Publications by authors named "Hyung-Don Kim"

Introduction: Atezolizumab-bevacizumab (Atezo-Bev) has become the standard first-line treatment for patients with unresectable hepatocellular carcinoma (uHCC). However, data on subsequent treatment after Atezo-Bev failure are lacking. We aimed to investigate the efficacy and safety of regorafenib for uHCC progression after first-line Atezo-Bev.

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Background: Homologous recombination repair (HRR) gene mutations contribute to genomic instability. However, their clinical value in immune checkpoint inhibitor (ICI)-based treatments in gastric cancer remains unclear. Therefore, this study aims to investigate the efficacy of nivolumab plus chemotherapy according to the HRR mutation status in patients with advanced gastric cancer.

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Background: This multicenter phase Ib/II trial aimed to evaluate the safety and efficacy of combining durvalumab, tremelimumab, and paclitaxel as second-line treatment for biomarker-selected patients with metastatic gastric cancer.

Methods: In phase Ib, the standard 3 + 3 dose escalation method was used. Durvalumab and tremelimumab were administered every 4 weeks for 13 and 4 cycles, respectively, combining paclitaxel 80 mg/m (dose level 2) or 60 mg/m (dose level 1) on days 1, 8, and 15.

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Background: Epstein-Barr virus (EBV) positivity is a potential predictive biomarker for immune checkpoint inhibitors (ICIs) in gastric cancer patients, but its value in first-line ICI-based chemotherapy remains unclear. This study aimed to evaluate the predictive value of EBV positivity in patients treated with first-line nivolumab plus chemotherapy.

Methods: This single-center study included advanced gastric cancer patients treated with first-line nivolumab plus chemotherapy (n = 293).

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Introduction: Proteinuria presents a challenging complication during systemic therapy for hepatocellular carcinoma (HCC). This study aims to identify risk factors for proteinuria in patients with HCC treated with atezolizumab plus bevacizumab (Atezo/Bev) or lenvatinib (LEN) as first-line systemic treatment.

Methods: A retrospective analysis was conducted on 622 consecutive patients with unresectable HCC who received Atezo/Bev or LEN as first-line systemic treatment between October 2013 and October 2022.

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Background: Bemarituzumab, a monoclonal antibody targeting fibroblast growth factor receptor 2b (FGFR2b), is under evaluation in phase 3 trials of gastric cancer (GC) trials. However, data on the characteristics, prognostic significance, and heterogenous expression patterns of FGFR2b overexpression in GC remain limited. Therefore, this study aims to investigate the clinicopathologic characteristics and survival outcomes of FGFR2b-positive GC, along with the expression concordance across biopsy, surgical, and metastatic specimens.

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Introduction: This study aimed to compare the effectiveness outcomes of Child-Pugh class A patients with unresectable hepatocellular carcinoma (HCC) treated with first-line atezolizumab-bevacizumab and lenvatinib.

Methods: This retrospective study included patients with Child-Pugh A unresectable HCC who were administered first-line treatment with either atezolizumab-bevacizumab (n = 368) or lenvatinib (n = 229) at Asan Medical Center (Seoul, Korea). Effectiveness outcomes were analyzed along with the inverse probability treatment weighting (IPTW) analysis to adjust for potential confounders.

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BRAF-mutated colorectal cancer correlates with poor prognosis and limited response to standard treatments. Combining immune checkpoint inhibitors with BRAF/MEK inhibitors shows promise against BRAF-mutant melanoma in both preclinical and clinical trials. Therefore, we hypothesized that the treatment would be effective against BRAF-mutant colorectal cancer.

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Background: Based on the phase 3 PRODIGY study, neoadjuvant docetaxel, oxaliplatin, and S-1 (DOS) have emerged as a viable treatment option for Asian patients with resectable locally advanced gastric cancer (LAGC). This phase 2 study evaluated the efficacy and safety of combining neoadjuvant durvalumab with DOS, followed by surgery and adjuvant durvalumab plus S-1 chemotherapy, for resectable LAGC.

Methods: Patients with LAGC with cT2/3N+or cT4Nany tumors were enrolled in this study.

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Background: No established biomarker exists for specific myeloid cell populations or in gastric cancer. This study aimed to explore the prognostic and immunological relevance of plasma translationally controlled tumor protein (TCTP) in patients with advanced gastric cancer treated with an immune checkpoint inhibitor and/or cytotoxic chemotherapy.

Methods: Plasma samples were prospectively collected from the cohorts of patients with gastric cancer treated with first-line fluoropyrimidine plus platinum chemotherapy (n=143, cohort 1) and third-line nivolumab (n=165, cohort 2).

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Purpose: Atezolizumab-bevacizumab (AB) is the established first-line systemic therapy for patients with unresectable hepatocellular carcinoma (uHCC). However, the optimal second-line treatment for patients unresponsive to AB remains undefined.

