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Mak DY, Siddiqui Z, Liu ZA, Dama H, MacDonald SM, Wu S, Murphy ES, Hall MD, Malkov V, Onar-Thomas A, Ahmed S, Dhall G, Tsang DS. Photon versus proton whole ventricular radiotherapy for non-germinomatous germ cell tumors: A report from the Children's Oncology Group. Pediatr Blood Cancer 2022; 69:e29697. [PMID: 35373903 PMCID: PMC9329212 DOI: 10.1002/pbc.29697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/08/2022] [Accepted: 03/15/2022] [Indexed: 11/07/2022]
Abstract
PURPOSE To determine if proton therapy reduces doses to cranial organs at risk (OARs) as compared to photon therapy in children with non-germinomatous germ cell tumors (NGGCT) receiving whole ventricular radiotherapy (WVRT). METHODS AND MATERIALS Dosimetric data for patients with NGGCT prospectively enrolled in stratum 1 of the Children's Oncology Group study ACNS1123 who received 30.6 Gy WVRT were compared. Target segmentation was standardized using a contouring atlas. Doses to cranial OARs were compared between proton and photon treatments. Clinically relevant dose-volume parameters that were analyzed included mean dose and dose to 40% of the OAR volume (D40). RESULTS Mean and D40 doses to the supratentorial brain, cerebellum, and bilateral temporal, parietal, and frontal lobes were statistically significantly lower amongst proton-treated patients, as compared to photon-treated patients. In a subgroup analysis of patients uniformly treated with a 3-mm planning target volume, patients who received proton therapy continued to have statistically significantly lower doses to brain OARs. CONCLUSIONS Children treated with proton therapy for WVRT had lower doses to normal brain structures, when compared to those treated with photon therapy. Proton therapy should be considered for patients receiving WVRT for NGGCT.
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Affiliation(s)
- David Y. Mak
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario
| | - Zain Siddiqui
- Division of Radiation Oncology, Cancer Center of Southeastern Ontario, Kingston, Ontario
| | - Zhihui Amy Liu
- Department of Biostatistics, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario
| | - Hitesh Dama
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario
| | - Shannon M. MacDonald
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Shengjie Wu
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Erin S. Murphy
- Department of Radiation Oncology, Cleveland Clinic Taussig Cancer Center, Cleveland, Ohio
| | - Matthew D. Hall
- Department of Radiation Oncology, Miami Cancer Institute, Baptist Health South Florida, Miami, Florida
| | - Victor Malkov
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario
| | - Arzu Onar-Thomas
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Sameera Ahmed
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario
| | - Girish Dhall
- Division of Hematology, Oncology and Blood & Marrow Transplantation, Children's of Alabama, University of Alabama at Birmingham, Birmingham, Alabama
| | - Derek S. Tsang
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario
- Division of Haematology/Oncology, Hospital for Sick Children, Toronto, Ontario
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Pediatric Central Nervous System Germinoma: What Can We Understand From a Worldwide Effort to Maximize Cure and Minimize Risk? Int J Radiat Oncol Biol Phys 2020; 107:227-231. [DOI: 10.1016/j.ijrobp.2020.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/28/2020] [Indexed: 11/20/2022]
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Yan M, Laperriere N, Bartels U, Bouffet E, Tsang DS. In Reply to Byun et al. Int J Radiat Oncol Biol Phys 2020; 106:219-220. [DOI: 10.1016/j.ijrobp.2019.09.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 10/25/2022]
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Byun HK, Yoon HI, Suh CO. In Regard to Yan et al. Int J Radiat Oncol Biol Phys 2020; 106:218-219. [DOI: 10.1016/j.ijrobp.2019.09.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 09/09/2019] [Accepted: 09/27/2019] [Indexed: 11/16/2022]
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