Background: Atopic dermatitis (AD) is a common skin disease with a wide range of symptoms. Due to the rapidly changing treatment landscape, regular updates to clinical guidelines are needed. Objective: This study aimed to update the guidelines for the treatment of AD to reflect recent therapeutic advances and evidence-based recommendations. Methods: The Patient characteristics, type of Intervention, Control, and Outcome framework was used to determine 48 questions related to AD management. Evidence was graded, recommendations were determined, and, after 2 voting rounds among the Korean Atopic Dermatitis Association (KADA) council members, consensus was achieved. Results: This guideline provides treatment guidance on advanced systemic treatment modalities for AD. In particular, the guideline offers up-to-date treatment recommendations for biologics and Janus-kinase inhibitors used in the treatment of patients with moderate to severe AD.It also provides guidance on other therapies for AD, along with tailored recommendations for children, adolescents, the elderly, and pregnant or breastfeeding women. Conclusion KADA’s updated AD treatment guidelines incorporate the latest evidence and expert opinion to provide a comprehensive approach to AD treatment. The guidelines will help clinicians optimize patient-specific therapies.

Background: Atopic dermatitis (AD) is a common skin disease with a wide range of symptoms. Due to the rapidly changing treatment landscape, regular updates to clinical guidelines are needed. Objective: This study aimed to update the guidelines for the treatment of AD to reflect recent therapeutic advances and evidence-based practices. Methods: The Patient characteristics, type of Intervention, Control, and Outcome framework was used to determine 48 questions related to AD management. Evidence was graded, recommendations were determined, and, after 2 voting rounds among the Korean Atopic Dermatitis Association (KADA) council members, consensus was achieved. Results: The guidelines provide detailed recommendations on foundational therapies, including the use of moisturizers, cleansing and bathing practices, allergen avoidance, and patient education. Guidance on topical therapies, such as topical corticosteroids and calcineurin inhibitors, is also provided to help manage inflammation and maintain skin barrier function in patients with AD. Additionally, recommendations on conventional systemic therapies, including corticosteroids, cyclosporine, and methotrexate, are provided for managing moderate to severe AD. Conclusion KADA’s updated AD guidelines offer clinicians evidence-based strategies focused on basic therapies, topical therapies, and conventional systemic therapies, equipping them to enhance quality of care and improve patient outcomes in AD management.

Background: In 2006, the Korean Atopic Dermatitis Association (KADA) working group released the diagnostic criteria for Korean atopic dermatitis (AD). Recently, more simplified, and practical AD diagnostic criteria have been proposed. Objective: Based on updated criteria and experience, we studied to develop and share a consensus on diagnostic criteria for AD in Koreans. Materials and Methods: For the diagnostic criteria, a questionnaire was constructed by searching the English-language literature in MEDLINE and the Cochrane Database of Systematic Reviews. A modified Delphi method composed of 3 rounds of email questionnaires was adopted for the consensus process. Fifty-four KADA council members participated in the 3 rounds of votes and expert consensus recommendations were established. Results: Diagnostic criteria for AD include pruritus, eczema with age-specific pattern, and chronic or relapsing history. Diagnostic aids for AD encompass xerosis, immunoglobulin E reactivity, hand–foot eczema, periorbital changes, periauricular changes, perioral changes, nipple eczema, perifollicular accentuation, and personal or family history of atopy. Conclusion This study streamlined and updated the diagnostic criteria for AD in Korea, making them more practicable for use in real-world clinical field.

