Publications by authors named "Im Y"

With the increasing maturity of genetic profiling, an essential and routine task in cancer research is to model disease outcomes/phenotypes using genetic variables. Many methods have been successfully developed. However, oftentimes, empirical performance is unsatisfactory because of a "lack of information.

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Background: The World Health Organization's fifth edition of tumor series classification was published in 2019 and adopted the term 'Neuroendocrine neoplasm (NEN)' to encompass all tumor classes with predominant neuroendocrine differentiation (NED). Based on the updated classification of the NEN, we conducted a case series using the Clinical Data Warehouse platform of SMC.

Methods: In this retrospective study, breast NENs and invasive breast carcinomas no special type (IBCNST) with NED, were defined as 'NENS'.

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Introduction: Guideline-discordant low-dose computed tomography (LDCT) screening may cause lung cancer (LC) overdiagnosis, but its extent and consequences are unclear. This study aimed to investigate the prevalence of self-initiated, non-reimbursed LDCT screening in a predominantly non-smoking population and its impact on LC epidemiology and healthcare utilization.

Methods: This nationwide cohort study analyzed data from Korea's National Health Information Database and 11 academic hospital screening centers (1999-2022).

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Background: There is an urgent need to better understand the diverse presentations, risk factors, and outcomes of immune checkpoint inhibitor (ICI)-associated cardiovascular toxicity. There remains a lack of consensus surrounding cardiovascular screening, risk stratification, and clinical decision-making in patients receiving ICIs.

Methods: We conducted a single center retrospective cohort study including 2165 cancer patients treated with ICIs between 2013 and 2020.

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Article Synopsis
  • Perineural tumor spread (PNTS) to the brachial plexus is a rare condition often occurring years after the initial cancer diagnosis, primarily leading to severe neurological outcomes.
  • A study of seven patients revealed that they typically presented with unilateral pain, paresthesia, and eventual motor weakness, with imaging techniques like MRI and PET/CT showing significant abnormalities in the brachial plexus.
  • Despite attempts at treatment, the prognosis was poor, with six out of seven patients dying within 19 months of PNTS diagnosis, highlighting the need for heightened awareness and comprehensive imaging for early detection.
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This study aimed to explore the experience of family-centered care (FCC) for high-risk infants admitted to the neonatal intensive care unit (NICU) among their parents and healthcare providers (HCPs) using the grounded theory methodology to understand the processes and interactions involved. By employing the grounded theory approach described by Corbin and Strauss, in-depth interviews were conducted with parents and HCPs experienced in NICU settings. Participants were selected via theoretical and snowball sampling, and data were managed and analyzed concurrently using MAXQDA software.

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Background: Clonal hematopoiesis of indeterminate potential (CHIP) has been shown to increase all-cause mortality and risk of cardiomyopathy in patients with solid malignancies. CHIP has also been shown to increase T cell activation in heart failure patients. It is unclear whether CHIP can affect the risk of immune checkpoint inhibitor (ICI) myocarditis in patients with cancer treated with immunotherapy.

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Background: Speech sound disorders (SSDs) are common communication challenges in children, typically assessed by speech-language pathologists (SLPs) using standardized tools. However, traditional evaluation methods are time-intensive and prone to variability, raising concerns about reliability.

Objective: This study aimed to compare the evaluation outcomes of SLPs and an automatic speech recognition (ASR) model using two standardized SSD assessments in South Korea, evaluating the ASR model's performance.

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  • Advances in deep learning, specifically using a technique called SPHARM-Net, show potential in predicting clinical factors from brain MRI images.
  • The study utilized MRI-derived metrics like cortical curvature and thickness to predict age, sex, and Alzheimer's disease.
  • SPHARM-Net achieved strong classification accuracy for sex (91%) and age (average error of 2.97 years) while also performing well for Alzheimer's classification (86%), suggesting it could be useful for future clinical applications.
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  • The study investigates the relationship between preserved ratio impaired spirometry (PRISm) and mortality rates in individuals over 40 years old who underwent health screenings from 2003 to 2020.
  • Participants were divided into three groups based on lung function: normal, PRISm with normal forced vital capacity (FVC), and PRISm with low FVC.
  • Results show that individuals with PRISm, especially those with low FVC, have a significantly higher risk of death compared to those with normal lung function.
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  • * The study involved 1,526 COPD patients who began MVPA and 4,516 who did not, revealing significant decreases in future inhaled corticosteroid (ICS) usage (HR 0.83) and severe exacerbations (HR 0.81) for those who engaged in MVPA over a median follow-up of 3 years.
  • * Results were consistent across various demographics, suggesting that adding MVPA to their treatment could enhance health outcomes for
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Purpose: This study aimed to evaluate the clinical outcomes and prognostic implications of regional nodal irradiation (RNI) after neoadjuvant chemotherapy (NAC) in patients with residual triple-negative breast cancer (TNBC).

Materials And Methods: We analyzed 152 patients with residual TNBC who underwent breast-conserving surgery after NAC between December 2008 and December 2017. Most patients (n = 133; 87.

