in India ten months previously. The genotypic and phenotypic characteristics of the strain were elucidated in this study. To our best knowledge, this is the first report of OXA-181-producing K. quasipneumoniae in Malaysia.
  11. Chew KS, Em JM, Koay ZL, Jalaludin MY, Ng RT, Lum LCS, et al.
    Pediatr Neonatol, 2021 01;62(1):49-54.
    PMID: 32891528 DOI: 10.1016/j.pedneo.2020.08.009
    BACKGROUND: Functional gastrointestinal disorders (FGIDs) are common in children. The prevalence of FGIDs varies across the world but is unknown in Malaysia. We aimed to investigate the prevalence of FGIDs in healthy Malaysian infants.

    METHODS: This was a cross-sectional study involving healthy infants younger than 12 months of age who attended a well-baby clinic. A universal sampling method was adopted. Children with congenital disorders potentially affecting gastrointestinal functions, chronic debilitating diseases and hypothyroidism were excluded. Rome IV criteria were used to define FGIDs.

    RESULTS: Of the total 534 infants recruited (54% males), 92% were born at term; 85% had normal birth weight [range 2.5-4.0 kg], and the mean (±S.D.) age at interview was 6.8 (±3.4) months. Thirty-six percent were breastfed, 29% were formula-fed, and 35% had mixed feeding. Prevalence of infant regurgitation and rumination syndrome was 10.5% and 1.7%, respectively. Prevalence of infant colic was 1.9% (3/160) (infant 

