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Berthet C, Lucia F, Bourbonne V, Schick U, Lecouillard I, Le Deroff C, Barateau A, de Crevoisier R, Castelli J. The dosimetric parameters impact on local recurrence in stereotactic radiotherapy for brain metastases. Br J Radiol 2024; 97:820-827. [PMID: 38377402 PMCID: PMC11025672 DOI: 10.1093/bjr/tqae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 11/15/2023] [Accepted: 01/30/2024] [Indexed: 02/22/2024] Open
Abstract
OBJECTIVES Stereotactic radiotherapy (SRT) for brain metastases (BM) allows very good local control (LC). However, approximately 20%-30% of these lesions will recur. The objective of this retrospective study was to evaluate the impact of dosimetric parameters on LC in cerebral SRT. METHODS Patients treated with SRT for 1-3 BM between January 2015 and December 2018 were retrospectively included. A total of 349 patients with 538 lesions were included. The median gross tumour volume (GTV) was 2 cm3 (IQR, 0-7). The median biological effective dose with α/β = 10 (BED10) was 60 Gy (IQR, 32-82). The median prescription isodose was 71% (IQR, 70-80). Correlations with LC were examined using the Cox regression model. RESULTS The median follow-up period was 55 months (min-max, 7-85). Median overall survival was 17.8 months (IQR, 15.2-21.9). There were 95 recurrences and LC at 1 and 2 years was 87.1% (95% CI, 84-90) and 78.1% (95% CI, 73.9-82.4), respectively. Univariate analysis showed that systemic treatment, dose to 2% and 50% of the planning target volume (PTV), BED10 > 50 Gy, and low PTV and GTV volume were significantly correlated with better LC. In the multivariate analysis, GTV volume, isodose, and BED10 were significantly associated with LC. CONCLUSION These results show the importance of a BED10 > 50 Gy associated with a prescription isodose <80% to optimize LC during SRT for BM. ADVANCES IN KNOWLEDGE Isodose, BED, and GTV volume were significantly associated with LC. A low isodose improves LC without increasing the risk of radionecrosis.
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Affiliation(s)
- Camille Berthet
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
| | - François Lucia
- Radiation Oncology Department, University Hospital, Brest, 29200, France
| | - Vincent Bourbonne
- Radiation Oncology Department, University Hospital, Brest, 29200, France
| | - Ulrike Schick
- Radiation Oncology Department, University Hospital, Brest, 29200, France
| | | | - Coralie Le Deroff
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
| | - Anais Barateau
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
- Univ Rennes, CLCC Eugène Marquis, Inserm, LTSI – UMR 1099, Rennes, 35000, France
| | - Renaud de Crevoisier
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
- Univ Rennes, CLCC Eugène Marquis, Inserm, LTSI – UMR 1099, Rennes, 35000, France
| | - Joel Castelli
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
- Univ Rennes, CLCC Eugène Marquis, Inserm, LTSI – UMR 1099, Rennes, 35000, France
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Shah SN, Kaki P, Shah SS, Shah SA. A Pilot Study of Hypofractionated Radiosurgery for Trigeminal Neuralgia. Cureus 2024; 16:e53061. [PMID: 38410286 PMCID: PMC10896271 DOI: 10.7759/cureus.53061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/27/2024] [Indexed: 02/28/2024] Open
Abstract
The primary late toxicity of radiosurgery treatment for trigeminal neuralgia (TN) is facial numbness due to trigeminal nerve dysfunction. Although most patients prefer loss of facial sensation to TN, severe loss of facial sensation can be debilitating. In order to try to obtain high pain control rates while minimizing the risk of late facial numbness, we elected to treat patients on the distal trigeminal nerve with a three-fraction regimen over consecutive days instead of one fraction. Our goal was to relieve the pain while also allowing the trigeminal nerve time to repair radiation damage between treatments in an attempt to minimize the risk of permanent facial numbness. Patients in a pilot study, approved by an Institutional Review Board (IRB), received a treatment regimen of 99 Gy, administered in three consecutive daily fractions of 33 Gy each, with the dosage targeted to the 80% line. This dose was selected to approximate a biologically equivalent dose of 80 Gy maximal dose to the trigeminal nerve. Forty-eight patients were treated with CyberKnife Radiosurgery (CKRS; 99 Gy/3 fractions) for TN from 2016 to 2022, with at least one year of follow-up. The Barrow Neurological Institute (BNI) scale was used to assess facial pain, and Kaplan-Meier analysis was used to assess adequate pain relief. Thirty-eight (84%) patients experienced adequate pain relief, defined as a BNI score of I-IIIb, after a median of 1.5 months following CKRS. Treatment failure (BNI=IV-V) occurred in 12 (25%) patients after a median of 6 months following initial pain relief. The actuarial probability of pain relief at 6, 12, and 24 months post-CKRS were 87.4%, 83.7%, and 83.7%, respectively. Facial numbness was experienced in 24 (50%) cases after a median of 10 months following CKRS. Typical facial pain (p=0.034) and vascular compression (p=0.039) were the only predictors of better treatment outcomes using univariate Cox survival analysis, and vascular compression (p= 0.037) was the only predictor in multivariate Cox survival analysis. Hypofractionated treatment to the distal trigeminal nerve segment does not appear to offer an advantage in treating TN, due to similar rates of pain relief but with an unacceptably high rate of late facial numbness.
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Affiliation(s)
- Sophia N Shah
- Radiation Oncology, Christiana Care Health System, Newark, USA
| | - Praneet Kaki
- Radiation Oncology, Christiana Care Health System, Newark, USA
| | - Sohan S Shah
- Radiation Oncology, Christiana Care Health System, Newark, USA
| | - Sunjay A Shah
- Radiation Oncology, Christiana Care Health System, Newark, USA
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Spaniol M, Abo-Madyan Y, Ruder AM, Fleckenstein J, Giordano FA, Stieler F. Homogenous dose prescription in Gamma Knife Radiotherapy: Combining the best of both worlds. Phys Med 2024; 117:103202. [PMID: 38159546 DOI: 10.1016/j.ejmp.2023.103202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 09/28/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024] Open
Abstract
PURPOSE Stereotactic radiosurgery with linear accelerators (LINACs) or Leksell Gamma Knife® (LGK, Elekta AB) is an established treatment option for intracranial tumors. When those are involving/abutting organs at risk (OAR), homogenous and normofractionated treatments outmatch single fraction deliveries. In such situations, it would be desirable to balance LINAC's homogeneity benefits with LGK's dose gradient attributes. In this study, we determined homogeneity and OAR sparing ranges using a non-clinical, homogenous prototype version of LGK Lightning. METHODS We retrospectively analyzed thirty fractionated LGK Icon in-house patients with acoustic neuromas, pituitary adenomas and meningiomas. Four treatment plans were generated (54 Gy,1.8 Gy/fx) per patient: one LINAC plan, one clinical Lightning plan ("LGK") and two prototype Lightning plans ("LGK Hom" and "LGK OAR"). We analyzed Dmean and D2% for different OAR, Gradient Index (GI), Paddick Conformity Index (PCI), Homogeneity Index (HI) and beam-on-time (BOT). RESULTS While the LINAC vs. Lightning plans (LGK Hom|LGK OAR|LGK) boast better homogeneity (median: 1.08 vs. 1.18|1.24|1.35) and shorter BOT (median: 137 s vs. 432 s|510 s|510 s), Lightning plans show improved GI (median: 6.68 vs. 3.86|3.50|3.19), similar PCI (median: 0.75 vs. 0.76|0.75|0.82) and significantly reduced OAR doses. For in-tumor OAR, LGK Hom and LINAC plans achieves similar OAR sparing with improved GI for LGK Hom. CONCLUSIONS This study is a preliminary attempt to combine the dosimetric advantages of LINAC and LGK treatment planning. We observed that LGK plan homogeneity can be improved toward LINAC standards while maintaining the LGK advantage of favorable OAR doses and GI. Additionally, in-tumor OAR hotspots can be considerably reduced.
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Affiliation(s)
- Manon Spaniol
- Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
| | - Yasser Abo-Madyan
- Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
| | - Arne M Ruder
- Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
| | - Jens Fleckenstein
- Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
| | - Frank A Giordano
- Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
| | - Florian Stieler
- Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
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Upadhyay R, Ayan AS, Jain S, Klamer BG, Perlow HK, Zoller W, Blakaj DM, Beyer S, Grecula J, Arnett A, Thomas E, Chakravarti A, Raval RR, Palmer JD. Dose-Volume Tolerance of the Brain and Predictors of Radiation Necrosis After 3-Fraction Radiosurgery for Brain Metastases: A Large Single-Institutional Analysis. Int J Radiat Oncol Biol Phys 2024; 118:275-284. [PMID: 37574170 DOI: 10.1016/j.ijrobp.2023.07.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/26/2023] [Accepted: 07/29/2023] [Indexed: 08/15/2023]
Abstract
PURPOSE Stereotactic radiosurgery (SRS) is the current standard of care in patients with brain metastases and controlled extracranial disease. Radiation necrosis (RN) is the dose-limiting side effect of SRS, but the dose constraints especially for fractionated SRS remain poorly defined. We assessed the risk of RN after 3-fraction SRS with a goal to identify specific dose-volume constraints associated with grade 3 or higher RN (G3RN). METHODS AND MATERIALS A single-institutional retrospective review of patients treated with 3-fraction SRS was performed. The primary endpoint was G3RN, which was defined as severe symptoms with evidence of necrosis on magnetic resonance imaging with perfusion and/or biopsy confirmation. Tissue volume around each target lesion was contoured, and volumetric doses per lesion were recorded. Logistic regression models were used to estimate the relationship between RN and each volumetric dose, and normal tissue complication probability modeling was performed using a modified Lyman-Kutcher-Burman model. RESULTS From 2015 to 2021, 434 patients underwent 539 courses of linear accelerator-based SRS; 2518 lesions were treated. Median SRS dose was 24 Gy. Median follow-up after SRS was 7.9 months, and the median overall survival was 9 months. A total of 93 patients (17.2%) and 123 lesions (4.9%) developed any RN. Forty-two patients (7.8%) and 57 lesions (2.3%) developed G3RN. On logistic regression, V20 and V23 were best predictors of any grade RN and G3RN, respectively, with cutoff values of 4 cc, 10 cc, and 20 cc associated with <5%, <7.5%, and <10% risk of any RN, respectively, and V23 < 15 cc associated with <5% risk of G3RN. With constrained optimization of the normal tissue complication probability Lyman-Kutcher-Burman model for G3RN, we obtained a TD50 (uniform dose resulting in a 50% complication risk) of 31.4 Gy (95% CI, 27.8-35.1 Gy). CONCLUSIONS In patients receiving 3-fraction SRS, G3RN was seen in 7.8% of patients, and 2.3% of the lesions were treated. V20 and V23 were the most robust dosimetric parameters associated with RN. Further studies evaluating the outcomes and RN in patients treated with fractionated SRS compared with single-fraction SRS are warranted.
