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Larrosa C, Mora J, Cheung NK. Global Impact of Monoclonal Antibodies (mAbs) in Children: A Focus on Anti-GD2. Cancers (Basel) 2023; 15:3729. [PMID: 37509390 PMCID: PMC10378537 DOI: 10.3390/cancers15143729] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Monoclonal antibodies (mAbs), as the name implies, are clonal antibodies that bind to the same antigen. mAbs are broadly used as diagnostic or therapeutic tools for neoplasms, autoimmune diseases, allergic conditions, and infections. Although most mAbs are approved for treating adult cancers, few are applicable to childhood malignancies, limited mostly to hematological cancers. As for solid tumors, only anti-disialoganglioside (GD2) mAbs are approved specifically for neuroblastoma. Inequities of drug access have continued, affecting most therapeutic mAbs globally. To understand these challenges, a deeper dive into the complex transition from basic research to the clinic, or between marketing and regulatory agencies, is timely. This review focuses on current mAbs approved or under investigation in pediatric cancer, with special attention on solid tumors and anti-GD2 mAbs, and the hurdles that limit their broad global access. Beyond understanding the mechanisms of drug resistance, the continual discovery of next generation drugs safer for children and easier to administer, the discovery of predictive biomarkers to avoid futility should ease the acceptance by patient, health care professionals and regulatory agencies, in order to expand clinical utility. With a better integration into the multimodal treatment for each disease, protocols that align with the regional clinical practice should also improve acceptance and cost-effectiveness. Communication and collaboration between academic institutions, pharmaceutical companies, and regulatory agencies should help to ensure accessible, affordable, and sustainable health care for all.
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Affiliation(s)
- Cristina Larrosa
- Pediatric Cancer Center Barcelona, 08950 Barcelona, Spain; (C.L.); (J.M.)
| | - Jaume Mora
- Pediatric Cancer Center Barcelona, 08950 Barcelona, Spain; (C.L.); (J.M.)
| | - Nai-Kong Cheung
- Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA
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Olgun N, Cecen E, Ince D, Kizmazoglu D, Baysal B, Onal A, Ozdogan O, Guleryuz H, Cetingoz R, Demiral A, Olguner M, Celik A, Kamer S, Ozer E, Altun Z, Aktas S. Dinutuximab beta plus conventional chemotherapy for relapsed/refractory high-risk neuroblastoma: A single-center experience. Front Oncol 2022; 12:1041443. [PMID: 36620564 PMCID: PMC9816792 DOI: 10.3389/fonc.2022.1041443] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
Background Relapsed/refractory high-risk neuroblastoma has a dismal prognosis. Anti-GD2-mediated chemo-immunotherapy has a notable anti-tumor activity in patients with relapsed/refractory high-risk neuroblastoma. The purpose of this study was to analyze the efficacy and safety of the combination of immunotherapy with dinutuximab beta (DB) and chemotherapy in patients with relapsed/refractory high-risk neuroblastoma. Methods All patients received the Turkish Pediatric Oncology Group NB 2009 national protocol for HR-NB treatment at the time of diagnosis. Salvage treatments were administered after progression or relapse. The patients who could not achieve remission in primary or metastatic sites were included in the study. The most common chemotherapy scheme was irinotecan and temozolomide. DB was administered intravenously for 10 days through continuous infusion with 10 mg/m2 per day. The patients received 2 to 14 successive cycles with duration of 28 days each. Disease assessment was performed after cycles 2, 4, and 6 and every 2 to 3 cycles thereafter. Results Between January 2020 and March 2022, nineteen patients received a total of 125 cycles of DB and chemotherapy. Objective responses were achieved in 12/19 (63%) patients, including complete remission in 6/19 and partial response in 6/19. Stable disease was observed in two patients. The remaining five patients developed bone/bone marrow and soft tissue progression after 2-4 cycles of treatment. The most common Grade ≥3 toxicities were leukopenia, thrombocytopenia, hypertransaminasemia, fever, rash/itching and capillary leak syndrome, respectively. Conclusion Our study results suggest that DB-based chemo-immunotherapy seems to be suitable with encouraging response rates in patients with relapsed/refractory high-risk neuroblastoma.
