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Liu T, Sheng Q, Xu W, Lu L, Zhu L, Xiong J, Jiang S, Yang X, Liu J, Lv Z. Tracking changes in image-defined risk factors during neoadjuvant chemotherapy and their predictive value for surgical outcomes based on the International Neuroblastoma Surgical Report Form. Pediatr Blood Cancer 2024; 71:e31161. [PMID: 38987989 DOI: 10.1002/pbc.31161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/10/2024] [Accepted: 06/09/2024] [Indexed: 07/12/2024]
Abstract
BACKGROUND The capacity of presurgical image-defined risk factors (IDRFs) to predict secondary surgical outcomes in patients with neuroblastoma is controversial. METHODS The International Neuroblastoma Surgical Report Form (INSRF) was employed to retrospectively collect the clinical data of 53 patients diagnosed with neuroblastoma at our hospital from April 2014 to April 2020. IDRFs were identified at the time of diagnosis and reassessed during the course of neoadjuvant chemotherapy. Various statistical tests were used to evaluate the correlation between IDRFs and secondary surgical outcomes. RESULTS A total of 195 IDRFs were identified. Notably, by two courses of neoadjuvant chemotherapy, the number of "two body compartments," "intraspinal tumor extension," and "trachea-compressing" IDRFs decreased significantly (p = .001). The primary tumor volumes and the number of IDRFs decreased significantly by four courses of neoadjuvant chemotherapy, especially in "intraspinal tumor extension" IDRFs (p = .034). The median number of IDRF per patient was four (interquartile range [IQR]: 1-5) at diagnosis, which diminished to one (IQR: 1-3) subsequent to neoadjuvant chemotherapy. The presence of preoperative IDRFs was not associated with surgical complications (p = .286) or the extent of surgery (p = .188). However, the number of preoperative IDRFs linked to the extent of surgery (p = .002), not to operative complications (p = .669). Specifically, presurgery "renal vessel contact" IDRFs were predictive of surgical complications, while presurgery "infiltration of vital structures" IDRFs were associated with the extent of surgery. CONCLUSION The number of IDRFs decreased significantly by four courses of neoadjuvant chemotherapy. The number and type of presurgery IDRFs may predict secondary surgical outcomes, surpassing the mere consideration of their presence or absence.
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Affiliation(s)
- Tao Liu
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qingfeng Sheng
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Weijue Xu
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li Lu
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Linlin Zhu
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Xiong
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shayi Jiang
- Department of Hematology/Oncology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiujun Yang
- Department of Radiology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jiangbin Liu
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhibao Lv
- Department of General Surgery, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Raitio A, Losty PD. Incidence and Risk Factors for Chyle Leaks After Neuroblastic Tumor Resection: A Systematic Review of Published Studies. J Pediatr Surg 2024; 59:1611-1614. [PMID: 38490882 DOI: 10.1016/j.jpedsurg.2024.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 02/12/2024] [Indexed: 03/17/2024]
Abstract
BACKGROUND Chyle leakage/ascites after surgical resection of neuroblastic tumors may delay the start of chemotherapy and worsen prognosis. Previous studies have reported a highly variable incidence and risk factors remain largely unknown. This study aims to analyze the true incidence of chyle leaks and ascites and seeks to identify risk factors and optimal treatment strategies. METHODS Medline/Embase databases were searched according to PRISMA guidelines. Literature reviews, case reports, and non-English papers were excluded. Data were extracted independently following paper selection by 2 authors. RESULTS The final analysis yielded 15 studies with N = 1468 patients. Chylous ascites was recorded postoperatively in 171 patients (12%). Most patients experiencing chyle leaks were successfully treated conservatively with drainage, bowel rest, parenteral nutrition and octreotide with variable combinations of these treatment options. 7/171 (4%) patients required operative exploration to control troublesome persistent chyle leaks. In risk factor analysis, higher tumor stage was significantly associated with the risk of chyle leak (P < 0.0001) whereas no correlation was observed with adrenal vs non-adrenal tumor location, INRG risk groups and tumor laterality. CONCLUSION Chyle leakage after surgery for neuroblastic tumors is a common morbid complication occurring in some 12% of patients. Higher INSS tumor stage portends greater risk(s). Conservative therapy strategies appear successful in the majority of cases. To avert this complication meticulous mesenteric lymphatic ligation is recommended especially for those patients with higher tumor stage(s) requiring extensive radical surgery including retroperitoneal lymph node resection. LEVEL OF EVIDENCE III. TYPE OF STUDY Systematic review.
