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Wienke J, Dierselhuis MP, Tytgat GAM, Künkele A, Nierkens S, Molenaar JJ. The immune landscape of neuroblastoma: Challenges and opportunities for novel therapeutic strategies in pediatric oncology. Eur J Cancer 2020; 144:123-150. [PMID: 33341446 DOI: 10.1016/j.ejca.2020.11.014] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022]
Abstract
Immunotherapy holds great promise for the treatment of pediatric cancers. In neuroblastoma, the recent implementation of anti-GD2 antibody Dinutuximab into the standard of care has improved patient outcomes substantially. However, 5-year survival rates are still below 50% in patients with high-risk neuroblastoma, which has sparked investigations into novel immunotherapeutic approaches. T cell-engaging therapies such as immune checkpoint blockade, antibody-mediated therapy and adoptive T cell therapy have proven remarkably successful in a range of adult cancers but still meet challenges in pediatric oncology. In neuroblastoma, their limited success may be due to several factors. Neuroblastoma displays low immunogenicity due to its low mutational load and lack of MHC-I expression. Tumour infiltration by T and NK cells is especially low in high-risk neuroblastoma and is prognostic for survival. Only a small fraction of tumour-infiltrating lymphocytes shows tumour reactivity. Moreover, neuroblastoma tumours employ a variety of immune evasion strategies, including expression of immune checkpoint molecules, induction of immunosuppressive myeloid and stromal cells, as well as secretion of immunoregulatory mediators, which reduce infiltration and reactivity of immune cells. Overcoming these challenges will be key to the successful implementation of novel immunotherapeutic interventions. Combining different immunotherapies, as well as personalised strategies, may be promising approaches. We will discuss the composition, function and prognostic value of tumour-infiltrating lymphocytes (TIL) in neuroblastoma, reflect on challenges for immunotherapy, including a lack of TIL reactivity and tumour immune evasion strategies, and highlight opportunities for immunotherapy and future perspectives with regard to state-of-the-art developments in the tumour immunology space.
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Affiliation(s)
- Judith Wienke
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands.
| | | | | | - Annette Künkele
- Department of Pediatric Oncology and Hematology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt - Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Stefan Nierkens
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
| | - Jan J Molenaar
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
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Terry RL, Meyran D, Ziegler DS, Haber M, Ekert PG, Trapani JA, Neeson PJ. Immune profiling of pediatric solid tumors. J Clin Invest 2020; 130:3391-3402. [PMID: 32538896 PMCID: PMC7324195 DOI: 10.1172/jci137181] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Pediatric cancers, particularly high-risk solid tumors, urgently need effective and specific therapies. Their outlook has not appreciably improved in decades. Immunotherapies such as immune checkpoint inhibitors offer much promise, but most are only approved for use in adults. Though several hundred clinical trials have tested immune-based approaches in childhood cancers, few have been guided by biomarkers or clinical-grade assays developed to predict patient response and, ultimately, to help select those most likely to benefit. There is extensive evidence in adults to show that immune profiling has substantial predictive value, but few studies focus on childhood tumors, because of the relatively small disease population and restricted use of immune-based therapies. For instance, only one published study has retrospectively examined the immune profiles of pediatric brain tumors after immunotherapy. Furthermore, application and integration of advanced multiplex techniques has been extremely limited. Here, we review the current status of immune profiling of pediatric solid tumors, with emphasis on tumor types that represent enormous unmet clinical need, primarily in the context of immune checkpoint inhibitor therapy. Translating optimized and informative immune profiling into standard practice and access to personalized combination therapy will be critical if childhood cancers are to be treated effectively and affordably.
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Affiliation(s)
- Rachael L. Terry
- Children’s Cancer Institute, Randwick, New South Wales, Australia
| | - Deborah Meyran
- Cancer Immunology Program, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Université de Paris, Inserm, U976 HIPI Unit, Institut de Recherche Saint-Louis, Paris, France
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - David S. Ziegler
- Children’s Cancer Institute, Randwick, New South Wales, Australia
- Kids Cancer Center, Sydney Children’s Hospital, Randwick, New South Wales, Australia
| | - Michelle Haber
- Children’s Cancer Institute, Randwick, New South Wales, Australia
| | - Paul G. Ekert
- Children’s Cancer Institute, Randwick, New South Wales, Australia
- Cancer Immunology Program, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
| | - Joseph A. Trapani
- Cancer Immunology Program, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Paul J. Neeson
- Cancer Immunology Program, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
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