Background: Flow cytometric immunophenotyping of hematolymphoid neoplasms (FCIHLN) is essential for diagnosis, classification, and minimal residual disease (MRD) monitoring. FCI-HLN is typically performed using in-house protocols, raising the need for standardization. Therefore, we surveyed the current status of FCI-HLN in Korea to obtain fundamental data for quality improvement and standardization. Methods: Eight university hospitals actively conducting FCI-HLN participated in our survey.We analyzed responses to a questionnaire that included inquiries regarding test items, reagent antibodies (RAs), fluorophores, sample amounts (SAs), reagent antibody amounts (RAAs), acquisition cell number (ACN), isotype control (IC) usage, positiveegative criteria, and reporting. Results: Most hospitals used acute HLN, chronic HLN, plasma cell neoplasm (PCN), and MRD panels. The numbers of RAs were heterogeneous, with a maximum of 32, 26, 12, 14, and 10 antibodies used for acute HLN, chronic HLN, PCN, ALL-MRD, and multiple myeloma-MRD, respectively. The number of fluorophores ranged from 4 to 10. RAs, SAs, RAAs, and ACN were diverse. Most hospitals used a positive criterion of 20%, whereas one used 10% for acute and chronic HLN panels. Five hospitals used ICs for the negative criterion. Positiveegative assignments, percentages, and general opinions were commonly reported. In MRD reporting, the limit of detection and lower limit of quantification were included. Conclusions This is the first comprehensive study on the current status of FCI-HLN in Korea, confirming the high heterogeneity and complexity of FCI-HLN practices. Standardization of FCI-HLN is urgently needed. The findings provide a reference for establishing standard FCI-HLN guidelines.

Purpose: Hemophilia A is a genetic disorder characterized by a lack of factor VIII (FVIII). Emicizumab, a recombinant humanized bispecific monoclonal antibody, mimics the function of FVIII. In this article, we present data on an initial real-world evaluation of emicizumab use in Korean children with severe hemophilia A without inhibitors. Methods: This study was conducted from June 2020 to March 2024 at 4 centers in Korea. The participants were pediatric patients with severe hemophilia A without inhibitors who had received emicizumab treatment for over 6 months. The mean and median annualized bleeding rates (ABRs) and mean and median annual joint bleeding rates (AJBRs) were compared. Results: Each of the 21 patients in the study received an emicizumab loading regimen of 3 mg/kg weekly for 4 weeks, followed by a modified maintenance regimen of which 2 patients (9.5%) received a 1.5 mg/kg weekly dose, 3 patients (14.3%) received a 6 mg/kg dose every 4 weeks, and the remaining 16 patients (76.2%) received a 3 mg/kg dose every 2 weeks. Before emicizumab prophylaxis initiation, the mean and median ABRs for all patients were 7.04 (SD ± 5.83) and 6.52 (range 0–21.74), respectively. After receiving emicizumab treatment, the mean and mediam ABRs decreased to 0.41 and zero, respectively. Additionally, 85.7% of the patients achieved no bleeding events within 6 months of starting the treatment. Conclusion These first real-world data in Korea indicate that emicizumab is effective and safe for pediatric patients with severe hemophilia A without inhibitors.

Objective: Anterior cervical discectomy and fusion (ACDF) with anterior plating is a commonly performed procedure for cervical disc diseases. While the clinical outcomes of most reported multilevel ACDF cases are excellent, symptomatic pseudarthrosis remains a challenge, often requiring revision surgeries. This study aims to present the radiological characteristics of multilevel ACDF constructs, which can be considered during intraoperative management to prevent pseudarthrosis. Methods: This retrospective cohort study included patients who underwent multilevel (3 or 4 levels) ACDF with anterior plating between June 2010 and August 2022. Patients were regularly followed at 4 months, 12 months, and then annually postoperation. Fusion rates and characteristic radiological patterns, such as the formation of bony buttresses underneath the anterior plate, were graded and evaluated. Results: A total of 163 patients were included in the study. Overall fusion rates were 26.38%, 64.34%, and 81.58% at 4-month, 1-year, and the final follow-up, respectively. Nonunions at 4-month follow-up with tightly engaged anterior plate with bony buttress formation were more likely to fuse in the later period (Buttress grade 0 vs. 1; p=0.01, odds ratio [OR], 5.70, Buttress grade 1 vs. >2; p<0.01, OR, 12.00). Conclusion This study emphasizes the significance of pseudarthrosis following multilevel ACDF. Pseudarthrosis predominantly occurs in the caudal-most segment of the construct, particularly when it terminates at C7. Constructs that are not tightly engaged and lack bony buttress formation in the caudal part of multilevel ACDF are more likely to develop pseudarthrosis.