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Affiliation(s)
- Rituraj Upadhyay
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Ahmet S Ayan
- Division of Radiation Physics, Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Sagarika Jain
- Division of Radiation Physics, Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Brett G Klamer
- Center for Biostatistics, Ohio State University, Columbus, Ohio
| | - Haley K Perlow
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Wesley Zoller
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Dukagjin M Blakaj
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Sasha Beyer
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - John Grecula
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Andrea Arnett
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Evan Thomas
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Arnab Chakravarti
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Raju R Raval
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio
| | - Joshua D Palmer
- Department of Radiation Oncology, Ohio State University James Cancer Center, Columbus, Ohio.
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5
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Upadhyay R, Klamer BG, Perlow HK, White JR, Bazan JG, Jhawar SR, Blakaj DM, Grecula JC, Arnett A, Mestres-Villanueva MA, Healy EH, Thomas EM, Chakravarti A, Raval RR, Lustberg M, Williams NO, Palmer JD, Beyer SJ. Stereotactic Radiosurgery for Women Older than 65 with Breast Cancer Brain Metastases. Cancers (Basel) 2023; 16:137. [PMID: 38201564 PMCID: PMC10778270 DOI: 10.3390/cancers16010137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Breast cancer is the second most common cause of brain metastases (BM). Despite increasing incidence of BM in older women, there are limited data on the optimal management of BM in this age group. In this study, we assessed the survival outcomes and treatment patterns of older breast cancer patients ≥65 years old with BM compared to younger patients at our institution. METHODS An IRB-approved single-institutional retrospective review of biopsy-proven breast cancer patients with BM treated with 1- to 5-fraction stereotactic radiation therapy (SRS) from 2015 to 2020 was performed. Primary endpoint was intracranial progression-free survival (PFS) defined as the time interval between the end of SRS to the date of the first CNS progression. Secondary endpoints were overall survival (OS) from the end of SRS and radiation treatment patterns. Kaplan-Meier estimates and Cox proportional hazard regression method were used for survival analyses. RESULTS A total of 112 metastatic breast cancer patients with BMs were included of which 24 were ≥65 years old and 88 were <65 years old. Median age at RT was 72 years (range 65-84) compared to 52 years (31-64) in younger patients. There were significantly higher number of older women with ER/PR positive disease (75% vs. 49%, p = 0.036), while younger patients were more frequently triple negative (32% vs. 12%, p = 0.074) and HER2 positive (42% vs. 29%, p = 0.3). Treatment-related adverse events were similar in both groups. Overall, 14.3% patients had any grade radiation necrosis (RN) (older vs. young: 8.3% vs. 16%, p = 0.5) while 5.4% had grade 3 or higher RN (0% vs. 6.8%, p = 0.7). Median OS after RT was poorer in older patients compared to younger patients (9.5 months vs. 14.5 months, p = 0.037), while intracranial PFS from RT was similar between the two groups (9.7 months vs. 7.1 months, p = 0.580). On univariate analysis, significant predictors of OS were age ≥65 years old (hazard risk, HR = 1.70, p = 0.048), KPS ≤ 80 (HR = 2.24, p < 0.001), HER2 positive disease (HR = 0.46, p < 0.001), isolated CNS metastatic disease (HR = 0.29, p < 0.001), number of brain metastases treated with RT (HR = 1.06, p = 0.028), and fractionated SRS (HR = 0.53, p = 0.013). On multivariable analysis, KPS ≤ 80, HER2 negativity and higher number of brain metastases predicted for poorer survival, while age was not a significant factor for OS after adjusting for other variables. Patients who received systemic therapy after SRS had a significantly improved OS on univariate and multivariable analysis (HR = 0.32, p < 0.001). Number of brain metastases treated was the only factor predictive of worse PFS (HR = 1.06, p = 0.041), which implies a 6% additive risk of progression for every additional metastasis treated. CONCLUSIONS Although older women had poorer OS than younger women, OS was similar after adjusting for KPS, extracranial progression, and systemic therapy; and there was no difference in rates of intracranial PFS, neurological deaths, and LMD in the different age groups. This study suggests that age alone may not play an independent role in treatment-selection and that outcomes for breast cancer patients with BMs and personalized decision-making including other clinical factors should be considered. Future studies are warranted to assess neurocognitive outcomes and other radiation treatment toxicities in older patients.
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Affiliation(s)
- Rituraj Upadhyay
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Brett G. Klamer
- Department of Biostatistics, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA;
| | - Haley K. Perlow
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Julia R. White
- Department of Radiation Oncology, The University of Kansas Medical Center, Kansas City, KS 66103, USA;
| | - Jose G. Bazan
- Department of Radiation Oncology, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA;
| | - Sachin R. Jhawar
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Dukagjin M. Blakaj
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - John C. Grecula
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Andrea Arnett
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Mariella A. Mestres-Villanueva
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Erin H. Healy
- Department of Radiation Oncology, University of California, Irvine, CA 92697, USA;
| | - Evan M. Thomas
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Arnab Chakravarti
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Raju R. Raval
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Maryam Lustberg
- Department of Medical Oncology, Yale Cancer Center, New Haven, CT 06511, USA;
| | - Nicole O. Williams
- Department of Medical Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA;
| | - Joshua D. Palmer
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
| | - Sasha J. Beyer
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA; (R.U.); (H.K.P.); (S.R.J.); (D.M.B.); (J.C.G.); (A.A.); (M.A.M.-V.); (E.M.T.); (A.C.); (R.R.R.); (J.D.P.)
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Čehobašić A, Paladino J, Kaučić H, Mišir-Krpan A, Leipold V, Mlinarić M, Kosmina D, Mack A, Schwarz D, Divošević S, Alerić I. Comparison of 116 Radiosurgery Treatment Plans for Multi-Leaf and Cone Collimator on a Varian Edge Linac: Are Cones Superior in the Daily Routine? Life (Basel) 2023; 13:life13041020. [PMID: 37109549 PMCID: PMC10146576 DOI: 10.3390/life13041020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/07/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Delivering focused radiation doses via linear accelerators is a crucial component of stereotactic radiosurgery (SRS) for brain metastases. The Varian Edge linear accelerator provides highly conformal radiation therapy through a high-definition multi-leaf collimator (HD120 MLC) and conical collimator (CC). HD120 MLC adapts to the shape of the target volume using movable tungsten leaves, while CC has a block of conical shape (cones). CC in SRS treatments of small brain metastases is preferred due to its mechanical stability and steeper dose fall-off, potentially sparing organs at risk (OARs) and the brain better than HD120 MLC. This study aims to determine if CC offers significant advantages over HD120 MLC for SRS treatments. For 116 metastatic lesions, CC and HD120 MLC treatment plans were created in Varian Eclipse TPS and compared based on various dose parameters, robustness tests, and QA measurements. The results indicate that CC provides no significant advantages over HD120 MLC, except for slight, clinically insignificant benefits in brain sparing and dose fall-off for the smallest lesions. HD120 MLC outperforms CC in almost every aspect, making it a better choice for irradiating brain metastases with 0.1 cm3 or higher volumes.
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Affiliation(s)
- Adlan Čehobašić
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
- Medicinski Fakultet Osijek, Sveučilište Josipa Jurja Strossmayera u Osijeku, Josipa Huttlera 4, 31000 Osijek, Croatia
| | - Josip Paladino
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
| | - Hrvoje Kaučić
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
| | - Ana Mišir-Krpan
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
- Medicinski Fakultet, Sveučilište u Zagrebu, Šalata 3, 10000 Zagreb, Croatia
| | - Vanda Leipold
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
- Medicinski Fakultet Osijek, Sveučilište Josipa Jurja Strossmayera u Osijeku, Josipa Huttlera 4, 31000 Osijek, Croatia
| | - Mihaela Mlinarić
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
| | - Domagoj Kosmina
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
| | - Andreas Mack
- Swiss NeuroRadiosurgery Center, Bürglistrasse 29, 8002 Zürich, Switzerland
| | - Dragan Schwarz
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
- Medicinski Fakultet, Sveučilišta u Rijeci, Braće Branchetta 20/1, 51000 Rijeka, Croatia
- Fakultet za Dentalnu Medicinu i Zdravstvo Osijek, Sveučilište Josipa Jurja Strossmayera u Osijeku, Crkvena Ulica 21, 31000 Osijek, Croatia
| | - Sunčana Divošević
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
| | - Ivana Alerić
- Specijalna Bolnica Radiochirurgia Zagreb, Ulica Dr. Franje Tuđmana 4, 10431 Sveta Nedelja, Croatia
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Becker SJ, Lipson EJ, Jozsef G, Molitoris JK, Silverman JS, Presser J, Kondziolka D. How many brain metastases can be treated with stereotactic radiosurgery before the radiation dose delivered to normal brain tissue rivals that associated with standard whole brain radiotherapy? J Appl Clin Med Phys 2023; 24:e13856. [PMID: 36628586 PMCID: PMC10018670 DOI: 10.1002/acm2.13856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/03/2022] [Accepted: 11/14/2022] [Indexed: 01/12/2023] Open
Abstract
INTRODUCTION Clinical trial data comparing outcomes after administration of stereotactic radiosurgery (SRS) or whole-brain radiotherapy (WBRT) to patients with brain metastases (BM) suggest that SRS better preserves cognitive function and quality of life without negatively impacting overall survival. Here, we estimate the maximum number of BM that can be treated using single and multi-session SRS while limiting the dose of radiation delivered to normal brain tissue to that associated with WBRT. METHODS Multiple-tumor SRS was simulated using a Monte Carlo - type approach and a pre-calculated dose kernel method. Tumors with diameters ≤36 mm were randomly placed throughout the contoured brain parenchyma until the brain mean dose reached 3 Gy, equivalent to the radiation dose delivered during a single fraction of a standard course of WBRT (a total dose of 30 Gy in 10 daily fractions of 3 Gy). Distribution of tumor sizes, dose coverage, selectivity, normalization, and maximum dose data used in the simulations were based on institutional clinical metastases data. RESULTS The mean number of tumors treated, mean volume of healthy brain tissue receiving > 12 Gy (V12) per tumor, and total tumor volume treated using mixed tumor size distributions were 12.7 ± 4.2, 2.2 cc, and 12.9 cc, respectively. Thus, we estimate that treating 12-13 tumors per day over 10 days would deliver the dose of radiation to healthy brain tissue typically associated with a standard course of WBRT. CONCLUSION Although in clinical practice, treatment with SRS is often limited to patients with ≤15 BM, our findings suggest that many more lesions could be targeted while still minimizing the negative impacts on quality of life and neurocognition often associated with WBRT. Results from this in silico analysis require clinical validation.
