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  1. Article ; Online: Sarcopenia with decreased total psoas muscle area in children with high-risk neuroblastoma.

    Bang, Min-Jung / Lee, Sanghoon / Lee, Ji Won / Kim, Wontae / Sung, Ki Woong / Seo, Jeong-Meen

    Asian journal of surgery

    2024  

    Abstract: Background: We calculated psoas muscle area (PMA) z-scores in high-risk neuroblastoma patients undergoing treatment to examine the clinical significance of sarcopenia in this cohort.: Methods: We analyzed retrospective data from patients aged 0-18 ... ...

    Abstract Background: We calculated psoas muscle area (PMA) z-scores in high-risk neuroblastoma patients undergoing treatment to examine the clinical significance of sarcopenia in this cohort.
    Methods: We analyzed retrospective data from patients aged 0-18 who were diagnosed with abdominal neuroblastoma between 2005 and 2019 at Samsung Medical Center. Patients categorized as high-risk undergone induction chemotherapy, neuroblastoma excision, and tandem high-dose chemotherapy with autologous stem cell transplantation (HDCT/auto-SCT) were selected. L3-4 lumbar levels on axial CT images were identified and we measured the areas of the left and right psoas muscles to determine tPMA. Total PMA z-scores were calculated using an open online tool.
    Results: There were 45 boys and 25 girls with a mean age of 3.86 years. CT images taken at initial diagnosis and after tandem HDCT/auto-SCT were selected to calculate tPMA z-scores. Mean elapsed time between the two measurements was 12.91 ± 1.73 months. Mean tPMA z-score significantly decreased from -0.21 ± 1.29 to -0.66 ± 0.97 (p = 0.022). Length of hospital stay was significantly longer in the group of patients whose tPMA z-scores decreased by more than .45 (177.62 ± 28.82 days vs. 165.75 ± 21.34 days, p = 0.049). Presence of sarcopenia at initial diagnosis was a significant risk factor for bacterial infection during neuroblastoma treatment.
    Conclusion: tPMA z-scores in high-risk neuroblastoma patients decreased significantly following a treatment regimen that included induction chemotherapy, tumor resection surgery, and HDCT/auto-SCT. A greater decrease in tPMA z-score was associated with longer hospital stay during treatment.
    Language English
    Publishing date 2024-03-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1068461-x
    ISSN 0219-3108 ; 1015-9584
    ISSN (online) 0219-3108
    ISSN 1015-9584
    DOI 10.1016/j.asjsur.2024.03.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Methionine metabolism and endocrine function of the pituitary gland in patients with suprasellar germinoma.

    Lee, Hwanhee / Lee, Ji Won / Cho, Hee Won / Choe, Yearn Seong / Lee, Kyung-Han / Choi, Joon Young / Sung, Ki Woong / Moon, Seung Hwan

    PloS one

    2023  Volume 18, Issue 7, Page(s) e0288528

    Abstract: Purpose: The aim of this study was to investigate the association between methionine (MET) metabolism and endocrine function of the pituitary gland in patients with suprasellar region tumor.: Materials and methods: Twenty patients with intracranial ... ...

    Abstract Purpose: The aim of this study was to investigate the association between methionine (MET) metabolism and endocrine function of the pituitary gland in patients with suprasellar region tumor.
    Materials and methods: Twenty patients with intracranial germinoma were included in this study. Initial staging and all surveillance MET PET/CT scans and comparable serum levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), and thyroid stimulating hormone (TSH) were analyzed. The patients were divided into two groups according to tumor location, with tumors in the suprasellar region (condition) or not (control). MET uptake of the pituitary gland (i.e., SUVR [standardized uptake value ratio]) and levels of FSH, LH, TSH were compared in the condition and control groups and in the before and after treatment phases of each group.
    Results: The SUVR in the control group was like that found in normal pituitary glands in previous studies, whereas the SUVR of the untreated condition group was high and that of treated condition group was low with significance compared to the control group. Serum levels of pituitary hormones in before and after treatment condition groups were significantly lower than those in the control group. The FSH and LH levels of curatively treated patients in the control group were positively correlated with SUVR with respective ß values of 3.71 and 0.98 (p < .001). The TSH level of the treated condition group was negatively correlated with SUVR (ß = -1.02, p < .001).
    Conclusion: This study is the first known investigation to examine the association between MET metabolism and endocrine function of the pituitary gland, and it confirmed that MET metabolism reflects endocrine function. A future study validating the result of correlation analysis is warranted.
    MeSH term(s) Humans ; Positron Emission Tomography Computed Tomography ; Luteinizing Hormone ; Pituitary Gland/diagnostic imaging ; Pituitary Gland/metabolism ; Follicle Stimulating Hormone ; Thyrotropin/metabolism ; Head and Neck Neoplasms/metabolism ; Central Nervous System Neoplasms/metabolism ; Germinoma/metabolism ; Methionine/metabolism
    Chemical Substances Luteinizing Hormone (9002-67-9) ; Follicle Stimulating Hormone (9002-68-0) ; Thyrotropin (9002-71-5) ; Methionine (AE28F7PNPL)
    Language English
    Publishing date 2023-07-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0288528
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Self-reported physical activity behaviors of childhood cancer survivors: comparison to a general adolescent population in Korea.

