Cancer Research and Treatment

Original Articles

Pediatric cancer

Epidemiologic and Clinical Outcomes of Pediatric Renal Tumors in Korea: A Retrospective Analysis of The Korean Pediatric Hematology and Oncology Group (KPHOG) Data: Kyung-Nam Koh, Jung Woo Han, Hyoung Soo Choi, Hyoung Jin Kang, Ji Won Lee, Keon Hee Yoo, Ki Woong Sung, Hong Hoe Koo, Kyung Taek Hong, Jung Yoon Choi, Sung Han Kang, Hyery Kim, Ho Joon Im, Seung Min Hahn, Chuhl Joo Lyu, Hee-Jo Baek, Hoon Kook, Kyung Mi Park, Eu Jeen Yang, Young Tak Lim, Seongkoo Kim, Jae Wook Lee, Nack-Gyun Chung, Bin Cho, Meerim Park, Hyeon Jin Park, Byung-Kiu Park, Jun Ah Lee, Jun Eun Park, Soon Ki Kim, Ji Yoon Kim, Hyo Sun Kim, Youngeun Ma, Kyung Duk Park, Sang Kyu Park, Eun Sil Park, Ye Jee Shim, Eun Sun Yoo, Kyung Ha Ryu, Jae Won Yoo, Yeon Jung Lim, Hoi Soo Yoon, Mee Jeong Lee, Jae Min Lee, In-Sang Jeon, Hye Lim Jung, Hee Won Chueh, Seunghyun Won, the Korean Pediatric Hematology and Oncology Group (KPHOG); Cancer Res Treat. 2023;55(1):279-290. Published online August 11, 2022; DOI: https://doi.org/10.4143/crt.2022.073

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Purpose
Renal tumors account for approximately 7% of all childhood cancers. These include Wilms tumor (WT), clear cell sarcoma of the kidney (CCSK), malignant rhabdoid tumor of the kidney (MRTK), renal cell carcinoma (RCC), congenital mesoblastic nephroma (CMN) and other rare tumors. We investigated the epidemiology of pediatric renal tumors in Korea.
Materials and Methods
From January 2001 to December 2015, data of pediatric patients (0–18 years) newly-diagnosed with renal tumors at 26 hospitals were retrospectively analyzed.
Results
Among 439 patients (male, 240), the most common tumor was WT (n=342, 77.9%), followed by RCC (n=36, 8.2%), CCSK (n=24, 5.5%), MRTK (n=16, 3.6%), CMN (n=12, 2.7%), and others (n=9, 2.1%). Median age at diagnosis was 27.1 months (range 0-225.5) and median follow-up duration was 88.5 months (range 0-211.6). Overall, 32 patients died, of whom 17, 11, 1, and 3 died of relapse, progressive disease, second malignant neoplasm, and treatment-related mortality. Five-year overall survival and event free survival were 97.2% and 84.8% in WT, 90.6% and 82.1% in RCC, 81.1% and 63.6% in CCSK, 60.3% and 56.2% in MRTK, and 100% and 91.7% in CMN, respectively (p < 0.001).
Conclusion
The pediatric renal tumor types in Korea are similar to those previously reported in other countries. WT accounted for a large proportion and survival was excellent. Non-Wilms renal tumors included a variety of tumors and showed inferior outcome, especially MRTK. Further efforts are necessary to optimize the treatment and analyze the genetic characteristics of pediatric renal tumors in Korea.

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Hope and challenges in the diagnosis and treatment of Wilms tumor: a single-center retrospective study in China
Kongkong Cui, Peng Hong, Jie Lin, Zaihong Hu, Zhiqiang Gao, XiaoMao Tian, Tao Lin, Qinlin Shi, Guanghui Wei
Frontiers in Pediatrics.2025;[Epub] CrossRef
Congenital Mesoblastic Nephroma Mimic Wilms Tumor on 18F-FDG PET/CT and PET/MR
Wenzhu Hu, Chunxia Qin, Fuqiang Shao, Mengting Li, Xiaoli Lan
Clinical Nuclear Medicine.2024; 49(4): 353. CrossRef
Progress towards Therapies for Solid Renal Tumors in Children
洁林
Advances in Clinical Medicine.2024; 14(06): 245. CrossRef