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Affiliation(s)
- Stewart J Becker
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Evan J Lipson
- Bloomberg∼Kimmel Institute for Cancer Immunotherapy and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland, USA
| | - Gabor Jozsef
- Department of Radiation Oncology, Weill Cornell Medicine, New York, New York, USA
| | - Jason K Molitoris
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Joshua S Silverman
- Department of Radiation Oncology, New York University Langone Medical Center, New York, New York, USA
| | - Joseph Presser
- Department of Radiation Oncology, Mount Sinai South Nassau, Oceanside, New York, USA
| | - Douglas Kondziolka
- Department of Radiation Oncology, New York University Langone Medical Center, New York, New York, USA.,Department of Neurosurgery, New York University Langone Medical Center, New York, New York, USA
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8
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Zhang Q, Hamilton D, Conway P, Xie SJ, Haghighi N, Lasocki A. Radiation necrosis and therapeutic outcomes in patients treated with linear accelerator-based hypofractionated stereotactic radiosurgery for intact intracranial metastases. J Med Imaging Radiat Oncol 2023; 67:308-319. [PMID: 36847751 DOI: 10.1111/1754-9485.13519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/13/2023] [Indexed: 03/01/2023]
Abstract
INTRODUCTION Balancing disease control and treatment-related toxicities can be challenging when treating higher-risk brain metastases (BMs) that are larger in size or eloquent anatomical locations. Hypofractionated stereotactic radiosurgery (hfSRS) is expected to offer superior or equal efficacy with lower toxicity profile compared with single-fraction SRS (sfSRS). We report the efficacy and toxicity profiles of hfSRS in a consecutive cohort of patients to support this predicted benefit from hfSRS for high-risk BMs. METHODS We retrospectively analysed 185 consecutive individual lesions from 152 patients with intact BMs treated with hfSRS between 1 July 2016 and 31 October 2019 and followed up to 30 April 2022 with serial brain magnetic resonance imaging (MRI). The primary endpoint was the event of radiation necrosis (RN). Local control (LC) rate and distant brain failure (DBF) were reported as secondary outcomes. Kaplan-Meier method was used to report the cumulative incidence of RN and overall survival and the incidence of DBF. Potential risk factors for RN were assessed using univariable Cox regression analysis. RESULTS The median follow-up was 38.0 months, and the median survival post-SRS was 9.5 months. The cumulative incidence rate of RN was 13.2% (95% CI: 7.0-24.7%), and 18.1% of patients with confirmed RN were symptomatic. Higher mean dose delivered to planning target volume (PTV) (HR 1.22, 95% CI: 1.05-1.42, P = 0.01), higher mean BED10 (biological equivalent dose assuming a tissue α / β $$ \alpha /\beta $$ ratio of 10) (HR 1.12, 95% CI: 1.04-1.2, P < 0.001), and higher mean BED2 (HR 1.02, 95% CI: 1-1.04, P = 0.04) delivered to the lesion was associated with increased risk of RN. LC rate was 86% and the cumulative incidence of DBF was 36% with a median onset of 28.4 months. CONCLUSIONS Our results support the predicted radiobiological benefit of the use of hfSRS in high-risk BMs to limit treatment-related toxicity with low risk for symptomatic RN comparable with lower risk population receiving sfSRS while achieving satisfactory local disease control.
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Affiliation(s)
- Qichen Zhang
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Icon Cancer Centre Gold Coast University Hospital, Queensland, Gold Coast, Australia
| | - Daniel Hamilton
- Melbourne Medical School, Faculty of Medicine, Dentistry & Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.,MetaMelb Research Group, School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Paul Conway
- Icon Cancer Centre Richmond, Victoria, Melbourne, Australia
| | - Sophia Jing Xie
- Centre for Biostatistics and Clinical Trials, Peter MacCallum Cancer Centre, Victoria, Melbourne, Australia
| | - Neda Haghighi
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Arian Lasocki
- Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
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9
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Tang K, Zhang N, Yuan X, Qian Z, Li Y, Feng X. Conservation of pyramidal tract in radiosurgery for brain metastases of lung adenocarcinoma: Three-dimensional analysis of biologically effective dose. Radiother Oncol 2023; 179:109451. [PMID: 36586589 DOI: 10.1016/j.radonc.2022.109451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Gamma knife surgery (GKS) for brain metastases (BMs) adjacent to the pyramidal tract (PT) is still a challenge to conduct. PT visualization and biologically effective dose (BED) calculation on a voxel-by-voxel basis may provide data to establish clinically safe values. We aimed to assess the relationship of parameters extracted from the BED-volume histogram with outcomes of PT after GKS-treating target (adjacent BM of lung adenocarcinoma). METHODS We formed BED-volume histograms for 672 BMs in a retrospective cohort, using 3-dimensional (3D) coordinate values of PT, target, and each iso-centre to calculate the 3D BED distribution in a 200 × 200 × 200 matrix. PT conservation failure (PTCF) was judged clinically and radiologically and classified as lesion progression and radionecrosis. Cox proportional hazards models were used to analyse 3D BED parameters. Internal validation of models was performed by bootstrapping. RESULTS There were 116 (17.3 %) subjects with PTCF in the cohort, of which 74 (11.0 %) and 42 (6.3 %) were caused by lesion progression and radionecrosis, respectively. Multivariate analysis showed that DLesion_min BED and DLesion_90% BED significantly predicted lesion progression (P <.001). DPT_Max BED and VPT_ BED40 significantly predicted radionecrosis (P <.001). The model predicting PTCF showed fair discrimination and calibration of DLesion_min BED + DLesion_90% BED and DPT_Max BED + VPT_ BED40. CONCLUSIONS The conservation of PT in GKS for BMs of lung adenocarcinoma depends on the combination of PT-tolerated BED and target effective control BED. Therefore, a BED-volume histogram with a 3D BED algorithm is proposed to assess plan quality.
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Affiliation(s)
- Ke Tang
- Department of Neurosurgery, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, PR China.
| | - Nan Zhang
- Department of Neurosurgery, Huashan Hospital, Fudan University, 12 Wulumuqi (middle) Road, Shanghai, PR China
| | - Xiaodong Yuan
- Department of Radiology, The Eighth Medical Center of Chinese PLA General Hospital, 17 Heishanhu Road, Beijing, PR China
| | - Zenghui Qian
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, 119 Fanyang Road, Fengtai District, Beijing, PR China
| | - Yang Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Road, Beijing, PR China
| | - Xu Feng
- Department of Basic Medicine, Xiamen Medical College, 1999 Guankouzhong Road, Xiamen, Fujian Province, PR China
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10
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Dosimetric Impact of Lesion Number, Size, and Volume on Mean Brain Dose with Stereotactic Radiosurgery for Multiple Brain Metastases. Cancers (Basel) 2023; 15:cancers15030780. [PMID: 36765738 PMCID: PMC9913147 DOI: 10.3390/cancers15030780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
We evaluated the effect of lesion number and volume for brain metastasis treated with SRS using GammaKnife® ICON™ (GK) and CyberKnife® M6™ (CK). Four sets of lesion sizes (<5 mm, 5-10 mm, >10-15 mm, and >15 mm) were contoured and prescribed a dose of 20 Gy/1 fraction. The number of lesions was increased until a threshold mean brain dose of 8 Gy was reached; then individually optimized to achieve maximum conformity. Across GK plans, mean brain dose was linearly proportional to the number of lesions and total GTV for all sizes. The numbers of lesions needed to reach this threshold for GK were 177, 57, 29, and 10 for each size group, respectively; corresponding total GTVs were 3.62 cc, 20.37 cc, 30.25 cc, and 57.96 cc, respectively. For CK, the threshold numbers of lesions were 135, 35, 18, and 8, with corresponding total GTVs of 2.32 cc, 12.09 cc, 18.24 cc, and 41.52 cc respectively. Mean brain dose increased linearly with number of lesions and total GTV while V8 Gy, V10 Gy, and V12 Gy showed quadratic correlations to the number of lesions and total GTV. Modern dedicated intracranial SRS systems allow for treatment of numerous brain metastases especially for ≤10 mm; clinical evidence to support this practice is critical to expansion in the clinic.
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11
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Vetlova ER, Banov SM, Golanov AV, Pronin IN, Antipina NA, Galkin MV. [Results of hypofractionated stereotactic radiotherapy for resected and intact large brain metastases]. ZHURNAL VOPROSY NEIROKHIRURGII IMENI N. N. BURDENKO 2023; 87:67-75. [PMID: 38054229 DOI: 10.17116/neiro20238706167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Post-resection or isolated hypofractionated stereotactic radiotherapy (HF-SRT) is a therapeutic option for large brain metastases (>2 cm, LBMs). OBJECTIVE To compare the results of post-resection or isolated HF-SRT in patients with LBMs. MATERIAL AND METHODS A prospective study included 115 patients with 129 intact LBMs and 133 patients with 149 resected LBMs who underwent HF-SRT. Median baseline focal size was 22.5 and 28 mm, median target volume - 8.3 and 23.7 cm3, respectively. RESULTS Median follow-up was 13.9 months, median overall survival - 19.1 months. After 12 months, local recurrences developed in 17 and 31% of patients, respectively (p=0.0078). Local recurrence after 12 months developed in 23% of patients with residual tumor in postoperative cavity compared to 16% of patients after total resection (p=0.0073). After 12 months, incidence of leptomeningeal progression was 27 and 11%, respectively (p=0.033), incidence of symptomatic radiation-induced necrosis - 4 and 23%, respectively (p=0.0006). CONCLUSION Post-resection HF-SRT demonstrated better local control and less severe symptomatic radiation-induced necrosis compared to patients with intact LBMs. Incidence of leptomeningeal progression is significantly higher after resection of LBMs.