    Yeo, Yohwan / Lee, Ji Won / Shin, Dong Wook / Baek, Hee Jo / Chung, Nack-Gyun / Sung, Ki Woong / Song, Yun-Mi

    Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

    2023  Volume 31, Issue 3, Page(s) 164

    Abstract: Purpose: Adequate physical activity (PA) can significantly contribute to the prevention of undesirable health outcomes in childhood cancer survivors (CCS). This study aimed to identify the patterns of PA and related factors in Korean CCS.: Methods: ... ...

    Abstract Purpose: Adequate physical activity (PA) can significantly contribute to the prevention of undesirable health outcomes in childhood cancer survivors (CCS). This study aimed to identify the patterns of PA and related factors in Korean CCS.
    Methods: Study subjects were 184 adolescents selected from an ongoing cohort study of Korean CCS and 1,840 sex- and school grade-matched controls randomly selected from the participants of the 2019 Korea Youth Risk Behavior Web-based Survey. Information on PA and sedentary behaviors was collected by self-administered questionnaire. We estimated body mass index (BMI)-adjusted odds ratio (OR) and 95% confidence interval (CI) for the advisable healthy behaviors of CCS compared with healthy controls using conditional logistic regression analysis. In addition, the associations of advisable healthy behaviors of CCS with sociodemographic and clinical factors were estimated using multiple logistic regression analysis.
    Results: CCS were less likely to be physically active than controls, but this finding was evident only in males. The ORs (95% CIs) for regular exercise, moderate intensity PA, vigorous intensity PA, and walking were 0.42 (0.27-0.65), 0.39 (0.24-0.63), 0.53 (0.33-0.84), and 0.64 (0.42-0.98), respectively, in male CCS compared with same-sex controls. Compared with same-sex controls, male CCS were 4.60 times and female survivors were 15.19 times more likely to sleep longer than 8 h a day. Among CCS, males were 2.92 times and 3.07 times more likely to perform moderate intensity PA and muscle-strengthening exercise, respectively, than female. Higher BMI (OR: 1.16), highest family income (OR: 3.98), and a caregiver who performed regular exercise (OR: 2.08) were positively associated with vigorous intensity PA of CCS. With increasing time after treatment completion, the probability of engaging in sedentary activity for less than 6 h per day decreased (OR = 0.89, 95% CI 0.79-1.00).
    Conclusion: Korean adolescent CCS were physically inactive compared with control adolescents. Several sociodemographic factors such as sex, family income, caregiver PA, and obesity level were associated with PA behaviors of CCS.
    Implications: Strategic effort would be needed to increase physical activity of childhood cancer survivors in adolescent period with consideration of various sociodemographic factors found in this study.
    MeSH term(s) Adolescent ; Child ; Female ; Humans ; Male ; Cancer Survivors ; Cohort Studies ; Exercise ; Neoplasms/therapy ; Republic of Korea ; Self Report ; Case-Control Studies
    Language English
    Publishing date 2023-02-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1134446-5
    ISSN 1433-7339 ; 0941-4355
    ISSN (online) 1433-7339
    ISSN 0941-4355
    DOI 10.1007/s00520-023-07612-x
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  4. Article ; Online: Allogeneic stem cell transplantation for neuroblastoma.

    Sung, Ki Woong

    The Korean journal of hematology

    2012  Volume 47, Issue 1, Page(s) 3–5

    Language English
    Publishing date 2012-03-28
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2584451-9
    ISSN 2092-9129 ; 2092-9129
    ISSN (online) 2092-9129
    ISSN 2092-9129
    DOI 10.5045/kjh.2012.47.1.3
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  5. Article ; Online: Treatment of high-risk neuroblastoma.

