Publications by authors named "Jang H Cho"

Introduction: There is a lack of evidence to support the effectiveness of prolonged β-blocker therapy after stabilisation of patients with acute myocardial infarction (AMI) without heart failure (HF) or left ventricular systolic dysfunction.

Methods And Analysis: The SMart Angioplasty Research Team: DEcision on Medical Therapy in Patients with Coronary Artery DIsease or Structural Heart Disease Undergoing InterventiON (SMART-DECISION) trial is a multicentre, prospective, open-label, randomised, non-inferiority trial designed to determine whether discontinuing β-blocker therapy after ≥1 year of maintenance in stabilised patients after AMI is non-inferior to continuing it. Patients eligible for participation are those without HF or left ventricular systolic dysfunction (ejection fraction >40%) who have been continuing β-blocker therapy for ≥1 year after AMI.

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  • - The study investigates the effectiveness of durvalumab maintenance therapy in patients with unresectable locally advanced non-small cell lung cancer (NSCLC) after receiving concurrent chemoradiotherapy (CCRT), comparing those with specific genetic mutations to those without.
  • - A total of 339 patients were analyzed, revealing similar progression-free survival (PFS) rates of 21.4 months for wild-type and 21.0 months for mutant groups, while significant differences in PFS were noted based on programmed death-ligand 1 (PD-L1) expression levels.
  • - The findings suggest that while genetic mutations did not significantly alter outcomes, PD-L1 expression levels had a notable impact on PFS, highlighting the importance
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  • Patients undergoing complex high-risk PCI are still at high risk for adverse events despite standard dual antiplatelet therapy (DAPT).
  • The TAILORED-CHIP trial aims to compare a tailored antiplatelet strategy with an early escalation and late de-escalation approach against conventional DAPT.
  • The study's primary focus is on the net clinical outcome, measuring serious events like death, heart attack, stroke, and significant bleeding within 12 months after the procedure.
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Iliac artery angioplasty with stenting is an effective alternative treatment modality for aortoiliac occlusive diseases. Few randomized controlled trials have compared the efficacy and safety between self-expandable stent (SES) and balloon-expandable stent (BES) in atherosclerotic iliac artery disease. In this randomized, multicenter study, patients with common or external iliac artery occlusive disease were randomly assigned in a 1:1 ratio to either BES or SES.

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Background: Patients with sensitization and blood type O experience increased waiting times for deceased-donor kidney transplantation (DDKT). While allocation benefits are needed to resolve inequity in DDKT opportunity, whether DDKT has comparable outcomes in this disadvantaged population requires further study. This study assessed these outcomes and developed a new allocation system that balances equity and utility.

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  • The study aimed to examine how common osteosarcopenia is among patients who have recently suffered an acute stroke and to identify related risk factors.
  • A total of 224 patients were analyzed, revealing that 46.9% had osteoporosis, 50.9% had sarcopenia, and 28.6% had both conditions (osteosarcopenia), with significant differences in demographics and functional abilities among those affected.
  • Key risk factors for osteosarcopenia included older age (≥65 years), being female, and having a lower BMI, indicating the need for thorough assessments to improve rehabilitation strategies for stroke survivors.
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  • Current guidelines suggest complete revascularization (CR) for stable patients with ST-segment elevation myocardial infarction (STEMI) and multivessel coronary artery disease (MVD), but the best timing for the procedure is still unclear.
  • The OPTION-STEMI trial investigates whether immediate CR during a primary angioplasty is as effective as in-hospital staged CR, using fractional flow reserve (FFR) assessments for certain lesions.
  • The trial enrolled patients with significant non-infarct-related artery lesions, aiming to measure outcomes like death and myocardial infarction one year post-randomization, with results expected in mid-2025.
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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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There are limited data on outcomes after implantation of everolimus-eluting stents (EES) in East Asian patients with small vessel coronary lesions. A total of 1,600 patients treated with XIENCE EES (Abbott Vascular, CA, USA) were divided into the small vessel group treated with one ≤2.5 mm stent (n=119) and the non-small vessel group treated with one ≥2.

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Amputees typically experience changes in residual limb volume in their daily lives. It causes an uncomfortable fit of the socket by applying high pressure on the sensitive area of the residual limb or by loosening the socket. In this study, we developed a transfemoral prosthetic socket for above-the-knee amputees that ensures a good socket fit by maintaining uniform and constant contact pressure despite volume changes in the residual limb.

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Objective: To evaluate the feasibility and usability of cost-effective complex upper and lower limb robot-assisted gait training in patients with stroke using the GTR-A, a foot-plate based end-effector type robotic device.

Methods: Patients with subacute stroke (n=9) were included in this study. The enrolled patients received 30-minute robot-assisted gait training thrice a week for 2 weeks (6 sessions).

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Background: We report an enhancement of the dorsal roots on gadolinium-enhanced cervical magnetic resonance imaging (MRI) in a patient with acute autonomic and sensory neuropathy (AASN).

Case Presentation: A 38-year-old woman visited our university hospital for dizziness and fainting while rising from sitting or lying down and a tingling sensation in the whole body, including her limbs, torso, and abdomen, which was sustained for 15 days. The patient had hyperalgesia in nearly her entire body and slight motor weakness in her bilateral upper and lower limbs.