Patients And Methods: This multicenter, retrospective study included patients with uHCC who underwent second-line treatment with lenvatinib (LEN) or sorafenib (SOR) after AB failure at two academic centers between June 2018 and November 2023.

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Gastric cancer is one of the most common cancers in both Korea and worldwide. Since 2004, the Korean Practice Guidelines for Gastric Cancer have been regularly updated, with the 4th edition published in 2022. The 4th edition was the result of a collaborative work by an interdisciplinary team, including experts in gastric surgery, gastroenterology, endoscopy, medical oncology, abdominal radiology, pathology, nuclear medicine, radiation oncology, and guideline development methodology.

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(1) Background: (AM) has antioxidant and anti-inflammatory effects, but its specific mechanism of action in the brain is still unclear. In this study, we developed a roasting process to maximize the cognitive improvement impact of AM. We focused on enhancing physiological activity to enhance the brain neuron protection effect and alleviate neuronal damage caused by neurodegenerative diseases.

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Background: Claudin 18.2 has emerged as a viable therapeutic target in gastric cancer; however, its clinical relevance in the context of immune checkpoint inhibitor-based chemotherapy is not known. This study aimed to investigate the efficacy of nivolumab plus chemotherapy according to claudin 18.

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Article Synopsis
  • Effective management of skin rash, a common side effect of imatinib in GIST treatment, can be achieved with systemic steroids, which allow for the continuation of imatinib dosing without interruptions.
  • A study involving 277 patients found that 30 (10.8%) required systemic steroids for severe skin rash, but there was no significant difference in progression-free survival (PFS) or overall survival (OS) between those using steroids and those who did not.
  • Results showed that while the steroids didn't impact the overall effectiveness of imatinib, patients in the steroid group who maintained their imatinib dosage had improved survival trends compared to those who had dosage interruptions.
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Article Synopsis
  • Atezolizumab-bevacizumab is a common first treatment for liver cancer that can't be removed by surgery.
  • Researchers studied how different causes of liver disease, like viruses or metabolism issues, affect the treatment's effectiveness on 390 patients.
  • They found that the treatment worked similarly well for everyone, but patients with worse liver function before treatment had less chance of getting more therapy after the disease got worse.
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Background/objectives: (PG) is used in traditional oriental medicine to treat several ailments.

Methods: The study investigated the anti-inflammatory and neuroprotective effects of PGW () extract in Aβ25-35-induced inflammation in BV2 microglia cells.

Result: PGW demonstrated significant inhibition of nitric oxide (NO) production, with reductions of 30.

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Article Synopsis
  • Anti-PD1/L1 immunotherapy has shown promise when combined with chemotherapy for advanced biliary tract cancer (BTC), yet no predictive biomarker has been identified for its effectiveness.
  • Researchers analyzed tumor-infiltrating lymphocytes (TIL) using AI-powered immune phenotype (AI-IP) analysis on tissue samples from 339 advanced BTC patients undergoing anti-PD1 treatment.
  • The study found that patients with an "inflamed" immune phenotype (high TIL) had significantly better treatment responses and survival rates compared to those with "noninflamed" phenotypes, suggesting AI-IP could be a useful predictor of outcomes for anti-PD1 therapy in BTC.
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Claudin 18.2 has emerged as a viable therapeutic target in gastric cancer (GC), but little is known about the heterogeneity of its expression in GC. This study investigated the heterogeneity of claudin 18.

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Article Synopsis
  • Next-generation sequencing (NGS) has become essential in cancer care for identifying genetic alterations that can inform treatment decisions.
  • The application of NGS is expanding to include support in pathological diagnosis and understanding resistance mechanisms in cancer.
  • Upcoming recommendations aim to provide guidance on using NGS in solid tumors, categorize actionable genes by cancer type, and include insights on important biomarkers for circulating tumor DNA testing.
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Article Synopsis
  • The phase III PRODIGY study found that neoadjuvant chemotherapy with docetaxel, oxaliplatin, and S-1 (DOS), followed by surgery and adjuvant S-1, improved progression-free survival (PFS) in patients with resectable locally advanced gastric cancer (LAGC).
  • Long-term follow-up showed that the group receiving neoadjuvant DOS (CSC) had significantly better overall survival (OS) rates compared to those who underwent surgery followed by adjuvant S-1 (SC), with 8-year OS rates of 63.0% vs. 55.1%.
  • The results suggest that neoadjuvant DOS chemotherapy should be considered a standard treatment
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Alzheimer's disease (AD) is a progressive neurodegenerative disease accompanied by irreversible cognitive impairment. A deleterious feedback loop between oxidative stress and neuroinflammation in early AD exacerbates AD-related pathology. Platycodon grandiflorum root extract (PGE) has antioxidant and anti-inflammatory effects in several organs.

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