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Affiliation(s)
- E R Vetlova
- Burdenko Neurosurgical Center, Moscow, Russia
| | - S M Banov
- Burdenko Neurosurgical Center, Moscow, Russia
| | - A V Golanov
- Burdenko Neurosurgical Center, Moscow, Russia
- Russian Medical Academy of Continuing Professional Education, Moscow, Russia
| | - I N Pronin
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - M V Galkin
- Burdenko Neurosurgical Center, Moscow, Russia
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12
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Hintelmann K, Petersen C, Borgmann K. Radiotherapeutic Strategies to Overcome Resistance of Breast Cancer Brain Metastases by Considering Immunogenic Aspects of Cancer Stem Cells. Cancers (Basel) 2022; 15:211. [PMID: 36612206 PMCID: PMC9818478 DOI: 10.3390/cancers15010211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Breast cancer is the most diagnosed cancer in women, and symptomatic brain metastases (BCBMs) occur in 15-20% of metastatic breast cancer cases. Despite technological advances in radiation therapy (RT), the prognosis of patients is limited. This has been attributed to radioresistant breast cancer stem cells (BCSCs), among other factors. The aim of this review article is to summarize the evidence of cancer-stem-cell-mediated radioresistance in brain metastases of breast cancer from radiobiologic and radiation oncologic perspectives to allow for the better interpretability of preclinical and clinical evidence and to facilitate its translation into new therapeutic strategies. To this end, the etiology of brain metastasis in breast cancer, its radiotherapeutic treatment options, resistance mechanisms in BCSCs, and effects of molecularly targeted therapies in combination with radiotherapy involving immune checkpoint inhibitors are described and classified. This is considered in the context of the central nervous system (CNS) as a particular metastatic niche involving the blood-brain barrier and the CNS immune system. The compilation of this existing knowledge serves to identify possible synergistic effects between systemic molecularly targeted therapies and ionizing radiation (IR) by considering both BCSCs' relevant resistance mechanisms and effects on normal tissue of the CNS.
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Affiliation(s)
- Katharina Hintelmann
- Department of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- Laboratory of Radiobiology and Experimental Radiooncology, Center of Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Cordula Petersen
- Department of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Kerstin Borgmann
- Laboratory of Radiobiology and Experimental Radiooncology, Center of Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
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13
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Carpenter DJ, Fairchild AT, Adamson JD, Fecci PE, Sampson JH, Herndon JE, Torok JA, Mullikin TC, Kim GJ, Reitman ZJ, Kirkpatrick JP, Floyd SR. Outcomes in Patients with Intact and Resected Brain Metastasis Treated with 5-Fraction Stereotactic Radiosurgery. Adv Radiat Oncol 2022; 8:101166. [PMID: 36845614 PMCID: PMC9943776 DOI: 10.1016/j.adro.2022.101166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
Purpose Hypofractionated stereotactic radiosurgery (HF-SRS) with or without surgical resection is potentially a preferred treatment for larger or symptomatic brain metastases (BMs). Herein, we report clinical outcomes and predictive factors following HF-SRS. Methods and Materials Patients undergoing HF-SRS for intact (iHF-SRS) or resected (rHF-SRS) BMs from 2008 to 2018 were retrospectively identified. Linear accelerator-based image-guided HF-SRS consisted of 5 fractions at 5, 5.5, or 6 Gy per fraction. Time to local progression (LP), time to distant brain progression (DBP), and overall survival (OS) were calculated. Cox models assessed effect of clinical factors on OS. Fine and Gray's cumulative incidence model for competing events examined effect of factors on LP and DBP. The occurrence of leptomeningeal disease (LMD) was determined. Logistic regression examined predictors of LMD. Results Among 445 patients, median age was 63.5 years; 87% had Karnofsky performance status ≥70. Fifty-three % of patients underwent surgical resection, and 75% received 5 Gy per fraction. Patients with resected BMs had higher Karnofsky performance status (90-100, 41 vs 30%), less extracranial disease (absent, 25 vs 13%), and fewer BMs (multiple, 32 vs 67%). Median diameter of the dominant BM was 3.0 cm (interquartile range, 1.8-3.6 cm) for intact BMs and 4.6 cm (interquartile range, 3.9-5.5 cm) for resected BMs. Median OS was 5.1 months (95% confidence interval [CI], 4.3-6.0) following iHF-SRS and 12.8 months (95% CI, 10.8-16.2) following rHF-SRS (P < .01). Cumulative LP incidence was 14.5% at 18 months (95% CI, 11.4-18.0%), significantly associated with greater total GTV (hazard ratio, 1.12; 95% CI, 1.05-1.20) following iFR-SRS, and with recurrent versus newly diagnosed BMs across all patients (hazard ratio, 2.28; 95% CI, 1.01-5.15). Cumulative DBP incidence was significantly greater following rHF-SRS than iHF-SRS (P = .01), with respective 24-month rates of 50.0 (95% CI, 43.3-56.3) and 35.7% (95% CI, 29.2-42.2). LMD (57 events total; 33% nodular, 67% diffuse) was observed in 17.1% of rHF-SRS and 8.1% of iHF-SRS cases (odds ratio, 2.46; 95% CI, 1.34-4.53). Any radionecrosis and grade 2+ radionecrosis events were observed in 14 and 8% of cases, respectively. Conclusions HF-SRS demonstrated favorable rates of LC and radionecrosis in postoperative and intact settings. Corresponding LMD and RN rates were comparable to those of other studies.
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Affiliation(s)
- David J. Carpenter
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina,Corresponding author: Scott Floyd, MD, PhD
| | | | - Justus D. Adamson
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Peter E. Fecci
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina
| | - John H. Sampson
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina
| | - James E. Herndon
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - Jordan A. Torok
- Department of Radiation Oncology, St. Clair Hospital Cancer Center, Pittsburgh, Pennsylvania
| | - Trey C. Mullikin
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Grace J. Kim
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Zachary J. Reitman
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - John P. Kirkpatrick
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina
| | - Scott R. Floyd
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
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14
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Yan M, Holden L, Wang M, Soliman H, Myrehaug S, Tseng CL, Detsky J, Ruschin M, Tjong M, Atenafu EG, Das S, Lipsman N, Heyn C, Sahgal A, Husain Z. Gamma knife icon based hypofractionated stereotactic radiosurgery (GKI-HSRS) for brain metastases: impact of dose and volume. J Neurooncol 2022; 159:705-712. [PMID: 35999435 DOI: 10.1007/s11060-022-04115-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/09/2022] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Gamma Knife Icon-based hypofractionated stereotactic radiosurgery (GKI-HSRS) is a novel technical paradigm in the treatment of brain metastases that allows for both the dosimetric benefits of the GKI stereotactic radiosurgery (SRS) platform as well as the biologic benefits of fractionation. We report mature local control and adverse radiation effect (ARE) outcomes following 5 fraction GKI-HSRS for intact brain metastases. METHODS Patients with intact brain metastases treated with 5-fraction GKI-HSRS were retrospectively reviewed. Survival, local control, and adverse radiation effect rates were determined. Univariable and multivariable regression (MVA) were performed on potential predictive factors. RESULTS Two hundred and ninety-nine metastases in 146 patients were identified. The median clinical follow-up was 10.7 months (range 0.5-47.6). The median total dose and prescription isodose was 27.5 Gy (range, 20-27.5) in 5 daily fractions and 52% (range, 45-93), respectively. The median overall survival (OS) was 12.7 months, and the 1-year local failure rate was 15.2%. MVA identified a total dose of 27.5 Gy vs. ≤ 25 Gy (hazard ratio [HR] 0.59, p = 0.042), and prior chemotherapy exposure (HR 1.99, p = 0.015), as significant predictors of LC. The 1-year ARE rate was 10.8% and the symptomatic ARE rate was 1.8%. MVA identified a gross tumor volume of ≥ 4.5 cc (HR 7.29, p < 0.001) as a significant predictor of symptomatic ARE. CONCLUSION Moderate total doses in 5 daily fractions of GKI-HSRS were associated with high rates of LC and a low incidence of symptomatic ARE.
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Affiliation(s)
- Michael Yan
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Lori Holden
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Michael Wang
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Hany Soliman
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Sten Myrehaug
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Chia-Lin Tseng
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Jay Detsky
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Mark Ruschin
- Department of Medical Physics, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Michael Tjong
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Eshetu G Atenafu
- Department of Biostatistics, Princess Margaret Cancer Center, University of Toronto, Toronto, Canada
| | - Sunit Das
- Department of Neurosurgery, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Nir Lipsman
- Department of Neurosurgery, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - Chinthaka Heyn
- Department of Radiology, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - Arjun Sahgal
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada
| | - Zain Husain
- Department of Radiation Oncology, Odette Cancer Center, University of Toronto, Toronto, Canada. .,Sunnybrook Health Sciences Center, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.
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15
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Wang T, Chen J, Yang J, Fu M, Hua W, Jia W, Liu Y, Wang B, Yan M, Zhou J, Hao C, Chen J, Ou D, Jiang T, Mao Y, Jiang Z. CSCO expert consensus on the diagnosis and treatment of breast cancer brain metastasis. TRANSLATIONAL BREAST CANCER RESEARCH : A JOURNAL FOCUSING ON TRANSLATIONAL RESEARCH IN BREAST CANCER 2022; 3:22. [PMID: 38751521 PMCID: PMC11092996 DOI: 10.21037/tbcr-22-30] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/28/2022] [Indexed: 05/18/2024]
Abstract
Breast cancer is one of the most common malignancies among women worldwide. According to the International Agency for Research on Cancer, breast cancer affected more Chinese women than any other cancer in 2020. The brain is an increasingly common metastatic sites of breast cancer. Although the risk of developing brain metastases (BMs) is lower in breast cancer than in lung cancer and melanoma, due to its high prevalence, it is the second most common cause of BM among solid tumors, being second only to lung cancer. The incidence of breast cancer brain metastasis (BCBM) differs by molecular subtype. Half of patients with advanced human epidermal growth factor receptor-2 (HER2)-positive and one-third of patients with triple-negative breast cancer (TNBC) develop BM. The clinical manifestations of leptomeningeal metastasis (LM) are often non-specific and may manifest as a variety of signs and symptoms, mainly including brain parenchyma involvement and meningeal irritation syndromes cranial nerve involvement, increased intracranial pressure, and progressive brain dysfunction. Therefore, the Chinese Society of Clinical Oncology (CSCO) Breast Cancer Committee has developed this expert consensus on BM, in an effort to improve the overall prognosis of BCBM and promote the standardized diagnosis and treatment of this disease. During the development of this expert consensus, we carried out a comprehensive literature review and referred to some of the most authoritative guidelines in China and abroad. In this consensus, we will discuss clinical manifestations, imaging examinations, pathological diagnosis, treatments, prognosis, follow-up and monitoring. We hope this consensus will be of help to all the clinicians majored in breast cancer and other similar professions.