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Affiliation(s)
- Arimatias Raitio
- University of Turku and Turku University Hospital, Paediatric Surgery, Turku, Finland.
| | - Paul D Losty
- Institute of Systems and Molecular Biology, University of Liverpool, Liverpool, UK; Department of Paediatric Surgery, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Morin CE, Hasweh R, Anton C, Dillman JR, Orscheln E, Smith EA, Kotagal M, Weiss BD, Ouyang J, Zhang B, Trout AT, Towbin AJ. Gadolinium-based contrast media does not improve the staging of neuroblastoma image-defined risk factors at diagnosis. Pediatr Blood Cancer 2024; 71:e30724. [PMID: 37845799 DOI: 10.1002/pbc.30724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/23/2023] [Accepted: 10/06/2023] [Indexed: 10/18/2023]
Abstract
BACKGROUND Neuroblastoma risk stratification relies on prognostic risk factors and image-defined risk factors (IDRFs). Evaluating neuroblastoma typically involves magnetic resonance imaging (MRI) with gadolinium-based contrast media (GBCM, "contrast"). However, there are concerns regarding adverse effects and cost of GBCM. We aimed to assess the impact of intravenous GBCM on interobserver agreement for neuroblastoma staging on baseline MRI. PROCEDURE We reviewed baseline MRI scans of 50 children with abdominopelvic neuroblastomas confirmed by histopathology. Duplicate sets of images were created, with post-contrast T1-weighted sequences removed from one set. Four pediatric radiologists independently analyzed the scans in a randomized manner. They recorded primary tumor size, presence of IDRFs, and metastatic lesions. Agreement among the reviewers was measured using kappa and Fleiss kappa statistics. RESULTS Mean age of included children was 3.3 years (range: 0.01-14.9 years), and 20 [40%] were females. Mean tumor size was 5.7 cm in greatest axial diameter. Pre-contrast versus post-contrast MRI showed excellent agreement for tumor measurement. Overlapping confidence intervals (CIs) were seen in nearly all categories of interobserver agreement on the presence or absence of individual IDRFs, with agreement ranging from poor to substantial, regardless of the presence of contrast. The overall interobserver agreement on the presence of at least one IDRF was substantial with contrast (kappa = .63; 95% CI: .52-.75) and moderate without contrast (kappa = .5; 95% CI: .39-.61); although the overlapping CIs suggest a lack of meaningful difference. Similarly, interobserver agreement on the presence or absence of individual sites of metastatic disease ranged from poor to substantial. The interobserver agreement on the overall determination of presence of metastatic disease was fair with contrast (kappa = .49; 95% CI: .38-.61) and moderate without contrast (kappa = .71; 95% CI: .59-.826). CONCLUSIONS Contrast does not improve tumor size measurement or radiologist agreement on the presence or absence of IDRFs or metastatic disease in children with newly diagnosed neuroblastoma.
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Affiliation(s)
- Cara E Morin
- Department of Radiology, Cincinnati Children's Hospital and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Reem Hasweh
- Division of Radiology, Al-Balqa Applied University, Al-Salt, Jordan
| | - Chris Anton
- Department of Radiology, Cincinnati Children's Hospital and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Jonathan R Dillman
- Department of Radiology, Cincinnati Children's Hospital and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Emily Orscheln
- Department of Radiology, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Ethan A Smith
- Department of Surgery, University of Cincinnati College of Medicine, Division of Pediatric and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Meera Kotagal
- Cancer and Blood Disease Institute, Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Brian D Weiss
- Department of Mathematical Sciences, University of Cincinnati, Cincinnati, Ohio, USA
| | - Jiarong Ouyang
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Bin Zhang
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Andrew T Trout
- Department of Radiology, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Alexander J Towbin
- Department of Radiology, Cincinnati Children's Hospital and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Abstract
Neuroblastoma is the most common malignant solid tumor handled by pediatric surgeons. It is well-known that neuroblastoma shows variable biological and clinical behaviors. In this review article, surgical strategy in neuroblastoma was described by risk stratification. Also, strategy of biopsy and clinical conditions that require special considerations such as neuroblastoma detected by mass screening, relapsed neuroblastoma, patients with stage MS and dumbbell type tumors was mentioned. As multimodal systemic treatments have been expanding, the role of surgery in neuroblastoma has become relatively less significant but requisite. We surgeons should decide therapeutic strategy based on the correct understanding of biology of neuroblastoma thinking of the better future of children.
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Affiliation(s)
- Akihiro Yoneda
- Division of Surgery, Department of Surgical Specialties / Division of Surgical Oncology, Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan.
- Division of Pediatric Surgical Oncology, National Cancer Center Hospital, Tokyo, Japan.
