1.Comparing haploidentical transplantation with post‑transplantation cyclophosphamide and umbilical cord blood transplantation using targeted busulfan in children and adolescents with hematologic malignancies
Kyung Taek HONG ; Bo Kyung KIM ; Hong Yul AN ; Jung Yoon CHOI ; Sang Hoon SONG ; Kyung‑Sang YU ; In‑Jin JANG ; Hyoung Jin KANG
Blood Research 2025;60():7-
Purpose:
This study compared the outcomes of haploidentical-related donor (HRD) and umbilical cord blood (UCB) hematopoietic stem cell transplantation (HSCT) in pediatric patients with hematologic malignancies.
Methods:
Data on patients who underwent HRD HSCT with post-transplant cyclophosphamide (n = 41) and UCB HSCT (n = 24) after targeted busulfan-based myeloablative conditioning with intensive pharmacokinetic monitoring between 2009 and 2018 were retrospectively analyzed.
Results:
The median follow-up durations in the HRD and UCB groups were 7.0 and 10.9 years, respectively. The cumu‑ lative incidence of acute graft-versus-host disease (GVHD) grades II–IV and moderate-to-severe chronic GVHD did not differ significantly between the groups. However, the HRD group demonstrated significantly lower rates of acute GVHD grades III–IV (4.9% vs. 29.2%, p = 0.009) and non-relapse mortality (2.6% vs. 34.2%, p < 0.001) but a higher relapse incidence (32.1% vs. 8.8%, p = 0.004) than the UCB group. The 5-year event-free and overall survival rates were 65.8% and 54.2% (p = 0.204) and 78.0% and 65.7% (p = 0.142) for the HRD and UCB groups, respectively. Multivariate analysis identified disease status as a significant risk factor for overall survival (hazard ratio, 3.24; p = 0.016). Additionally, UCB HSCT exhibited a trend toward worse event-free survival compared to HRD HSCT (hazard ratio, 2.63; p = 0.05).
Conclusions
These findings indicate that HRD HSCT with post-transplant cyclophosphamide provides promising outcomes compared to UCB HSCT in pediatric patients, with a trend toward improved survival over a long-term follow-up period exceeding a median of 7 years. Thus, HRD HSCT may be a valuable option for pediatric patients with‑ out human leukocyte antigen-matched donors.
2.Comparing haploidentical transplantation with post‑transplantation cyclophosphamide and umbilical cord blood transplantation using targeted busulfan in children and adolescents with hematologic malignancies
Kyung Taek HONG ; Bo Kyung KIM ; Hong Yul AN ; Jung Yoon CHOI ; Sang Hoon SONG ; Kyung‑Sang YU ; In‑Jin JANG ; Hyoung Jin KANG
Blood Research 2025;60():7-
Purpose:
This study compared the outcomes of haploidentical-related donor (HRD) and umbilical cord blood (UCB) hematopoietic stem cell transplantation (HSCT) in pediatric patients with hematologic malignancies.
Methods:
Data on patients who underwent HRD HSCT with post-transplant cyclophosphamide (n = 41) and UCB HSCT (n = 24) after targeted busulfan-based myeloablative conditioning with intensive pharmacokinetic monitoring between 2009 and 2018 were retrospectively analyzed.
Results:
The median follow-up durations in the HRD and UCB groups were 7.0 and 10.9 years, respectively. The cumu‑ lative incidence of acute graft-versus-host disease (GVHD) grades II–IV and moderate-to-severe chronic GVHD did not differ significantly between the groups. However, the HRD group demonstrated significantly lower rates of acute GVHD grades III–IV (4.9% vs. 29.2%, p = 0.009) and non-relapse mortality (2.6% vs. 34.2%, p < 0.001) but a higher relapse incidence (32.1% vs. 8.8%, p = 0.004) than the UCB group. The 5-year event-free and overall survival rates were 65.8% and 54.2% (p = 0.204) and 78.0% and 65.7% (p = 0.142) for the HRD and UCB groups, respectively. Multivariate analysis identified disease status as a significant risk factor for overall survival (hazard ratio, 3.24; p = 0.016). Additionally, UCB HSCT exhibited a trend toward worse event-free survival compared to HRD HSCT (hazard ratio, 2.63; p = 0.05).