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Affiliation(s)
- Nur Olgun
- Department of Pediatric Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye,*Correspondence: Nur Olgun,
| | - Emre Cecen
- Department of Pediatric Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
| | - Dilek Ince
- Department of Pediatric Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
| | - Deniz Kizmazoglu
- Department of Pediatric Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
| | - Birsen Baysal
- Department of Pediatric Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
| | - Ayse Onal
- Department of Pediatric Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
| | - Ozhan Ozdogan
- Department of Nuclear Medicine, Dokuz Eylul University School of Medicine, Izmir, Türkiye
| | - Handan Guleryuz
- Department of Radiology, Dokuz Eylul University School of Medicine, Izmir, Türkiye
| | - Riza Cetingoz
- Department of Radiation Oncology, Dokuz Eylul University School of Medicine, Izmir, Türkiye
| | - Ayse Demiral
- Department of Radiation Oncology, Dokuz Eylul University School of Medicine, Izmir, Türkiye
| | - Mustafa Olguner
- Department of Pediatric Surgery, Dokuz Eylul University School of Medicine, Izmir, Türkiye
| | - Ahmet Celik
- Department of Pediatric Surgery, Ege University School of Medicine, Izmir, Türkiye
| | - Serra Kamer
- Department of Radiation Oncology, Ege University School of Medicine, Izmir, Türkiye
| | - Erdener Ozer
- Department of Pathology, Dokuz Eylul University School of Medicine, Izmir, Türkiye
| | - Zekiye Altun
- Department of Basic Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
| | - Safiye Aktas
- Department of Basic Oncology, Dokuz Eylul University Institute of Oncology, Izmir, Türkiye
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Tas ML, Dootjes LW, Fiocco M, de Krijger RR, Dierselhuis MP, van Eijkelenburg NKA, van Grotel M, Kraal KCJM, Peek AML, Tytgat GAM, van Noesel MM. Anti-GD2 Based Immunotherapy Prevents Late Events in High-Risk Neuroblastoma Patients over 18 Months at Diagnosis. Cancers (Basel) 2021; 13:4941. [PMID: 34638426 DOI: 10.3390/cancers13194941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/19/2021] [Accepted: 09/28/2021] [Indexed: 01/04/2023] Open
Abstract
Simple Summary High-risk neuroblastoma accounts for 4% of newly diagnosed pediatric malignancies, but for 9–10% of pediatric cancer mortality. To reduce the number of (late) recurrences and subsequently improve survival, anti-GD2 monoclonal antibody based immunotherapy has been added to the maintenance phase of treatment. The first randomized study (ANBL0032) was ground breaking, showing a 20% improved event free survival. Subsequently immunotherapy was included in all international high-risk treatment regimens. Randomization will never be repeated. In this article we present additional data from our retrospective cohort to corroborate the ANBL0032 study. Our cohort contains 84 Dutch high-risk neuroblastoma patients. They were treated with GPOH or POG induction, followed by immunotherapy according to original ANBL0032 protocol (immunotherapy group) or single-agent isotretinoin (historical control group). In the complete cohort, 5 year OS was 64 ± 7% and 49 ± 8% for the immunotherapy group and the control group, respectively (p = 0.16). Five year EFS was 57 ± 7% and 41 ± 8%, respectively (p = 0.16). In the subgroup of patients ≥ 18 months, 5-yr OS was 63 ± 8% and 39 ± 9, respectively (p = 0.04) and EFS 54 ± 8% and 29 ± 8%, respectively (p = 0.05). Our five year data suggest a role for the immunotherapy in preventing late events, especially in patients ≥ 18 months old. Abstract Background: Anti-GD2 based immunotherapy has improved overall (OS) and event free survival (EFS) for high-risk neuroblastoma (HR-NBL) patients. Here, we evaluate the long-term efficacy of anti-GD2 immunotherapy in combination with isotretinoin, GM-CSF, and IL-2. Methods: Dutch HR-NBL patients treated with immunotherapy according to the COG-ANBL0032 protocol (n = 47) were included and compared to historical controls (n = 37) treated with single-agent isotretinoin maintenance therapy. Survival time was calculated from start of the maintenance therapy. Results: The study and control group were similar concerning baseline characteristics. In the complete cohort, 5 year OS was 64 ± 7% and 49 ± 8% for the immunotherapy group and the control group, respectively (p = 0.16). Five year EFS was 57 ± 7% and 41 ± 8%, respectively (p = 0.16). In the subgroup of patients ≥ 18 months, 5-yr OS was 63 ± 8% and 39 ± 9, respectively (p = 0.04) and EFS 54 ± 8% and 29 ± 8%, respectively (p = 0.05). Landmark analysis for EFS with landmark point at 6 months after start of maintenance suggests a larger effect on the prevention of late than early events. Conclusions: This study is the first to confirm the results of the COG-ANBL0032 study in a cohort treated with a different induction regimen. Anti-GD2 immunotherapy prevents late events, most significantly in patients older than 18 months of age at diagnosis.
