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Boelders SM, Gehring K, Postma EO, Rutten GJM, Ong LLS. Cognitive functioning in untreated glioma patients: The limited predictive value of clinical variables. Neuro Oncol 2024; 26:670-683. [PMID: 38039386 PMCID: PMC10995520 DOI: 10.1093/neuonc/noad221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Indexed: 12/03/2023] Open
Abstract
BACKGROUND Previous research identified many clinical variables that are significantly related to cognitive functioning before surgery. It is not clear whether such variables enable accurate prediction for individual patients' cognitive functioning because statistical significance does not guarantee predictive value. Previous studies did not test how well cognitive functioning can be predicted for (yet) untested patients. Furthermore, previous research is limited in that only linear or rank-based methods with small numbers of variables were used. METHODS We used various machine learning models to predict preoperative cognitive functioning for 340 patients with glioma across 18 outcome measures. Predictions were made using a comprehensive set of clinical variables as identified from the literature. Model performances and optimized hyperparameters were interpreted. Moreover, Shapley additive explanations were calculated to determine variable importance and explore interaction effects. RESULTS Best-performing models generally demonstrated above-random performance. Performance, however, was unreliable for 14 out of 18 outcome measures with predictions worse than baseline models for a substantial number of train-test splits. Best-performing models were relatively simple and used most variables for prediction while not relying strongly on any variable. CONCLUSIONS Preoperative cognitive functioning could not be reliably predicted across cognitive tests using the comprehensive set of clinical variables included in the current study. Our results show that a holistic view of an individual patient likely is necessary to explain differences in cognitive functioning. Moreover, they emphasize the need to collect larger cross-center and multimodal data sets.
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Affiliation(s)
- Sander M Boelders
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
- Department of Cognitive Sciences and AI, Tilburg University, Tilburg, The Netherlands
| | - Karin Gehring
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
- Department of Cognitive Neuropsychology, Tilburg University, Tilburg, The Netherlands
| | - Eric O Postma
- Department of Cognitive Sciences and AI, Tilburg University, Tilburg, The Netherlands
| | - Geert-Jan M Rutten
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
| | - Lee-Ling S Ong
- Department of Cognitive Sciences and AI, Tilburg University, Tilburg, The Netherlands
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Loughan AR, Lanoye A, Willis KD, Fox A, Ravyts SG, Zukas A, Kim Y. Telehealth group Cognitive-Behavioral Therapy for Insomnia (CBT-I) in primary brain tumor: Primary outcomes from a single-arm phase II feasibility and proof-of-concept trial. Neuro Oncol 2024; 26:516-527. [PMID: 37796017 PMCID: PMC10911999 DOI: 10.1093/neuonc/noad193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND Cognitive-Behavioral Therapy for Insomnia (CBT-I), the frontline treatment for insomnia, has yet to be evaluated among patients with primary brain tumors (PwPBT) despite high prevalence of sleep disturbance in this population. This study aimed to be the first to evaluate the feasibility, safety, and acceptability of implementing telehealth group CBT-I as well as assessing preliminary changes in subjective sleep metrics in PwPBT from baseline to follow-up. METHODS Adult PwPBT were recruited to participate in six 90-min telehealth group CBT-I sessions. Feasibility was assessed by rates of screening, eligibility, enrollment, and data completion. Safety was measured by participant-reported adverse events. Acceptability was assessed by retention, session attendance, satisfaction, recommendation of program to others, and qualitative feedback. Participant subjective insomnia severity, sleep quality, and fatigue were assessed at baseline, post intervention, and 3-month follow-up. RESULTS Telehealth group CBT-I was deemed safe. Following the 76% screening rate, 85% of interested individuals met study eligibility and 98% enrolled (N = 44). Ninety-one percent of enrolled participants completed measures at baseline, 79% at post intervention, and 73% at 3-month follow-up. Overall, there was an 80% retention rate for the 6-session telehealth group CBT-I intervention. All participants endorsed moderate-to-strong treatment adherence and 97% reported improved sleep. Preliminary pre-post intervention effects demonstrated improvements in subjective insomnia severity, sleep quality, and fatigue with large effect sizes. These effects were maintained at follow-up. CONCLUSIONS Results of this proof-of-concept trial indicate that telehealth group CBT-I is feasible, safe, and acceptable among PwPBT, providing support for future randomized controlled pilot trials.