  12. Teh CSJ, Lau MY, Chong CW, Ngoi ST, Chua KH, Lee WS, et al.
    J Microbiol Methods, 2021 04;183:106184.
    PMID: 33662480 DOI: 10.1016/j.mimet.2021.106184
    Diseases caused by typhoidal and non-typhoidal Salmonella remain a considerable threat to both developed and developing countries. Based on the clinical symptoms and serological tests, it is sometimes difficult to differentiate the Salmonella enterica serovar Paratyphi A (S. enterica serovar Paratyphi A) from serovar Typhi (S. enterica serovar Typhi). In this study, we developed a quadruplex real-time polymerase chain reaction (PCR) assay with an internal amplification control (IAC), to simultaneously differentiate S. enterica serovar Paratyphi A from serovar Typhi and to detect other Salmonella serovars which cause salmonellosis in humans. This assay was evaluated on 155 salmonellae and non-salmonellae strains and demonstrated 100% specificity in species differentiation. Inclusion of an IAC did not affect the efficiency of the assay. Further evaluation using a blind test on spiked stool, blood and food specimens showed that the detection limit was at 103 -104 CFU/mL (or g) and a high PCR efficiency with different targets (R2 > 0.99), except for S. enterica serovar Paratyphi A in blood. This assay has been applied to clinical specimens to detect the causative agents of gastrointestinal infections and has successfully identified 6 salmonellosis patients from the 50 diarrhoea patients. The quadruplex real-time PCR developed in this study could enhance the detection and differentiation of salmonellae. This assay could be applied to stools, blood and food based on the notable performance in the simulation tests and field evaluation.
  13. Wong CH, Tan TR, Heng HY, Ramesh T, Ting PW, Lee WS, et al.
    Med J Malaysia, 2016 Aug;71(4):186-192.
    PMID: 27770117
    Open disclosure is poorly understood in Malaysia but is an ethical and professional responsibility. The objectives of this study were to determine: (1) the perception of parents regarding the severity of medical error in relation to medication use or diagnosis; (2) the preference of parents for information following the medical error and its relation to severity; and (3) the preference of parents with regards to disciplinary action, reporting, and legal action.
  14. Lee WS, Grundy R, Milford DV, Taylor CM, de Ville de Goyet J, McKiernan PJ, et al.
    Pediatr Transplant, 2003 Aug;7(4):270-6.
    PMID: 12890004
    Combination of cyclosporine (CsA) and tacrolimus immunosuppression post-liver transplantation (LT) and the chemotherapeutic drugs used to treat hepatoblastoma (HB), are nephrotoxic. We aimed to determine the severity and duration of nephrotoxicity in children following LT for unresectable HB. We reviewed all children undergoing LT for unresectable HB at the Liver Unit, Birmingham Children's Hospital, UK, from 1991 to July 2000. Thirty-six children undergoing LT for biliary atresia, matched for age and sex, were selected as controls to compare pre- and post-LT renal function. Renal function was determined by estimation of glomerular filtration rate (eGFR) derived from plasma creatinine using Schwartz's formula. Twelve children with HB (mean age of diagnosis 33 months) who underwent LT (mean age 47 months) and 36 controls (mean age of LT 34 months) were studied. CsA was the main immunosuppressive drug used in each group. The median eGFR before, and at 3, 6, 12, 24 and 36 months after LT in HB group was significantly lower than controls (93 vs. 152, 66 vs. 79, 62 vs. 86, 66 vs. 87, 64 vs. 94, 53 vs. 90 mL/min/1.73 m2, respectively; 0.01 < p < 0.03). The reductions in the median eGFR of both the HB group and controls before and at 36 months after LT were 49 and 41%, respectively. At 36 months after LT, there was a trend for partial recovery of the eGFR in the controls but not in the HB group. Children who underwent LT for unresectable HB had renal dysfunction before transplantation that persisted for 36 months after LT.
  15. Lee YY, Hassan SA, Ismail IH, Chong SY, Raja Ali RA, Amin Nordin S, et al.
    J Paediatr Child Health, 2017 Dec;53(12):1152-1158.
    PMID: 29205651 DOI: 10.1111/jpc.13640
    The role of gut microbiota in early life and its impact on gut health and subsequent diseases remain unclear. There is a lack of research and awareness in this area, especially in the Asia-Pacific region, including Malaysia. This paper reports the position of a Malaysian Working Group on some key issues surrounding gut microbiota in early life and its role in gut health and diseases, as well as experts' stand on probiotics and prebiotics. The group reached a consensus that certain factors, including elective caesarean; premature deliveries; complementary feeding; use of antibiotics, prebiotics and/or probiotics; and exposure to the external environmental, have an impact on gut microbiota in early life. However, as evidence is lacking, especially from the Asia-Pacific region, further studies are needed to understand how gut microbiota in early life affects subsequent diseases, including allergy, inflammatory bowel disease, obesity and infantile colic. Lastly, although beneficial in acute diarrhoeal disease and probably allergic eczema, probiotics (and/or prebiotics) should be used cautiously in other gut dysbiotic conditions until more data are available.
  16. Lee WS, Arai K, Alex G, Treepongkaruna S, Kim KM, Choong CL, et al.
    J Gastroenterol Hepatol, 2023 Apr;38(4):510-522.
    PMID: 36508314 DOI: 10.1111/jgh.16084
    Disease phenotype of pediatric inflammatory bowel disease (PIBD) in children from the Asia-Pacific region differs from that of children from the West. Many parts of Asia are endemic for tuberculosis, making diagnosis and management of pediatric Crohn's disease a challenge. Current available guidelines, mainly from Europe and North America, may not be completely applicable to clinicians caring for children with PIBD in Asia due to differences in disease characteristics and regional resource constraints. This position paper is an initiative from the Asian Pan-Pacific Society for Pediatric Gastroenterology, Hepatology and Nutrition (APPSPGHAN) that aims to provide an up-to-date, evidence-based approach to PIBD in the Asia-Pacific region. A group of pediatric gastroenterologists with a special interest in PIBD performed an extensive literature search covering epidemiology, disease characteristics and natural history, management, and monitoring. Attention was paid to publications from the region with special consideration to a resource-limited setting. This current position paper deals with surgical management, disease monitoring, immunization, bone health, and nutritional issues of PIBD in Asia. A special section on differentiating pediatric Crohn's disease from tuberculosis in children is included. This position paper provides a useful guide to clinicians in the surgical management, disease monitoring, and various health issues in children with IBD in Asia-Pacific region.
  17. Simovic I, Hilmi I, Ng RT, Chew KS, Wong SY, Lee WS, et al.
    United European Gastroenterol J, 2024 Feb;12(1):103-121.
    PMID: 37837511 DOI: 10.1002/ueg2.12477
    BACKGROUND: ATG16L1 plays a fundamental role in the degradative intracellular pathway known as autophagy, being a mediator of inflammation and microbial homeostasis. The variant rs2241880 can diminish these capabilities, potentially contributing to inflammatory bowel disease (IBD) pathogenesis.