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Goldberg JL, Navid F, Hank JA, Erbe AK, Santana V, Gan J, de Bie F, Javaid AM, Hoefges A, Merdler M, Carmichael L, Kim K, Bishop MW, Meager MM, Gillies SD, Pandey JP, Sondel PM. Pre-existing antitherapeutic antibodies against the Fc region of the hu14.18K322A mAb are associated with outcome in patients with relapsed neuroblastoma. J Immunother Cancer 2021; 8:jitc-2020-000590. [PMID: 32169872 PMCID: PMC7069273 DOI: 10.1136/jitc-2020-000590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2020] [Indexed: 12/19/2022] Open
Abstract
Purpose Patients with cancer receiving tumor-reactive humanized monoclonal antibody (mAb) therapy can develop a human antihuman antibody (HAHA) response against the therapeutic mAb. We evaluated for HAHA in patients with neuroblastoma treated in a phase I study of humanized anti-GD2 mAb (immunoglobulin (Ig)G1 isotype), hu14.18K322A (NCT00743496). The pretreatment sera (collected prior to mAb treatment) from 9 of 38 patients contained antitherapeutic antibodies, even though they had no prior mAb exposure. We sought to characterize these pre-existing antitherapeutic antibodies (PATA). Experimental design The PATA+ pretreatment samples were characterized via ELISA; clinical associations with PATA status were evaluated. Results Pretreatment sera from eight of nine PATA+ patients also bound rituximab and demonstrated preferential ELISA reactivity against the Fc portions of hu14.18K322A and rituximab as compared with the Fab portions of these mAbs. These PATA+ sera also recognized dinutuximab (human IgG1 isotype) and mouse IgG2a isotype mAbs, but not a mouse IgG1 isotype or the fully human panitumumab (IgG2 isotype) mAb. Of the 38 treated patients, only 4 patients (all in the PATA+ cohort) demonstrated no disease progression for >2.5 years without receiving further therapy (p=0.002). Conclusions This study demonstrates an association between clinical outcome and the presence of PATA against determinant(s) on the Fc component of the therapeutic mAb, suggesting that the PATA may be playing a role in augmenting mAb-based antitumor effects. Further analyses for the presence of PATA in a larger cohort of patients with relapsed neuroblastoma, analyses of their clinical correlates, identification of their immunological targets, and potential antitumor mechanisms are warranted.