Conclusions
These findings indicate that HRD HSCT with post-transplant cyclophosphamide provides promising outcomes compared to UCB HSCT in pediatric patients, with a trend toward improved survival over a long-term follow-up period exceeding a median of 7 years. Thus, HRD HSCT may be a valuable option for pediatric patients with‑ out human leukocyte antigen-matched donors.
3.Comparing haploidentical transplantation with post‑transplantation cyclophosphamide and umbilical cord blood transplantation using targeted busulfan in children and adolescents with hematologic malignancies
Kyung Taek HONG ; Bo Kyung KIM ; Hong Yul AN ; Jung Yoon CHOI ; Sang Hoon SONG ; Kyung‑Sang YU ; In‑Jin JANG ; Hyoung Jin KANG
Blood Research 2025;60():7-
Purpose:
This study compared the outcomes of haploidentical-related donor (HRD) and umbilical cord blood (UCB) hematopoietic stem cell transplantation (HSCT) in pediatric patients with hematologic malignancies.
Methods:
Data on patients who underwent HRD HSCT with post-transplant cyclophosphamide (n = 41) and UCB HSCT (n = 24) after targeted busulfan-based myeloablative conditioning with intensive pharmacokinetic monitoring between 2009 and 2018 were retrospectively analyzed.
Results:
The median follow-up durations in the HRD and UCB groups were 7.0 and 10.9 years, respectively. The cumu‑ lative incidence of acute graft-versus-host disease (GVHD) grades II–IV and moderate-to-severe chronic GVHD did not differ significantly between the groups. However, the HRD group demonstrated significantly lower rates of acute GVHD grades III–IV (4.9% vs. 29.2%, p = 0.009) and non-relapse mortality (2.6% vs. 34.2%, p < 0.001) but a higher relapse incidence (32.1% vs. 8.8%, p = 0.004) than the UCB group. The 5-year event-free and overall survival rates were 65.8% and 54.2% (p = 0.204) and 78.0% and 65.7% (p = 0.142) for the HRD and UCB groups, respectively. Multivariate analysis identified disease status as a significant risk factor for overall survival (hazard ratio, 3.24; p = 0.016). Additionally, UCB HSCT exhibited a trend toward worse event-free survival compared to HRD HSCT (hazard ratio, 2.63; p = 0.05).
Conclusions
These findings indicate that HRD HSCT with post-transplant cyclophosphamide provides promising outcomes compared to UCB HSCT in pediatric patients, with a trend toward improved survival over a long-term follow-up period exceeding a median of 7 years. Thus, HRD HSCT may be a valuable option for pediatric patients with‑ out human leukocyte antigen-matched donors.
4.High Compliance with the Lifestyle-Modification Program “Change 10 Habits” Is Effective for Obesity Management
Bo Hyung KIM ; Minji KANG ; Do-Yeon KIM ; Kumhee SON ; Hyunjung LIM
Journal of Obesity & Metabolic Syndrome 2024;33(2):155-165
Background:
Low compliance (LC) with lifestyle modification is a very common obstacle in obesity management. The purpose of the current study was to investigate the effectiveness of obesity management according to compliance with a lifestyle-modification program.
Methods:
The “Change 10 Habits” program was administered four times over 12 weeks. Eighty-seven participants were divided into LC and high compliance (HC) groups for analysis after intervention. Then, to assess the program’s effectiveness based on compliance, we conducted t-tests and linear regression modeling.