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Zenitani M, Yoshida M, Matsumoto S, Sakai T, Matsuura R, Umeda S, Usui N. Feasibility and safety of laparoscopic tumor resection in children with abdominal neuroblastomas. Pediatr Surg Int 2023; 39:91. [PMID: 36695959 DOI: 10.1007/s00383-023-05371-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/26/2022] [Indexed: 01/26/2023]
Abstract
PURPOSE This study aimed to evaluate the feasibility and safety of laparoscopic resection of abdominal neuroblastoma by comparing operative and long-term oncologic outcomes between open and laparoscopic surgeries. METHODS This single-center retrospective study included patients who underwent laparoscopic tumor resection, between January 2000 and June 2021, with a maximum tumor diameter of ≤ 60 mm and without image-defined risk factors (IDRFs) at surgery. Data from 35 abdominal neuroblastoma resections were reviewed and compared between the laparotomy and laparoscopic groups. RESULTS Nineteen patients underwent laparotomy and 16 had laparoscopic tumor resection. All laparoscopic surgeries achieved complete resection without conversion to open surgery. Median blood loss was significantly lower in the laparoscopic group (0.6 mL/kg) than in the laparotomy group (8.4 mL/kg) (P < 0.0001). There were two locoregional recurrences in the laparoscopic group and two metastatic recurrences in the laparotomy group. Five-year overall survival was 93.8% in both groups. CONCLUSION Laparoscopic resection of abdominal neuroblastomas in children is a feasible and safe procedure for tumors ≤ 60 mm in diameter with no IDRFs at surgery, with long-term outcomes equivalent to laparotomy.
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Affiliation(s)
- Masahiro Zenitani
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan.
| | - Masayuki Yoshida
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan
| | - Sayaka Matsumoto
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan
| | - Takaaki Sakai
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan
| | - Rei Matsuura
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan
| | - Satoshi Umeda
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan
| | - Noriaki Usui
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan
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Wang JX, Cao ZY, Wang CX, Zhang HY, Fan FL, Zhang J, He XY, Liu NJ, Liu JB, Zou L. Prognostic impact of tumor size on patients with neuroblastoma in a SEER-based study. Cancer Med 2022; 11:2779-2789. [PMID: 35315591 PMCID: PMC9302263 DOI: 10.1002/cam4.4653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/23/2022] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Objective The prognostic value of tumor size in neuroblastoma (NB) patients has not been fully evaluated. Our purpose is to elucidate the prognostic significance of tumor size in surgery performed on neuroblastoma patients. Methods Neuroblastoma patients diagnosed from 2004 to 2015 were selected from the Surveillance, Epidemiology, and End Results Program (SEER) for the study. Univariate and multivariate Cox proportional hazard regression models were used to identify risk factors and the independent prognostic influences of tumor size on NB patients. Overall survival (OS) was analyzed through univariate Cox regression analysis. To determine the optimal cutoff value of tumor size, we first divided the cohort into three groups (≤5 cm, 5–10 cm, >10 cm). Subsequently, the patients were divided into two groups repeatedly, with tumor size at 1 cm intervals. The cutoff value that maximized prognostic outcome difference was selected. Furthermore, we performed the Kaplan–Meier methods to visually present differences in prognosis between the optimal tumor size cutoff value in different subgroups. Results A total of 591 NB patients who met the inclusion criteria were selected from the SEER database in this study. Cox analysis showed that age >1 year (HR = 2.42, p < 0.0001), originate from adrenal site (HR = 1.7, p = 0.014), distant stage (HR = 6.4, p < 0.0001), undifferentiated grade (HR = 1.94, p = 0.002), and large tumor size (HR = 1.5, p < 0.0001) independently predicted poor prognosis. For tumor size, there were significant differences in tumor size distribution in different ages, tumor grade, disease stage, and primary site subgroup but not in sex, race, and histology subgroup. Furthermore, both univariate (HR = 4.96, 95% CI 2.31–10.63, p < 0.0001) and multivariable analysis (HR = 2.8, 95% CI 1.29–6.08, p < 0.0001) indicated the optimal cutoff value of tumor size was 4 cm for overall survival of NB patients. Using a 4 cm of tumor size cutoff in subgroups, we found that it can identify poor prognosis patients whatever their age or primary site. Interestingly, tumor size of 4 cm cutoff can only identify unfavorable NB patients with diagnosis at distant‐stage disease, or differentiated grade tumor, but not with regional and local or undifferentiated tumor. Conclusions Tumor size is first to be recognized as a key prognostic factor of neuroblastoma patients and a cutoff value >4 cm might predict poor prognosis, which should be included in the evaluation of prognostic factors for NB.