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Affiliation(s)
- Tao Wang
- Senior Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Jiayi Chen
- Department of Radiotherapy, Ruijin Affiliated Hospital of Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jin Yang
- Department of Oncology, The First Affiliated Hospital of Xi‘an Jiaotong University, Xi’an, China
| | - Minjie Fu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Hua
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wang Jia
- Department of Neurosurgery, Tiantan Hospital, Beijing, China
| | - Yueping Liu
- Department of Pathology, Fourth Hospital Affiliated of Hebei Medical University, Shijiazhuang, China
| | - Biyun Wang
- Department of Oncology, Cancer Hospital Affiliated to Fudan University, ShanghaiChina
| | - Min Yan
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Juan Zhou
- Senior Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Chunfang Hao
- Department of Oncology, Tumor Hospital of Tianjin, Tianjin, China
| | - Jiaxin Chen
- Senior Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Dan Ou
- Department of Radiotherapy, Ruijin Affiliated Hospital of Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Tao Jiang
- Department of Neurosurgery, Tiantan Hospital, Beijing, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zefei Jiang
- Senior Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - the CSCO expert panel of breast cancer*TengYueeZhangQingyuanLiManJinFengJiangZefeiWangTaoWenJuyiHaoChunfangGengCuizhiLiuYunjiangLiuYuepingZhangJunYanMinWanHaiboYuZhigangYinYongmeiPanYueyinChenJiayiWangBiyunWangXiaojiaOuyangQuchangLiuJiaLiuShuLiuQiangWangKunWangShusenNieJianyunLiHongyuanLiuXinlanSunGangXueYanYangJin
- Senior Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
- Department of Radiotherapy, Ruijin Affiliated Hospital of Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Oncology, The First Affiliated Hospital of Xi‘an Jiaotong University, Xi’an, China
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Neurosurgery, Tiantan Hospital, Beijing, China
- Department of Pathology, Fourth Hospital Affiliated of Hebei Medical University, Shijiazhuang, China
- Department of Oncology, Cancer Hospital Affiliated to Fudan University, ShanghaiChina
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
- Department of Oncology, Tumor Hospital of Tianjin, Tianjin, China
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16
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Gondi V, Bauman G, Bradfield L, Burri SH, Cabrera AR, Cunningham DA, Eaton BR, Hattangadi-Gluth JA, Kim MM, Kotecha R, Kraemer L, Li J, Nagpal S, Rusthoven CG, Suh JH, Tomé WA, Wang TJC, Zimmer AS, Ziu M, Brown PD. Radiation Therapy for Brain Metastases: An ASTRO Clinical Practice Guideline. Pract Radiat Oncol 2022; 12:265-282. [PMID: 35534352 DOI: 10.1016/j.prro.2022.02.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 02/07/2022] [Indexed: 12/24/2022]
Abstract
PURPOSE This guideline provides updated evidence-based recommendations addressing recent developments in the management of patients with brain metastases, including advanced radiation therapy techniques such as stereotactic radiosurgery (SRS) and hippocampal avoidance whole brain radiation therapy and the emergence of systemic therapies with central nervous system activity. METHODS The American Society for Radiation Oncology convened a task force to address 4 key questions focused on the radiotherapeutic management of intact and resected brain metastases from nonhematologic solid tumors. The guideline is based on a systematic review provided by the Agency for Healthcare Research and Quality. Recommendations were created using a predefined consensus-building methodology and system for grading evidence quality and recommendation strength. RESULTS Strong recommendations are made for SRS for patients with limited brain metastases and Eastern Cooperative Oncology Group performance status 0 to 2. Multidisciplinary discussion with neurosurgery is conditionally recommended to consider surgical resection for all tumors causing mass effect and/or that are greater than 4 cm. For patients with symptomatic brain metastases, upfront local therapy is strongly recommended. For patients with asymptomatic brain metastases eligible for central nervous system-active systemic therapy, multidisciplinary and patient-centered decision-making to determine whether local therapy may be safely deferred is conditionally recommended. For patients with resected brain metastases, SRS is strongly recommended to improve local control. For patients with favorable prognosis and brain metastases receiving whole brain radiation therapy, hippocampal avoidance and memantine are strongly recommended. For patients with poor prognosis, early introduction of palliative care for symptom management and caregiver support are strongly recommended. CONCLUSIONS The task force has proposed recommendations to inform best clinical practices on the use of radiation therapy for brain metastases with strong emphasis on multidisciplinary care.
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Affiliation(s)
- Vinai Gondi
- Department of Radiation Oncology, Northwestern Medicine Cancer Center and Proton Center, Warrenville, Illinois.
| | - Glenn Bauman
- Division of Radiation Oncology, Department of Oncology, London Health Sciences Centre & Western University, London, Ontario, Canada
| | - Lisa Bradfield
- American Society for Radiation Oncology, Arlington, Virginia
| | - Stuart H Burri
- Department of Radiation Oncology, Atrium Health, Charlotte, North Carolina
| | - Alvin R Cabrera
- Department of Radiation Oncology, Kaiser Permanente, Seattle, Washington
| | | | - Bree R Eaton
- Department of Radiation Oncology, Emory University, Atlanta, Georgia
| | | | - Michelle M Kim
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan
| | - Rupesh Kotecha
- Department of Radiation Oncology, Miami Cancer Institute, Baptist Health South Florida, Miami, Florida
| | | | - Jing Li
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Seema Nagpal
- Division of Neuro-oncology, Department of Neurology, Stanford University, Stanford, California
| | - Chad G Rusthoven
- Department of Radiation Oncology, University of Colorado, Aurora, Colorado
| | - John H Suh
- Department of Radiation Oncology, Cleveland Clinic Taussig Cancer Institute, Cleveland, Ohio
| | - Wolfgang A Tomé
- Department of Radiation Oncology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, New York
| | - Tony J C Wang
- Department of Radiation Oncology, Columbia University, New York, New York
| | - Alexandra S Zimmer
- Women's Malignancies Branch, National Institutes of Health/National Cancer Institute, Bethesda, Maryland
| | - Mateo Ziu
- Department of Neurosciences, INOVA Neuroscience and INOVA Schar Cancer Institute, Falls Church, Virginia
| | - Paul D Brown
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
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Outcomes in Patients With 4 to 10 Brain Metastases Treated With Dose-Adapted Single-Isocenter Multitarget Stereotactic Radiosurgery: A Prospective Study. Adv Radiat Oncol 2021; 6:100760. [PMID: 34934856 PMCID: PMC8655418 DOI: 10.1016/j.adro.2021.100760] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/13/2021] [Indexed: 12/20/2022] Open
Abstract
Purpose To examine the effectiveness and safety of single-isocenter multitarget stereotactic radiosurgery using a volume-adapted dosing strategy in patients with 4 to 10 brain metastases. Methods and Materials Adult patients with 4 to 10 brain metastases were eligible for this prospective trial. The primary endpoint was overall survival. Secondary endpoints were local recurrence, distant brain failure, neurologic death, and rate of adverse events. Exploratory objectives were neurocognition, quality of life, dosimetric data, salvage rate, and radionecrosis. Dose was prescribed in a single fraction per RTOG 90-05 or as 5 Gy × 5 fractions for lesions ≥3 cm diameter, lesions involving critical structures, or single-fraction brain V12Gy >20 mL. Results Forty patients were treated with median age of 61 years, Karnofsky performance status 90, and 6 brain metastases. Twenty-two patients survived longer than expected from the time of protocol SRS, with 1 living patient who has not reached that milestone. Median overall survival was 8.1 months with a 1-year overall survival of 35.7%. The 1-year local recurrence rate was 5% (10 of 204 of evaluable lesions) in 12.5% (4 of 32) of the patients. Distant brain failure was observed in 19 of 32 patients with a 1-year rate of 35.8%. Grade 1-2 headache was the most common complaint, with no grade 3-5 treatment-related adverse events. Radionecrosis was observed in only 5 lesions, with a 1-year rate of 1.5%. Rate of neurologic death was 20%. Neurocognition and quality of life did not significantly change 3 months after SRS compared with pretreatment. Conclusions These results suggest that volume-adapted dosing single-isocenter multitarget stereotactic radiosurgery is an effective and safe treatment for patients with 4 to 10 brain metastases.
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Loo M, Clavier JB, Attal Khalifa J, Moyal E, Khalifa J. Dose-Response Effect and Dose-Toxicity in Stereotactic Radiotherapy for Brain Metastases: A Review. Cancers (Basel) 2021; 13:cancers13236086. [PMID: 34885193 PMCID: PMC8657210 DOI: 10.3390/cancers13236086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 11/29/2022] Open
Abstract
Simple Summary Brain metastases are one of the most frequent complications for cancer patients. Stereotactic radiosurgery is considered a cornerstone treatment for patients with limited brain metastases and the ideal dose and fractionation schedule still remain unknown. The aim of this literature review is to discuss the dose-effect relation in brain metastases treated by stereotactic radiosurgery, accounting for fractionation and technical considerations. Abstract For more than two decades, stereotactic radiosurgery has been considered a cornerstone treatment for patients with limited brain metastases. Historically, radiosurgery in a single fraction has been the standard of care but recent technical advances have also enabled the delivery of hypofractionated stereotactic radiotherapy for dedicated situations. Only few studies have investigated the efficacy and toxicity profile of different hypofractionated schedules but, to date, the ideal dose and fractionation schedule still remains unknown. Moreover, the linear-quadratic model is being debated regarding high dose per fraction. Recent studies shown the radiation schedule is a critical factor in the immunomodulatory responses. The aim of this literature review was to discuss the dose–effect relation in brain metastases treated by stereotactic radiosurgery accounting for fractionation and technical considerations. Efficacy and toxicity data were analyzed in the light of recent published data. Only retrospective and heterogeneous data were available. We attempted to present the relevant data with caution. A BED10 of 40 to 50 Gy seems associated with a 12-month local control rate >70%. A BED10 of 50 to 60 Gy seems to achieve a 12-month local control rate at least of 80% at 12 months. In the brain metastases radiosurgery series, for single-fraction schedule, a V12 Gy < 5 to 10 cc was associated to 7.1–22.5% radionecrosis rate. For three-fractions schedule, V18 Gy < 26–30 cc, V21 Gy < 21 cc and V23 Gy < 5–7 cc were associated with about 0–14% radionecrosis rate. For five-fractions schedule, V30 Gy < 10–30 cc, V 28.8 Gy < 3–7 cc and V25 Gy < 16 cc were associated with about 2–14% symptomatic radionecrosis rate. There are still no prospective trials comparing radiosurgery to fractionated stereotactic irradiation.