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Clinical Characteristics and Treatment Outcomes of Childhood Acute Promyelocytic Leukemia in Korea: A Nationwide Multicenter Retrospective Study by Korean Pediatric Oncology Study Group: Kyung Mi Park, Keon Hee Yoo, Seong Koo Kim, Jae Wook Lee, Nack-Gyun Chung, Hee Young Ju, Hong Hoe Koo, Chuhl Joo Lyu, Seung Min Han, Jung Woo Han, Jung Yoon Choi, Kyung Taek Hong, Hyoung Jin Kang, Hee Young Shin, Ho Joon Im, Kyung-Nam Koh, Hyery Kim, Hoon Kook, Hee Jo Baek, Bo Ram Kim, Eu Jeen Yang, Jae Young Lim, Eun Sil Park, Eun Jin Choi, Sang Kyu Park, Jae Min Lee, Ye Jee Shim, Ji Yoon Kim, Ji Kyoung Park, Seom Gim Kong, Young Bae Choi, Bin Cho, Young Tak Lim; Cancer Res Treat. 2022;54(1):269-276. Published online April 20, 2021; DOI: https://doi.org/10.4143/crt.2021.313

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Purpose
Acute promyelocytic leukemia (APL) is a rare disease in children and there are some different characteristics between children and adult. We aimed to evaluate incidence, clinical characteristics and treatment outcomes of pediatric APL in Korea.
Materials and Methods
Seventy-nine pediatric APL patients diagnosed from January 2009 to December 2016 in 16 tertiary medical centers in Korea were reviewed retrospectively.
Results
Of 801 acute myeloid leukemia children, 79 (9.9%) were diagnosed with APL. The median age at diagnosis was 10.6 years (range, 1.3 to 18.0). Male and female ratio was 1:0.93. Thirty patients (38.0%) had white blood cell (WBC) count greater than 10×10⁹/L at diagnosis. All patients received induction therapy consisting of all-trans retinoic acid and chemotherapy. Five patients (6.6%) died during induction chemotherapy and 66 patients (86.8%) achieved complete remission (CR) after induction chemotherapy. The causes of death were three intracranial hemorrhage, one cerebral infarction, and one sepsis. Five patients (7.1%) suffered a relapse during or after maintenance chemotherapy. The estimated 4-year event-free survival and overall survival (OS) rates were 82.1%±4.4%, 89.7%±5.1%, respectively. The 4-year OS was significantly higher in patients with initial WBC < 10×10⁹/L than in those with initial WBC ≥ 10×10⁹/L (p=0.020).
Conclusion
This study showed that the CR rates and survival outcomes in Korean pediatric APL patients were relatively good. The initial WBC count was the most important prognostic factor and most causes of death were related to serious bleeding in the early stage of treatment.

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Management of Acute Promyelocytic Leukemia at Extremes of Age
Sabine Kayser, Shannon E. Conneely
Cancers.2023; 15(14): 3637. CrossRef
Current Challenges of Asian National Children's Cancer Study Groups on Behalf of Asian Pediatric Hematology and Oncology Group
Chi-kong Li, Purna Kurkure, Ramandeep Singh Arora, Bow Wen Chen, Kirill Kirgizov, Yasuhiro Okamoto, Panya Seksarn, Yongmin Tang, Keon Hee Yoo, Bharat Agarwal, Godfrey C.F. Chan, Rashmi Dalvi, Hiroki Hori, Muhammad Saghir Khan, Alice Yu, Akira Nakagawara
JCO Global Oncology.2023;[Epub] CrossRef
Childhood acute promyelocytic leukemia in a pediatric cancer referral center in Baghdad, Iraq. Improved results with ATRA extended consolidation
Anna Maria Testi, Mazin Faisal Al-Jadiry, Hasanein Habeeb Ghali, Samaher Abdulrazzaq Fadhil, Amir Fadhil Al-Darraji, Raghad Majid Al-Saeed, Ahmed Hatem Sabhan, Safaa A. Faraj Al-Badri, Wisan Majeed Abed, Najiha Ahmed Ameen, Ruaa Zaki Al-Tameemi, Arabiya I
Leukemia & Lymphoma.2022; 63(12): 2940. CrossRef
Death due to unsuspected acute myeloid leukaemia: an unusual forensic diagnosis
Lila Krebs-Drouot, Georgia Karpathiou, Virginie Scolan, Carolyne Bidat-Callet, Baptiste Boyer, Michel Péoc’h
Forensic Science, Medicine and Pathology.2022; 19(1): 60. CrossRef
Successful Treatment of Isolated Central Nervous System Relapse with Intrathecal Chemotherapy in an Adolescent with Acute Promyelocytic Leukemia
Haerim Song, Eun Sang Yi
Clinical Pediatric Hematology-Oncology.2022; 29(2): 70. CrossRef

