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Lei J, Wang W, Lin D, Zhu C, Jia W, Weng W, Liu X, Ma Y, Wang Z, Yang L, He X, He Y, Li Y. Vemurafenib combined with chemotherapy achieved sustained remission in pediatric LCH: a multi-center observational study. J Cancer Res Clin Oncol 2024; 150:12. [PMID: 38231288 PMCID: PMC10794359 DOI: 10.1007/s00432-023-05551-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 12/14/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Langerhans cell histiocytosis (LCH) is a myeloid neoplasia with potentially fatal consequences, and about 2/3 of cases involve the BRAFV600E kinase-activated mutation. Vemurafenib, a BRAF inhibitor, has demonstrated significant clinical improvements in LCH. However, the high relapse rate of LCH following cessation of vemurafenib therapy remains a major challenge, and alternative treatment strategies require further investigation. METHODS In this retrospective multi-center study, we evaluated the efficacy and safety of vemurafenib combined with conventional chemotherapy in patients with severe or refractory LCH. RESULTS Seventeen patients were enrolled in the study, with eleven classified as risk organ involvement (RO +). Six received the combination therapy as the primary treatment, and eleven after being refractory to prior chemotherapy. The overall response rate was 94.1%. Progression-free survival among all 17 patients was 70.6% (12/17) at a median follow-up of 32 months, and relapse-free survival among the 15 patients with discontinuation after a response was 73.3%(11/15) at a median follow-up of 34 months. Five of six patients (83.3%) with myeloid BRAFV600E mutations demonstrated molecular remission. The overall survival rate was 100%. Adverse events were mostly classified as grades 1 or 2. CONCLUSION Our data suggest that the combination of vemurafenib and chemotherapy can achieve sustained clinical and molecular level relief in children with LCH, and side effects are tolerable.
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Affiliation(s)
- Jiaying Lei
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Wenxia Wang
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Danna Lin
- Department of Pediatric Hematology and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Chengguang Zhu
- Department of Pediatric Hematology and Oncology, Hunan Provincial People's Hospital, Changsha, 410005, China
| | - Wenguang Jia
- The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Wenjun Weng
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Xiaoshan Liu
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Yuhan Ma
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Zhixuan Wang
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Lihua Yang
- Department of Pediatric Hematology and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China.
| | - Xiangling He
- Department of Pediatric Hematology and Oncology, Hunan Provincial People's Hospital, Changsha, 410005, China.
| | - Yunyan He
- The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi, China.
| | - Yang Li
- Department of Pediatric Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
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Wang W, Ge J, Ma H, Lian H, Cui L, Zhao Y, Li Z, Wang T, Zhang R. Treatment of children with refractory/relapse high risk langerhans cell histiocytosis with the combination of cytarabine, vindesine and prednisone. BMC Pediatr 2024; 24:1. [PMID: 38172736 PMCID: PMC10763196 DOI: 10.1186/s12887-023-04465-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The patients with multisystem and risk organ involvement Langerhans cell histiocytosis (MS-RO + LCH) have poor prognosis. The patients with MS-LCH who failed front-line therapy have a high mortality rate and the standard salvage treatment has not been established. The combination of cytarabine (Ara-c), vincristine (VCR) and prednisone might be effective for refractory/relapse MS-RO + LCH, with low toxicity. METHODS We retrospectively analyzed pediatric refractory/relapse MS-RO + LCH patients treated with the low-dose Ara-c (100mg/m2/d×5days) or high-dose Ara-c (500mg/m2/d×5days) combined with vindesine (VDS) and prednisone in a single center. The efficacy, outcomes and adverse events were analyzed. RESULTS From January 2013 to December 2016, 13 patients receiving the low-dose Ara-c chemotherapy (LAC) and 7 patients receiving the high-dose Ara-c chemotherapy (HAC) were included in the study. 11 (84.6%) of the 13 patients treated with the LAC regimen and 6 (85.7%) of the 7 patients treated with the HAC regimen had response after four courses of the therapy. All patients in the study were alive during follow-up and the 3-year event-free survival rate (EFS) was 53.7% and 85.7% in the LAC and HAC groups. The most frequent adverse event was Grade 1/2 myelosuppression, which was observed in 38.5% (5/13) and 42.9% (3/7) of the patients receiving the LAC and HAC regimen. CONCLUSIONS A combination of Ara-c, VDS and prednisone was effective and safe for some patients with refractory/relapse MS-RO + LCH. The high-dose Ara-c regimen was associated with a numerically higher EFS rate.
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Affiliation(s)
- Wenqian Wang
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Jian Ge
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Honghao Ma
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Hongyun Lian
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Lei Cui
- Hematologic Disease Laboratory, Beijing Pediatric Research Institute,Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Disease in Children, Beijing Children's Hospital, National Key Discipline of Pediatrics,Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Yunze Zhao
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Zhigang Li
- Hematologic Disease Laboratory, Beijing Pediatric Research Institute,Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Disease in Children, Beijing Children's Hospital, National Key Discipline of Pediatrics,Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Tianyou Wang
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Rui Zhang
- Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Capital Medical University, Ministry of Education, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
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Morimoto A, Shioda Y, Kudo K, Kanegane H, Imamura T, Koh K, Kosaka Y, Yuza Y, Nakazawa A, Saito AM, Watanabe T, Nakazawa Y. Intensification of treatment with vinca alkaloid does not improve outcomes in pediatric patients with Langerhans cell histiocytosis: results from the JPLSG LCH-12 study. Int J Hematol 2023:10.1007/s12185-023-03568-0. [PMID: 36871086 DOI: 10.1007/s12185-023-03568-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 03/06/2023]
Abstract
Chemotherapy with cytarabine, vincristine (VCR), and prednisolone has achieved low mortality rates in pediatric patients with Langerhans cell histiocytosis (LCH). However, relapse rates remain high, making event-free survival (EFS) rates unsatisfactory. A nationwide clinical trial, LCH-12, tested a modified protocol in which the early maintenance phase was intensified with increasing dosages of VCR. Patients newly diagnosed with multifocal bone (MFB) or multisystem (MS) LCH and aged < 20 years at diagnosis were enrolled between June 2012 and November 2017. Of the 150 eligible patients, 43 with MFB were treated for 30 weeks and 107 with MS LCH were treated for 54 weeks. One patient with MS LCH died of sepsis during the induction phase. The 3-year EFS rates among patients with MFB LCH, risk organ (RO)-negative MS LCH, and RO-positive MS LCH were 66.7% (95% confidential interval [CI], 56.5-77.0%), 66.1% (95% CI 52.9-76.4%), and 51.1% (95% CI 35.8-64.5%), respectively, similar to previously observed rates. EFS rates were significantly lower in patients with disease activity scores > 6 than in those with scores ≤ 6. The strategy that included more intense treatment with VCR was not effective. Other strategies are required to improve outcomes in patients with pediatric LCH.
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Affiliation(s)
- Akira Morimoto
- Department of Pediatrics, Jichi Medical University School of Medicine, Shimotsuke, Japan. .,Department of Pediatrics, Showa Inan General Hospital, 3230, Akaho, Komagane, Nagano, 399-4117, Japan.
| | - Yoko Shioda
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Kazuko Kudo
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hirokazu Kanegane
- Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Katsuyoshi Koh
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Yoshiyuki Kosaka
- Department of Hematology/Oncology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Yuki Yuza
- Departments of Hematology/Oncology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Atsuko Nakazawa
- Department of Clinical Research, Saitama Children's Medical Center, Saitama, Japan
| | - Akiko M Saito
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Tomoyuki Watanabe
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, Nisshin, Japan
| | - Yozo Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
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