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Affiliation(s)
- Maxime Loo
- Radiotherapy Department, University Cancer Institute of Toulouse—Oncopôle, 31100 Toulouse, France; (J.A.K.); (E.M.); (J.K.)
- Correspondence:
| | - Jean-Baptiste Clavier
- Radiotherapy Department, Strasbourg Europe Cancer Institute (ICANS), 67033 Strasbourg, France;
| | - Justine Attal Khalifa
- Radiotherapy Department, University Cancer Institute of Toulouse—Oncopôle, 31100 Toulouse, France; (J.A.K.); (E.M.); (J.K.)
| | - Elisabeth Moyal
- Radiotherapy Department, University Cancer Institute of Toulouse—Oncopôle, 31100 Toulouse, France; (J.A.K.); (E.M.); (J.K.)
| | - Jonathan Khalifa
- Radiotherapy Department, University Cancer Institute of Toulouse—Oncopôle, 31100 Toulouse, France; (J.A.K.); (E.M.); (J.K.)
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Yusuf M, Rattani A, Gaskins J, Oliver AL, Mandish SF, Burton E, May ME, Williams B, Ding D, Sharma M, Miller D, Woo S. Stereotactic radiosurgery for melanoma brain metastases: dose-size response relationship in the era of immunotherapy. J Neurooncol 2021; 156:163-172. [PMID: 34807342 PMCID: PMC8606626 DOI: 10.1007/s11060-021-03899-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 11/11/2021] [Indexed: 10/26/2022]
Abstract
PURPOSE/OBJECTIVE(S) To determine, for intact melanoma brain metastases (MBM) treated with single-fraction stereotactic radiosurgery (SRS), whether planning parameter peripheral dose per lesion diameter (PDLDm, Gy/mm) and lesion control (LC) differs with versus without immunotherapy (IO). MATERIALS/METHODS We performed a retrospective analysis of patients with intact MBM treated with SRS from 2008 to 2019. Cox-frailty models were constructed to include confounders selected by penalized Cox regression models with a LASSO selector. Interaction effect testing was used to determine whether a significant effect between IO and PDLDm could be demonstrated with respect to LC. RESULTS The study cohort comprised 67 patients with 244 MBMs treated with SRS (30 patients with 122 lesions treated with both SRS and IO) were included. The logarithm of PDLDm was selected as a predictor of LC (HR 0.307, 95% CI 0.098-0.441), adjusting for IO receipt (HR 0.363, 95% CI 0.108-1.224). Interaction effect testing demonstrated a differential effect of PDLDm by IO receipt, with respect to LC (p = 0.048). Twelve-month LC rates for a 7.5 mm lesion receiving SRS (18 Gy) with IO versus without IO were 87.8% (95% CI 69.0-98.3%) versus 79.8% (95% CI 55.1-93.8%) respectively. CONCLUSION PDLDm predicted LC in patients with small MBMs treated with single-fraction SRS. We found a differential effect of dose per lesion size and LC by immunotherapy receipt. Future studies are needed to determine whether lower doses of single-fraction SRS afford similarly effective LC for patients with small MBMs receiving immunotherapy.
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Affiliation(s)
- Mehran Yusuf
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Abbas Rattani
- Department of Radiation Oncology, School of Medicine, University of Louisville Hospital, 529 S. Jackson St, Louisville, KY, 40202, USA.
| | - Jeremy Gaskins
- Department of Bioinformatics and Biostatistics, University of Louisville, Louisville, KY, USA
| | | | - Steven F Mandish
- Department of Radiation Oncology, School of Medicine, University of Louisville Hospital, 529 S. Jackson St, Louisville, KY, 40202, USA
| | - Eric Burton
- Neuro-Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Michael E May
- Department of Radiation Oncology, School of Medicine, University of Louisville Hospital, 529 S. Jackson St, Louisville, KY, 40202, USA
| | - Brian Williams
- Department of Neurosurgery, University of Louisville Hospital, Louisville, KY, USA
| | - Dale Ding
- Department of Neurosurgery, University of Louisville Hospital, Louisville, KY, USA
| | - Mayur Sharma
- Department of Neurosurgery, University of Louisville Hospital, Louisville, KY, USA
| | - Donald Miller
- Department of Medical Oncology, University of Louisville Hospital, Louisville, KY, USA
| | - Shiao Woo
- Department of Radiation Oncology, School of Medicine, University of Louisville Hospital, 529 S. Jackson St, Louisville, KY, 40202, USA
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20
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Cui T, Zhou Y, Yue NJ, Vergalasova I, Zhang Y, Zhu J, Nie K. Optimization of treatment isocenter location in single-isocenter LINAC-based stereotactic radiosurgery for management of multiple brain metastases. Med Phys 2021; 48:7632-7640. [PMID: 34655249 DOI: 10.1002/mp.15294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 09/20/2021] [Accepted: 10/06/2021] [Indexed: 11/06/2022] Open
Abstract
PURPOSE Single-isocenter linear accelerator (LINAC)-based stereotactic radiosurgery (SRS) has become a promising treatment technique for the management of multiple brain metastases. Because of the high prescription dose and steep dose gradient, SRS plans are sensitive to geometric errors, resulting in loss of target coverage and suboptimal local tumor control. Current planning techniques rely on adding a uniform and isotropic setup margin to all gross tumor volumes (GTVs) to account for rotational uncertainties. However, this setup margin may be insufficient, since the magnitude of rotational uncertainties varies and is dependent upon the distance between a GTV and the isocenter. In this study, we designed a framework to determine the optimal isocenter of a single-isocenter SRS plan for multiple brain metastases using stochastic optimization to mitigate potential errors resulting from rotational uncertainties. METHODS Planning target volumes (PTVs), defined as GTVs plus a 1-mm margin following common SRS planning convention, were assumed to be originally treated with a prescription dose and therefore covered by the prescription isodose cloud. The dose distribution, including the prescription isodose, was considered invariant assuming small rotations throughout the study. A stochastic optimization scheme was developed to determine the location of the optimal isocenter, so that the prescription dose coverage of rotated GTVs, equivalent to the intersecting volumes between the rotated GTVs and original PTVs, was maximized for any random small rotations about the isocenter. To evaluate the coverage of GTVs, the expected V 100 % undergoing random rotations was approximated as the sample average V 100 % undergoing a predetermined number of rotations. The expected V 100 % of each individual GTV and total GTVs was then compared between the plans using the optimal isocenter and the center-of-mass (CoM), respectively. RESULTS Twenty-two patients previously treated for multiple brain metastases in a single institute were included in this retrospective study. Each patient was initially treated for more than three brain metastases (mean: 7.6; range: 3-15) with the average GTV volume of 0.89 cc (range: 0.03-11.78 cc). The optimal isocenter found for each patient was significantly different from the CoM, with the average Euclidean distance between the optimal isocenter and the CoM being 4.36 ± 2.59 cm. The dose coverage to GTVs was also significantly improved (paired t-test; p < 0.001) when the optimal isocenter was used, with the average V 100 % of total GTVs increasing from 87.1% (standard deviation as std: 11.7%; range: 39.9-98.2%) to 94.2% (std: 5.4%; range: 77.7-99.4%). The volume of a GTV was positively correlated with the expected V 100 % regardless of the isocenter used (Spearman coefficient: ρ = 0.66 ; p < 0.001). The distance between a GTV and the isocenter was negatively correlated with the expected V 100 % when the CoM was used ( ρ = - 0.21 ; p = 0.004), however no significant correlation was found when the optimal isocenter was used ( ρ = - 0.11 ; p = 0.137). CONCLUSION The proposed framework provides an effective approach to determine the optimal isocenter of single-isocenter LINAC-based SRS plans for multiple brain metastases. The implementation of the optimal isocenter results in SRS plans with consistently higher target coverage despite potential rotational uncertainties, and therefore significantly improves SRS plan robustness against random rotational uncertainties.
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Affiliation(s)
- Taoran Cui
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Yongkang Zhou
- Department of Radiation Oncology, Zhongshan Hospital, Shanghai, China
| | - Ning J Yue
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Irina Vergalasova
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Yin Zhang
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Jiahua Zhu
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Ke Nie
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
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Retrospective analysis of portal dosimetry pre-treatment quality assurance of intracranial SRS/SRT VMAT treatment plans. JOURNAL OF RADIOTHERAPY IN PRACTICE 2021. [DOI: 10.1017/s146039692100042x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Background:
The complexity associated with the treatment planning and delivery of stereotactic radiosurgery (SRS) or stereotactic radiotherapy (SRT) volumetric modulated arc therapy (VMAT) plans which employs continuous dynamic modulation of dose rate, field aperture and gantry speed necessitates diligent pre-treatment patient-specific quality assurance (QA). Numerous techniques for pre-treatment VMAT treatment plans QA are currently available with the aid of several different devices including the electronic portal imager (EPID). Although several studies have provided recommendations for gamma criteria for VMAT pre-treatment QA, there are no specifics for SRS/SRT VMAT QA. Thus, we conducted a study to evaluate intracranial SRS/SRT VMAT QA to determine clinical action levels for gamma criteria based on the institutional estimated means and standard deviations.
Materials and methods:
We conducted a retrospective analysis of 118 EPID patient-specific pre-treatment QA dosimetric measurements of 47 brain SRS/SRT VMAT treatment plans using the integrated Varian solution (RapidArcTM planning, EPID and Portal dosimetry system) for planning, delivery and EPID QA analysis. We evaluated the maximum gamma (γmax), average gamma (γave) and percentage gamma passing rate (%GP) for different distance-to-agreement/dose difference (DTA/DD) criteria and low-dose thresholds.