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Affiliation(s)
- Jin-Xia Wang
- Clinical Research Unit, Children's Hospital of Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zi-Yang Cao
- Clinical Research Unit, Children's Hospital of Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chun-Xia Wang
- Clinical Research Unit, Children's Hospital of Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong-Yang Zhang
- Clinical Research Unit, Children's Hospital of Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fei-Long Fan
- General Surgery Department, Children's Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Jun Zhang
- Surgical Oncology Department, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xiao-Yan He
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Nan-Jing Liu
- Department of Clinical Laboratory, Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital & Chongqing Cancer Institute & Chongqing Cancer Hospital, Chongqing, China
| | - Jiang-Bin Liu
- General Surgery Department, Children's Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Lin Zou
- Clinical Research Unit, Children's Hospital of Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Mansfield SA, McCarville MB, Lucas JT, Krasin MJ, Federico SM, Santana VM, Furman WL, Davidoff AM. Impact of Neoadjuvant Chemotherapy on Image-Defined Risk Factors in High-Risk Neuroblastoma. Ann Surg Oncol 2022; 29:661-670. [PMID: 34215956 PMCID: PMC8688258 DOI: 10.1245/s10434-021-10386-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/11/2021] [Indexed: 01/03/2023]
Abstract
PURPOSE Image-defined risk factors (IDRFs) are associated with surgical risks in neuroblastoma. We sought to evaluate the impact of neoadjuvant therapy on IDRFs and associated ability to achieve gross total resection (GTR) of locoregional disease in patients with high-risk neuroblastoma. METHODS We retrospectively reviewed charts of patients treated on four consecutive high-risk neuroblastoma protocols over a 20-year period at a single institution. The number of IDRFs at diagnosis and just prior to surgery, and the percent decrease of tumor volume from just prior to surgery to the end of induction were determined. RESULTS Eighty-eight patients were included. There were 438 IDRFs (average 5.0 ± 3.1 per patient) at diagnosis and 198 (average 2.3 ± 1.9 per patient) after neoadjuvant chemotherapy (p < 0.01). A reduction in IDRFs was seen in 81.8% of patients with average decrease of 2.9 ± 2.5 per patient. The average percent reduction in tumor volume was 89.8 ± 18.9% and correlated with the number of IDRFs present after chemotherapy (p < 0.01). Three or fewer IDRFs prior to surgery was associated with the highest odds ratio for > 90% GTR at 9.33 [95% confidence interval 3.14-31.5]. CONCLUSION Neoadjuvant chemotherapy reduced the number of IDRFs in the majority of patients with high-risk neuroblastoma. The number of IDRFs present after neoadjuvant therapy correlated with the extent of resection.
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Affiliation(s)
- Sara A Mansfield
- Department of Surgery, St. Jude Children's Research Hospital, Memphis, TN, USA.
- Division of Pediatric Surgery, Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, USA.
| | - M Beth McCarville
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - John T Lucas
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Matthew J Krasin
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Sara M Federico
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Victor M Santana
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Global Pediatric Medicine, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Wayne L Furman
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Andrew M Davidoff
- Department of Surgery, St. Jude Children's Research Hospital, Memphis, TN, USA
- Division of Pediatric Surgery, Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, USA
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Zenitani M, Tsukada R, Masahata K, Nakamura K, Takama Y, Umeda S, Soh H, Yoneda A, Yonekura T, Usui N, Oue T, Okuyama H. Safety and Feasibility of Laparoscopic Resection of Neuroblastoma Without Image-Defined Risk Factors Performed by Pediatric Surgical Trainees: A Multicenter Comparison Study. J Laparoendosc Adv Surg Tech A 2021; 31:954-958. [PMID: 34030470 DOI: 10.1089/lap.2020.0957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction: Laparoscopic resection has gradually been adopted for neuroblastoma patients; however, some authors reported that, due to its technically demanding procedures, this operation should be performed only by highly experienced surgeons. The aim of this study was to evaluate the safety and feasibility of laparoscopic resection of abdominal neuroblastoma by pediatric surgical trainees. Subjects and Methods: In this multicenter, retrospective study, including 18 children with abdominal neuroblastoma indicated for 19 laparoscopic resections (1 with bilateral neuroblastomas) from 1999 to 2018, the clinical data were retrospectively reviewed and compared between trainee and attending surgeons. Results: None of the cases had image-defined risk factors (IDRFs) at surgery. All patients successfully underwent complete laparoscopic resection without blood transfusion, open conversion, or intraoperative or postoperative complications. Of the 19 cases, 6 were performed by pediatric surgical trainees under the guidance of attending surgeons, and 13 were performed by attending surgeons. With comparable tumor, largest diameter, operative time, and bleeding amount were not significantly different between the two groups. In the trainee surgeon group, one local recurrence occurred at a secondary resection site in the bilateral neuroblastoma patient with Stage L2. Conclusions: Laparoscopic resection of neuroblastoma could be safe and feasible when limited to absent IDRFs at surgery by pediatric surgical trainees under the guidance of experienced attending surgeons, as well as by attending surgeons.
