Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 95
Filtrar
1.
Trials ; 23(1): 433, 2022 May 23.
Artículo en Inglés | MEDLINE | ID: covidwho-2320256

RESUMEN

BACKGROUND: Type 1 diabetes (T1D) places an extraordinary burden on individuals and their families, as well as on the healthcare system. Despite recent advances in glucose sensors and insulin pump technology, only a minority of patients meet their glucose targets and face the risk of both acute and long-term complications, some of which are life-threatening. The JAK-STAT pathway is critical for the immune-mediated pancreatic beta cell destruction in T1D. Our pre-clinical data show that inhibitors of JAK1/JAK2 prevent diabetes and reverse newly diagnosed diabetes in the T1D non-obese diabetic mouse model. The goal of this study is to determine if the JAK1/JAK2 inhibitor baricitinib impairs type 1 diabetes autoimmunity and preserves beta cell function. METHODS: This will be as a multicentre, two-arm, double-blind, placebo-controlled randomized trial in individuals aged 10-30 years with recent-onset T1D. Eighty-three participants will be randomized in a 2:1 ratio within 100 days of diagnosis to receive either baricitinib 4mg/day or placebo for 48 weeks and then monitored for a further 48 weeks after stopping study drug. The primary outcome is the plasma C-peptide 2h area under the curve following ingestion of a mixed meal. Secondary outcomes include HbA1c, insulin dose, continuous glucose profile and adverse events. Mechanistic assessments will characterize general and diabetes-specific immune responses. DISCUSSION: This study will determine if baricitinib slows the progressive, immune-mediated loss of beta cell function that occurs after clinical presentation of T1D. Preservation of beta cell function would be expected to improve glucose control and prevent diabetes complications, and justify additional trials of baricitinib combined with other therapies and of its use in at-risk populations to prevent T1D. TRIAL REGISTRATION: ANZCTR ACTRN12620000239965 . Registered on 26 February 2020. CLINICALTRIALS: gov NCT04774224. Registered on 01 March 2021.


Asunto(s)
Diabetes Mellitus Tipo 1 , Animales , Azetidinas , Péptido C , Ensayos Clínicos Fase II como Asunto , Diabetes Mellitus Tipo 1/diagnóstico , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Método Doble Ciego , Glucosa/uso terapéutico , Humanos , Quinasas Janus/uso terapéutico , Ratones , Estudios Multicéntricos como Asunto , Purinas , Pirazoles , Ensayos Clínicos Controlados Aleatorios como Asunto , Factores de Transcripción STAT/uso terapéutico , Transducción de Señal , Sulfonamidas , Resultado del Tratamiento
2.
Trials ; 23(1): 372, 2022 May 07.
Artículo en Inglés | MEDLINE | ID: covidwho-2319431

RESUMEN

BACKGROUND: Platform trial designs are used increasingly in cancer clinical research and are considered an efficient model for evaluating multiple compounds within a single disease or disease subtype. However, these trial designs can be challenging to operationalise. The use of platform trials in oncology clinical research has increased considerably in recent years as advances in molecular biology enable molecularly defined stratification of patient populations and targeted therapy evaluation. Whereas multiple separate trials may be deemed infeasible, platform designs allow efficient, parallel evaluation of multiple targeted therapies in relatively small biologically defined patient sub-populations with the promise of increased molecular screening efficiency and reduced time for drug evaluation. Whilst the theoretical efficiencies are widely reported, the operational challenges associated with these designs (complexity, cost, regulatory, resource) are not always well understood. MAIN: In this commentary, we describe our practical experience of the implementation and delivery of the UK plasmaMATCH trial, a platform trial in advanced breast cancer, comprising an integrated screening component and multiple parallel downstream mutation-directed therapeutic cohorts. plasmaMATCH reported its primary results within 3 years of opening to recruitment. We reflect on the operational challenges encountered and share lessons learnt to inform the successful conduct of future trials. Key to the success of the plasmaMATCH trial was well co-ordinated stakeholder engagement by an experienced clinical trials unit with expert methodology and trial management expertise, a federated model of clinical leadership, a well-written protocol integrating screening and treatment components and including justification for the chosen structure and intentions for future adaptions, and an integrated funding model with streamlined contractual arrangements across multiple partners. Findings based on our practical experience include the importance of early engagement with the regulators and consideration of a flexible resource infrastructure to allow adequate resource allocation to support concurrent trial activities as adaptions are implemented in parallel to the continued management of patient safety and data quality of the ongoing trial cohorts. CONCLUSION: Platform trial designs allow the efficient reporting of multiple treatment cohorts. Operational challenges can be overcome through multidisciplinary engagement, streamlined contracting processes, rationalised protocol and database design and appropriate resourcing.