Results:
The gamma index analysis shows that for patient-specific SRS/SRT VMAT QA with the portal dosimetry, the mean %GP is ≥98% for 2–3 mm/1–3% and Field+0%, +5% and +10% low-dose thresholds. When applying stricter spatial criteria of 1 mm, the mean %GP is >90% for DD of 2–3% and ≥88% for DD of 1%. The mean γmax ranges: 1·32 ± 1·33–2·63 ± 2·35 for 3 mm/1–3%, 1·57 ± 1·36–2·87 ± 2·29 for 2 mm/1–3% and 2·36 ± 1·83–3·58 ± 2·23 for 1 mm/1–3%. Similarly the mean γave ranges: 0·16 ± 0·06–0·19 ± 0·07 for 3 mm/1–3%, 0·21 ± 0·08–0·27 ± 0·10 for 2 mm/1–3% and 0·34 ± 0·14–0·49 ± 0·17 for 1 mm/1–3%. The mean γmax and mean γave increase with increased DTA and increased DD for all low-dose thresholds.
Conclusions:
The establishment of gamma criteria local action levels for SRS/SRT VMAT pre-treatment QA based on institutional resources is imperative as a useful tool for standardising the evaluation of EPID-based patient-specific SRS/SRT VMAT QA. Our data suggest that for intracranial SRS/SRT VMAT QA measured with the EPID, a stricter gamma criterion of 1 mm/2% or 1 mm/3% with ≥90% %GP could be used while still maintaining an in-control QA process with no extra burden on resources and time constraints.
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Myrehaug S, Hudson J, Soliman H, Ruschin M, Tseng CL, Detsky J, Husain Z, Keith J, Atenafu EG, Maralani P, Heyn C, Das S, Lipsman N, Sahgal A. Hypofractionated Stereotactic Radiation Therapy for Intact Brain Metastases in 5 Daily Fractions: Effect of Dose on Treatment Response. Int J Radiat Oncol Biol Phys 2021; 112:342-350. [PMID: 34537313 DOI: 10.1016/j.ijrobp.2021.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/13/2021] [Accepted: 09/01/2021] [Indexed: 01/09/2023]
Abstract
PURPOSE Multileaf collimator (MLC) linear accelerator (Linac)-based hypofractionated stereotactic radiation therapy (HSRT) is increasingly used not only for large brain metastases or those adjacent to critical structures but also for those metastases that would otherwise be considered for single-fraction radiosurgery (SRS). However, data on outcomes in general are limited, and there is a lack of understanding regarding optimal dosing. Our aim was to report mature image-based outcomes for MLC-Linac HSRT with a focus on clinical and dosimetric factors associated with local failure (LF). METHODS AND MATERIALS A total of 220 patients with 334 brain metastases treated with HSRT were identified. All patients were treated using a 5-fraction daily regimen and were followed with clinical evaluation and volumetric magnetic resonance imaging every 2 to 3 months. Overall survival and progression-free survival were calculated using the Kaplan-Meier method, with LF determined using Fine and Gray's competing risk method. Predictive factors were identified using Cox regression multivariate analysis. RESULTS Median follow-up was 10.8 months. Median size of treated metastasis was 1.9 cm; 60% of metastases were <2 cm in size. The median total dose was 30 Gy in 5 fractions; 36% of the cohort received <30 Gy. The median time to LF and 12-month cumulative incidence of LF was 8.5 months and 23.8%, respectively. Median time to death and 12-month overall survival rates were 11.8 months and 48.2%, respectively. Fifty-two metastases (15.6%) had an adverse radiation effect, of which 32 (9.5%) were symptomatic necrosis. Multivariable analysis identified worse LF in patients who received a total dose of <30 Gy (hazard ratio, 1.62; P = .03), with LF at 6 and 12 months of 13% and 33% for patients treated with <30 Gy versus 5% and 19% for patients treated with >30 Gy. Exploratory analysis demonstrated a dose-response effect observed in all histologic types, including among breast cancer subtypes. CONCLUSION Optimal local control is achieved with HSRT of ≥30 Gy in 5 daily fractions, independent of tumor volume and histology, with an acceptable risk of radiation necrosis.
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Affiliation(s)
- Sten Myrehaug
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada.
| | - John Hudson
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Hany Soliman
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Mark Ruschin
- Department of Medical Physics, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Chia-Lin Tseng
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Jay Detsky
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Zain Husain
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Julia Keith
- Department of Laboratory Medicine and Molecular Diagnostics, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Eshetu G Atenafu
- Department of Biostatistics, University Health Network, Ontario, Canada
| | - Pejman Maralani
- Department of Medical Imaging, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Chris Heyn
- Department of Medical Imaging, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Sunit Das
- Department of Neurosurgery, St. Michaels Hospital, Ontario, Canada
| | - Nir Lipsman
- Department of Neurosurgery, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - Arjun Sahgal
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
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23
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Hypofractionated versus single-fraction stereotactic radiosurgery for the treatment of brain metastases: A systematic review and meta-analysis. Clin Neurol Neurosurg 2021; 206:106645. [PMID: 33984752 DOI: 10.1016/j.clineuro.2021.106645] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE This systematic review and meta-analysis aimed to synthesize the latest evidence on the hypofractionated stereotactic radiosurgery (HF-SRS) compared to single-fraction stereotactic radiosurgery (SF-SRS) for the treatment of brain metastases. METHODS We systematically searched PubMed, Scopus, EuropePMC, ProQuest, and Cochrane Central Databases. Original research articles investigating patients with brain metastasis receiving HF-SRS or SF-SRS reporting the local control/failure and/or radionecrosis during follow-up were included. RESULTS There were 1100 patients from 7 studies. 616 lesions were allocated to HF-SRS group and 777 lesions were allocated to SF-SRS group. Pooled rate of local control was 88% (95% CI 84%, 91%) in HF-SRS group and 81% (95% CI 74%, 88%) in the SF-SRS groups. Local control was higher in patients receiving HF-SRS compared to SF-SRS (OR 1.53 [95% CI 1.08, 2.18], p = 0.018; I2: 0%). Pooled rate of radionecrosis was 7% (95% CI 3%, 12%) in HF-SRS group and 15% (95% CI 8%, 23%) in the SF-SRS groups. Similar rate of radionecrosis was observed in both HF-SRS and SF-SRS (OR 0.82 [95% CI 0.31, 2.21], p = 0.698; I2: 61.3%). Grading of Recommendations, Assessment, Development and Evaluations (GRADE) qualification showed a low level of certainty for the higher local control in patients receiving HF-SRS compared to SF-SRS and a very low level of certainty for similar risk of radionecrosis between the two groups. CONCLUSION This meta-analysis showed that HF-SRS was associated with higher local control and similar rate of radionecrosis compared to SF-SRS in patients with brain metastases. PROSPERO ID CRD42020210469.
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Breast cancer subtype predicts clinical outcomes after stereotactic radiation for brain metastases. J Neurooncol 2021; 152:591-601. [PMID: 33742358 DOI: 10.1007/s11060-021-03735-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/09/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE We investigated the prognostic ability of tumor subtype for patients with breast cancer brain metastases (BCBM) treated with stereotactic radiation (SRT). METHODS This is a retrospective review of 181 patients who underwent SRT to 664 BCBM from 2004 to 2019. Patients were stratified by subtype: hormone receptor (HR)-positive, HER2-negative (HR+/HER2-), HR-positive, HER2-positive (HR+/HER2+), HR-negative, HER2-positive (HR-/HER2+), and triple negative (TN). The Kaplan-Meier method was used to calculate overall survival (OS), local control (LC), and distant intracranial control (DIC) from the date of SRT. Multivariate analysis (MVA) was conducted using the Cox proportional hazards model. RESULTS Median follow up from SRT was 11.4 months. Of the 181 patients, 47 (26%) were HR+/HER2+, 30 (17%) were HR-/HER2+, 60 (33%) were HR+/HER2-, and 44 (24%) were TN. Of the 664 BCBMs, 534 (80%) received single fraction stereotactic radiosurgery (SRS) with a median dose of 21 Gy (range 12-24 Gy), and 130 (20%) received fractionated stereotactic radiation therapy (FSRT), with a median dose of 25 Gy (range 12.5-35 Gy) delivered in 3 to 5 fractions. One-year LC was 90%. Two-year DIC was 35%, 23%, 27%, and 16% (log rank, p = 0.0003) and 2-year OS was 54%, 47%, 24%, and 12% (log rank, p < 0.0001) for HR+/HER2+, HR-/HER2+, HR+/HER2-, and TN subtypes, respectively. On MVA, the TN subtype predicted for inferior DIC (HR 1.62, 95% CI 1.00-2.60, p = 0.049). The modified breast-Graded Prognostic Assessment (GPA) significantly predicted DIC and OS (both p < 0.001). CONCLUSIONS Subtype is prognostic for OS and DIC for patients with BCBM treated with SRT.
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Samanci Y, Karakose F, Senyurek S, Peker S. Single-fraction versus hypofractionated gamma knife radiosurgery for small metastatic brain tumors. Clin Exp Metastasis 2021; 38:305-320. [PMID: 33733707 DOI: 10.1007/s10585-021-10086-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 03/08/2021] [Indexed: 12/31/2022]
Abstract
Stereotactic radiosurgery (SRS) has become a standard of care for the treatment of metastatic brain tumors (METs). Although a better balance of tumor control and toxicity of hypofractionated SRS (hfSRS) compared with single-fraction SRS (sfSRS) was demonstrated in large METs, there is no data comparing two approaches for small METs (< 4 cm3). It was aimed to compare clinical outcomes between sfSRS versus hfSRS Gamma Knife radiosurgery (GKRS) in a series of patients with unresected, small METs. Patients (n = 208) treated with sfGKRS or hfGKRS between June 2017 and May 2020 were retrospectively examined in a single center. The co-primary endpoints of local control (LC) and toxicity were estimated by applying the Kaplan-Meier method. Multivariate analysis using Cox proportional hazards (HR) modeling was used to assess the effect of independent variables on the outcomes. The actuarial LC rate was 99.7% at six months and 98.8% at 18 months in the sfGKRS group, and 99.4% and 94.3% in the hfGKRS group (p = 0.089), respectively. In multivariate analysis, MET volume (p = 0.023, HR 2.064) and biologically effective dose (BED10) (p < 0.0001, HR 0.753) was associated with LC. In total, treatment-related toxicity was observed in 13 (8.7%) patients during a median period of 10 weeks (range 1-31). Radiation necrosis was observed in four patients (1.9%), and all patients were in the sfGKRS group (p = 0.042). Only the maximum dose was associated with toxicity (p = 0.032, HR 1.047). Our current results suggest that hfGKRS is advantageous and beneficial also in patients with unresected, small METs.
