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Brain Re-Irradiation Or Chemotherapy: a phase II randomised trial of re-irradiation and chemotherapy in patients with recurrent glioblastoma (BRIOChe) - protocol for a multi-centre open-label randomised trial

Por: Hudson · E. M. · Noutch · S. · Webster · J. · Brown · S. R. · Boele · F. W. · Al-Salihi · O. · Baines · H. · Bulbeck · H. · Currie · S. · Fernandez · S. · Hughes · J. · Lilley · J. · Smith · A. · Parbutt · C. · Slevin · F. · Short · S. · Sebag-Montefiore · D. · Murray · L.
Introduction

Glioblastoma (GBM) is the most common adult primary malignant brain tumour. The condition is incurable and, despite aggressive treatment at first presentation, almost all tumours recur after a median of 7 months. The aim of treatment at recurrence is to prolong survival and maintain health-related quality of life (HRQoL). Chemotherapy is typically employed for recurrent GBM, often using nitrosourea-based regimens. However, efficacy is limited, with reported median survivals between 5 and 9 months from recurrence. Although less commonly used in the UK, there is growing evidence that re-irradiation may produce survival outcomes at least similar to nitrosourea-based chemotherapy. However, there remains uncertainty as to the optimum approach and there is a paucity of available data, especially with regards to HRQoL. Brain Re-Irradiation Or Chemotherapy (BRIOChe) aims to assess re-irradiation, as an acceptable treatment option for recurrent IDH-wild-type GBM.

Methods and analysis

BRIOChe is a phase II, multi-centre, open-label, randomised trial in patients with recurrent GBM. The trial uses Sargent’s three-outcome design and will recruit approximately 55 participants from 10 to 15 UK radiotherapy sites, allocated (2:1) to receive re-irradiation (35 Gy in 10 daily fractions) or nitrosourea-based chemotherapy (up to six, 6-weekly cycles). The primary endpoint is overall survival rate for re-irradiation patients at 9 months. There will be no formal statistical comparison between treatment arms for the decision-making primary analysis. The chemotherapy arm will be used for calibration purposes, to collect concurrent data to aid interpretation of results. Secondary outcomes include HRQoL, dexamethasone requirement, anti-epileptic drug requirement, radiological response, treatment compliance, acute and late toxicities, progression-free survival.

Ethics and dissemination

BRIOChe obtained ethical approval from Office for Research Ethics Committees Northern Ireland (reference no. 20/NI/0070). Final trial results will be published in peer-reviewed journals and adhere to the ICMJE guidelines.

Trial registration number

ISRCTN60524.

Prevalence and determinants of not testing for HIV among young adult women in Papua New Guinea: findings from the Demographic and Health Survey, 2016-2018

Por: Maviso · M. · Kalembo · F. W.
Objective

The aim of this study was to assess the prevalence of not testing for HIV and its determinants among young adult women aged 15–29 years in Papua New Guinea (PNG).

Design and setting

The study used secondary data from the 2016 to 2018 PNG Demographic and Health Survey (PNGDHS), a nationally representative cross-sectional survey that used a two-stage stratified sampling.

Participants

A total weighed sample of 5164 young adult women aged 15–29 years were included in the analysis.

Primary outcome measure

Ever been tested for HIV was the primary outcome of the study. All analyses were adjusted using survey weights to account for unequal sampling probabilities.

Results

The prevalence of not testing for HIV was 58.8% (95% CI: 57.4% to 60.1%). The mean age was 21.65 years (SD = 4.23). Of the women who were not tested for HIV, the majority were never married (79.4%), without formal education (63%), not working (60.2%), and from rural areas (62.9%). In the multivariable analysis, those who were never married (adjusted OR (AOR) 4.9, 95% CI 3.6 to 6.6), had poor wealth index (AOR 1.8, 95% CI 1.3 to 2.5), were from rural areas (AOR 2.0, 95% CI 1.5 to 2.6), were from the Momase region (AOR 1.3, 95% CI 1.0 to 1.7), did not read newspapers or magazines (AOR 1.7, 95% CI 1.3 to 2.1), did not listen to the radio (AOR 1.5, 95% CI 1.1 to 2.0), experienced early sexual debut (AOR 1.5, 95% CI 1.1 to 1.9), had one sexual partner (AOR 1.5, 95% CI 1.2 to 2.0) and reported no sexually transmitted infection (STI) in the past 12 months (AOR 1.8, 95% CI 1.1 to 3.1) had higher odds of not testing for HIV.