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Affiliation(s)
- Masahiro Zenitani
- Department of Pediatric Surgery, Hyogo College of Medicine, Nishinomiya, Japan
| | - Ryo Tsukada
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kazunori Masahata
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kyoko Nakamura
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Yuichi Takama
- Department of Pediatric Surgery, Kindai University Nara Hospital, Ikoma, Japan
| | - Satoshi Umeda
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Hideki Soh
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Akihiro Yoneda
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Takeo Yonekura
- Department of Pediatric Surgery, Kindai University Nara Hospital, Ikoma, Japan
| | - Noriaki Usui
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Takaharu Oue
- Department of Pediatric Surgery, Hyogo College of Medicine, Nishinomiya, Japan
| | - Hiroomi Okuyama
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Japan
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Temple WC, Vo KT, Matthay KK, Balliu B, Coleman C, Michlitsch J, Phelps A, Behr S, Zapala MA. Association of image-defined risk factors with clinical features, histopathology, and outcomes in neuroblastoma. Cancer Med 2020; 10:2232-2241. [PMID: 33314708 PMCID: PMC7982630 DOI: 10.1002/cam4.3663] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/05/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Clinical, molecular, and histopathologic features guide treatment for neuroblastoma, but obtaining tumor tissue may cause complications and is subject to sampling error due to tumor heterogeneity. We hypothesized that image-defined risk factors (IDRFs) would reflect molecular features, histopathology, and clinical outcomes in neuroblastoma. METHODS We performed a retrospective cohort study of 76 patients with neuroblastoma or ganglioneuroblastoma. Diagnostic CT scans were reviewed for 20 IDRFs, which were consolidated into five IDRF groups (involvement of multiple body compartments, vascular encasement, tumor infiltration of adjacent organs/structures, airway compression, or intraspinal extension). IDRF groups were analyzed for association with clinical, molecular, and histopathologic features of neuroblastoma. RESULTS Patients with more IDRF groups had a higher risk of surgical complications (OR = 3.1, p = 0.001). Tumor vascular encasement was associated with increased risk of surgical complications (OR = 5.40, p = 0.009) and increased risk of undifferentiated/poorly differentiated histologic grade (OR = 11.11, p = 0.013). Tumor infiltration of adjacent organs and structures was associated with decreased survival (HR = 8.90, p = 0.007), MYCN amplification (OR = 9.91, p = 0.001), high MKI (OR = 6.20, p = 0.003), and increased risk of International Neuroblastoma Staging System stage 4 disease (OR = 8.96, p < 0.001). CONCLUSIONS The presence of IDRFs at diagnosis was associated with high-risk clinical, molecular, and histopathologic features of neuroblastoma. The IDRF group tumor infiltration into adjacent organs and structures was associated with decreased survival. Collectively, these findings may assist surgical planning and medical management for neuroblastoma patients.
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Affiliation(s)
- William C Temple
- Department of Pediatrics, UCSF School of Medicine and UCSF Benioff Children's Hospital, San Francisco, CA, USA
| | - Kieuhoa T Vo
- Department of Pediatrics, UCSF School of Medicine and UCSF Benioff Children's Hospital, San Francisco, CA, USA
| | - Katherine K Matthay
- Department of Pediatrics, UCSF School of Medicine and UCSF Benioff Children's Hospital, San Francisco, CA, USA
| | | | - Christina Coleman
- Department of Hematology and Oncology, UCSF Benioff Children's Hospital, Oakland, Oakland, CA, USA
| | - Jennifer Michlitsch
- Department of Hematology and Oncology, UCSF Benioff Children's Hospital, Oakland, Oakland, CA, USA
| | - Andrew Phelps
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA
| | - Spencer Behr
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA
| | - Matthew A Zapala
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA
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10
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Liu T, Lv Z, Xu W, Liu J, Sheng Q. Role of image-defined risk factors in predicting surgical complications of localized neuroblastoma. Pediatr Surg Int 2020; 36:1167-1172. [PMID: 32851471 PMCID: PMC7449514 DOI: 10.1007/s00383-020-04731-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/12/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE To explore the relationship between image-defined risk factors and surgical complications of localized neuroblastoma. METHODS We retrospectively evaluated 84 patients who met the inclusion criteria at our hospitals between June 2014 and June 2019. Patients' clinic data were collected and the common terminology criteria for adverse events were used to categorize complications as major (grade 3-4) or minor (grade 1-2). RESULTS Four (11.8%) out of 34 stage L1 patients and 15 (30.0%) out of 50 stage L2 patients had surgical complications (P < 0.05). Seventy patents underwent primary surgery, including all stage L1 patients and 36 stage L2 patients. There were no significant differences between the two groups regarding surgical complications or major surgical complications. Among stage L2 patients, 2 (5.6%) out of 36 who underwent primary surgery and 2 (14.3%) out of 14 who underwent secondary surgery had major surgical complications (P < 0.05). Complete tumor resection was achieved in 18 (50%) and 7 (50%) patients in each group (P > 0.05). The mean numbers of IDRFs were 2.06 and 4.29, respectively (P < 0.05). CONCLUSIONS Localized neuroblastoma patients with IDRFs have a greater surgical risk. And the number of IDRFs is not ignorable, especially in predicting major surgical complications.