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Affiliation(s)
- Yavuz Samanci
- Department of Neurosurgery, Koç University Hospital, Istanbul, Turkey
| | - Fatih Karakose
- Department of Radiation Oncology, Koç University Hospital, Istanbul, Turkey
| | - Sukran Senyurek
- Department of Radiation Oncology, Koç University Hospital, Istanbul, Turkey
| | - Selcuk Peker
- Department of Neurosurgery, School of Medicine, Koç University, Istanbul, Turkey.
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Samanci Y, Sisman U, Altintas A, Sarioglu S, Sharifi S, Atasoy Aİ, Bolukbasi Y, Peker S. Hypofractionated frameless gamma knife radiosurgery for large metastatic brain tumors. Clin Exp Metastasis 2021; 38:31-46. [PMID: 33389335 DOI: 10.1007/s10585-020-10068-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/29/2020] [Indexed: 12/30/2022]
Abstract
Hypofractionated stereotactic radiosurgery has become an alternative for metastatic brain tumors (METs). We aimed to analyze the efficacy and safety of frameless hypofractionated Gamma Knife radiosurgery (hfGKRS) in the management of unresected, large METs. All patients who were managed with hfGKRS for unresected, large METs (> 4 cm3) between June 2017 and June 2020 at a single center were reviewed in this retrospective study. Local control (LC), progression-free survival (PFS), overall survival (OS), and toxicities were investigated. A total of 58 patients and 76 METs with regular follow-up were analyzed. LC rate was 98.5% at six months, 96.0% at one year, and 90.6% at 2 years during a median follow-up of 12 months (range, 2-37). The log-rank test indicated no difference in the distribution of LC for any clinical or treatment variable. PFS was 86.7% at 6 months, 66.6% at 1 year, and 58.5% at 2 years. OS was 81% at 6 months, 63.6% at one year, and 50.7% at 2 years. On the log-rank test, clinical parameters such as control status of primary cancer, presence of extracranial metastases, RTOG-RPA class, GPA group, and ds-GPA group were significantly associated with PFS and OS. Patients presented with grade 1 (19.0%), grade 2 (3.5%) and grade 3 (5.2%) side effects. Radiation necrosis was not observed in any patients. Our current results suggest that frameless hfGKRS for unresected, large METs is a rational alternative in selected patients with promising results.
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Affiliation(s)
- Yavuz Samanci
- Department of Neurosurgery, Koç University Hospital, Istanbul, Turkey
| | - Uluman Sisman
- School of Medicine, Koç University, Istanbul, Turkey
| | | | | | | | - Ali İhsan Atasoy
- Department of Radiation Oncology, Koç University Hospital, Istanbul, Turkey
| | - Yasemin Bolukbasi
- Department of Radiation Oncology, School of Medicine, Koç University, Istanbul, Turkey
| | - Selcuk Peker
- Department of Neurosurgery, School of Medicine, Koç University, Davutpasa Caddesi No:4, 34010, Zeytinburnu/İstanbul, Turkey.
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Habbous S, Forster K, Darling G, Jerzak K, Holloway CMB, Sahgal A, Das S. Incidence and real-world burden of brain metastases from solid tumors and hematologic malignancies in Ontario: a population-based study. Neurooncol Adv 2021; 3:vdaa178. [PMID: 33585818 PMCID: PMC7872008 DOI: 10.1093/noajnl/vdaa178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Although intracranial metastatic disease (IMD) is a frequent complication of cancer, most cancer registries do not capture these cases. Consequently, a data-gap exists, which thwarts system-level quality improvement efforts. The purpose of this investigation was to determine the real-world burden of IMD. METHODS Patients diagnosed with a non-CNS cancer between 2010 and 2018 were identified from the Ontario Cancer Registry. IMD was identified by scanning hospital administrative databases for cranial irradiation or coding for a secondary brain malignancy (ICD-10 code C793). RESULTS 25,478 of 601,678 (4.2%) patients with a diagnosis of primary cancer were found to have IMD. The median time from primary cancer diagnosis to IMD was 5.2 (0.7, 15.4) months and varied across disease sites, for example, 2.1 months for lung, 7.3 months for kidney, and 22.8 months for breast. Median survival following diagnosis with IMD was 3.7 months. Lung cancer accounted for 60% of all brain metastases, followed by breast cancer (11%) and melanoma (6%). More advanced stage at diagnosis and younger age were associated with a higher likelihood of developing IMD (P < .0001). IMD was also associated with triple-negative breast cancers and ductal histology (P < .001), and with small-cell histology in patients with lung cancer (P < .0001). The annual incidence of IMD was 3,520, translating to 24.2 per 100,000 persons. CONCLUSION IMD represents a significant burden in patients with systemic cancers and is a significant cause of cancer mortality. Our findings support measures to actively capture incidents of brain metastasis in cancer registries.
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Affiliation(s)
- Steven Habbous
- Ontario Health (Cancer Care Ontario), Toronto, Ontario, Canada
| | | | - Gail Darling
- Ontario Health (Cancer Care Ontario), Toronto, Ontario, Canada
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Division of Thoracic Surgery, Toronto General Hospital, Toronto, Ontario, Canada
| | - Katarzyna Jerzak
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Division of Medical Oncology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Claire M B Holloway
- Ontario Health (Cancer Care Ontario), Toronto, Ontario, Canada
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Arjun Sahgal
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Sunit Das
- Ontario Health (Cancer Care Ontario), Toronto, Ontario, Canada
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Division of Neurosurgery, St. Michael’s Hospital, Toronto, Ontario, Canada
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Diamond BH, Jairam V, Zuberi S, Li JY, Marquis TJ, Rutter CE, Park HS. Linear accelerator-based single-fraction stereotactic radiosurgery versus hypofractionated stereotactic radiotherapy for intact and resected brain metastases up to 3 cm: A multi-institutional retrospective analysis. JOURNAL OF RADIOSURGERY AND SBRT 2021; 7:179-187. [PMID: 33898081 PMCID: PMC8055233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
INTRODUCTION Single-fraction stereotactic radiosurgery (SF-SRS) is typically used to provide local control of brain metastases. Recently, hypofractionated stereotactic radiotherapy (HF-SRT) has been utilized for large brain metastases. Data comparing these two modalities are limited for brain metastases ≤3 cm. METHODS Patients with brain metastases receiving linear accelerator-based SF-SRS or HF-SRT were identified at three institutions. Local progression-free survival (LPFS), intracranial progression-free survival (ICPFS), overall survival (OS), and radionecrosis-free survival (RNFS) were determined from time of treatment. RESULTS 108 patients (76 intact, 32 resected) with 184 brain metastases (142 intact, 42 resected) were included. There were no significant differences between SF-SRS and HF-SRT for intact metastases in 1-year LPFS (62.8% vs. 58.5%, p=0.631), ICPFS (56.9% vs. 55.3%, p=0.300), and OS (71.6% vs. 70.6%, p=0.096), or for resected metastases in 1-year LPFS (67.3% vs. 57.8%, p=0.288), ICPFS (64.8% vs. 57%, p=0.291), and OS (64.8% vs. 66.1%, p=0.603). There were also no significant differences in 1-year RNFS between SF-SRS and HF-SRT (92% vs. 92%, p=0.325). CONCLUSIONS There were no significant differences in LPFS, ICPFS, OS, and RNFS between SF-SRS and HF-SRT for brain metastases ≤3 cm suggesting SF-SRS may be preferred due to similar outcomes and reduced number of fractions.
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Affiliation(s)
- Brett H. Diamond
- Tufts University School of Medicine, Department of Radiation Oncology, Boston, MA 02111, USA
| | - Vikram Jairam
- Yale School of Medicine, Department of Therapeutic Radiology, New Haven, CT 06511, USA
| | - Shaharyar Zuberi
- University of Connecticut School of Medicine, Department of Radiation Oncology, Farmington, CT 06032, USA
| | - Jessie Y. Li
- Yale School of Medicine, Department of Therapeutic Radiology, New Haven, CT 06511, USA
| | - Timothy J. Marquis
- Yale School of Medicine, Department of Medicine, New Haven, CT 06511, USA
| | - Charles E. Rutter
- University of Connecticut School of Medicine, Department of Radiation Oncology, Farmington, CT 06032, USA
- Hartford HealthCare, Department of Radiation Oncology, Hartford, CT 06106, USA
| | - Henry S. Park
- Tufts University School of Medicine, Department of Radiation Oncology, Boston, MA 02111, USA
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Blamek S, Stankiewicz M, Maciejewski B. Clinical and volumetric predictors of local control after robotic stereotactic radiosurgery for cerebral metastases: active systemic disease may affect local control in the brain. Radiol Oncol 2020; 55:82-87. [PMID: 33885238 PMCID: PMC7877264 DOI: 10.2478/raon-2020-0065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/30/2020] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND The aim of the study was to assess the association between physical and biological dose normalized to volume of the metastatic tumor as well as clinical factors with local control in patients with brain metastases who underwent robotic stereotactic radiosurgery. PATIENTS AND METHODS A cohort of 69 patients consecutively treated with robotic radiosurgery between 2011 and 2016 was analyzed. The patients were treated with either single fraction radiosurgery or hypofractionated regimens. Biologically effective dose (BED) was calculated assuming alpha/beta value = 10 and both physical dose and BED were normalized to the tumor volume to allow dose-volume effect evaluation. Moreover, clinical and treatment-related variables were evaluated to asses association with local control. RESULTS A total of 133 tumors were irradiated and their volumes ranged between 0.001 and 46.99 cm3. Presence of extracranial progression was associated with worse local control whereas higher total dose, BED10 > 59 Gy and single metastasis predicted statistically significantly better local outcome. BED10/cm3 > 36 Gy, and BED2 > 60 Gy negatively affected local control in univariate analysis. In multivariate analysis performed on all these variables, presence of a single metastasis, BED10 > 59 Gy and extracranial progression retained their significance. Excluding a priori the BED2/ cm3 parameter resulted with a Cox model confirming significance of all remaining variables. CONCLUSIONS Hypofractionated treatment schemes have similar efficiency to single fraction treatment in terms of local control and the effect depends on BED irrespective of fractionation schedule. Effective control of extracranial sites of the disease is associated with higher probability of local control in the brain which in turn is consistently lower in patients with multiple lesions.
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Affiliation(s)
- Sławomir Blamek
- Department of Radiotherapy, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, Poland
| | - Magdalena Stankiewicz
- Department of Brachytherapy, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, Poland
| | - Bogusław Maciejewski
- Department of Radiotherapy, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, Poland
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