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Affiliation(s)
- Jacob L Goldberg
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Fariba Navid
- Department of Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Jacqueline A Hank
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Amy K Erbe
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Victor Santana
- Departments of Oncology and Pediatrics, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Jacek Gan
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Fenna de Bie
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Amal M Javaid
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Anna Hoefges
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Michael Merdler
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA
| | - Lakeesha Carmichael
- Department of Biostatistics and Informatics, University of Wisconsin, Madison, Wisconsin, USA
| | - KyungMann Kim
- Department of Biostatistics and Informatics, University of Wisconsin, Madison, Wisconsin, USA
| | - Michael W Bishop
- Departments of Oncology and Pediatrics, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Michael M Meager
- Department of Therapeutics Production and Quality, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | | | - Janardan P Pandey
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Paul M Sondel
- Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, USA .,Departments of Pediatrics and Genetics, University of Wisconsin, Madison, Wisconsin, USA
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Achbergerová M, Hederová S, Mikesková M, Husáková K, Hrašková A, Kolenová A. Implementation of immunotherapy into the treatment of neuroblastoma - single center experience with the administration of dinutuximab and management of its adverse effects. Klin Onkol 2021; 33:372-378. [PMID: 33108882 DOI: 10.14735/amko2020372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Neuroblastoma is the most common extracranial solid tumour of childhood with extremely heterogeneous bio-logical and clinical behaviour. Despite advances in its treatment, the long-term prognosis of patients with a high-risk and relapsed neuroblastoma remains poor. The implementation of immunotherapy into the treatment protocols has the potential to improve it. Dinutuximab, a chimeric monoclonal antibody, leads to the apoptosis of tumour cells through binding to the GD2 receptor. The article aim is to present the first experience of our centre with dinutuximab treatment. PATIENTS AND METHODS In 2018-2019, we administered 31 cycles of dinutuximab to seven patients. Five patients with high-risk neuroblastoma received dinutuximab in the first line, in two patients with relapse, dinutuximab was administered in the second line of treatment. To evaluate the toxicity of the treatment, the nursing records of patients during immunotherapy were retrospectively analysed. RESULTS Two patients treated with dinutuximab in the first line are in complete remission, three patients achieved a partial response. Both patients with relapsed neuroblastoma were dia-gnosed with a second relapse after immunotherapy and died of disease progression. The treatment tolerance was acceptable in most patients - in six patients adverse events were managed with adequate supportive care. These were mainly symptoms of capillary leak syndrome, pain and hypersensitivity reactions. In one patient, the treatment was discontinued due to severe neurotoxicity. CONCLUSION Dinutuximab has a proven benefit in the eradication of the minimal residual disease in the treatment of neuroblastoma. Immunotherapy is currently the standard for first-line treatment of high-risk neuroblastoma. Its role in the treatment of relapsed neuroblastoma is a subject of several ongoing studies as well as the optimization of therapeutic regimens. Dinutuximab administration is associated with a considerable risk of severe adverse reactions, so the treatment belongs to the hands of an experienced paediatric oncology centre.
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Abstract
Monoclonal antibodies (mAbs) are part of the standard of care for the treatment of many adult solid tumors. Until recently none have been approved for use in children with solid tumors. Neuroblastoma (NB) is the most common extracranial solid tumor in children. Those with high-risk disease, despite treatment with very intensive multimodal therapy, still have poor overall survival. Results of treatment with an immunotherapy regimen using a chimeric (human/mouse) mAb against a cell surface disialoganglioside (GD2) have changed the standard of care for these children and resulted in the first approval of a mAb for use in children with solid tumors. This article will review the use of the various anti-GD2 mAbs in children with NB, methods that have been or are being evaluated for enhancing their efficacy, as well as review other promising antigenic targets for the therapeutic use of mAbs in children with NB.