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Affiliation(s)
- Tao Liu
- Department of General Surgery, Children's Hospital of Shanghai, Shanghai Jiao Tong University, Shanghai, 200040, China
| | - Zhibao Lv
- Department of General Surgery, Children's Hospital of Shanghai, Shanghai Jiao Tong University, Shanghai, 200040, China.
| | - Weijue Xu
- Department of General Surgery, Children's Hospital of Shanghai, Shanghai Jiao Tong University, Shanghai, 200040, China
| | - Jiangbin Liu
- Department of General Surgery, Children's Hospital of Shanghai, Shanghai Jiao Tong University, Shanghai, 200040, China
| | - Qingfeng Sheng
- Department of General Surgery, Children's Hospital of Shanghai, Shanghai Jiao Tong University, Shanghai, 200040, China
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11
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Parhar D, Joharifard S, Lo AC, Schlosser MP, Daodu OO. How well do image-defined risk factors (IDRFs) predict surgical outcomes and survival in patients with neuroblastoma? A systematic review and meta-analysis. Pediatr Surg Int 2020; 36:897-907. [PMID: 32533235 DOI: 10.1007/s00383-020-04696-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/08/2020] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Since their introduction to the International Neuroblastoma Risk Group (INRG) staging system in 2009, the role of Image-Defined Risk Factors (IDRFs) in predicting outcomes has been studied in heterogeneous populations with varying results. We conducted a systematic review and meta-analysis in order to determine quantitative measures of precisely how well pre-treatment IDRFs predict surgical outcomes and survival. METHODS A systematic review was performed for studies between January 1990 and July 2019 that compared surgical outcomes and/or survival in pediatric neuroblastoma patients with one or more IDRFs to patients without IDRFs. Summary risk ratios (RR) and hazard ratios (HR) were calculated using a random-effects model. RESULTS 19 retrospective cohort studies were included, representing data from 1132 patients. The risk ratio (RR) of incomplete surgical resection in IDRF-positive patients compared to IDRF-negative patients was 2.45 (95% CI 1.51-3.97). The RR of surgical complications was 2.30 (95% CI 1.46-3.61). The hazard ratio (HR) for 5-year EFS was 2.08 (95% CI 2.93-4.13) while the 5-year HR for OS was 2.44 (95% CI 1.46-4.08). CONCLUSION IDRF-positive neuroblastoma patients have a higher risk of incomplete surgical resection, surgical complications, and 5-year mortality and/or relapse. Our results affirm that IDRFs remain a useful prognostic tool for neuroblastoma patients both for short and long-term outcomes. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Dennis Parhar
- Department of Radiology, University of British Columbia, Gordon & Leslie Diamond Health Centre, 11th Floor, 2775 Laurel Street, Vancouver, BC, V5Z 1M9, Canada.
| | - Shahrzad Joharifard
- Departément de Chirurgie, Division de Chirurgie Pédiatrique, Université de Montréal, Montréal, QC, Canada
| | - Andrea C Lo
- Department of Radiation Oncology, BC Cancer, Vancouver, BC, Canada
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - Mary-Pat Schlosser
- Department of Pediatric Medicine, Division of Immunology, Hematology/Oncology, Palliative Care and Environmental Medicine, University of Alberta, Edmonton, AB, Canada
| | - Oluwatomilayo O Daodu
- Department of Surgery, Division of Pediatric Surgery, University of Calgary, Calgary, AB, Canada
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12
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Zhang AA, Pan C, Xu M, Wang XX, Ye QD, Gao YJ, Tang JY. Association of image-defined risk factors, tumor resectability, and prognosis in children with localized neuroblastoma. World J Pediatr 2019; 15:572-579. [PMID: 31342464 DOI: 10.1007/s12519-019-00274-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 05/26/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND Although localized neuroblastoma has a good prognosis, some cases have undergone treatment failure or recurrence. Apart from biologic features such as MYCN status, we wondered whether some characteristics of growing tumors are prognostic, such as a well-encapsulated mass without infiltration of vital organs. We analyzed the diagnostic utility of image-defined risk factors (IDRFs) to predict successful treatment and prognosis. The overall goal was to achieve maximum cure rates for patients with localized neuroblastoma through a better understanding of clinical characteristics. METHODS We retrospectively reviewed the images of patients with localized neuroblastoma who were enrolled between June 1998 and December 2012 at a single institution in Shanghai, China. Unequivocal categorization regarding IDRFs was available in 67 patients. IDRF was assessed at diagnosis and after four cycles of neoadjuvant chemotherapy, on average. The median follow-up period was 84 months (range: 48-132 months) after diagnosis. RESULTS MRI and CT indicated a total of 177 IDRFs in these 67 patients. Logistic regression analysis revealed a highly significant negative correlation between the numbers of IDRFs and the possibility of complete removal of neuroblastoma. Intraspinal extension of the tumor, compression of the trachea, and encasement of the main artery in localized neuroblastoma were predictors for incomplete tumor resection. According to univariate analysis, ≥ 4 IDRFs and intraspinal extension of the tumor were significant indicators of poor prognosis. CONCLUSIONS The number of IDRFs was useful in predicting surgical outcome and event-free survival. The number of IDRFs should be considered in protocol planning, instead of IDRF presence or absence.