Conclusions

Our study found a very high unmet need for HIV testing among young adult women in PNG. Health promotion programmes should be designed to increase HIV knowledge and access to testing services, particularly targeting young women who are disadvantaged and from rural areas.

Rationale and design of the THIRST Alert feasibility study: a pragmatic, single-centre, parallel-group randomised controlled trial of an interruptive alert for oral fluid restriction in patients treated with intravenous furosemide

Por: Chen · Y. · Shah · A. · Jani · Y. · Higgins · D. · Saleem · N. · Chafer · K. · Sydes · M. R. · Asselbergs · F. W. · Lumbers · R. T.
Introduction

Acute heart failure (HF) is a major cause of unplanned hospitalisation characterised by excess body water. A restriction in oral fluid intake is commonly imposed on patients as an adjunct to pharmacological therapy with loop diuretics, but there is a lack of evidence from traditional randomised controlled trials (RCTs) to support the safety and effectiveness of this intervention in the acute setting.

This study aims to explore the feasibility of using computer alerts within the electronic health record (EHR) system to invite clinical care teams to enrol patients into a pragmatic RCT at the time of clinical decision-making. It will additionally assess the effectiveness of using an alert to help address the clinical research question of whether oral fluid restriction is a safe and effective adjunct to pharmacological therapy for patients admitted with fluid overload.

Methods and analysis

THIRST (Randomised Controlled Trial within the electronic Health record of an Interruptive alert displaying a fluid Restriction Suggestion in patients with the treatable Trait of congestion) Alert is a single-centre, parallel-group, open-label pragmatic RCT embedded in the EHR system that will be conducted as a feasibility study at an National Health Service (NHS) hospital in London. The clinical care team will be invited to enrol suitable patients in the study using a point-of-care alert with a target sample size of 50 patients. Enrolled patients will then be randomised to either restricted or unrestricted oral fluid intake. Two primary outcomes will be explored (1) the proportion of eligible patients enrolled in the study and (2) the mean difference in oral fluid intake between randomised groups. A series of secondary outcomes are specified to evaluate the effectiveness of the alert, adherence to the randomised treatment allocation and the quality of data generated from routine care, relevant to the outcomes of interest.

Ethics and dissemination

This study was approved by Riverside Research Ethics Committee (Ref: 22/LO/0889) and will be published on completion.

Trial registration number

NCT05869656.

Burden of drug-resistant tuberculosis among contacts of index cases: a protocol for a systematic review

Por: Akalu · T. Y. · Clements · A. C. A. · Gebreyohannes · E. A. · Wolde · H. F. · Shiferaw · F. W. · Alene · K. A.
Introduction

People having close contact with drug-resistant tuberculosis (DR-TB) patients are at increased risk of contracting and developing the disease. However, no comprehensive review has been undertaken to estimate the burden of DR-TB among contacts of DR-TB patients. Therefore, the current systematic review will quantify the prevalence and incidence of DR-TB among contacts of DR-TB patients.

Method and analysis

Systematic searches will be conducted in Medline, Embase, Web of Science, Scopus, Cochrane Central Register of Controlled trials (CENTRAL) and Cumulative Index to Nursing and Allied Health Literature (CINHAL) databases. The search will be conducted without restrictions on time, language and geography. A random-effects meta-analysis will be conducted for effect estimates. The pooled prevalence and incidence of DR-TB will be compared between people with and without contact with DR-TB patients. The presence of heterogeneity between studies will be assessed by Higgins I2 statistics. Subgroup analysis will be conducted to determine the source of heterogeneity. The risk of bias will be assessed using a visual inspection of the funnel plot and Egger’s regression test statistics. Trim and fill analysis will be done in the presence of publication bias. A sensitivity analysis will be conducted by trimming low-quality studies. The systematic review will be reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocol guidelines.

Ethics and dissemination

Ethical approval will not be required for this study as it will be a systematic review and meta-analysis based on previously published evidence. The findings of the systematic review will be presented at scientific conferences and published in scientific journals.

Protocol registration

The protocol is published in PROSPERO with registration number CRD42023390339.