Asunto(s)
Neoplasias de la Mama , Ensayos Clínicos Fase II como Asunto , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/genética , Estudios de Cohortes , Manejo de Datos , Femenino , Humanos , Proyectos de Investigación
3.
BMJ Open ; 13(4): e068363, 2023 04 06.
Artículo en Inglés | MEDLINE | ID: covidwho-2299785

RESUMEN

INTRODUCTION: Acute kidney injury (AKI) is a common complication after cardiac surgery (CS) and is associated with adverse short-term and long-term outcomes. Alpha-1-microglobulin (A1M) is a circulating glycoprotein with antioxidant, heme binding and mitochondrial-protective mechanisms. RMC-035 is a modified, more soluble, variant of A1M and has been proposed as a novel targeted therapeutic protein to prevent CS-associated AKI (CS-AKI). RMC-035 was considered safe and generally well tolerated when evaluated in four clinical phase 1 studies. METHODS AND ANALYSIS: This is a phase 2, randomised, double-blind, adaptive design, parallel group clinical study that evaluates RMC-035 compared with placebo in approximately 268 cardiac surgical patients at high risk for CS-AKI. RMC-035 is administered as an intravenous infusion. In total, five doses will be given. Dosing is based on presurgery estimated glomerular filtration rate (eGFR), and will be either 1.3 or 0.65 mg/kg.The primary study objective is to evaluate whether RMC-035 reduces the incidence of postoperative AKI, and key secondary objectives are to evaluate whether RMC-035 improves postoperative renal function compared with placebo. A blinded interim analysis with potential sample size reassessment is planned once 134 randomised subjects have completed dosing. An independent data monitoring committee will evaluate safety and efficacy data at prespecified intervals throughout the trial. The study is a global multicentre study at approximately 30 sites. ETHICS AND DISSEMINATION: The trial was approved by the joint ethics committee of the physician chamber Westfalen-Lippe and the University of Münster (code '2021-778 f-A') and subsequently approved by the responsible ethics committees/relevant institutional review boards for the participating sites. The study is conducted in accordance with Good Clinical Practice, the Declaration of Helsinki and other applicable regulations. Results of this study will be published in a peer-reviewed scientific journal. TRIAL REGISTRATION NUMBER: NCT05126303.


Asunto(s)
Lesión Renal Aguda , COVID-19 , Procedimientos Quirúrgicos Cardíacos , Humanos , SARS-CoV-2 , Método Doble Ciego , Lesión Renal Aguda/etiología , Lesión Renal Aguda/prevención & control , Procedimientos Quirúrgicos Cardíacos/efectos adversos , Ensayos Clínicos Controlados Aleatorios como Asunto , Ensayos Clínicos Fase II como Asunto , Estudios Multicéntricos como Asunto
4.
BMC Cancer ; 23(1): 262, 2023 Mar 21.
Artículo en Inglés | MEDLINE | ID: covidwho-2297896