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Affiliation(s)
- Ashlee R Loughan
- Department of Neurology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
- Massey Comprehensive Cancer Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Autumn Lanoye
- Massey Comprehensive Cancer Center, Virginia Commonwealth University, Richmond, Virginia, USA
- Department of Internal Medicine, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Kelcie D Willis
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Amber Fox
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Scott G Ravyts
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, Maryland, USA
| | - Alicia Zukas
- Department of Neurosurgery, Medical College of South Carolina, Charleston, South Carolina, USA
| | - Youngdeok Kim
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, Virginia, USA
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Caponnetto P, Schilirò G, Maglia M, Prezzavento GC, Baeken C, Quattropani MC. Psychological and neuropsychological clinical impact in brain cancer patients and evidence-based psychological intervention: a systematic review of the literature. Health Psychol Res 2024; 12:91408. [PMID: 38249780 PMCID: PMC10796271 DOI: 10.52965/001c.91408] [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: 09/26/2023] [Accepted: 10/30/2023] [Indexed: 01/23/2024] Open
Abstract
Background Cancer patients may suffer from psychological disorders related to their health condition. Various medical, surgical, and interventional procedures, alongside the distinct tumor localization, have been linked to an elevated predisposition towards psychological disorders, including but not limited to depression, anxiety, post-traumatic stress disorder (PTSD), and cognitive impairments. Objective To systematically review the literature on neurocognitive rehabilitation of patients before and after brain cancer. Methods The systematic review was performed according to the PRISMA 2020 guidelines for the systematic review of the PRISMA Group. The literature search was conducted from February 2022 to December 2022 in the databases of PubMed, APA PsycNet, and Web of Science. The focus was on cognitive-behavioural treatments, with Goal Management Training (GMT), and also an app on the iPad- ReMind- that includes psychoeducation, strategy training, and retraining, and new technologies such as virtual reality, in patients with cognitive deficits after neurosurgery. Conclusions Overall, neurocognitive rehabilitation had an improvement on cancer patients and a recovery of executive and cognitive functions, a better quality of life, and psychological well-being.
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Affiliation(s)
- Pasquale Caponnetto
- Department of Educational Science University of Catania
- Centre of Excellence for the Acceleration of Harm Reduction (CoEAHR) University of Catania
| | | | - Marilena Maglia
- Department of Educational Science University of Catania
- Centre of Excellence for the Acceleration of Harm Reduction (CoEAHR) University of Catania
| | | | - Chris Baeken
- Department of Head and Skin, Ghent Experimental Psychiatry (GHEP) Lab Ghent University
- Department of Psychiatry Vrije Universiteit Brussel
- Department of Electrical Engineering Eindhoven University of Technology
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Vuori O, Kallio EL, Wikström A, Jokinen H, Hietanen M. Web-based psychoeducational interventions for managing cognitive impairment-a systematic review. Front Neurol 2023; 14:1249995. [PMID: 37780726 PMCID: PMC10535106 DOI: 10.3389/fneur.2023.1249995] [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: 06/29/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
Objective Web-based rehabilitation, a branch of telerehabilitation, is carried out over the internet, unrestricted by time or place. Even though web-based interventions have been reported as feasible and effective in cases of mood disorders, for example, such evidence on the effectiveness of web-based cognitive rehabilitation remains unclear. This systematic review summarizes current knowledge on web-based psychoeducational programs aiming to manage cognitive deficits in patients with diseases that affect cognition. Methods Using the Ovid database and the Web of Science, we systematically searched the Cochrane Database of Systematic Reviews, Medline, and PsycINFO to identify eligible studies. The review protocol (CRD42021257315) was pre-registered with the PROSPERO International Prospective Register of Systematic Reviews. The search was performed 10/13/2022. Two reviewers independently screened titles, abstracts, and full-texts, and extracted data for the selected studies. Two independent reviewers assessed the methodological quality. Results The search retrieved 6,487 articles. Four studies with different patient groups (stroke, traumatic brain injury, brain tumor, and cancer) met the inclusion criteria of this systematic review. The studies examined systematic cognition-focused psychoeducational rehabilitation programs in which the patient worked independently. Three studies found positive effects on subjective cognitive functions, executive functions, and self-reported memory. No effects were found on objective cognitive functions. However, the studies had methodological weaknesses (non-randomized designs, small sample sizes, vaguely described interventions). Overall, adherence and patient satisfaction were good/excellent. Conclusion Web-based cognitive intervention programs are a new approach to rehabilitation and patient education. The evidence, although scarce, shows that web-based interventions are feasible and support subjective cognitive functioning. However, the literature to date is extremely limited and the quality of the studies is weak. More research with high-quality study designs is needed. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=257315, identifier: CRD42021257315.