    Sung, Ki Woong

    Korean journal of pediatrics

    2012  Volume 55, Issue 4, Page(s) 115–120

    Abstract: Although high-dose chemotherapy and autologous stem cell transplantation (HDCT/autoSCT) have improved the prognosis for patients with high-risk neuroblastoma (NB), event-free survival rates remain in the range of 30 to 40%, which is unsatisfactory. To ... ...

    Abstract Although high-dose chemotherapy and autologous stem cell transplantation (HDCT/autoSCT) have improved the prognosis for patients with high-risk neuroblastoma (NB), event-free survival rates remain in the range of 30 to 40%, which is unsatisfactory. To further improve outcomes, several clinical trials, including tandem HDCT/autoSCT, high-dose (131)I-metaiodobenzylguanidine treatment, and immunotherapy with NB specific antibody, have been undertaken and pilot studies have reported encouraging results. Nonetheless, about half of high-risk NB patients still experience treatment failure and have no realistic chance for cure with conventional treatment options alone after relapse. Therefore, a new modality of treatment is warranted for these patients. In recent years, several groups of investigators have examined the feasibility and effectiveness of reduced-intensity allogeneic stem cell transplantation (RI alloSCT) for the treatment of relapsed/progressed NB. Although a graft-versus-tumor effect has not yet been convincingly demonstrated in the setting of relapsed NB, the strategy of employing RI alloSCT has provided hope that treatment-related mortality will be reduced and a therapeutic benefit will emerge. However, alloSCT for NB is still investigational and there remain many issues to be elucidated in many areas. At present, alloSCT is reserved for specific clinical trials testing the immunomodulatory effect against NB.
    Language English
    Publishing date 2012-04-30
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2594966-4
    ISSN 2092-7258 ; 1738-1061
    ISSN (online) 2092-7258
    ISSN 1738-1061
    DOI 10.3345/kjp.2012.55.4.115
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Comparison of Next-Generation Sequencing and Fluorescence In Situ Hybridization for Detection of Segmental Chromosomal Aberrations in Neuroblastoma.

    Kim, Eojin / Lee, Boram / Lee, Ji Won / Sung, Ki Woong / Kim, Jung-Sun

    Diagnostics (Basel, Switzerland)

    2021  Volume 11, Issue 9

    Abstract: The aim of this study was to compare next-generation sequencing (NGS) with the traditional fluorescence in situ hybridization (FISH) for detecting segmental chromosomal aberrations (SCAs) such as 1p deletion, 11q deletion and 17q gain, which are well- ... ...

    Abstract The aim of this study was to compare next-generation sequencing (NGS) with the traditional fluorescence in situ hybridization (FISH) for detecting segmental chromosomal aberrations (SCAs) such as 1p deletion, 11q deletion and 17q gain, which are well-known predictive markers for adverse outcome in neuroblastoma. The tumor tissue obtained from 35 patients with neuroblastoma was tested by FISH and targeted NGS, which is specially designed to detect copy number alterations across the entire chromosomal region in addition to mutations in 353 cancer-related genes. All chromosomal copy number alterations were analyzed using the copy number variation plot derived from targeted NGS. FISH was performed to detect 1p deletion, 11q deletion and 17q gain. The copy numbers of 1p, 11q, and 17q obtained via NGS were correlated with those acquired via FISH. The SCAs determined by NGS were matched with those by FISH. Most 17q gain of mismatched cases detected by NGS alone showed a subsegmental gain of 17q. FISH revealed 11q deletion and 17q gain in a few tumor cells of two cases, which were not detected by NGS. NGS can be a sensitive complementary and alternative method to the conventional FISH for detecting SCAs.
    Language English
    Publishing date 2021-09-17
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662336-5
    ISSN 2075-4418
    ISSN 2075-4418
    DOI 10.3390/diagnostics11091702
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  7. Article: Tandem High-dose Chemotherapy and Autologous Stem Cell Transplantation in Children with Brain Tumors : Review of Single Center Experience.

    Sung, Ki Woong / Lim, Do Hoon / Shin, Hyung Jin

    Journal of Korean Neurosurgical Society

    2018  Volume 61, Issue 3, Page(s) 393–401

    Abstract: The prognosis of brain tumors in children has improved for last a few decades. However, the prognosis remains dismal in patients with recurrent brain tumors. The outcome for infants and young children in whom the use of radiotherapy (RT) is very limited ... ...

