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Abstract Fatigue is a dominant feature of both acute and convalescent coronavirus disease 2019 (COVID-19) (sometimes termed “long-COVID”), with up to 46% of patients reporting fatigue that lasts from weeks to months. The investigators of the international Collaborative on Fatigue Following Infection (COFFI) conducted a systematic review of post-COVID fatigue and a narrative review on fatigue after other infections, and made recommendations for clinical and research approaches to assessing fatigue after COVID-19. In the majority of COVID-19 cohort studies, persistent fatigue was reported by a significant minority of patients, ranging from 13% to 33% at 16–20 weeks post-symptom onset. Data from the prospective cohort studies in COFFI and others indicate that fatigue is also a prevalent outcome from many acute systemic infections, notably infectious mononucleosis, with a case rate for clinically significant Post-infective fatigue after exclusion of recognized medical and psychiatric causes, ranging from 10%–35% at 6 months. To better characterize post-COVID fatigue, the COFFI investigators recommend the following: application of validated screening questionnaires for case detection; standardized interviews encompassing fatigue, mood, and other symptoms; and investigative approaches to identify end-organ damage and mental health conditions. Fatigue after COVID-19 is common but generally resolves over months, like other postinfective fatigue states. Post-COVID fatigue results from end-organ injury, mental health conditions, or idiopathic post-COVID fatigue. Post-COVID fatigue should be assessed with validated questionnaires, interviews, and protocolized investigations.

Patient-generated health data (PGHD), or health-related data gathered from patients to help address a health concern, are used increasingly in oncology to make regulatory decisions and evaluate quality of care. PGHD include self-reported health and treatment histories, patient-reported outcomes (PROs), and biometric sensor data. Advances in wireless technology, smartphones, and the Internet of Things have facilitated new ways to collect PGHD during clinic visits and in daily life. The goal of the current review was to provide an overview of the current clinical, regulatory, technological, and analytic landscape as it relates to PGHD in oncology research and care. The review begins with a rationale for PGHD as described by the US Food and Drug Administration, the Institute of Medicine, and other regulatory and scientific organizations. The evidence base for clinic-based and remote symptom monitoring using PGHD is described, with an emphasis on PROs. An overview is presented of current approaches to digital phenotyping or device-based, real-time assessment of biometric, behavioral, self-report, and performance data. Analytic opportunities regarding PGHD are envisioned in the context of big data and artificial intelligence in medicine. Finally, challenges and solutions for the integration of PGHD into clini-cal care are presented. The challenges include electronic medical record integration of PROs and biometric data, analysis of large and complex biometric data sets, and potential clinic workflow redesign. In addition, there is currently more limited evidence for the use of biometric data relative to PROs. Despite these challenges, the poten-tial benefits of PGHD make them increasingly likely to be integrated into oncology research and clinical care.

Background Treatment of pituitary pathology mostly does not result in complete recovery of impairment in cognitive functioning. The primary aim of the current study was to assess cognitive impairment in patients with stable replacement therapy for hypopituitarism during the last 6 months prior to inclusion. It was expected that patients showed subjective and objective subnormal scores on neuropsychological functioning. Methods Forty‐two patients (40% men, 49 ± 15 years) treated for hypopituitarism conducted a neuropsychological test battery, including the Cognitive Failures Questionnaire (CFQ), 15‐Word test (15‐WT), Cambridge Neuropsychological Test Automated Battery (CANTAB) Motor Screening Task (MOT), Spatial Working Memory (SWM) and Affective Go/No‐go (AGN). Results were compared to reference values of healthy norm groups. Results Male and female participants scored significantly worse on the CFQ (P < .01, d = 0.91‐4.09) and AGN mean correct latency (P < .01, d = 1.66 and 1.29, respectively). Female participants scored significantly worse on 15‐WT direct recall (P = .01, d = 0.66), 15‐WT delayed recall (P = .01, d = 0.79), SWM total errors (P = .05, d = 0.41), SWM strategy (P = .04, d = 0.43), AGN errors of commission (P = .02, d = 0.56) and omission (P = .04, d = 0.41). Conclusion This study shows that subjective cognitive functioning is worse in patients treated for hypopituitarism compared to reference data. Also, female participants treated for hypopituitarism score worse on objective aspects of memory and executive functioning compared to reference data. Besides worse focus attention, this objective cognitive impairment was not found in male participants. It is recommended to conduct additional research, which focuses on the design and evaluation of a cognitive remediation therapy, aimed at compensation of impairments in different aspects of memory and executive functioning. Treatment of pituitary pathology mostly does not result in complete recovery of impairment in cognitive functioning. This study shows that subjective cognitive functioning is worse in patients treated for hypopituitarism compared to reference data. Also, female participants treated for hypopituitarism score worse on objective aspects of memory and executive functioning compared to reference data.