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Affiliation(s)
- Outi Vuori
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Division of Neuropsychology, HUS Neurocenter, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Eeva-Liisa Kallio
- Division of Neuropsychology, HUS Neurocenter, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Annamaria Wikström
- Division of Neuropsychology, HUS Neurocenter, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Hanna Jokinen
- Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Division of Neuropsychology, HUS Neurocenter, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Marja Hietanen
- Division of Neuropsychology, HUS Neurocenter, Helsinki University and Helsinki University Hospital, Helsinki, Finland
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Fauvet C, Villain M, Gatignol P. Repeated awake surgery and quality of life in patients with diffuse glioma: a systematic review and meta-analysis. Neurosurg Rev 2023; 46:156. [PMID: 37382692 DOI: 10.1007/s10143-023-02073-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/12/2023] [Accepted: 06/20/2023] [Indexed: 06/30/2023]
Abstract
Diffuse gliomas significantly affect patients' daily lives. Because of the high risk of recurrence and anaplasic transformation, repeated surgery can be proposed in awake condition to prolongs overall survival by limiting and reducing residual tumour volume. However, oncological interest alone is no longer sufficient due to the consequent increase in median survival, and quality of life is becoming an important issue in clinical decision-making. This systematic review focuses on the effects of repeated surgery in awake condition on the quality of life of adults with diffuse glioma through three parameters: return to work, presence of postoperative neurocognitive disorders, and occurrence of epileptic seizures. A systematic review of the last 20 years was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) standards. Summarized data from selected studies were processed quantitatively, using a meta-analysis process, with the Review Manager 5.4 software. Five databases (PubMed, Web of Science, Science Direct, Dimensions, and Embase) were used. Fifteen articles were selected for qualitative analysis and 11 for meta-analysis. One hundred and fifty-one patients (85%) returned to an active socio-professional life after repeated surgery, and 78 (41%) presented neurocognitive disorders in the immediate postoperative period, only 3% (n = 4) of them suffering from permanent disorders. One hundred and forty-nine (78%) participants were free of epileptic seizure after repeated surgery. This systematic review of the literature highlights the benefit of repeated surgery on the quality of life of patients with adult diffuse glioma.
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Affiliation(s)
| | - Marie Villain
- AP-HP, Service MPR, Pitié-Salpêtrière University Hospital, Paris, France.
- Speech Therapy Department, Sorbonne Université, Paris, France.
- Sorbonne Université, GRC No. 24, Handicap Moteur Et Cognitif & Réadaptation (HaMCRe) AP-HP, Sorbonne Université, 75013, Paris, France.
| | - Peggy Gatignol
- AP-HP, Service MPR, Pitié-Salpêtrière University Hospital, Paris, France
- Speech Therapy Department, Sorbonne Université, Paris, France
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale Et Clinique, Paris, France
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Spina S, Facciorusso S, Cinone N, Pellegrino R, Fiore P, Santamato A. Rehabilitation interventions for glioma patients: a mini-review. Front Surg 2023; 10:1137516. [PMID: 37396290 PMCID: PMC10313351 DOI: 10.3389/fsurg.2023.1137516] [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: 01/04/2023] [Accepted: 04/06/2023] [Indexed: 07/04/2023] Open
Abstract
Glioma is a group of tumors that originate from glial cells within the central nervous system and comprise 27% of all tumors and 80% of malignant tumors. With remarkable progress in surgical practices, chemotherapy, and radiation therapy, patients with glioma are experiencing greater survival times, which means they need more rehabilitative care. In fact, people with this condition may experience a variety of symptoms that can affect their functions and drastically reduce their quality of life. In fact, patients suffering from glioma has a distinctive symptom complex highlighting the requirement for customized care. Growing evidence shows that rehabilitation therapy can improve the functional prognosis and quality of life of glioma patients. However, there is limited evidence of the success of rehabilitation protocols designed specifically for individuals with glioma. It is essential to determine the most comprehensive rehabilitation programs as well as the sufficient resources, dosage, and duration. The goal of this mini-review was to classify and map rehabilitation interventions used to treat multiple disabling sequalae in individuals affected by glioma. We aim to provide a comprehensive overview of the rehabilitation protocols used for this population, so that clinicians have a guide to support treatment and an inspiration for further research. This document is intended to be a reference point for professionals involved in the management of adult patients with gliomas. Further exploration is needed to form improved care models for recognizing and addressing functional restrictions in this population.