Results:
In week 12, the scores of two dietary habits—specifically, “eat three meals regularly, adequate amount” and “do not eat after 9:00 PM”—were significantly higher in the HC group than in the LC group. Changes in leg and total body fat percentages were significantly improved in the HC group (−0.2%±0.3% vs. 0.9%±0.3%, P< 0.05; −0.1%±0.3% vs. 1.1%±0.5%, P<0.05, respectively). The body mass index was also significantly lower in the HC group than in the LC group (26.7±1.8 kg/m2 vs. 27.7±2.1 kg/m2 , P<0.05) at final follow-up. Finally, the systolic blood pressure, triglyceride, and very-low-density lipoprotein cholesterol values of the HC group also decreased significantly (from 117.9±12.2 to 114.3±15.0 mmHg, P<0.05; from 121.7±74.9 to 105.7±60.9 mg/dL, P<0.05; and from 24.3±15.0 to 21.1±12.2 mg/dL, P<0.05, respectively).
Conclusion
HC with the study program effectively improved the dietary habits, body fat composition, blood pressure, and lipid profile of adults with mild obesity.
5.High Compliance with the Lifestyle-Modification Program “Change 10 Habits” Is Effective for Obesity Management
Bo Hyung KIM ; Minji KANG ; Do-Yeon KIM ; Kumhee SON ; Hyunjung LIM
Journal of Obesity & Metabolic Syndrome 2024;33(2):155-165
Background:
Low compliance (LC) with lifestyle modification is a very common obstacle in obesity management. The purpose of the current study was to investigate the effectiveness of obesity management according to compliance with a lifestyle-modification program.
Methods:
The “Change 10 Habits” program was administered four times over 12 weeks. Eighty-seven participants were divided into LC and high compliance (HC) groups for analysis after intervention. Then, to assess the program’s effectiveness based on compliance, we conducted t-tests and linear regression modeling.
Results:
In week 12, the scores of two dietary habits—specifically, “eat three meals regularly, adequate amount” and “do not eat after 9:00 PM”—were significantly higher in the HC group than in the LC group. Changes in leg and total body fat percentages were significantly improved in the HC group (−0.2%±0.3% vs. 0.9%±0.3%, P< 0.05; −0.1%±0.3% vs. 1.1%±0.5%, P<0.05, respectively). The body mass index was also significantly lower in the HC group than in the LC group (26.7±1.8 kg/m2 vs. 27.7±2.1 kg/m2 , P<0.05) at final follow-up. Finally, the systolic blood pressure, triglyceride, and very-low-density lipoprotein cholesterol values of the HC group also decreased significantly (from 117.9±12.2 to 114.3±15.0 mmHg, P<0.05; from 121.7±74.9 to 105.7±60.9 mg/dL, P<0.05; and from 24.3±15.0 to 21.1±12.2 mg/dL, P<0.05, respectively).
Conclusion
HC with the study program effectively improved the dietary habits, body fat composition, blood pressure, and lipid profile of adults with mild obesity.
6.A Case of Atypical Cytomegalovirus Corneal Endotheliitis after Intravitreal Triamcinolone Injection
Tae Rim KIM ; Min Seok KANG ; Bo Kwon SON
Journal of the Korean Ophthalmological Society 2024;65(7):470-474
Purpose:
We present an atypical case of cytomegalovirus corneal endotheliitis after intravitreal triamcinolone injection.Case summary: A 61-year-old man presented with decreased visual acuity after intravitreal triamcinolone (Maqaid®, Wakamoto Pharmaceutical Co., Ltd., Tokyo, Japan) injection for cystoid macular edema following cataract surgery. Ocular examination revealed elevated intraocular pressure, diffuse keratic precipitates with corneal edema, and anterior chamber inflammation. These findings were suggestive of viral corneal endotheliitis. Polymerase chain reaction analysis of the anterior chamber aqueous humor detected cytomegalovirus DNA. Consequently, the patient was diagnosed with cytomegalovirus corneal endotheliitis. He was treated with oral valganciclovir (Valcyte®, Roche, Basel, Switzerland) at a dose of 1,800 mg/day for 3 weeks as an induction phase, followed by 900 mg/day for 3 weeks as a remission phase. This treatment regimen led to significant improvement in corneal edema and anterior chamber inflammation with complete restoration of visual acuity.
