Treatment with bevacizumab achieves both tumour stabilisation or regression and preservation or improvement of hearing. However, the efficacy of bevacizumab varies between patients and within patients. Side effects due to bevacizumab treatment are also common. It would be of value to predict therapeutic response prior to initiating therapy to prevent unnecessary exposure in patients unlikely to benefit.

We aim to recruit 25 patients with NF2-related schwannomatosis (NF2) with bilateral vestibular schwannomas. Patients will receive an intravenous injection of 37 MBq [⁸⁹Zr]bevacizumab followed by positron emission tomography (PET)/CT imaging 4 days later. After clinical evaluation at baseline, patients undergo bevacizumab treatment and are followed up at 3 and 6 months. The primary objective is to examine associations between pretreatment [⁸⁹Zr]bevacizumab uptake on PET/CT and changes in multiple hearing outcomes and radiological characteristics of the target tumour following treatment. Secondary outcome measures include vestibular functioning, patient reported outcome measures, cranial nerve functionality, peripheral neurology, non-target schwannoma response and renal function. Given the explorative nature of the study, associations between PET-derived metrics and clinical and radiological outcomes will be examined without formal hypothesis testing, using generalised estimating equations to account for within-patient correlation. Pairwise associations will be summarised in an association matrix with multiplicity addressed using an all-resolutions inference approach, and findings will be considered hypothesis generating.

This study was submitted via the Clinical Trials Information System reviewed and approved by the Medical Research Ethics Committee Leiden–The Hague–Delft Delft. The study findings will be disseminated through publication in peer-reviewed scientific journals and by presentation at national and international conferences.

The trial is registered at ClinicalTrials.gov Protocol Registration and Results System under the registration ID: NCT05685836.

Metabolic bariatric surgery (MBS) can lead to substantial fat-free mass loss (FFML) due to malnutrition, decreased protein intake and insufficient physical activity. Disproportional FFML has been associated with an increased risk for adverse health outcomes. Resistance training (RT) combined with protein intake contributes to maintenance and increase of fat-free mass (FFM) in healthy individuals. However, it is unclear whether RT and protein supplementation can prevent FFML after MBS.

In the EffectiveNess of pRotein supplementatIon Combined witH resistance Exercise training to counteract Disproportional fat-free mass loss following metabolic bariatric surgery (ENRICHED) randomised controlled trial, 400 patients scheduled to undergo MBS will be randomised in a 1:1 ratio to the ENRICHED perioperative care programme (intervention group) or the standard perioperative care programme of the Dutch Obesity Clinic (control group). The study is currently recruiting participants at two centres in the Netherlands: Nieuwegein and Amsterdam. The postoperative standard programme consists of 13 group sessions spread over a period of 18 months. As part of the ENRICHED programme, RT and protein supplementation will be added 3 weeks after MBS. Additional whole-body RT consists of home-based training sessions two to three times a week, and supervised RT sessions of 45–60 min once weekly, performed at 60–75% of one-repetition maximum (1-RM). Protein supplementation will start by adding 20 g of whey protein to the daily intake. The supplementation will be gradually increased with 20 g every 4 weeks until a total of 60 g whey protein a day is reached. After 12 weeks of protein supplementation, the focus shifts towards incorporating protein-rich food products into the daily dietary intake. The primary endpoint is the prevalence of disproportional FFM loss, defined as FFML/total weight loss ≥30%, at 3 months post-MBS. Secondary endpoints are differences in body composition, muscle strength and function, cardiorespiratory fitness, (cardio)metabolic health, health-related quality of life, gastrointestinal discomfort, cost-effectiveness of the intervention and treatment satisfaction. Outcomes will be assessed preoperatively and at 3, 6 and 12 months postoperatively.

The study protocol V.2.0 was approved by the Medical Research Ethics Committee Oost-Nederland (NL-OMON57119) on 9 April 2025. All participants will provide written informed consent prior to enrolment. Study findings will be disseminated through peer-reviewed publications and conference presentations. Insights gained in this study will provide evidence for a patient-tailored intervention that could be implemented in clinical practice.

NCT07156552.

The expenses associated with cancer treatment are increasing at a rapid pace. The financial strain of providing care is experienced worldwide, but is particularly pronounced in low and middle-income countries (LMICs). This has resulted in a growing acknowledgement of the importance of value-based cancer care. Choosing Wisely Africa (CWA) is an initiative aimed at reducing the excessive use and expenses associated with cancer treatment. In this study, we assessed adherence to CWA recommendations for the treatment of breast cancer in three high-volume cancer centres in Sub-Saharan Africa (SSA).

A cross-sectional study across Rwanda, Ghana and Tanzania was conducted, involving a review of medical records to assess adherence to five measurable CWA practices in breast cancer care. The study used inferential statistics, such as ² tests, to compare adherence among these countries.

This study was conducted in three cancer centres (Ocean Road Cancer Institute, Rwanda Military Hospital and Korle Bu Teaching Hospital) in three countries (Tanzania, Rwanda and Ghana, respectively).

A total of 542 patients were recruited. Eligible patients were those with a breast cancer diagnosis and complete data as pertaining to five CWA recommendations.

A total of 542 participants with a mean age of 51 years were included. Participants were well distributed across Ghana (37%), Rwanda (34%) and Tanzania (29%). Female patients represented 97% of the study cohort. Half (51%) of the participants had some form of insurance. The study observed high adherence to cancer staging (94%) before treatment and histological confirmation (91%) before breast lump removal across all sites. Hypofractionation was used in 0% of cases in Rwanda, 42% in Ghana and 70% in Tanzania.

This study provides critical insights into the implementation of CWA recommendations in breast cancer care in SSA. It highlights the disparities in adherence to CWA recommendations across different centres, showing the need for policy-driven changes and healthcare infrastructure improvement to standardise cancer care practices in LMICs.