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Affiliation(s)
- An-An Zhang
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China
| | - Ci Pan
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China
| | - Min Xu
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China
| | - Xiao-Xia Wang
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China
| | - Qi-Dong Ye
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China
| | - Yi-Jin Gao
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China
| | - Jing-Yan Tang
- Key Laboratory of Pediatric Hematology and Oncology, Ministry of Health, Department of Pediatric Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine (SJTU-SM), Shanghai, China.
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13
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Nakagawara A, Li Y, Izumi H, Muramori K, Inada H, Nishi M. Neuroblastoma. Jpn J Clin Oncol 2018; 48:214-241. [PMID: 29378002 DOI: 10.1093/jjco/hyx176] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 02/07/2023] Open
Abstract
Neuroblastoma is one of the most common solid tumors in children and has a diverse clinical behavior that largely depends on the tumor biology. Neuroblastoma exhibits unique features, such as early age of onset, high frequency of metastatic disease at diagnosis in patients over 1 year of age and the tendency for spontaneous regression of tumors in infants. The high-risk tumors frequently have amplification of the MYCN oncogene as well as segmental chromosome alterations with poor survival. Recent advanced genomic sequencing technology has revealed that mutation of ALK, which is present in ~10% of primary tumors, often causes familial neuroblastoma with germline mutation. However, the frequency of gene mutations is relatively small and other aberrations, such as epigenetic abnormalities, have also been proposed. The risk-stratified therapy was introduced by the Japan Neuroblastoma Study Group (JNBSG), which is now moving to the Neuroblastoma Committee of Japan Children's Cancer Group (JCCG). Several clinical studies have facilitated the reduction of therapy for children with low-risk neuroblastoma disease and the significant improvement of cure rates for patients with intermediate-risk as well as high-risk disease. Therapy for patients with high-risk disease includes intensive induction chemotherapy and myeloablative chemotherapy, followed by the treatment of minimal residual disease using differentiation therapy and immunotherapy. The JCCG aims for better cures and long-term quality of life for children with cancer by facilitating new approaches targeting novel driver proteins, genetic pathways and the tumor microenvironment.
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Affiliation(s)
| | - Yuanyuan Li
- Laboratory of Molecular Biology, Life Science Research Institute, Saga Medical Center Koseikan
| | - Hideki Izumi
- Laboratory of Molecular Biology, Life Science Research Institute, Saga Medical Center Koseikan
| | | | - Hiroko Inada
- Department of Pediatrics, Saga Medical Center Koseikan
| | - Masanori Nishi
- Department of Pediatrics, Saga University, Saga 849-8501, Japan
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Qureshi SS, Bhagat M, Harris C, Chinnaswamy G, Vora T, Kembhavi S, Prasad M, Ramadwar M, Shetty O, Laskar S, Khanna N, Amin N, Talole S. Outcomes and complications of surgery in patients with intermediate-risk neuroblastoma: experience from an Indian tertiary Cancer Centre. Pediatr Surg Int 2018; 34:435-442. [PMID: 29487992 DOI: 10.1007/s00383-018-4241-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/17/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE The treatment of intermediate risk (IR) neuroblastoma has evolved with the focus now on reducing the drugs, dosage, and duration of chemotherapy. The aim of this study is to present the outcomes of treatment and the complications of surgery in patients with IR neuroblastoma treated at a tertiary cancer center in India. METHODS All eligible patients with IR neuroblastoma treated between April 2005 and August 2016 were identified. The presence and number of image-defined risk factors (IDRF) before and after neoadjuvant chemotherapy were retrospectively analyzed as were the extent of surgery, complications, and outcomes. RESULTS Of 282 neuroblastoma patients treated during the study period, 54 had IR neuroblastoma. Complete excision was achieved in 25 patients. There were 26 surgical complications in 22 patients with a similar incidence in patients with complete (n = 13) or incomplete (n = 13) resection (p = 0.78). After a median follow-up of 47 months, the 4-year overall and event-free survival was 91.5% and 75%, respectively. There was no difference in survival between patients who underwent complete resection versus those with incomplete resection (p = 0.9). CONCLUSION Outcomes of IR neuroblastoma are favorable. The extent of resection does not affect the survival and complications can occur even when the resection is incomplete.