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Affiliation(s)
- Wayne L Furman
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
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Szanto CL, Cornel AM, Tamminga SM, Delemarre EM, de Koning CCH, van den Beemt DAMH, Dunnebach E, Tas ML, Dierselhuis MP, Tytgat LGAM, van Noesel MM, Kraal KCJM, Boelens JJ, Huitema ADR, Nierkens S. Immune Monitoring during Therapy Reveals Activitory and Regulatory Immune Responses in High-Risk Neuroblastoma. Cancers (Basel) 2021; 13:2096. [PMID: 33926057 DOI: 10.3390/cancers13092096] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Neuroblastoma is a type of childhood cancer accounting for approximately 15% of childhood cancer deaths. Despite intensive treatment, including immunotherapy, prognosis of high-risk neuroblastoma is poor. Increasing amounts of research show that the fighting capacity of the immune system is very important for the outcome of neuroblastoma patients. Therefore, we investigated the fighting capacity of immune cells in blood at diagnosis and during the different phases of therapy. In this study, we observed both processes that stimulate and processes that decrease fighting capacity of immune cells in neuroblastoma patients during therapy. Despite this, we show that overall fighting capacity of the immune system of neuroblastoma patients is impaired at diagnosis as well as during therapy. In addition, we observed a lot of variation between patients, which might explain differences in therapy efficacy between patients. This study provides insight for improvement of therapy timing as well as new therapy strategies enhancing immune cell fighting capacity. Abstract Despite intensive treatment, including consolidation immunotherapy (IT), prognosis of high-risk neuroblastoma (HR-NBL) is poor. Immune status of patients over the course of treatment, and thus immunological features potentially explaining therapy efficacy, are largely unknown. In this study, the dynamics of immune cell subsets and their function were explored in 25 HR-NBL patients at diagnosis, during induction chemotherapy, before high-dose chemotherapy, and during IT. The dynamics of immune cells varied largely between patients. IL-2- and GM-CSF-containing IT cycles resulted in significant expansion of effector cells (NK-cells in IL-2 cycles, neutrophils and monocytes in GM-CSF cycles). Nonetheless, the cytotoxic phenotype of NK-cells was majorly disturbed at the start of IT, and both IL-2 and GM-CSF IT cycles induced preferential expansion of suppressive regulatory T-cells. Interestingly, proliferative capacity of purified patient T-cells was impaired at diagnosis as well as during therapy. This study indicates the presence of both immune-enhancing as well as regulatory responses in HR-NBL patients during (immuno)therapy. Especially the double-edged effects observed in IL-2-containing IT cycles are interesting, as this potentially explains the absence of clinical benefit of IL-2 addition to IT cycles. This suggests that there is a need to combine anti-GD2 with more specific immune-enhancing strategies to improve IT outcome in HR-NBL.
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Szanto CL, Cornel AM, Vijver SV, Nierkens S. Monitoring Immune Responses in Neuroblastoma Patients during Therapy. Cancers (Basel) 2020; 12:E519. [PMID: 32102342 DOI: 10.3390/cancers12020519] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/14/2020] [Accepted: 02/18/2020] [Indexed: 12/11/2022] Open
Abstract
Neuroblastoma (NBL) is the most common extracranial solid tumor in childhood. Despite intense treatment, children with this high-risk disease have a poor prognosis. Immunotherapy showed a significant improvement in event-free survival in high-risk NBL patients receiving chimeric anti-GD2 in combination with cytokines and isotretinoin after myeloablative consolidation therapy. However, response to immunotherapy varies widely, and often therapy is stopped due to severe toxicities. Objective markers that help to predict which patients will respond or develop toxicity to a certain treatment are lacking. Immunotherapy guided via immune monitoring protocols will help to identify responders as early as possible, to decipher the immune response at play, and to adjust or develop new treatment strategies. In this review, we summarize recent studies investigating frequency and phenotype of immune cells in NBL patients prior and during current treatment protocols and highlight how these findings are related to clinical outcome. In addition, we discuss potential targets to improve immunogenicity and strategies that may help to improve therapy efficacy. We conclude that immune monitoring during therapy of NBL patients is essential to identify predictive biomarkers to guide patients towards effective treatment, with limited toxicities and optimal quality of life.