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Affiliation(s)
- Stefania Spina
- Department of Medical and Surgical Sciences, Spasticity and Movement Disorders “ReSTaRt”, Unit Physical Medicine and Rehabilitation Section, University of Foggia, Foggia, Italy
| | - Salvatore Facciorusso
- Department of Medical and Surgical Sciences, Spasticity and Movement Disorders “ReSTaRt”, Unit Physical Medicine and Rehabilitation Section, University of Foggia, Foggia, Italy
- Department of Medical and Surgical Specialties and Dentistry, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Nicoletta Cinone
- Department of Medical and Surgical Sciences, Spasticity and Movement Disorders “ReSTaRt”, Unit Physical Medicine and Rehabilitation Section, University of Foggia, Foggia, Italy
| | - Raffaello Pellegrino
- Department of Scientific Research, Campus Ludes, Off-Campus Semmelweis University, Lugano, Switzerland
| | - Pietro Fiore
- Neurorehabilitation Unit, Istituti Clinici Scientifici Maugeri, IRCCS, Institute of Bari, Bari, Italy
| | - Andrea Santamato
- Department of Medical and Surgical Sciences, Spasticity and Movement Disorders “ReSTaRt”, Unit Physical Medicine and Rehabilitation Section, University of Foggia, Foggia, Italy
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Stark AL, Krayter S, Dockweiler C. Competencies required by patients and health professionals regarding telerehabilitation: A scoping review. Digit Health 2023; 9:20552076231218841. [PMID: 38107985 PMCID: PMC10722929 DOI: 10.1177/20552076231218841] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 11/20/2023] [Indexed: 12/19/2023] Open
Abstract
Background Telerehabilitation offers patients alternative access to therapy and has become more prominent during the COVID-19 pandemic. Despite the increasing attractiveness of such programs, there are research gaps regarding the required competencies in the demand-oriented technology use in rehabilitative care. Objective The study aims at collecting evidence on competencies required by patients and health professionals for using telerehabilitation. We analyse tasks and requirements associated with telerehabilitation and derive and systematise relevant competencies. Methods We conducted a scoping review and analysed MEDLINE, Psyndex, EMBASE, Cochrane Library, and Web of Science for empirical studies and grey literature from 2017 to May 2022. Articles had to be in English/German and refer to medical rehabilitation accompanied by health professionals taking place in the patient's home. Results One hundred ten articles were included, covering video conferencing systems, applications with video, audio, or visual therapy content, or wearables. Depending on the program, tasks before, during, and after therapy sessions differ, as do whether these are performed by health professionals, patients, or the technology. Users need digital, health-related, social, personal, and health professionals also professional competencies. This comprises telerehabilitation, technical, health-related, and clinical knowledge, a range of physical, cognitive, social-interactive, technical, and clinical skills, a positive attitude towards telerehabilitation and experience. Whether sociodemographic factors promote successful use is unclear. Conclusions Telerehabilitation requires a variety of different competencies from patients and health professionals - going beyond the sphere of technical skills. This highlights the need for an evaluation of existing programs for promoting competencies in the use of telerehabilitation and refinement of the programs in line with demands.
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Affiliation(s)
- Anna Lea Stark
- Department Digital Health Sciences and Biomedicine, School of Life Sciences, University of Siegen, Siegen, Germany
| | - Stephan Krayter
- Department Digital Health Sciences and Biomedicine, School of Life Sciences, University of Siegen, Siegen, Germany
| | - Christoph Dockweiler
- Department Digital Health Sciences and Biomedicine, School of Life Sciences, University of Siegen, Siegen, Germany
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Kirkman MA, Day J, Gehring K, Zienius K, Grosshans D, Taphoorn M, Li J, Brown PD. Interventions for preventing and ameliorating cognitive deficits in adults treated with cranial irradiation. Cochrane Database Syst Rev 2022; 11:CD011335. [PMID: 36427235 PMCID: PMC9697842 DOI: 10.1002/14651858.cd011335.pub3] [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] [Indexed: 11/27/2022]
Abstract
BACKGROUND Cognitive deficits are common in people who have received cranial irradiation and have a serious impact on daily functioning and quality of life. The benefit of pharmacological and non-pharmacological treatment of cognitive deficits in this population is unclear. This is an updated version of the original Cochrane Review published in Issue 12, 2014. OBJECTIVES To assess the effectiveness of interventions for preventing or ameliorating cognitive deficits in adults treated with cranial irradiation. SEARCH METHODS For this review update we searched the Cochrane Register of Controlled Trials (CENTRAL), MEDLINE via Ovid, Embase via Ovid, and PsycInfo via Ovid to 12 September 2022. SELECTION CRITERIA We included randomised controlled (RCTs) trials that evaluated pharmacological or non-pharmacological interventions in cranial irradiated adults, with objective cognitive functioning as a primary or secondary outcome measure. DATA COLLECTION AND ANALYSIS