Fatigue is commonly reported in a variety of illnesses, and it has major impact on quality of life. Previously, it was thought that fatigue originates in the skeletal muscles, leading to cessation of activity. However, more recently, it has become clear that the brain is the central regulator of fatigue perception. It has been suggested that pro-inflammatory cytokines, especially interleukin-1 alpha (IL-1α) and interleukin-1 beta (IL-1β), play a prominent role in the development of central fatigue, and several studies have been performed to elucidate the connection between inflammation and these central processes. In this narrative review, mechanisms of action of IL-1 are described, with special attention to its effect on the central nervous system. In addition, we present a summary of studies that (i) investigated the relationship between circulating IL-1α and IL-1β and fatigue severity and/or (ii) evaluated the effect of inhibiting IL-1 on fatigue. We aim to improve the understanding of fatigue in both inflammatory and non-inflammatory illnesses, which could help develop strategies to treat fatigue more effectively. Reviewing the studies that have been performed, it appears that there is a limited value of measuring circulating IL-1. However, inhibiting IL-1 has a positive effect on severe fatigue in most studies that have been conducted.

Background Fatigue is the main complaint of 5–10% of patients in primary care and is often associated with significant suffering and functional disability. Cognitive behavioral therapy (CBT) has demonstrated efficacy in reducing fatigue severity in diverse clinical populations in specialized healthcare settings, with common treatment mechanisms identified across conditions. This study is the first to evaluate the feasibility and acceptability of a transdiagnostic CBT (tCBT) for a heterogeneous sample of patients suffering from severe and persistent fatigue in a primary care context. Methods A single-arm feasibility study was conducted in routine primary care. Adults with severe and persistent fatigue received a blended tCBT combining individual sessions and internet-based materials. Feasibility and acceptability were evaluated through adherence, completion, attrition, therapist fidelity, patient satisfaction, credibility, and negative effects. Preliminary effectiveness was evaluated by self-reported symptom change from pre- to post-treatment (6 months). Results Eighteen participants were enrolled, of whom fourteen completed the full intervention. Treatment adherence and therapist fidelity were satisfactory, and data attrition was minimal. Participants reported high satisfaction and treatment credibility. No serious adverse events were reported. Half of the participants reported some negative effects of treatment, primarily consisting of transient increases in fatigue and sleep disturbances. Large within-group reductions were observed in self-reported fatigue severity and functional impairment over the 6-month treatment period. Conclusions Preliminary findings suggest that tCBT for fatigue is feasible and acceptable in a primary care setting. Interpretation is limited by the small sample size and single-arm design. Larger randomized controlled trials are warranted to evaluate effectiveness and to determine which patients benefit most and through which mechanisms. Trial registration Pre-registered on Clinicaltrials.gov (NCT06341751), registration date: 2024-03-13.

Background Childhood, adolescent, and young adult (CAYA) cancer survivors, at risk for late effects, including cancer-related fatigue, cardiovascular issues, and psychosocial challenges, may benefit from interventions stimulating behaviour adjustments. Three nurse-led eHealth interventions (REVIVER) delivered via video calls and elaborating on person-centred care, cognitive behaviour therapy and/or motivational interviewing were developed. These interventions target: 1) fatigue management, 2) healthier lifestyle behaviours, and 3) self-efficacy and self-management. This study aimed to assess the feasibility and potential effectiveness of the REVIVER interventions for CAYA cancer survivors and healthcare professionals. Methods In a single-group mixed methods design, CAYA cancer survivors aged 16–54, more than five years post-treatment, were enrolled. Feasibility, assessed via Bowen's outcomes for feasibility studies, included acceptability, practicality, integration and implementation, demand and adherence . Qualitative data from semi-structured interviews and a focus group interview with survivors and healthcare professionals supplemented the evaluation. Paired sample t-tests assessed changes in self-reported quality of life, fatigue, lifestyle, self-management, and self-efficacy at baseline (T0), post-intervention (T1), and 6-month follow-up (T2). Results The interventions and video consults were generally acceptable, practical , and successfully integrated and implemented . Success factors included the nurse consultant (i.e., communication, approach, and attitude) and the personalised approach. Barriers included sustainability concerns, technical issues, and short intervention duration. Regarding demand , 71.4%, 65.4%, and 100% of eligible CAYA cancer survivors engaged in the fatigue ( N  = 15), lifestyle ( N  = 17) and empowerment ( N  = 3) intervention, respectively, with 5, 5 and 2 participants interviewed, correspondingly. Low interest ( demand ) in the empowerment intervention ( N  = 3) and dropout rates of one-third for both fatigue and empowerment interventions were noted ( adherence ). Improvements in quality of life, fatigue (fatigue intervention), lifestyle (lifestyle intervention), self-efficacy, and self-management were evident among survivors who completed the fatigue and lifestyle interventions, with medium and large effect sizes observed immediately after the intervention and six months post-intervention. Conclusions Our study demonstrates the feasibility of nurse-led video coaching (REVIVER interventions) despite lower demand for the empowerment intervention and lower adherence to the fatigue and empowerment interventions. The medium and high effect sizes found for those who completed the interventions hold potential clinical significance for future studies investigating the effectiveness of the REVIVER interventions.