    OBJECTIVES: To perform an updated meta-analysis on the association between ATG16L1 rs2241880 and IBD susceptibility by exploring the impact of age, ethnicity, and geography. Moreover, to investigate the association between rs2241880 and clinical features.

    METHODS: Literature searches up until September 2022 across 7 electronic public databases were performed for all case-control studies on ATG16L1 rs2241880 and IBD. Pooled odds ratios (ORP ) and 95% CI were calculated under the random effects model.

    RESULTS: Our analyses included a total of 30,606 IBD patients, comprising 21,270 Crohn's disease (CD) and 9336 ulcerative colitis (UC) patients, and 33,329 controls. ATG16L1 rs2241880 was significantly associated with CD susceptibility, where the A allele was protective (ORP : 0.74, 95% CI: 0.72-0.77, p-value: <0.001), while the G allele was a risk factor (ORP : 1.23, 95% CI: 1.09-1.39, p-value: 0.001), depending on the minor allele frequencies observed in this multi-ancestry study sample. rs2241880 was predominantly relevant in Caucasians from North America and Europe, and in Latin American populations. Importantly, CD patients harbouring the G allele were significantly more predisposed to perianal disease (ORP : 1.21, 95% CI: 1.07-1.38, p-value: 0.003).

    CONCLUSIONS: ATG16L1 rs2241880 (G allele) is a consistent risk factor for IBD in Caucasian cohorts and influences clinical outcomes. As its role in non-Caucasian populations remains ambiguous, further studies in under-reported populations are necessary.

  18. Tanpowpong P, Treepongkaruna S, Huang J, Chew KS, Mercado K, Reodica A, et al.
    Clin Exp Pediatr, 2024 Nov 13.
    PMID: 39533716 DOI: 10.3345/cep.2024.01144
    BACKGROUND: Epidemiological data on pediatric inflammatory bowel disease (PIBD) have been reported in Asian countries. However, short-term follow-up data, especially in Southeast Asian countries, are limited.

    PURPOSE: Analyze and compare the baseline and 1-year follow-up (1FU) data for PIBD in Asian children.

    METHODS: The multinational network included patients with PIBD (aged <19 years) in five Asian countries (Malaysia, Philippines, Singapore, Sri Lanka, and Thailand). The diagnosis of PIBD requires gastrointestinal endoscopy. The patients' demographics, clinical information, disease-related outcomes, and treatment data at 1FU were collected.

    RESULTS: In 1995-2021, 368 patients were enrolled (CD, 56.8%; UC, 38%; and IBD-unclassified, 5.2%). At 1FU, symptoms including diarrhea, bloody stools, and nausea/vomiting subsided in <3%, while abdominal pain persisted in 10.5% of patients with CD and 7.1% of patients with UC. Assessment endoscopy was performed at 1FU in 38% of CD and 31% of UC cases, of which 21% and 23% showed mucosal healing, respectively. Oral prednisolone was administered to 55.3% of patients at diagnosis and 26.8% at 1FU, while infliximab was administered to 2.5% and 7.2% of patients at diagnosis and 1FU, respectively. Independent factors of 1-year clinical remission for CD were oral prednisolone (odds ratio [OR], 0.20; 95% confidence interval [CI], 0.06-0.68), antibiotic use (OR, 0.09; 95% CI, 0.01-0.54), and immunomodulator use (OR, 5.26; 95% CI, 1.52-18.22). A history of weight loss at diagnosis was the only independent risk factor of an IBD flare by 1FU (OR, 2.01; 95% CI, 1.12-3.63).

    CONCLUSION: The proportion of children with PIBD and abdominal pain at 1FU remained high. The rates of repeat endoscopy and infliximab use were suboptimal with high rates of systemic corticosteroid use. Quality improvement based on the aforementioned predictors may enhance PIBD care in this geographic region or similar settings.

  19. Ismail IH, Lay C, H A Majid N, Lee WS, Lee BW, Abdul Latiff AH, et al.
    J Allergy Clin Immunol, 2020 11;146(5):1005-1007.
    PMID: 32860819 DOI: 10.1016/j.jaci.2020.05.057
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