Publications by authors named "Michael D Jenkinson"

Background: Core Outcome Sets (COS) define the minimum outcomes that should be measured and reported in all clinical trials for a specific health condition or health area. The aim was to develop 2 COS for intracranial meningioma to be used in future clinical studies: COSMIC: Intervention for effectiveness trials and COSMIC: Observation for studies of incidental/untreated meningioma.

Methods: A study advisory group was formed with representation from international stakeholder groups: EORTC BTG, ICOM, EANO, SNO, RANO-PRO, BNOS, SBNS, BIMS, TBTC, International Brain Tumour Alliance, and Brainstrust.

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Background: Central nervous system tumours affecting the brain and spine are the most common solid tumour site in the paediatric population and the most common causes of cancer death in children and young people. They are associated with high morbidity both from the tumour and the interventions used to treat them. Postoperative morbidity reporting following surgery for paediatric brain tumours is poor.

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Cranial meningioma are the most common type of primary brain tumor, and focal onset, tumor-related seizures affect a significant proportion of patients. Seizures affect 30% of symptomatic preoperative patients and a further 12% of postoperative patients. Although most patients may be cured of their oncological disease by surgery, seizures confer disability, reduced quality-of-life, delayed return to driving and work, and increase the risk of sudden death.

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This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the efficacy and tolerability of antiseizure medications (ASMs) in preventing a first seizure in people with brain tumours compared with placebo or no active treatment.

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Introduction: Chronic subdural haemorrhage (cSDH) is characterised by a pathological chronic collection of blood in the subdural space. Surgical evacuation is the conventional treatment of larger symptomatic cSDHs. Recurrence after conventional surgery remains an issue in up to 20%, and re-operation after surgical drainage is reported in 12%.

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Diffuse gliomas are the commonest malignant primary brain tumour in adults. Herein, we present analysis of the genomic landscape of adult glioma, by whole genome sequencing of 403 tumours (256 glioblastoma, 89 astrocytoma, 58 oligodendroglioma; 338 primary, 65 recurrence). We identify an extended catalogue of recurrent coding and non-coding genetic mutations that represents a source for future studies and provides a high-resolution map of structural variants, copy number changes and global genome features including telomere length, mutational signatures and extrachromosomal DNA.

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Background: Glioma are infiltrative primary brain tumours, which despite treatment, lead to a substantial reduction in life expectancy. Seizures are a common symptom of glioma, and have a serious impact on patient health related quality of life (HRQoL).

Objective: The study aimed to estimate health state utility values for different types of seizures related to glioma, a serious type of brain tumour.

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Background: Repetitive transcranial magnetic stimulation (rTMS) is established for depression and rehabilitation after stroke and is emerging for cognitive rehabilitation. We sought to evaluate patient and carer perceptions toward rTMS for rehabilitation after neurosurgery.

Methods: Two surveys were undertaken.

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Introduction: Management for elderly patients (> 65yo) with incidental meningiomas remains unclear. This study aims to characterize the functional and tumor outcomes of expectant and stereotactic radiosurgery (SRS) management of asymptomatic meningioma elderly patients.

Methods: Using retrospectively collected data from 14 centers, SRS outcomes were compared to radiographic and clinical observation of asymptomatic meningiomas in elderly patients following propensity score matching.

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Ganglioglioma is a rare primary brain tumour that most frequently occurs in children and young adults. They are generally low-grade and have a favourable prognosis, but there is limited literature to guide the optimal management. The aim of this study was to investigate the clinical outcomes of adults with intracranial ganglioglioma, and to determine the frequency and duration of radiological follow-up.

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The blood-brain barrier is a physiological barrier that can prevent both small and complex drugs from reaching the brain to exert a pharmacological effect. For treatment of neurological diseases, drug concentrations at the target site are a fundamental parameter for therapeutic effect; thus, the blood-brain barrier is a major obstacle to overcome. Novel strategies have been developed to circumvent the blood-brain barrier, including CSF delivery, intracranial delivery, ultrasound-based methods, membrane transporters, receptor-mediated transcytosis, and nanotherapeutics.

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Introduction: Given its proximity to the central nervous system, surgical site infections (SSIs) after craniotomy (SSI-CRAN) represent a serious adverse event. SSI-CRAN are associated with substantial patient morbidity and mortality. Despite the recognition of SSI in other surgical fields, there is a paucity of evidence in the neurosurgical literature devoted to skin closure, specifically in patients with brain tumors.

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Cranioplasty is an operation that aims to repair a defect in the skull. Indications commonly include Traumatic Brain Injury (TBI), tumours, and infections. It carries a high rate of postoperative morbidity.