Objective: Neuroinflammation’s role is increasingly emphasized in the pathology of major depressive disorder (MDD), and its close association with the risk of suicide is being reported. The Forkhead Box O1 (FoxO1) gene is known to play a role in regulating mood and emotion and is associated with susceptibility to suicidality in relation to environmental stress. This research aims to explore the relationship between FoxO1 and the risk of suicide in individuals with MDD. Methods: We enrolled 127 healthy controls (HC) and 231 patients diagnosed with MDD, including 119 individuals with high suicide risk (HSR). All participants underwent the Hamilton Rating Scale for Depression Assessment and magnetic resonance imaging. Cortical thickness and white matter integrity were evaluated. Results: In the HSR group, cortical thinning was observed in the left triangular part of the inferior frontal gyrus and right transverse frontopolar gyrus compared to HC. Additionally, fractional anisotropy (FA) values were decreased in the left posterior thalamic radiation, sagittal stratum, and uncinate fasciculus. Although no differences were observed based on allele variations for the two FoxO1 single nucleotide polymorphisms (SNPs), those with the minor allele of FoxO1 rs34733279, especially in the HSR group, displayed increased cortical thinning and reduced FA values in the left cingulum. Conclusion Our study reveals close association between the minor allele of the FoxO1 gene rs34733279 and suicide risk in the left cingulum highlights the potential key role of the FoxO1 gene rs34733279 in the context of suicidal vulnerability. Further investigations are warranted to elucidate the underlying biological mechanisms.

Objective: Anterior cervical discectomy and fusion (ACDF) with anterior plating is a commonly performed procedure for cervical disc diseases. While the clinical outcomes of most reported multilevel ACDF cases are excellent, symptomatic pseudarthrosis remains a challenge, often requiring revision surgeries. This study aims to present the radiological characteristics of multilevel ACDF constructs, which can be considered during intraoperative management to prevent pseudarthrosis. Methods: This retrospective cohort study included patients who underwent multilevel (3 or 4 levels) ACDF with anterior plating between June 2010 and August 2022. Patients were regularly followed at 4 months, 12 months, and then annually postoperation. Fusion rates and characteristic radiological patterns, such as the formation of bony buttresses underneath the anterior plate, were graded and evaluated. Results: A total of 163 patients were included in the study. Overall fusion rates were 26.38%, 64.34%, and 81.58% at 4-month, 1-year, and the final follow-up, respectively. Nonunions at 4-month follow-up with tightly engaged anterior plate with bony buttress formation were more likely to fuse in the later period (Buttress grade 0 vs. 1; p=0.01, odds ratio [OR], 5.70, Buttress grade 1 vs. >2; p<0.01, OR, 12.00). Conclusion This study emphasizes the significance of pseudarthrosis following multilevel ACDF. Pseudarthrosis predominantly occurs in the caudal-most segment of the construct, particularly when it terminates at C7. Constructs that are not tightly engaged and lack bony buttress formation in the caudal part of multilevel ACDF are more likely to develop pseudarthrosis.

Objective: Neuroinflammation’s role is increasingly emphasized in the pathology of major depressive disorder (MDD), and its close association with the risk of suicide is being reported. The Forkhead Box O1 (FoxO1) gene is known to play a role in regulating mood and emotion and is associated with susceptibility to suicidality in relation to environmental stress. This research aims to explore the relationship between FoxO1 and the risk of suicide in individuals with MDD. Methods: We enrolled 127 healthy controls (HC) and 231 patients diagnosed with MDD, including 119 individuals with high suicide risk (HSR). All participants underwent the Hamilton Rating Scale for Depression Assessment and magnetic resonance imaging. Cortical thickness and white matter integrity were evaluated. Results: In the HSR group, cortical thinning was observed in the left triangular part of the inferior frontal gyrus and right transverse frontopolar gyrus compared to HC. Additionally, fractional anisotropy (FA) values were decreased in the left posterior thalamic radiation, sagittal stratum, and uncinate fasciculus. Although no differences were observed based on allele variations for the two FoxO1 single nucleotide polymorphisms (SNPs), those with the minor allele of FoxO1 rs34733279, especially in the HSR group, displayed increased cortical thinning and reduced FA values in the left cingulum. Conclusion Our study reveals close association between the minor allele of the FoxO1 gene rs34733279 and suicide risk in the left cingulum highlights the potential key role of the FoxO1 gene rs34733279 in the context of suicidal vulnerability. Further investigations are warranted to elucidate the underlying biological mechanisms.