RESUMEN

BACKGROUND: Primary brain tumor (PBT) patients experience higher levels of distress and anxiety than other solid tumor patients, particularly at the time of clinical evaluation when uncertainty about disease status is high ("scanxiety"). There is promising evidence supporting use of virtual reality (VR) to target psychological symptoms in other solid tumor patients, though PBT patients have not been studied extensively in this context. The primary aim of this phase 2 clinical trial is to establish the feasibility of a remote VR-based relaxation intervention for a PBT population, with secondary aims designed to determine preliminary efficacy of improving distress and anxiety symptoms. METHODS: PBT patients (N = 120) with upcoming MRI scans and clinical appointments who meet eligibility will be recruited to participate in a single arm trial conducted remotely through the NIH. Following completion of baseline assessments, participants will complete a 5-min VR intervention via telehealth using a head-mounted immersive device while under supervision of the research team. Following the intervention, over the course of 1 month patients can use VR at their discretion with follow-up assessments done immediately post-VR intervention, as well as 1 week and 4 weeks later. Additionally, a qualitative phone interview will be conducted to assess patient satisfaction with the intervention. DISCUSSION: Use of immersive VR is an innovative interventional approach to target distress and scanxiety symptoms in PBT patients who are at high risk for experiencing these symptoms leading into their clinical appointments. Findings from this study may inform design of a future multicenter randomized VR trial for PBT patients and may aid in development of similar interventions for other oncology populations. TRIAL REGISTRATION: Clinicaltrials.gov (NCT04301089), registered 9 March 2020.


Asunto(s)
Neoplasias Encefálicas , Terapia de Exposición Mediante Realidad Virtual , Humanos , Terapia de Exposición Mediante Realidad Virtual/métodos , Estudios de Factibilidad , Ansiedad/etiología , Ansiedad/terapia , Trastornos de Ansiedad , Neoplasias Encefálicas/terapia , Ensayos Clínicos Controlados Aleatorios como Asunto , Estudios Multicéntricos como Asunto , Ensayos Clínicos Fase II como Asunto
5.
Aust Health Rev ; 47(2): 239-245, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: covidwho-2293650

RESUMEN

Objective Phase II cardiac rehabilitation (CR) reduces cardiovascular risk factors, morbidity and mortality after a cardiac event. Traditional Australian CR programs are located in metropolitan areas and delivered by an expert, multidisciplinary team. Referral and uptake barriers for people living in rural and remote locations are significantly affected by geographical isolation. This scoping review aimed to explore how phase II CR services in rural and remote Australia are being delivered. Methods A scoping review was conducted to obtain all published literature relating to CR service delivery for people living in rural and remote Australia. A literature search of the following databases was performed in December 2021: Cumulative Index to Nursing and Allied Health Literature, Embase, the Physiotherapy Evidence Database, and PubMed. Results Six articles met the inclusion criteria. Study designs varied and included mixed methods, cross-sectional design and narrative review. Overall, literature relating to CR programs in rural and remote Australia was limited. Three themes were apparent: (1) barriers to the delivery of phase II CR in rural and remote Australia remain; (2) community centre-based programs do not reach all people in rural and remote Australia; and (3) alternative models of CR are underutilised. Conclusions Phase II CR programs in rural and remote Australia do not align with current recommendations for service delivery. The use of technology as a primary or adjunct model of delivery to support people living in rural and remote Australia needs to be further developed and implemented. Further research exploring barriers to the uptake of alternative models of CR delivery is recommended.


Asunto(s)
Rehabilitación Cardiaca , Medicina , Servicios de Salud Rural , Humanos , Australia , Estudios Transversales , Población Rural , Ensayos Clínicos Fase II como Asunto
6.
PLoS One ; 18(3): e0281674, 2023.
Artículo en Inglés | MEDLINE | ID: covidwho-2258127

RESUMEN

Non-alcoholic steatohepatitis (NASH) is the progressive form of nonalcoholic fatty liver disease (NAFLD) and a disease with high unmet medical need. Platform trials provide great benefits for sponsors and trial participants in terms of accelerating drug development programs. In this article, we describe some of the activities of the EU-PEARL consortium (EU Patient-cEntric clinicAl tRial pLatforms) regarding the use of platform trials in NASH, in particular the proposed trial design, decision rules and simulation results. For a set of assumptions, we present the results of a simulation study recently discussed with two health authorities and the learnings from these meetings from a trial design perspective. Since the proposed design uses co-primary binary endpoints, we furthermore discuss the different options and practical considerations for simulating correlated binary endpoints.