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The Brain Tumor Group (BTG) of the European Organization for Research and Treatment of Cancer (EORTC) conducts academic clinical trials and translational research to improve clinical management of patients with primary and secondary brain tumors. The EORTC BTG has traditionally played an important role in providing evidence and thus advancing the field, albeit with a main focus on radiotherapy and pharmacotherapy in gliomas. Although examples of well-designed neuro-oncological surgical trials can be found, evidence in surgical neuro-oncology predominantly includes data from uncontrolled prospective series or retrospective cohorts.

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Meningiomas are the most common primary intracranial tumors of adults. For meningiomas that progress or recur despite surgical resection and radiotherapy, additional treatment options are limited due to a lack of proven efficacy. Meningiomas show recurring molecular aberrations, which may serve as predictive markers for systemic pharmacotherapies with targeted drugs or immunotherapy, radiotherapy, or radioligand therapy.

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Article Synopsis
  • Comprehensive reporting of clinical trial activity is essential, guided by the SPIRIT 2013 and CONSORT 2010 statements, which outline what should be included in protocols and result articles.
  • A review analyzed the reporting quality of 9 trial protocols and 76 trial result articles related to pediatric brain tumors, revealing an average adherence of 76.8% for protocols and around 67-71% for result articles to established reporting standards.
  • The findings suggest a need for improved reporting quality in pediatric neuro-oncology, especially regarding randomization and blinding, echoing similar issues previously identified in adult trials.
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Background: Recent studies have challenged the notion that patients with brain metastasis (BM) or leptomeningeal metastasis (LM) should be excluded from systemic therapy clinical trials. This scoping study summarizes the BM/LM clinical studies published between 2010 and 2023.

Methods: MEDLINE, CINAHL, CAB Abstracts, PsycINFO, Cochrane Library, HINARI, International Pharmaceutical Abstracts, PubMed, Scopus, Web of Science, and EMBASE electronic databases were searched on June 21, 2021.

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Pineal parenchymal tumors are rare neoplasms for which evidence-based treatment recommendations are lacking. These tumors vary in biology, clinical characteristics, and prognosis, requiring treatment that ranges from surgical resection alone to intensive multimodal antineoplastic therapy. Recently, international collaborative studies have shed light on the genomic landscape of these tumors, leading to refinement in molecular-based disease classification in the 5th edition of the World Health Organization (WHO) classification of tumors of the central nervous system.

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Background: Patients from socioeconomically disadvantaged backgrounds are underserved in randomised controlled trials, yet they experience a much greater burden of disease compared with patients from socioeconomically advantaged areas. It is crucial to make trials more inclusive to ensure that treatments and interventions are safe and effective in real-world contexts. Improving how information about trials is verbally communicated is an unexplored strategy to make trials more inclusive.

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Article Synopsis
  • - Meningiomas are the most common primary brain tumors in adults, with an increasing incidence linked to aging and better neuroimaging, and while many are benign, some are aggressive and treatment-resistant, leading to serious health impacts.
  • - Recent advancements in understanding meningioma biology have introduced molecular biomarkers for diagnosis and prognosis, but a standardized molecular classification for these tumors is still lacking.
  • - A comprehensive consensus review by the International Consortium on Meningiomas aims to guide clinicians and researchers by covering proposed classifications, novel treatment strategies, ongoing studies, and unique management approaches for different patient populations.
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Article Synopsis
  • In 2015, patient and charity activism led to the formation of a UK government group focused on brain tumor research.
  • By 2018, this resulted in a commitment of £20m from the government and £25m from Cancer Research UK for neuro-oncology over five years.
  • The review covers changes in the UK's brain tumor research landscape, identifies seven key research priorities, three overarching themes, and discusses the current status and challenges in this field.
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Article Synopsis
  • A systematic review was conducted to analyze how outcomes of meningioma clinical trials are measured and reported, addressing the lack of agreement on these measures.
  • The study reviewed 30 published articles and 18 ongoing trials, resulting in 47 clinical trials and 659 reported outcomes, which were grouped into unique terms using a standardized classification system.
  • The findings highlight the need for a more consistent approach to outcome measurement, leading to plans for a consensus meeting to create a core outcome set to guide future trials.
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Article Synopsis
  • A systematic review was conducted to analyze how outcomes are measured in studies of patients with incidental intracranial meningioma, as inconsistent practices have hindered comparative research.
  • The review included 33 published articles, resulting in 268 reported outcomes, which were refined to 178 unique outcomes categorized into 53 standardized terms and classified into 9 outcome domains.
  • The goal is to create a Core Outcome Set through stakeholder consensus, improving the consistency of outcome measurements in future studies.
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Background: Surgical site infections after craniotomy (SSI-CRANs) are a serious adverse event given the proximity of the wound to the central nervous system. SSI-CRANs are associated with substantial patient morbidity and mortality. Despite the importance and recognition of this event in other surgical fields, there is a paucity of evidence in the neurosurgical literature devoted to SSI-CRAN specifically in patients after brain tumor surgery.

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