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Ceylan K, Jahns LJ, Lode BN, Ehlert K, Kietz S, Troschke-Meurer S, Siebert N, Lode HN. Inflammatory response and treatment tolerance of long-term infusion of the anti-GD 2 antibody ch14.18/CHO in combination with interleukin-2 in patients with high-risk neuroblastoma. Pediatr Blood Cancer 2018; 65:e26967. [PMID: 29350486 DOI: 10.1002/pbc.26967] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/18/2017] [Accepted: 12/19/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND The monoclonal anti-GD2 antibody ch14.18/CHO in combination with IL-2 is active and effective in high-risk neuroblastoma (NB) patients. Here, we investigated the inflammatory response and treatment tolerance of long-term infusion (LTI) of ch14.18/CHO (10 × 10 mg/m2 ; 24 hr) in combination with subcutaneous (s.c.) IL-2 in a single center program. METHODS Fifty-three NB patients received up to six cycles of 100 mg/m2 ch14.18/CHO (d8-18, where d represents day(s)) as LTI combined with 6 × 106 IU/m2 s.c. IL-2 (d1-5; 8-12) and 160 mg/m2 oral 13-cis retinoic acid (RA) (d19-32). Side effects of ch14.18/CHO and IL-2 treatment require hospitalization of patients on d8. Treatment tolerance was evaluated daily with clinical parameters (body temperature, vital signs, Lansky performance status, requirement of i.v. concomitant medication) to define an outpatient candidate status. sIL-2-R and C-reactive protein values were determined to assess the inflammatory response. RESULTS LTI of ch14.18/CHO (d8-18) in combination with s.c.IL-2 (d8-12) showed an acceptable treatment tolerance that allowed all patients to receive part of the treatment as an outpatient (median time point of discharge: d15 for all cycles). The treatment tolerance improved from cycle to cycle and the time to become an outpatient candidate decreased from d15 to d13 in subsequent cycles. Clinical and laboratory parameters indicate a maximum inflammatory response at d11 of each cycle. Interestingly, the soluble IL-2 receptor remained increased at baseline of the next cycle indicating immune activation over the entire treatment period of 6 months. CONCLUSIONS LTI of ch14.18/CHO combined with s.c.IL-2 shows an improved tolerance in subsequent cycles allowing outpatient treatment.
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Affiliation(s)
- Kiraz Ceylan
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
| | - Luciana J Jahns
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
| | - Bjoern N Lode
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
| | - Karoline Ehlert
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
| | - Silke Kietz
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
| | | | - Nikolai Siebert
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
| | - Holger N Lode
- Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
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Baiu DC, Artz NS, McElreath MR, Menapace BD, Hernando D, Reeder SB, Grüttner C, Otto M. High specificity targeting and detection of human neuroblastoma using multifunctional anti-GD2 iron-oxide nanoparticles. Nanomedicine (Lond) 2015; 10:2973-2988. [PMID: 26420448 DOI: 10.2217/nnm.15.138] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
AIM To develop biocompatible, tumor-specific multifunctional iron-oxide nanoconstructs targeting neuroblastoma, an aggressive pediatric malignancy. MATERIALS & METHODS Clinical-grade humanized monoclonal antibody (hu14.18K322A), designed to target GD2 antigen on neuroblastoma with reduced nonspecific immune interactions, was conjugated to hydroxyethyl starch-coated iron-oxide nanoparticles. Targeting capability in vitro and in vivo was assessed by immunofluorescence, electron microscopy, analytical spectrophotometry, histochemistry and magnetic resonance R2* relaxometry. RESULTS The biocompatible nanoconstructs demonstrated high tumor specificity in vitro and in vivo, and low background uptake in a mouse flank xenograft model. Specific accumulation in tumors enabled particle visualization and quantification by magnetic resonance R2* mapping. CONCLUSION Our findings support the further development toward clinical application of this anti-GD2 iron-oxide nanoconstruct as diagnostic and therapeutic scaffold for neuroblastoma and potentially other GD2-positive malignancies.
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Affiliation(s)
- Dana C Baiu
- Department of Pediatrics, Division of Pediatric Hematology, Oncology & Bone Marrow Transplant, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Nathan S Artz
- Department of Radiology, Medical Physics, Biomedical Engineering, Medicine & Emergency Medicine, School of Medicine & Public Health, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Meghan R McElreath
- Department of Pediatrics, Division of Pediatric Hematology, Oncology & Bone Marrow Transplant, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Bryan D Menapace
- Department of Pediatrics, Division of Pediatric Hematology, Oncology & Bone Marrow Transplant, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Diego Hernando
- Department of Radiology, Medical Physics, Biomedical Engineering, Medicine & Emergency Medicine, School of Medicine & Public Health, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Scott B Reeder
- Department of Radiology, Medical Physics, Biomedical Engineering, Medicine & Emergency Medicine, School of Medicine & Public Health, University of Wisconsin-Madison, Madison, WI 53706, USA
| | | | - Mario Otto
- Department of Pediatrics, Division of Pediatric Hematology, Oncology & Bone Marrow Transplant, University of Wisconsin-Madison, Madison, WI 53706, USA
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