Conclusions
It is important to note that cytomegalovirus endotheliitis can occur after intravitreal triamcinolone injection and can present in an atypical rather than a typical form.
7.Prevalence and molecular characteristics of carbapenemresistant Escherichia coli isolated from dogs in South Korea
Bo-Youn MOON ; Md. Sekendar ALI ; Seunghoe KIM ; Hee-Seung KANG ; Ye-Ji KANG ; Jae-Myung KIM ; Dong-Chan MOON ; Suk-Kyung LIM
Journal of Veterinary Science 2024;25(5):17-2024
Objective:
We aimed to ascertain the occurrence and characteristics of CRE isolated from companion animals, dogs and cats.
Methods:
E. coli strains were tested for antimicrobial susceptibility using the broth microdilution technique. Antimicrobial resistance genes were detected by polymerase chain reaction and sequencing analysis. The molecular characteristics of CRE were determined using multi-locus sequence typing, replicon typing, and pulsed-field gel electrophoresis (PFGE).
Results:
In total, 13 CRE isolates (0.13%) were identified from dogs possessing blaNDM-5 along with β-lactamase genes, mostly blaCMY-2 (92.2%) and blaTEM-1 (53.8%). The commonly observed mutations were S83L and D87N in gyrA, S80I in parC, and S458A in parE. CRE carried nonbeta-lactam resistance genes, with the majority being tet(B) (100%), sul (84.6%), and aac(3)-II (53.8%). Nine different PFGE patterns (P1–P9), IncX3-type plasmids (69.2%), and ST410 (84.6%) were predominantly detected.
Conclusions
and Relevance: This investigation provides significant insight into the prevalence and molecular characteristics of blaNDM-5 -carrying E. coli in dogs. The co-existence of blaNDM-5 and other antimicrobial resistance genes in E. coli potentially poses severe health hazards to humans.
8.Unenhanced Breast MRI With Diffusion-Weighted Imaging for Breast Cancer Detection: Effects of Training on Performance and Agreement of Subspecialty Radiologists
Yeon Soo KIM ; Su Hyun LEE ; Soo-Yeon KIM ; Eun Sil KIM ; Ah Reum PARK ; Jung Min CHANG ; Vivian Youngjean PARK ; Jung Hyun YOON ; Bong Joo KANG ; Bo La YUN ; Tae Hee KIM ; Eun Sook KO ; A Jung CHU ; Jin You KIM ; Inyoung YOUN ; Eun Young CHAE ; Woo Jung CHOI ; Hee Jeong KIM ; Soo Hee KANG ; Su Min HA ; Woo Kyung MOON
Korean Journal of Radiology 2024;25(1):11-23
Objective:
To investigate whether reader training improves the performance and agreement of radiologists in interpreting unenhanced breast magnetic resonance imaging (MRI) scans using diffusion-weighted imaging (DWI).
Materials and Methods:
A study of 96 breasts (35 cancers, 24 benign, and 37 negative) in 48 asymptomatic women was performed between June 2019 and October 2020. High-resolution DWI with b-values of 0, 800, and 1200 sec/mm 2 was performed using a 3.0-T system. Sixteen breast radiologists independently reviewed the DWI, apparent diffusion coefficient maps, and T1-weighted MRI scans and recorded the Breast Imaging Reporting and Data System (BI-RADS) category for each breast. After a 2-h training session and a 5-month washout period, they re-evaluated the BI-RADS categories. A BI-RADS category of 4 (lesions with at least two suspicious criteria) or 5 (more than two suspicious criteria) was considered positive.The per-breast diagnostic performance of each reader was compared between the first and second reviews. Inter-reader agreement was evaluated using a multi-rater κ analysis and intraclass correlation coefficient (ICC).