Asunto(s)
Enfermedad del Hígado Graso no Alcohólico , Humanos , Enfermedad del Hígado Graso no Alcohólico/tratamiento farmacológico , Ensayos Clínicos Fase II como Asunto , Proyectos de Investigación , Determinación de Punto Final
7.
PLoS One ; 18(2): e0279830, 2023.
Artículo en Inglés | MEDLINE | ID: covidwho-2236928

RESUMEN

BACKGROUND: Hmong men in Minnesota exhibit a high prevalence of gout and hyperuricemia. Although evidence of vitamin C's effectiveness as a treatment for gout is mixed, analysis of therapeutic benefit based on an individual's multiomic signature may identify predictive markers of treatment success. OBJECTIVES: The primary objective of the Hmong Microbiome ANd Gout, Obesity, Vitamin C (HMANGO-C) study was to assess the effectiveness of vitamin C on serum urate in Hmong adults with and without gout/hyperuricemia. The secondary objectives were to assess if 1) vitamin C impacts the taxonomic and functional patterns of microbiota; 2) taxonomic and functional patterns of microbiota impact vitamin C's urate-lowering effects; 3) genetic variations impact vitamin C's urate-lowering effects; 4) differential microbial biomarkers exist for patients with or without gout; and 5) there is an association between obesity, gut microbiota and gout/hyperuricemia. METHODS: This prospective open-labelled clinical trial was guided by community-based participatory research principles and conducted under research safety restrictions for SARS-CoV-2. We aimed to enroll a convenient sample of 180 Hmong adults (120 with gout/hyperuricemia and 60 without gout/hyperuricemia) who provided medical, demographic, dietary and anthropometric information. Participants took vitamin C 500mg twice daily for 8 weeks and provided pre-and post- samples of blood and urine for urate measurements as well as stool samples for gut microbiome. Salivary DNA was also collected for genetic markers relevant to uric acid disposition. EXPECTED RESULTS: We expected to quantify the impact of vitamin C on serum urate in Hmong adults with and without gout/hyperuricemia. The outcome will enhance our understanding of how gut microbiome and genomic variants impact the urate-lowering of vitamin C and associations between obesity, gut microbiota and gout/hyperuricemia. Ultimately, findings may improve our understanding of the causes and potential interventions that could be used to address health disparities in the prevalence and management of gout in this underserved population. TRIAL REGISTRATION: ClinicalTrials.gov NCT04938024 (first posted: 06/24/2021).


Asunto(s)
COVID-19 , Gota , Hiperuricemia , Microbiota , Masculino , Adulto , Humanos , Ácido Úrico , Ácido Ascórbico/uso terapéutico , Estudios Prospectivos , COVID-19/complicaciones , SARS-CoV-2 , Gota/tratamiento farmacológico , Gota/epidemiología , Gota/genética , Supresores de la Gota/uso terapéutico , Obesidad/epidemiología , Obesidad/genética , Obesidad/complicaciones , Vitaminas/uso terapéutico , Microbiota/genética , Ensayos Clínicos Fase II como Asunto
8.
BMJ Open ; 12(12): e067251, 2022 12 20.
Artículo en Inglés | MEDLINE | ID: covidwho-2193801