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  • - This paper examines the necessity of a precise motion-tracking system for robotic computer-assisted implant surgery to prevent complications from inaccurate implant placement.
  • - The authors categorize key features of the motion-tracking system into workspace, sampling rate, accuracy, and back-drivability, and establish requirements for each to meet performance standards.
  • - A new 6-DOF motion-tracking system is introduced, showcasing high accuracy and back-drivability, with experimental results validating its effectiveness for the surgical application.
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Background: We aimed to compare clinical outcomes between immediate and staged complete revascularization in primary percutaneous coronary intervention (PCI) for treating ST-segment elevation myocardial infarction (STEMI) and multivessel disease (MVD).

Methods: A total of 248 patients were enrolled in a prospective, randomized, and multicenter registry. Immediate revascularization was defined as one-time PCI of culprit and non-culprit lesions at the initial procedure.

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  • A case is reported of a patient developing complex regional pain syndrome (CRPS) in the upper extremities after receiving a COVID-19 vaccination.
  • The patient experienced severe arm pain and swelling shortly after vaccination, leading to the diagnosis of postvaccination CRPS.
  • The condition may have been triggered by an immune-mediated inflammatory response to the vaccine, as the patient had a predisposition to CRPS due to underlying inflammatory immunity.
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Introduction: Drug-eluting stents (DES) significantly improved angiographic and clinical outcomes compared with bare-metal stents in patients with diabetes. The clinical effects of BioMime sirolimus-eluting stent (SES) in patients with diabetes have not been evaluated. Therefore, we compared the efficacy of BioMime DES in coronary artery disease (CAD) patients with versus without diabetes.

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Importance: Although P2Y12 inhibitor monotherapy after a minimum period of dual antiplatelet therapy (DAPT) is a well-known way to reduce the risk of bleeding after percutaneous coronary intervention (PCI), data comparing long-term clinical outcomes between P2Y12 inhibitor monotherapy and extended DAPT in patients undergoing PCI have been unavailable.

Objective: To identify the long-term safety and efficacy of P2Y12 inhibitor monotherapy following 3 months of DAPT after PCI.

Design, Setting, And Participants: The Smart Angioplasty Research Team: Comparison Between P2Y12 Antagonist Monotherapy and Dual Antiplatelet Therapy in Patients Undergoing Implantation of Coronary Drug-Eluting Stents (SMART-CHOICE) trial was an open-label, noninferiority, randomized clinical trial, enrolling patients who underwent PCI with drug-eluting stent at 33 hospitals in Korea from March 2014 through July 2017.

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  • - The study investigates the effectiveness and safety of lazertinib, a third-generation EGFR inhibitor, when combined with stereotactic body radiation therapy (SBRT) for treating advanced non-small cell lung cancer (NSCLC) in patients with EGFR mutations who have up to 5 metastatic sites.
  • - Patients with confirmed EGFR-mutated adenocarcinoma will be divided into two groups: one receiving just lazertinib and the other receiving lazertinib alongside SBRT, with progression-free survival (PFS) as the main goal of the study.
  • - Ongoing since January 2021 at seven locations in South Korea, the trial aims to provide significant insights into how this combination therapy could improve
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We describe the case of a 79-year-old man who presented with progressive aggravation of severe axial neck pain and fever 3 days after transurethral resection of the prostate (TURP), despite maintaining neutral neck posture during surgery. Laboratory examination revealed markedly elevated C-reactive protein levels and erythrocyte sedimentation rates. Computed tomography revealed crown-like calcifications surrounding the odontoid process.

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Patients with spinal cord injury (SCI) experience a high osteoporosis incidence, which increases fracture risk. Recently, a sclerostin antibody was introduced as a target biomarker to treat osteoporosis. We aimed to determine the serum concentration of sclerostin and factors affecting its concentration over time.

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Background: Intraarticular (IA) corticosteroid injection is commonly performed in patients with primary frozen shoulder (PFS). However, the best administration site remains controversial.

Objectives: To compare the efficacy of rotator interval (RI) vs posterior capsule (PC) approach for ultrasound-guided corticosteroid injections into the glenohumeral joint of patients with PFS.

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Lymphedema causes skin and subcutaneous fibrosis. However, quantitative methods for estimating the severity of fibrosis due to lymphedema have not been established. We evaluated skin stiffness using shear-wave elastography (SWE) and aimed to identify stiffness-associated factors in patients with breast cancer-related lymphedema (BCRL).

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The cellular processes that govern tumor resistance to immunotherapy remain poorly understood. To gain insight into these processes, here we perform a genome-scale CRISPR activation screen for genes that enable human melanoma cells to evade cytotoxic T cell killing. Overexpression of four top candidate genes (CD274 (PD-L1), MCL1, JUNB, and B3GNT2) conferred resistance in diverse cancer cell types and mouse xenografts.

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HLA-DRB1*13:320 differs from HLA-DRB1*13:02:01:02 by one nucleotide substitution in codon 22 in exon 2.

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The ongoing global administration of vaccines for coronavirus disease 2019 (COVID-19) means that increasing numbers of patients are likely to present with post-vaccination complications. We describe the first reported case of neuralgic amyotrophy (NA) involving the lumbosacral plexus occurring after AstraZeneca COVID-19 vaccination. The patient presented with acute-onset leg paralysis following administration of the vaccine.

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