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Article Synopsis
  • * A retrospective review identified 14 patients with HGC of the SSN, with MRI indicating constriction primarily between the nerve's origin and the suprascapular notch, and most patients receiving non-operative treatment.
  • * Findings suggest that conservative management is often effective, with significant recovery noted in the majority of patients after at least 6 months, indicating that immediate invasive treatment may not be necessary.
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JCO The APHINITY trial (ClinicalTrials.gov identifier: NCT01358877) previously demonstrated that pertuzumab added to adjuvant trastuzumab and chemotherapy improved invasive disease-free survival (iDFS) for patients with early human epidermal growth factor receptor 2-positive (HER2+) breast cancer (BC). Here, we report the preplanned third interim analysis of overall survival (OS) and a descriptive updated iDFS analysis with 8.

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  • Bronchiectasis is becoming more common and carries significant healthcare costs, making it crucial for doctors to identify high-risk patients for better management.
  • Given the complexity of bronchiectasis, using composite tools like the Bronchiectasis Severity Index is essential to assess disease severity and predict long-term outcomes.
  • Shifting the focus from disease severity to disease activity, which can be measured through clinical signs and biomarkers, may help in identifying at-risk patients earlier and prevent disease progression.
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Biobanks serve as vital repositories for human biospecimens and clinical data, promoting biomedical and clinical research. The integration of electronic health records particularly enhances research opportunities in the era of genomics and personalized medicine, improving understanding of tumor development and disease progression. Based on the Korea Biobank Network Common Data Model, it is possible to expand data collection across various diseases.

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Article Synopsis
  • The increasing reliance on clinical epidemiological data from human specimens creates a demand for better clinical information management systems, especially in biobanks.
  • Enhancements to the Korea Biobank Network (KBN) focused on data quality verification significantly improved data accuracy, reducing the error rate from 0.1198% to 0.0492%.
  • This study highlights the critical role of data quality management in clinical research and paves the way for advancements in clinical information management systems.
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  • The study develops an automatic speech recognition (ASR) model specifically to diagnose pronunciation problems in children with speech sound disorders (SSDs), aiming to replace manual transcription methods.
  • The researchers fine-tuned the wav2vec2.0 XLS-R model to better recognize the way children with SSDs pronounce words, achieving a Phoneme Error Rate (PER) of only 10%.
  • In comparison, a leading ASR model called Whisper struggled with this task, showing a much higher PER of about 50%, highlighting the need for more specialized ASR approaches in clinical settings.
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Background: Transanal minimally invasive surgery (TAMIS) is widely used for rectal lesion excision. Robot-assisted TA TAMIS (R-TAMIS) may improve surgical ergonomics. The introduction of the da Vinci Single-Port (SP) robot, designed for endoluminal surgery, has brought new possibilities.

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This study investigated the effectiveness and safety of pharmacopuncture for pain relief and functional improvement in patients with traffic accident (TA)-induced acute tension headaches. The study employed a parallel, single-centered, pragmatic, randomized controlled trial design. Eighty patients complaining of acute tension headaches were randomized into the integrative Korean medicine treatment (IKM treatment) group and the pharmacopuncture group on suboccipital muscles (suboccipital muscles pharmacopuncture + IKM treatment), with 40 participants assigned to each group.

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E-cadherin, a transmembrane protein, is essential for maintaining the integrity and structure of human pluripotent stem cells (hPSCs) by facilitating strong cell-cell adhesion and communication, which is crucial for their colony formation and pluripotency. Here, we used the CRISPR/Cas9 system to introduce the enhanced green fluorescent protein (EGFP)-tagged CDH1 into the AAVS1 locus, a safe harbour site, of human induced pluripotent stem cells (hiPSCs). The engineered cell line, KSCBi002-A-3, expressed functional CDH1-EGFP fusion protein, exhibited normal cell morphology, maintained a normal karyotype, and retained pluripotent state.

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The multifunctional autoprocessing repeat-in-toxin (MARTX) toxin is the primary virulence factor of Vibrio vulnificus displaying cytotoxic and hemolytic properties. The cysteine protease domain (CPD) is responsible for activating the MARTX toxin by cleaving the toxin precursor and releasing the mature toxin fragments. To investigate the structural determinants for inositol hexakisphosphate (InsP6)-mediated activation of the CPD, we determined the crystal structures of unprocessed and β-flap truncated MARTX CPDs of Vibrio vulnificus strain MO6-24/O in complex with InsP6 at 1.

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  • There is limited knowledge on how emphysema and small airway disease impact the progression of COPD, even when analyzing data from two separate patient groups.
  • Using chest CT scans, researchers divided COPD patients with low levels of emphysema (less than 10%) into two groups (low and high PRM) and looked for changes in emphysema over time.
  • Results showed that patients with high PRM experienced more significant increases in emphysema compared to those with low PRM, suggesting that small airway disease might occur before emphysema in early COPD patients.
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Genomic analysis of structural variants(SVs) in breast cancer (BC) patients has been conducted, but the relationship between genomic alterations and BC prognosis remains unclear. We performed RNA sequencing of 297 early BC fresh-frozen tissues. We identified SVs using three tools (STAR.

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