Publications by authors named "Hye-Sook Han"

Background: Esophagogastric and pancreaticobiliary cancers are associated with chronic blood loss, poor nutrition, and surgical interventions that interfere with iron absorption. Patients with these cancers often have a higher incidence of chemotherapy-induced anemia (CIA) than patients with other malignancies.

Objectives: To investigate the efficacy of intravenous iron or erythropoietin-stimulating agents (ESA) for CIA treatment in patients with esophagogastric or pancreaticobiliary cancer.

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  • The study explores the potential of a new DNA methylation assay called Epi-TOP for diagnosing pancreatic ductal adenocarcinoma (PDAC) using both tissue and plasma samples.
  • It involved 46 patients and demonstrated that a combination of seven specific epigenetic biomarkers could accurately differentiate PDAC from normal pancreatic tissues with high sensitivity (93.5%) and specificity (96.7%).
  • The assay also showed promising results for analyzing cell-free DNA (cfDNA) from plasma, achieving 90% sensitivity and 95% specificity, suggesting its potential as a blood-based diagnostic tool for PDAC.
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  • Hand-foot syndrome (HFS) and hand-foot skin reaction (HFSR) are common side effects of cancer treatment that negatively affect patients' quality of life, and a study tested an anti-inflammatory cream called ATPC for treatment.
  • The study involved 60 patients with mild HFS/HFSR who were randomly assigned to receive either the ATPC or a placebo, and their conditions were monitored over 9 weeks.
  • Results indicated that ATPC significantly reduced the incidence of more severe HFS/HFSR compared to the placebo group, suggesting it could be an effective treatment for managing these side effects in cancer patients.*
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  • The study investigates how PRMT6, a protein linked to various metabolic processes, interacts with and regulates LXR alpha, which is important for hepatic lipogenesis and lipid metabolism.
  • Researchers found that PRMT6 enhances the promoter activity of SREBP-1c by binding to LXR alpha and methylating it, leading to increased lipogenesis in the liver.
  • The findings suggest that PRMT6 plays a significant role in controlling lipid accumulation in the liver, which could have implications for conditions like non-alcoholic fatty liver disease (NAFLD).
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Background: Immune checkpoint inhibitor (ICI) or irinotecan-based chemotherapy is frequently used after failure of second-line paclitaxel plus ramucirumab treatment for patients with locally advanced unresectable or metastatic advanced gastric cancer (AGC). This study aimed to compare the efficacy between ICI and irinotecan-based chemotherapy as third-line treatment in patients with AGC.

Methods: We retrospectively reviewed patients with AGC, whose third-line treatment started between July 2019 and June 2021 at 17 institutions in Korea.

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Liquid biopsy, a minimally invasive procedure that causes minimal pain and complication risks to patients, has been extensively studied for cancer diagnosis and treatment. Moreover, it facilitates comprehensive quantification and serial assessment of the whole-body tumor burden. Several biosources obtained through liquid biopsy have been studied as important biomarkers for establishing early diagnosis, monitoring minimal residual disease, and predicting the prognosis and response to treatment in patients with cancer.

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Background: Non-coding microRNAs (miRNAs) play critical roles in tumor progression and hold great promise as therapeutic agents for multiple cancers. MicroRNA 29a (miR-29a) is a tumor suppressor miRNA that inhibits cancer cell growth and tumor progression in non-small cell lung cancer. Carcinoembryonic antigen-related cell adhesion molecule 6 (CEACAM6), which plays an important role in lung cancer progression, has been identified as a target of miR-29a.

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cAMP response element-binding protein (CREB) regulated transcriptional coactivator 2 (CRTC2) is a critical transcription factor that maintains glucose homeostasis by activating CREB. Energy homeostasis is maintained through multiple pathways; therefore, CRTC2 may interact with other transcription factors, particularly under metabolic stress. CRTC2 liver-specific KO mice were created, and the global proteome, phosphoproteome, and acetylome from liver tissue under high-fat diet conditions were analyzed using liquid chromatography-tandem mass spectrometry and bioinformatics analysis.

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Adipose tissues are central in controlling metabolic homeostasis and failure in their preservation is associated with age-related metabolic disorders. The exact role of mature adipocytes in this phenomenon remains elusive. Here we describe the role of adipose branched-chain amino acid (BCAA) catabolism in this process.

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Purpose: This study evaluated whether combination therapy is more effective than monotherapy in elderly patients with metastatic or recurrent gastric cancer (MRGC) as first-line chemotherapy.

Materials And Methods: Elderly (≥ 70 years) chemo-naïve patients with MRGC were allocated to receive either combination therapy (group A: 5-fluorouracil [5-FU]/oxaliplatin, capecitabine/oxaliplatin, capecitabine/cisplatin, or S-1/cisplatin) or monotherapy (group B: 5-FU, capecitabine, or S-1). In group A, starting doses were 80% of standard doses, and they could be escalated to 100% at the discretion of the investigator.

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Background: Exposure to cold temperature stimulates the sympathetic nervous system that activates β-adrenergic receptor signals in brown and beige adipocytes, leading to the induction of adaptive thermogenesis in mammals. Prominin-1 (PROM1) is a pentaspan transmembrane protein that is widely identified as a marker for stem cells, although the role of this protein as a regulator of many intracellular signaling cascades has been recently delineated. The main focus of the current study is to identify the previously unknown role of PROM1 in beige adipogenesis and adaptive thermogenesis.