Background Fatigue is the most frequent and burdensome symptom of patients with diffuse glioma. It is closely linked to decreased health-related quality of life and symptoms such as depression and sleep disturbances. Currently, there is no evidence-based treatment that targets severe fatigue in patients with brain tumours. Cognitive behavioural therapy is aimed at fatigue-maintaining beliefs and behaviour. This therapy has been proven effective in reducing severe fatigue in cancer survivors and patients with multiple sclerosis. A blended therapy program combines sessions with a therapist with therapist-guided web-based therapy modules. The aim of this randomized controlled trial is to determine the efficacy of blended cognitive behavioural therapy in treating severe fatigue in patients with diffuse glioma. Methods We will include a maximum of 100 patients with diffuse glioma with clinically and radiologically stable disease and severe fatigue (i.e. Checklist Individual Strength, subscale fatigue severity ≥ 35). Patients will be randomized to blended cognitive behavioural therapy or a waiting list condition. The 12-week intervention GRIP on fatigue consists of five patient-therapist sessions and five to eight individualized web-based therapy modules supported by email contact. The primary outcome measure is fatigue severity. Secondary outcome measures include sleep quality, health-related quality of life, depression, anxiety, functional impairment and subjective and objective cognitive functioning. Primary and secondary outcome measures will be assessed at baseline and after 14 and 24 weeks. Magnetoencephalography and MRI will be used to evaluate potential biomarkers for intervention success. This trial has a Bayesian design: we will conduct multiple interim analyses to test for efficacy or futility of the trial. This is the first trial within the GRIP trial platform : a platform developing four to five different interventions for the most common symptoms in patients with diffuse glioma. Discussion The results of the GRIP on fatigue trial will provide information about the efficacy of this intervention on fatigue in patients with diffuse glioma. Multiple other outcomes and possible predictors of treatment success will also be explored. Trial registration Netherlands Trial Register NL8711 . Registered on 14 June 2020.

Internet-based cognitive behavior therapy (I-CBT) for adolescents with chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) has been shown to be effective in a randomized controlled trial (RCT; Fatigue in Teenagers on the Internet [FITNET]). FITNET can cause a significant reduction in fatigue and disability. We aimed to investigate whether FITNET treatment implemented in routine clinical care (IMP-FITNET) was as effective, using the outcomes of the FITNET RCT as the benchmark. Outcomes of CFS/ME adolescents who started IMP-FITNET between October 2012 and March 2018 as part of routine clinical care were compared to the outcomes in the FITNET RCT. The primary outcome was fatigue severity assessed posttreatment. The secondary outcomes were self-reported physical functioning, school attendance, and recovery rates. Clinically relevant deterioration was assessed posttreatment, and for this outcome, a face-to-face CBT trial was used as the benchmark. The attitude of therapists toward the usability of IMP-FITNET was assessed through semistructured interviews. The number of face-to-face consultations during IMP-FITNET was registered. Of the 384 referred adolescents with CFS/ME, 244 (63.5%) started IMP-FITNET, 84 (21.9%) started face-to-face CBT, and 56 (14.6%) were not eligible for CBT. Posttreatment scores for fatigue severity (mean 26.0, SD 13.8), physical functioning (mean 88.2, SD 15.0), and full school attendance (mean 84.3, SD 26.5) fell within the 95% CIs of the FITNET RCT. Deterioration of fatigue and physical functioning after IMP-FITNET was observed at rates of 1.2% (n=3) and 4.1% (n=10), respectively, which is comparable to a waiting list condition (fatigue: 1.2% vs 5.7%, χ =3.5, P=.06; physical functioning: 4.1% vs 11.4%, χ =3.3, P=.07). Moreover, 41 (16.8%) IMP-FITNET patients made use of face-to-face consultations. IMP-FITNET is an effective and safe treatment for adolescents with CFS/ME in routine clinical care.

We investigated the feasibility of a web-based cognitive-behavioral therapy to reduce cancer-related fatigue (CRF) among survivors of Hodgkin lymphoma. In this before-and-after trial, patients were primarily recruited via the German Hodgkin Study Group (GHSG). We assessed feasibility (response and drop-out rate) and preliminary efficacy including CRF, quality of life (QoL), and depressive symptomatology. T tests compared baseline levels with t1 (post treatment) and t2 (3 months of follow-up). Among 79 patients contacted via the GHSG, 33 provided interest (42%). Among the seventeen participants, four were treated face-to-face (pilot patients), 13 underwent the web-based version. Ten patients completed the treatment (41%). Among all participants, CRF, depressive symptomatology, and QoL improved at t1 ( p  ≤ .03). The effect in one of the CRF measures remained at t2 ( p  = .03). Except for QoL, post-treatment effects were replicated among the completers of the web-based version ( p  ≤ .04). The potential for this program has been demonstrated, but needs to be re-assessed after identified issues on feasibility have been resolved. Trial registration: The study was registered at ClinicalTrials.gov (Number: NCT03968250).