RELEASE-HF study: a protocol for an observational, registry-based study on the effectiveness of telemedicine in heart failure in the Netherlands

Por: van Eijk · J. · Luijken · K. · Jaarsma · T. · Reitsma · J. B. · Schuit · E. · Frederix · G. W. J. · Derks · L. · Schaap · J. · Rutten · F. H. · Brugts · J. · de Boer · R. A. · Asselbergs · F. W. · Trappenburg · J. C. A. · RELEASE-HF Investigators · Jan Borleffs · Dalen · Erol-Yilmaz
Introduction

Meta-analyses show postive effects of telemedicine in heart failure (HF) management on hospitalisation, mortality and costs. However, these effects are heterogeneous due to variation in the included HF population, the telemedicine components and the quality of the comparator usual care. Still, telemedicine is gaining acceptance in HF management. The current nationwide study aims to identify (1) in which subgroup(s) of patients with HF telemedicine is (cost-)effective and (2) which components of telemedicine are most (cost-)effective.

Methods and analysis

The RELEASE-HF (‘REsponsible roLl-out of E-heAlth through Systematic Evaluation – Heart Failure’) study is a multicentre, observational, registry-based cohort study that plans to enrol 6480 patients with HF using data from the HF registry facilitated by the Netherlands Heart Registration. Collected data include patient characteristics, treatment information and clinical outcomes, and are measured at HF diagnosis and at 6 and 12 months afterwards. The components of telemedicine are described at the hospital level based on closed-ended interviews with clinicians and at the patient level based on additional data extracted from electronic health records and telemedicine-generated data. The costs of telemedicine are calculated using registration data and interviews with clinicians and finance department staff. To overcome missing data, additional national databases will be linked to the HF registry if feasible. Heterogeneity of the effects of offering telemedicine compared with not offering on days alive without unplanned hospitalisations in 1 year is assessed across predefined patient characteristics using exploratory stratified analyses. The effects of telemedicine components are assessed by fitting separate models for component contrasts.

Ethics and dissemination

The study has been approved by the Medical Ethics Committee 2021 of the University Medical Center Utrecht (the Netherlands). Results will be published in peer-reviewed journals and presented at (inter)national conferences. Effective telemedicine scenarios will be proposed among hospitals throughout the country and abroad, if applicable and feasible.

Trial registration number

NCT05654961.

BMP9 is a potent inducer of chondrogenesis, volumetric expansion and collagen type II accumulation in bovine auricular cartilage chondroprogenitors

by Oliver F. W. Gardner, Yadan Zhang, Ilyas M. Khan

Reconstruction of the outer ear currently requires harvesting of cartilage from the posterior of the auricle or ribs leading to pain and donor site morbidity. An alternative source for auricular reconstruction is in vitro tissue engineered cartilage using stem/progenitor cells. Several candidate cell-types have been studied with tissue-specific auricular cartilage progenitor cells (AuCPC) of particular interest. Whilst chondrogenic differentiation of competent stem cells using growth factor TGFβ1 produces cartilage this tissue is frequently fibrocartilaginous and lacks the morphological features of hyaline cartilage. Recent work has shown that growth factor BMP9 is a potent chondrogenic and morphogenetic factor for articular cartilage progenitor cells, and we hypothesised that this property extends to cartilage-derived progenitors from other tissues. In this study we show monoclonal populations of AuCPCs from immature and mature bovine cartilage cultured with BMP9 produced cartilage pellets have 3-5-fold greater surface area in sections than those grown with TGFβ1. Increased volumetric growth using BMP9 was due to greater sGAG deposition in immature pellets and significantly greater collagen accumulation in both immature and mature progenitor pellets. Polarised light microscopy and immunohistochemical analyses revealed that the organisation of collagen fibrils within pellets is an important factor in the growth of pellets. Additionally, chondrocytes in BMP9 stimulated cell pellets had larger lacunae and were more evenly dispersed throughout the extracellular matrix. Interestingly, BMP9 tended to normalise the response of immature AuCPC monoclonal cell lines to differentiation cues whereas cells exhibited more variation under TGFβ1. In conclusion, BMP9 appears to be a potent inducer of chondrogenesis and volumetric growth for AuCPCs a property that can be exploited for tissue engineering strategies for reconstructive surgery though with the caveat of negligible elastin production following 21-day treatment with either growth factor.
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