    Abstract The prognosis of brain tumors in children has improved for last a few decades. However, the prognosis remains dismal in patients with recurrent brain tumors. The outcome for infants and young children in whom the use of radiotherapy (RT) is very limited because of unacceptable long-term adverse effect of RT remains poor. The prognosis is also not satisfactory when a large residual tumor remains after surgery or when leptomeningeal seeding is present at diagnosis. In this context, a strategy using high-dose chemotherapy and autologous stem cell transplantation (HDCT/auto-SCT) has been explored to improve the prognosis of recurrent or high-risk brain tumors. This strategy is based on the hypothesis that chemotherapy dose escalation might result in improvement in survival rates. Recently, the efficacy of tandem HDCT/auto-SCT has been evaluated in further improving the outcome. This strategy is based on the hypothesis that further dose escalation might result in further improvement in survival rates. At present, the number of studies employing tandem HDCT/auto-SCT for brain tumors is limited. However, results of these pilot studies suggest that tandem HDCT/auto-SCT may further improve the outcome. In this review, we will summarize our single center experience with tandem HDCT/auto-SCT for recurrent or high-risk brain tumors.
    Language English
    Publishing date 2018-05-01
    Publishing country Korea (South)
    Document type Journal Article ; Review
    ZDB-ID 2253817-3
    ISSN 1598-7876 ; 2005-3711 ; 1225-8245
    ISSN (online) 1598-7876
    ISSN 2005-3711 ; 1225-8245
    DOI 10.3340/jkns.2018.0039
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  8. Article ; Online: Value of C-11 methionine PET/CT in patients with intracranial germinoma.

    Park, Yong-Jin / Lee, Ji Won / Cho, Hee Won / Choe, Yearn Seong / Lee, Kyung-Han / Choi, Joon Young / Sung, Ki Woong / Moon, Seung Hwan

    PloS one

    2022  Volume 17, Issue 2, Page(s) e0263690

    Abstract: Purpose: The purpose of this study was to investigate the value of C-11 methionine (MET) positron emission tomography (PET)/computed tomography (CT) in patients with intracranial germinoma (IG).: Material and methods: We conducted a retrospective ... ...

    Abstract Purpose: The purpose of this study was to investigate the value of C-11 methionine (MET) positron emission tomography (PET)/computed tomography (CT) in patients with intracranial germinoma (IG).
    Material and methods: We conducted a retrospective analysis of 21 consecutive patients with pathologically confirmed IGs and eight patients with intracranial non-germinomas (INGs) located in a similar region. Clinical characteristics, imaging findings, and tumor markers such as α-fetoprotein (AFP) and β-human chorionic gonadotropin (HCG) were used as clinical variables. Maximum standardized uptake value (SUVmax), tumor-to-normal tissue (T/N) ratio, and visual scoring of tumor were used as MET PET parameters.
    Results: All IGs were well visualized on MET PET with a three-grade visual scoring system. In addition, SUVmax of IGs was higher than that of INGs (P = 0.005). Pre-treatment (Pre-Tx) T/N ratio was significantly correlated with pre-Tx serum HCG (P = 0.031). Moreover, MET PET parameters showed significant associations with tumor location, sex, KRAS variant, and symptoms.
    Conclusion: MET PET/CT could be a useful diagnostic tool in patients suspected of having IGs. In addition, the MET avidity of tumor is a potential surrogate biomarker of HCG, which has been used as a diagnostic marker for IGs. Tumor MET parameters also had significant differences according to tumor locations, sex, symptoms, and KRAS mutation. However, MET avidity of tumors had no significant prognostic value.
    MeSH term(s) Adolescent ; Adult ; Biomarkers, Tumor/analysis ; Biomarkers, Tumor/blood ; Brain Neoplasms/diagnosis ; Brain Neoplasms/metabolism ; Brain Neoplasms/mortality ; Brain Neoplasms/therapy ; Child ; Chorionic Gonadotropin, beta Subunit, Human/analysis ; Chorionic Gonadotropin, beta Subunit, Human/blood ; Female ; Germinoma/diagnosis ; Germinoma/metabolism ; Germinoma/mortality ; Germinoma/therapy ; Humans ; Male ; Methionine/pharmacokinetics ; Positron Emission Tomography Computed Tomography/methods ; Predictive Value of Tests ; Prognosis ; Retrospective Studies ; Survival Analysis ; Young Adult ; alpha-Fetoproteins/analysis ; alpha-Fetoproteins/metabolism
    Chemical Substances Biomarkers, Tumor ; Chorionic Gonadotropin, beta Subunit, Human ; alpha-Fetoproteins ; carbon-11 methionine (58576-49-1) ; Methionine (AE28F7PNPL)
    Language English
    Publishing date 2022-02-07
    Publishing country United States
    Document type Evaluation Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0263690
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  9. Article ; Online: Clinical significance of germline telomere length and associated genetic factors in patients with neuroblastoma.

