Publications by authors named "Yoon J Kim"

Background/aims: The incidence of steatotic liver disease (SLD) is increasing across all age groups as the incidence of obesity increases worldwide. The existing noninvasive prediction models for SLD require laboratory tests or imaging and perform poorly in the early diagnosis of infrequently screened populations such as young adults and individuals with healthcare disparities. We developed a machine learning-based point-of-care prediction model for SLD that is readily available to the broader population with the aim of facilitating early detection and timely intervention and ultimately reducing the burden of SLD.

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Background & Aims: Various hepatocellular carcinoma (HCC) prediction models have been proposed for patients with chronic hepatitis B (CHB) using clinical variables. We aimed to develop an artificial intelligence (AI)-based HCC prediction model by incorporating imaging biomarkers derived from abdominal computed tomography (CT) images along with clinical variables.

Methods: An AI prediction model employing a gradient-boosting machine algorithm was developed utilizing imaging biomarkers extracted by DeepFore, a deep learning-based CT auto-segmentation software.

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This study aimed to compare the angular, platform, and apical deviation of zygoma implants placed with the aid of a dynamic navigation (DN) device compared with the implants placed freehand. Eight cadaver heads were used for the study. Preoperative cone beam computerized tomography (CBCT) scans were made for the heads, and an implant-planning software was used to plan zygoma implants bilaterally in each scanned head.

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  • The study investigates the impact of maintenance anaesthetics (propofol vs. desflurane) on acute kidney injury (AKI) following nephrectomy in patients with renal cell carcinoma.
  • A total of 317 patients were analyzed, with a 25% incidence of postoperative AKI, showing no significant difference between the propofol group (27%) and the desflurane group (23%).
  • The conclusion suggests that the choice of anaesthetic does not influence AKI risk, indicating that future research should focus on other modifiable factors contributing to AKI in these patients.
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Background/aims: We previously reported that patients with moderate-to-severe ulcerative colitis (UC) often experience common mental disorders (CMDs) such as anxiety and depression, necessitating immediate psychological interventions within the first 4 weeks of diagnosis. In this 3-year follow-up study of the MOSAIK cohort in Korea, we examined the effects of CMDs at initial diagnosis on clinical outcomes and health-related quality of life (HRQoL).

Methods: We examined differences in clinical outcomes (evaluated based on clinical response, relapse, hospitalization, and medication use) and HRQoL (assessed using the Inflammatory Bowel Disease Questionnaire [IBDQ] and Short Form 12 [SF-12]) according to Hospital Anxiety and Depression Scale (HADS) scores at diagnosis.

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Colon polyp detection and removal via colonoscopy are essential for colorectal cancer screening and prevention. This study aimed to develop a colon polyp detection program based on the RetinaNet algorithm and verify its clinical utility. To develop the AI-assisted program, the dataset was fully anonymized and divided into 10 folds for 10-fold cross-validation.

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Objective: This study aimed to compare the angular, platform, and apical deviation of zygoma implants placed with the aid of a dynamic navigation device compared to the implants placed freehand.

Methods: Eight cadaver heads were used for the study. Pre-operative CBCT scans were made for the heads, and an implant planning software was used to plan zygoma implants bilaterally in each scanned head.

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Oncogenic growth places great strain and dependence on the proteostasis network. This has made proteostasis pathways attractive therapeutic targets in cancer, but efforts to drug these pathways have yielded disappointing clinical outcomes. One exception is proteasome inhibitors, which are approved for frontline treatment of multiple myeloma.

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Low muscle mass is a risk factor for mortality in patients with chronic kidney disease (CKD). However, it is not clear to what extent low muscle mass contributes to this risk, either independently or in combination with metabolic abnormalities and frailty. This study used data from the National Health and Nutrition Examination Survey 1999-2006 and 2011-2018.

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  • A study in Korea assessed the safety and effectiveness of lenvatinib as a first-line treatment for patients with unresectable hepatocellular carcinoma, with a focus on adverse drug reactions (ADRs) and treatment outcomes.
  • Out of 658 patients treated with lenvatinib, 57.8% experienced ADRs, while 13.5% had severe ADRs (grade ≥3), including 1.2% reporting both asthenia and hepatic encephalopathy as the most common severe reactions.
  • The study found that 1.0% of patients had a complete response, 12.9% a partial response, and 45.2%
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Background: This study aimed to examine whether repeated measurements on noninvasive fibrosis scores during follow-up improve long-term nonalcoholic fatty liver disease (NAFLD) outcome prediction.

Methods: A cohort study of 2,280 NAFLD patients diagnosed at the Seoul National University Hospital from 2001 to 2015 was conducted. Multivariable Cox regression models with baseline and designated time-point measurements of the fibrosis-4 index (FIB-4) and NAFLD fibrosis score (NFS) were used to assess the association between these scores and overall mortality, liver-related outcomes, and cardiovascular events.

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  • The study explored the link between nonalcoholic fatty liver disease (NAFLD) and the risk of developing atrial fibrillation (AF), considering factors such as age and liver fibrosis.
  • Researchers analyzed data from over 3 million participants, categorizing them based on their NAFLD status and identifying new cases of AF over a median follow-up of 9.3 years.
  • The findings indicated that the risk of new-onset AF significantly increased with both the severity of NAFLD and the presence of advanced fibrosis, particularly among younger individuals aged 20-29.
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  • * Researchers analyzed data from nearly 4,800 patients and found that their model, named PLAN-B-CURE, outperformed existing prediction models significantly in various metrics.
  • * The results indicate that the PLAN-B-CURE model can be utilized for personalized monitoring of patients post-HBsAg seroclearance, improving long-term health management.
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The U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA) oversee pharmaceutical regulations, including orphan drugs targeting rare diseases with limited patient populations.