Results:
Before training, the mean sensitivity, specificity, and accuracy of the 16 readers were 70.7% (95% confidence interval [CI]: 59.4–79.9), 90.8% (95% CI: 85.6–94.2), and 83.5% (95% CI: 78.6–87.4), respectively. After training, significant improvements in specificity (95.2%; 95% CI: 90.8–97.5; P = 0.001) and accuracy (85.9%; 95% CI: 80.9–89.8; P = 0.01) were observed, but no difference in sensitivity (69.8%; 95% CI: 58.1–79.4; P = 0.58) was observed. Regarding inter-reader agreement, the κ values were 0.57 (95% CI: 0.52–0.63) before training and 0.68 (95% CI: 0.62–0.74) after training, with a difference of 0.11 (95% CI: 0.02–0.18; P = 0.01). The ICC was 0.73 (95% CI: 0.69–0.74) before training and 0.79 (95% CI: 0.76–0.80) after training (P = 0.002).
Conclusion
Brief reader training improved the performance and agreement of interpretations by breast radiologists using unenhanced MRI with DWI.
9.Ultrasound-guided sciatic nerve block in a patient with sciatic neuropathy associated with uterine myoma: a case report
Bo Kyung KANG ; Min Hyouk BEAK ; Won-joong KIM
The Ewha Medical Journal 2024;47(2):e30-
Although sciatica is commonly associated with lumbar spinal issues, it is important to acknowledge that non-spinal factors can also play a significant role in this condition. This is particularly relevant for female patients, in whom gynecologic conditions can lead to secondary sciatic neuropathy. Herein, we report the case of a 66-year-old woman who experienced posterolateral right lower extremity radiating pain. We initially performed a lumbar transforaminal epidural steroid injection, but the pain persisted.Subsequently, hip MRI revealed sciatic neuropathy adjacent to the pedunculated portions of a uterine myoma. We then performed a sub-gluteal sciatic nerve block under ultrasound guidance, resulting in significant relief of her pain. In conclusion, hip MRI can be helpful for the differential diagnosis of sciatica, and ultrasound-guided sciatic nerve block can be considered an appropriate and effective treatment option.
10.The Association between Social Support, Metabolic Syndrome, and Incidence of Cardio-Cerebrovascular Diseases in Older Adults: The ARIRANG Study
Hae-Kweun NAM ; Sei-Jin CHANG ; Chun-Bae KIM ; Kyoung Sook JEONG ; Sung-Kyung KIM ; Dae Ryong KANG ; Yong Whi JEONG ; Hocheol LEE ; Bo ZHAO ; Sang-Baek KOH
Yonsei Medical Journal 2024;65(6):363-370
Purpose:
We investigated the association between social support, metabolic syndrome, and incident cardio-cerebrovascular disease (CCVD) in rural Koreans aged ≥50 years.
Materials and Methods:
We conducted a prospective study using the Korean Genome and Epidemiology Study on Atherosclerosis Risk of Rural Areas in the Korean General Population (KoGES-ARIRANG) dataset. From the baseline of 5169 adults, 1682 participants were finally included according to the exclusion criteria. For outcomes, myocardial infarction, angina, and stroke were included. For independent variables, the social support score and metabolic syndrome were used. Descriptive statistics and multivariate logistic regression were performed to investigate the association among the variables. Paired t-test was conducted to analyze the longitudinal variation of social support scores.
Results:
During the 6.37 years of median follow-up, 137 participants developed CCVD. The adjusted odds ratio (aOR) of metabolic syndrome with persistently high social support was 2.175 [95% confidence interval (CI): 1.479–3.119]. The aOR of metabolic syndrome with persistently low social support was 2.494 (95%CI: 1.141–5.452). The longitudinal variation of the social support score of persistently high social support group was increased significantly by 4.26±26.32. The score of the persistently low social support group was decreased by 1.34±16.87 with no statistical significance.
Conclusion
The presence of metabolic syndrome increases the likelihood of developing onset CCVD. Within the metabolic syndrome positive group, when social support was persistently low, the cohort developed more cardio-cerebrovascular disease compared to the persistently higher social support group. The social support score of the persistently low social support group could be improved through proper intervention. To prevent CCVD, metabolic syndrome components and low social support should be improved in the study participants.

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