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Affiliation(s)
- Sajid S Qureshi
- Division of Pediatric Surgical Oncology, Department of Surgical Oncology, Tata Memorial Centre, Ernest Borges Road, Parel, Bombay, 400012, India.
| | - Monica Bhagat
- Division of Pediatric Surgical Oncology, Department of Surgical Oncology, Tata Memorial Centre, Ernest Borges Road, Parel, Bombay, 400012, India
| | - Caleb Harris
- Division of Pediatric Surgical Oncology, Department of Surgical Oncology, Tata Memorial Centre, Ernest Borges Road, Parel, Bombay, 400012, India
| | - Girish Chinnaswamy
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Centre, Bombay, India
| | - Tushar Vora
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Centre, Bombay, India
| | - Seema Kembhavi
- Department of Radiology, Tata Memorial Centre, Bombay, India
| | - Maya Prasad
- Division of Pediatric Oncology, Department of Medical Oncology, Tata Memorial Centre, Bombay, India
| | - Mukta Ramadwar
- Department of Pathology and Molecular Genetics, Tata Memorial Centre, Bombay, India
| | - Omshree Shetty
- Department of Pathology and Molecular Genetics, Tata Memorial Centre, Bombay, India
| | - Siddharth Laskar
- Department of Radiation Oncology, Tata Memorial Centre, Bombay, India
| | - Nehal Khanna
- Department of Radiation Oncology, Tata Memorial Centre, Bombay, India
| | - Nayna Amin
- Department of Anaesthesia, Tata Memorial Centre, Bombay, India
| | - Sanjay Talole
- Department of Biostatistics, Tata Memorial Centre, Bombay, India
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15
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Li Y, Zhuo B, Yin Y, Han T, Li S, Li Z, Wang J. Anti-cancer effect of oncolytic adenovirus-armed shRNA targeting MYCN gene on doxorubicin-resistant neuroblastoma cells. Biochem Biophys Res Commun 2017; 491:134-139. [PMID: 28711493 DOI: 10.1016/j.bbrc.2017.07.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 07/11/2017] [Indexed: 11/19/2022]
Abstract
Chemotherapy is one of the few effective choices for patients with neuroblastoma. However, the development of muti-drug resistance (MDR) to chemotherapy is a major obstacle to the effective treatment of advanced or recurrent neuroblastoma. The muti-drug resistance-associated protein (MRP), which encodes a transmembrane glycoprotein, is a key regulator of MDR. The expression of MRP is a close correlation with MYCN oncogene in neuroblastoma. We have recently shown ZD55-shMYCN (oncolytic virus armed with shRNA against MYCN) can down-regulate MYCN to inhibit tumor cells proliferation and induce apoptosis in neuroblastoma. Here we further report ZD55-shMYCN re-sensitized doxorubicin-resistant cells to doxorubicin (as shown by reduced proliferation, increased apoptosis, and inhibited cell migration), and reduced the in vivo growth rate of neuroblastoma xenografts by down-regulation of MRP expression. Sequential therapy with doxorubicin did not affect the replication of ZD55-shMYCN in doxorubicin-resistant neuroblastoma cells, but decreased the expression of Bcl-2, Bcl-XL, MMP-1. Thus, this synergistic effect of ZD55-shMYCN in combination with doxorubicin provides a novel therapy strategy for doxorubicin-resistant neuroblastoma, and is a promising approach for further clinical development.
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Affiliation(s)
- Yuan Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, 92 Zhongnan Street, Suzhou, Jiangsu 215025, China; Department of Pediatric Surgery, Xuzhou Children's Hospital, 18 Suti North Road, Xuzhou, Jiangsu 221006, China
| | - Baobiao Zhuo
- Department of Pediatric Surgery, Xuzhou Children's Hospital, 18 Suti North Road, Xuzhou, Jiangsu 221006, China
| | - Yiyu Yin
- Department of Pediatric Surgery, Xuzhou Children's Hospital, 18 Suti North Road, Xuzhou, Jiangsu 221006, China
| | - Tao Han
- Department of Pediatric Surgery, Xuzhou Children's Hospital, 18 Suti North Road, Xuzhou, Jiangsu 221006, China
| | - Shixian Li
- Department of Pediatric Surgery, Xuzhou Children's Hospital, 18 Suti North Road, Xuzhou, Jiangsu 221006, China
| | - Zhengwei Li
- Department of Pediatric Surgery, Xuzhou Children's Hospital, 18 Suti North Road, Xuzhou, Jiangsu 221006, China
| | - Jian Wang
- Institute of Pediatric Research, Children's Hospital of Soochow University, 92 Zhongnan Street, Suzhou, Jiangsu 215025, China.
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