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Gastric cancer is one of the most common cancers in Korea and the world. Since 2004, this is the 4th gastric cancer guideline published in Korea which is the revised version of previous evidence-based approach in 2018. Current guideline is a collaborative work of the interdisciplinary working group including experts in the field of gastric surgery, gastroenterology, endoscopy, medical oncology, abdominal radiology, pathology, nuclear medicine, radiation oncology and guideline development methodology.

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Background: Immune checkpoint inhibitor (ICI)-induced rheumatic immune-related adverse events (irAEs) have been infrequently reported, and the treatment of severe or refractory arthritis as irAEs has not been established yet.

Case Summary: The patient was a 67-year-old man with a history of well-controlled foot psoriasis who presented with polyarthralgia. He had received pembrolizumab for metastatic gastric adenocarcinoma 2 mo previously.

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The prognosis of early gastric cancer (EGC) with submucosal invasion is favorable; however, several cases of recurrence have been reported even after curative gastrectomy. This study aimed to investigate risk factors and evaluate the clinical significance of the number of retrieved lymph nodes (LNs) in EGC with submucosal invasion. We retrospectively analyzed the data of 443 patients with gastric cancer with submucosal invasion after curative gastrectomy for recurrent risk factors.

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  • Electronic medical records (EMRs) are crucial for gathering real-world data (RWD) to assess the effectiveness and safety of cancer treatments, with this study focusing on drugs like ramucirumab plus paclitaxel and trastuzumab emtansine in South Korea.
  • A systematic data collection procedure was established, which included evaluating the reliability of both investigators and the data collected, resulting in high reliability scores and a significant reduction in missing data.
  • The findings highlight the importance of structured data collection in real-world studies, ultimately creating a reliable framework for evaluating cancer drug efficacy and safety.
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  • The new 5th World Health Organization classification for myelodysplastic syndrome (MDS)-associated acute myeloid leukemia (AML) focuses on mutations in myelodysplasia-related (MR) genes instead of just morphological features.
  • In a study with 135 newly diagnosed AML patients, those classified under the 5th edition (AML-MR) were generally older and had worse treatment outcomes compared to those classified under the previous edition (AML-MRC).
  • Key prognostic factors affecting survival included age over 75 years, prior MDS, specific chromosome abnormalities, and mutations in KRAS and ZSZR2, with ZSZR2 mutations noted as significant independent prognostic factors.
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Purpose: Although obesity is an important risk factor for cancer incidence, the effect of body mass index (BMI) on health-related quality of life (HRQoL) after cancer treatment remains unknown. This population-based cross-sectional study assessed different levels of BMI as an important factor associated with impaired HRQoL in long-term cancer survivors.

Methods: The study enrolled 1104 cancer survivors from the fourth to seventh Korea National Health and Nutrition Examination Surveys (KNHANES 2007-2018) who were alive at least 5 years after their cancer diagnoses.

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Background: A subgroup analysis of data from a nationwide study (KCSG-ST19-16) was performed to evaluate the efficacy and safety of second-line ramucirumab plus paclitaxel treatment in patients with human epidermal growth factor receptor 2 (HER2)-positive advanced gastric or gastro-esophageal junction (GEJ) adenocarcinoma.

Methods: The KCSG-ST19-16 study enrolled a total of 1063 patients from 56 hospitals in South Korea with advanced gastric or GEJ adenocarcinoma, who had received second-line treatment with ramucirumab plus paclitaxel. HER2 status was known for 994 (93.

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Objective: Diet-induced obesity is often associated with nonalcoholic fatty liver disease (NAFLD), which instigates severe metabolic disorders, including cirrhosis, hepatocellular carcinoma, and type 2 diabetes. We have shown that hepatic depletion of CREB regulated transcription co-activator (CRTC) 2 protects mice from the progression of diet-induced fatty liver phenotype, although the exact mechanism by which CRTC2 modulates this process is elusive to date. Here, we investigated the role of hepatic CRTC2 in the instigation of NAFLD in mammals.

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Purpose: Histologic change is a resistant mechanism in lung cancer. The most common histological change is the switch from adenocarcinoma (AdenoCa) to small cell carcinoma (SCC) against to tyrosine kinase inhibitors (TKI). However, it is not clear whether other treatment modalities are involved in the histologic changes.

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Background: Ramucirumab as monotherapy or in combination with paclitaxel is a second-line treatment option recommended for patients with locally advanced unresectable or metastatic gastric or gastroesophageal junction (GEJ) adenocarcinoma. However, real-world data from large study cohorts focused on ramucirumab plus paclitaxel in gastric cancer are limited.

Methods: The study population comprised all patients with gastric or GEJ cancer who received ramucirumab plus paclitaxel in South Korea between 1 May 2018 and 31 December 2018.

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  • The study examined the role of soluble E-cadherin and angiopoietin-2 (ANGPT2) in the plasma and malignant ascites of colorectal cancer patients with peritoneal carcinomatosis (PC).
  • It found that levels of soluble E-cadherin were higher in plasma than in malignant ascites, while ANGPT2 levels were significantly elevated in the ascites and linked to poorer survival outcomes.
  • The findings suggest that both soluble E-cadherin and ANGPT2 could serve as potential biomarkers for predicting clinical outcomes in these patients.
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