    Bae, Joon Seol / Lee, Ji Won / Joung, Je-Gun / Cho, Hee Won / Ju, Hee Young / Yoo, Keon Hee / Koo, Hong Hoe / Sung, Ki Woong

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 12954

    Abstract: Studies investigating the relationship between germline telomere length and the clinical characteristics of tumors are very limited. This study evaluated the relationship between germline telomere length and the clinical characteristics of neuroblastoma. ...

    Abstract Studies investigating the relationship between germline telomere length and the clinical characteristics of tumors are very limited. This study evaluated the relationship between germline telomere length and the clinical characteristics of neuroblastoma. In addition, a genome-wide association study (GWAS) was performed to investigate the genetic factors associated with germline telomere length. The germline telomere length of peripheral blood mononuclear cells from 186 patients with neuroblastoma was measured by quantitative polymerase chain reaction. The association between germline telomere length and clinical characteristics, including long-term survival, was investigated. For the GWAS, genotyping was performed with a high-density bead chip (Illumina, San Diego, CA, USA). After strict quality-control checks of the samples, an association analysis was conducted. The result showed that longer germline telomeres were significantly associated with longer event-free survival (P = 0.032). To identify significantly assocated genetic markers for germline telomere length, genome wide association analysis was performed. As a result, several single nucleotide polymorphisms located in HIVEP3, LRRTM4, ADGRV1, RAB30, and CHRNA4 genes were discovered. During gene-based analysis (VEGAS2 tool), the CNTN4 gene had the most significant association with germline telomere length (P = 1.0E-06). During gene ontology analysis, susceptible genes associated with germline telomere length were mainly distributed in neurite morphogenesis and neuron development. A longer germline telomere length is associated with favorable prognostic factors at diagnosis and eventually better event-free survival in patients with neuroblastoma. In addition, the GWAS demonstrated that genetic markers and genes related to germline telomere length are associated with neurite morphogenesis and neuron development. Further research with larger cohorts of patients and functional investigations are needed.
    MeSH term(s) Genetic Markers ; Genome-Wide Association Study ; Humans ; Leukocytes, Mononuclear ; Neuroblastoma/genetics ; Polymorphism, Single Nucleotide ; Telomere/genetics
    Chemical Substances Genetic Markers
    Language English
    Publishing date 2022-07-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-17246-4
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  10. Article: Dual role of ERK2/NF-κB signaling in TRAIL sensitivity.

    Lee, Myoung Woo / Kim, Dae Seong / Eom, Ji Eun / Lee, Ji Won / Sung, Ki Woong / Koo, Hong Hoe / Hong, Young Bin / Yoo, Keon Hee

    American journal of cancer research

    2022  Volume 12, Issue 7, Page(s) 3373–3389

    Abstract: Targeting tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) signaling is a promising approach in cancer treatment. Although ERK and/or NF-κB signaling is involved in the expression of TRAIL receptors (TRAIL-R), the exact underlying ... ...

    Abstract Targeting tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) signaling is a promising approach in cancer treatment. Although ERK and/or NF-κB signaling is involved in the expression of TRAIL receptors (TRAIL-R), the exact underlying mechanisms remain unknown. In this study, we evaluated the role of ERK2 and NF-κB in the cytotoxicity of TRAIL during cisplatin treatment. Cisplatin treatment of neuroepithelioma cells (SK-N-MC) significantly induced ERK2 activation and increased TRAIL cytotoxicity via the upregulation of death receptor 5 (DR5) expression. In partial ERK2 knockdown cell lines that maintained only basal levels of ERK2 activity, cisplatin treatment did not increase ERK2 activity or DR5 expression. These findings indicate that induced (rather than basal) ERK2 activity enhances TRAIL susceptibility via DR5 expression. In complete ERK2 knockdown cell lines with no basal ERK2 activity, DR4, DR5, and DcRs expression levels were increased, and additional treatment with cisplatin did not further increase TRAIL-R expression. Chemical inhibition of ERK2 also enhanced TRAIL cytotoxicity by upregulating DR4 and DR5 expression. These findings indicate that basal ERK2 activity suppresses TRAIL-R expression. Both basal and inducible ERK2 activities regulate TRAIL-R expression via the NF-κB signaling pathway. Overall, our findings suggest that the ERK2/NF-κB signaling pathway has a dual role in TRAIL susceptibility by differentially regulating TRAIL-R expression in the same cellular system.
    Language English
    Publishing date 2022-07-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2589522-9
    ISSN 2156-6976
    ISSN 2156-6976
    Database MEDical Literature Analysis and Retrieval System OnLINE

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