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Background: Intralesional methotrexate injection (IL-MTX) is an appropriate strategy for treating epithelial crateriform tumors (ECTs) when surgical excision can result in functional or cosmetic defects; however, not all ECTs are responsive to this treatment.

Objective: This study aimed to evaluate the effectiveness of IL-MTX for ECTs and to determine the differences in clinical response according to the pathological features.

Methods: The medical records of patients treated with IL-MTX for their ECTs were retrospectively reviewed.

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Background & Aims: The association between hepatitis B envelope antigen (HBeAg) seroclearance during long-term nucleos(t)ide analogue (NA) treatment and the risk of hepatocellular carcinoma (HCC) in patients with chronic hepatitis B (CHB) remains unclear. Here, we aimed to investigate the association of HBeAg seroclearance during potent NA treatment with the development of HCC and decompensated cirrhosis.

Methods: Using a multicenter historical cohort including 2,392 non-cirrhotic adult patients with HBeAg-positive CHB who initiated NA treatment with tenofovir or entecavir, the risk of HCC and decompensated cirrhosis was compared between patients who achieved HBeAg seroclearance within 36 months of NA treatment (the HBeAg-loss group) and those who did not (the HBeAg-maintained group), using inverse probability of treatment weighting.

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  • Long COVID is characterized by persistent fatigue, and this study explored the effectiveness of Myeloph (MYP) in alleviating this symptom using a group of subjects with significant fatigue scores.
  • Participants (49) took 2,000 mg of MYP daily for 4 weeks, leading to notable reductions in fatigue levels and improvements in quality of life metrics.
  • The results suggest MYP could help manage fatigue from Long COVID, but more extensive studies are needed to confirm these findings.
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  • - This study investigated the metabolic effects of different antiviral treatments for chronic hepatitis B (specifically focusing on tenofovir alafenamide [TAF]) using a 15-year cohort of patients in Korea, separated into two groups: those on a single antiviral and those who switched antivirals.
  • - After applying statistical methods, the findings revealed significant changes in cholesterol levels among groups, with TAF causing an increase in total cholesterol and a notable rise in atherosclerotic cardiovascular disease (ASCVD) risk compared to other treatments.
  • - In patients who switched from tenofovir disoproxil fumarate (TDF) to TAF, there was a significant increase in total cholesterol post-switch, highlighting the potential metabolic
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Objectives: Catheter malposition after subclavian venous catheterization (SVC) is not uncommon and can lead to serious complications. This study hypothesized that the left access is superior to the right access in terms of catheter malposition after ultrasound-guided infraclavicular SVC due to the asymmetry of the bilateral brachiocephalic veins.

Design: Parallel-armed randomized controlled trial.

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  • Sclerotherapy, particularly using bleomycin, is an effective nonsurgical treatment for digital mucous cysts (DMC), showing better side effects compared to traditional agents.
  • A study compared the effectiveness and safety of bleomycin intralesional injection (ILI) to corticosteroid ILI and surgical excision for DMC treatment, finding bleomycin ILI and surgical excision to be more effective than corticosteroids.
  • Patient satisfaction was highest with bleomycin ILI, indicating it's a safe and effective option for DMC management, offering results comparable to surgical excision without significant adverse effects.
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Purpose: Channelled blades have the advantage of avoiding stylet use and potential airway injury during videolaryngoscopic intubation. Nevertheless, the effectiveness of channelled Macintosh-type blades has not yet been fully established. We sought to assess the utility of channelled Macintosh-type blades for videolaryngoscopic intubation under cervical spine immobilization.

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Background/aims: Chronic hepatitis B (CHB) is related to an increased risk of extrahepatic malignancy (EHM), and antiviral treatment is associated with an incidence of EHM comparable to controls. We compared the risks of EHM and intrahepatic malignancy (IHM) between entecavir (ETV) and tenofovir disoproxil fumarate (TDF) treatment.

Methods: Using data from the National Health Insurance Service of Korea, this nationwide cohort study included treatment-naïve CHB patients who initiated ETV (n=24,287) or TDF (n=29,199) therapy between 2012 and 2014.

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  • A study evaluated the effectiveness of no-touch radiofrequency ablation (NT-RFA) with twin cooled wet electrodes in patients with recurrent hepatocellular carcinoma (HCC) after prior treatments, involving 102 patients and 112 tumors.
  • The study found that 21.4% of cases needed to switch to conventional RFA, but overall treatment success was high at 99.1%, with no major complications reported.
  • Mid-term analyses showed low rates of local tumor progression (LTP), with significant predictive factors identified, including the number of prior treatments and certain patient health indicators.
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  • A study was conducted to explore the relationship between serum gamma-glutamyl transferase (GGT) levels and mortality rates in patients with type 2 diabetes, utilizing a large Korean health-screening database.
  • Out of nearly 10 million participants observed over an average of 8.1 years, higher GGT levels were linked to increased all-cause mortality and specific causes of death, such as cardiovascular diseases, cancer, and liver disease.
  • The findings suggest that measuring serum GGT levels could be beneficial for evaluating mortality risk in individuals with type 2 diabetes.
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