Two review authors (MK, JD) independently extracted data from selected studies and carried out a risk of bias assessment. Cognitive function, fatigue and mood outcomes were reported. No data were pooled. MAIN RESULTS Eight studies met the inclusion criteria and were included in this updated review. Six were from the original version of the review, and two more were added when the search was updated. Nineteen further studies were assessed as part of this update but did not fulfil the inclusion criteria. Of the eight included studies, four studies investigated "prevention" of cognitive problems (during radiotherapy and follow-up) and four studies investigated "amelioration" (interventions to treat cognitive impairment as a late complication of radiotherapy). There were five pharmacological studies (two studies on prevention and three in amelioration) and three non-pharmacological studies (two on prevention and one in amelioration). Due to differences between studies in the interventions being evaluated, a meta-analysis was not possible. Studies in early radiotherapy treatment phase (five studies) Pharmacological studies in the "early radiotherapy treatment phase" were designed to prevent or ameliorate cognitive deficits and included drugs used in dementia (memantine) and fatigue (d-threo-methylphenidate hydrochloride). Non-pharmacological studies in the "early radiotherapy treatment phase" included a ketogenic diet and a two-week cognitive rehabilitation and problem-solving programme. In the memantine study, the primary cognitive outcome of memory at six months did not reach significance, but there was significant improvement in overall cognitive function compared to placebo, with similar adverse events across groups. The d-threo-methylphenidate hydrochloride study found no statistically significant difference between arms, with few adverse events. The study of a calorie-restricted ketogenic diet found no effect, although a lower than expected calorie intake in the control group complicates interpretation of the results. The study investigating the utility of a rehabilitation program did not carry out a statistical comparison of cognitive performance between groups. Studies in delayed radiation or late effect phase (four studies) The "amelioration" pharmacological studies to treat cognitive complications of radiotherapy included drugs used in dementia (donepezil) or psychostimulants (methylphenidate and modafinil). Non-pharmacological measures included cognitive rehabilitation and problem solving (Goal Management Training). These studies included patients with cognitive problems at entry who had "stable" brain cancer. The donepezil study did not find an improvement in the primary cognitive outcome of overall cognitive performance, but did find improvement in an individual test of memory, compared to placebo; adverse events were not reported. A study comparing methylphenidate with modafinil found improvements in cognitive function in both the methylphenidate and modafinil arms; few adverse events were reported. Another study comparing two different doses of modafinil combined treatment arms and found improvements across all cognitive tests, however, a number of adverse events were reported. Both studies were limited by a small sample size. The Goal Management Training study suggested a benefit of the intervention, a behavioural intervention that combined mindfulness and strategy training, on executive function and processing speed. There were a number of limitations across studies and few were without high risks of bias. AUTHORS' CONCLUSIONS In this update, limited additional evidence was found for the treatment or amelioration of cognitive deficits in adults treated with cranial irradiation. As concluded in the original review, there is supportive evidence that memantine may help prevent cognitive deficits for adults with brain metastases receiving cranial irradiation. There is supportive evidence that donepezil, methylphenidate and modafinil may have a role in treating cognitive deficits in adults with brain tumours who have been treated with cranial irradiation; patient withdrawal affected the statistical power of these studies. Further research that tries to minimise the withdrawal of consent, and subsequently reduce the requirement for imputation procedures, may offer a higher certainty of evidence. There is evidence from only a single small study to support non-pharmacological interventions in the amelioration of cognitive deficits. Further research is required.
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Affiliation(s)
- Matthew A Kirkman
- Department of Neurosurgery, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Julia Day
- Community Rehabilitation and Brain Injury Service (CRABIS), Strathbrock Partnership Centre, West Lothian, UK
| | - Karin Gehring
- Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, Netherlands
- Department of Cognitive Neuropsychology, Tilburg University, Tilburg, Netherlands
| | - Karolis Zienius
- Edinburgh Centre for Neuro-Oncology (ECNO), Western General Hospital, Edinburgh, UK
| | - David Grosshans
- Radiation Oncology, MD Anderson Cancer Center, Houston, Texas, USA
| | - Martin Taphoorn
- Department of Neurology, Haaglanden Medical Center, PO Box 432, Netherlands
| | - Jing Li
- Radiation Oncology, MD Anderson Cancer Center, Houston, Texas, USA
| | - Paul D Brown
- Radiation Oncology, Mayo Clinic, Rochester, MN, USA
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