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Effectiveness and Safety of Clofarabine Monotherapy or Combination Treatment in Relapsed/Refractory Childhood Acute Lymphoblastic Leukemia: A Pragmatic, Non-interventional Study in Korea: Jung Yoon Choi, Che Ry Hong, Kyung Taek Hong, Hyoung Jin Kang, Seongkoo Kim, Jae Wook Lee, Pil Sang Jang, Nack-Gyun Chung, Bin Cho, Hyery Kim, Kyung-Nam Koh, Ho Joon Im, Jong Jin Seo, Seung Min Hahn, Jung Woo Han, Chuhl Joo Lyu, Eu Jeen Yang, Young Tak Lim, Keon Hee Yoo, Hong Hoe Koo, Hoon Kook, In Sang Jeon, Hana Cho, Hee Young Shin; Cancer Res Treat. 2021;53(4):1184-1194. Published online January 4, 2021; DOI: https://doi.org/10.4143/crt.2020.289

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Purpose
Effectiveness and safety of clofarabine (one of the treatment mainstays in pediatric patients with relapsed/refractory acute lymphoblastic leukemia [ALL]) was assessed in Korean pediatric patients with ALL to facilitate conditional coverage with evidence development.
Materials and Methods
In this multicenter, prospective, observational study, patients receiving clofarabine as mono/combination therapy were followed up every 4-6 weeks for 6 months or until hematopoietic stem cell transplantation (HSCT). Response rates, survival outcomes, and adverse events were assessed.
Results
Sixty patients (2-26 years old; 65% B-cell ALL, received prior ≥ 2 regimen, 68.3% refractory to previous regimen) were enrolled and treated with at least one dose of clofarabine; of whom 26 (43.3%) completed 6 months of follow-up after the last dose of clofarabine. Fifty-eight patients (96.7%) received clofarabine combination therapy. Overall remission rate (complete remission [CR] or CR without platelet recovery [CRp]) was 45.0% (27/60; 95% confidence interval [CI], 32.4 to 57.6) and the overall response rate (CR, CRp, or partial remission [PR]) was 46.7% (28/60; 95% CI, 34.0 to 59.3), with 11 (18.3%), 16 (26.7%), and one (1.7%) patients achieving CR, CRp, and PR, respectively. The median time to remission was 5.1 weeks (95% CI, 4.7 to 6.1). Median duration of remission was 16.6 weeks (range, 2.0 to 167.6 weeks). Sixteen patients (26.7%) proceeded to HSCT. There were 24 deaths; 14 due to treatment-emergent adverse events.
Conclusion
Remission with clofarabine was observed in approximately half of the study patients who had overall expected safety profile; however, there was no favorable long-term survival outcome in this study.

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Citations to this article as recorded by

Revolutionizing cancer treatment: ROS-induced apoptosis via nanoformulated alkaloids
Swathi Putta, Santhosh Kumar Chinnaiyan, Ramadevi Korni, Venkata Radha Gadela
Journal of Drug Delivery Science and Technology.2025; 104: 106556. CrossRef
Proteomic analysis reveals chromatin remodeling as a potential therapeutical target in neuroblastoma
Zan Liu, Zitong Zhao, Longlong Xie, Zhenghui Xiao, Ming Li, Yong Li, Ting Luo
Journal of Translational Medicine.2025;[Epub] CrossRef
3′-O-β-Glucosylation of nucleoside analogues using a promiscuous bacterial glycosyltransferase
Jonathan P. Dolan, Tessa Keenan, Aisling Ní Cheallaigh, Martin A. Fascione, Gavin J. Miller
RSC Chemical Biology.2025;[Epub] CrossRef
Opciones para el tratamiento de la recaída en leucemia linfoblástica aguda. Revisión de tema
Christian Omar Ramos-Peñafiel, Carlos Martínez-Murillo, Daniela Pérez-Sámano, Camila Terreros-Palacios, Adán Germán Gallardo-Rodríguez, Irma Olarte-Carrillo, Adolfo Martínez-Tovar
Revista Médicas UIS.2024;[Epub] CrossRef
Clofarabine

Reactions Weekly.2023; 1958(1): 155. CrossRef
Patient-Level Meta-analysis of Clofarabine in Acute Lymphoblastic Leukemia
Sima Jeha, Hiroaki Goto, André Baruchel, Emmanuelle Boëlle-Le Corfec, Christine Geffriaud-Ricouard, Rob Pieters, Hee Young Shin
Advances in Therapy.2023; 40(12): 5447. CrossRef
Novel Treatments for Pediatric Relapsed or Refractory Acute B-Cell Lineage Lymphoblastic Leukemia: Precision Medicine Era
Shang Mengxuan, Zhou Fen, Jin Runming
Frontiers in Pediatrics.2022;[Epub] CrossRef

8,333 View
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