RESUMEN

INTRODUCTION: Sepsis is a major cause of death among hospitalised patients. Accumulating evidence suggests that immune response during sepsis cascade lies within a spectrum of dysregulated host responses. On the one side of the spectrum there are patients whose response is characterised by fulminant hyperinflammation or macrophage activation-like syndrome (MALS), and on the other side patients whose immune response is characterised by immunoparalysis. A sizeable group of patients are situated between the two extremes. Recognising immune endotype is very important in order to choose the appropriate immunotherapeutic approach for each patient resulting in the best chance to improve the outcome. METHODS AND ANALYSIS: ImmunoSep is a randomised placebo-controlled phase 2 clinical trial with a double-dummy design in which the effect of precision immunotherapy on sepsis phenotypes with MALS and immunoparalysis is studied. Patients are stratified using biomarkers. Specifically, 280 patients will be 1:1 randomly assigned to placebo or active immunotherapy as adjunct to standard-of-care treatment. In the active immunotherapy arm, patients with MALS will receive anakinra (recombinant interleukin-1 receptor antagonist) intravenously, and patients with immunoparalysis will receive subcutaneous recombinant human interferon-gamma. Τhe primary endpoint is the comparative decrease of the mean total Sequential Organ Failure Assessment score by at least 1.4 points by day 9 from randomisation. ETHICS AND DISSEMINATION: The protocol is approved by the German Federal Institute for Drugs and Medical Devices; the National Ethics Committee of Greece and by the National Organization for Medicines of Greece; the Central Committee on Research Involving Human Subjects and METC Oost Netherland for the Netherlands; the National Agency for Medicine and Medical Products of Romania; and the Commission Cantonale d'éthique de la recherche sur l'être human of Switzerland. The results will be submitted for publication in peer-reviewed journals. TRIAL REGISTRATION NUMBER: NCT04990232.


Asunto(s)
COVID-19 , Sepsis , Humanos , SARS-CoV-2 , Método Doble Ciego , Sepsis/terapia , Resultado del Tratamiento , Inmunoterapia , Ensayos Clínicos Controlados Aleatorios como Asunto , Ensayos Clínicos Fase II como Asunto
9.
Respir Res ; 23(1): 307, 2022 Nov 11.
Artículo en Inglés | MEDLINE | ID: covidwho-2119336

RESUMEN

BACKGROUND: Patients with interstitial lung disease (ILD) require regular physician visits and referral to specialist ILD clinics. Difficulties or delays in accessing care can limit opportunities to monitor disease trajectory and response to treatment, and the COVID-19 pandemic has added to these challenges. Therefore, home monitoring technologies, such as home handheld spirometry, have gained increased attention as they may help to improve access to care for patients with ILD. However, while several studies have shown that home handheld spirometry in ILD is acceptable for most patients, data from clinical trials are not sufficiently robust to support its use as a primary endpoint. This review discusses the challenges that were encountered with handheld spirometry across three recent ILD studies, which included home spirometry as a primary endpoint, and highlights where further optimisation and research into home handheld spirometry in ILD is required. Rate of decline in forced vital capacity (FVC) as measured by daily home handheld spirometry versus site spirometry was of primary interest in three recently completed studies: STARLINER (NCT03261037), STARMAP and a Phase II study of pirfenidone in progressive fibrosing unclassifiable ILD (NCT03099187). Unanticipated practical and technical issues led to problems with estimating FVC decline. In all three studies, cross-sectional correlations for home handheld versus site spirometry were strong/moderate at baseline and later timepoints, but longitudinal correlations were weak. Other issues observed with the home handheld spirometry data included: high within-patient variability in home handheld FVC measurements; implausible longitudinal patterns in the home handheld spirometry data that were not reflected in site spirometry; and extreme estimated rates of FVC change. CONCLUSIONS: Home handheld spirometry in ILD requires further optimisation and research to ensure accurate and reliable FVC measurements before it can be used as an endpoint in clinical trials. Refresher training, automated alerts of problems and FVC changes, and patient support could help to overcome some practical issues. Despite the challenges, there is value in incorporating home handheld spirometry into clinical practice, and the COVID-19 pandemic has highlighted the potential for home monitoring technologies to help improve access to care for patients with ILD.


Asunto(s)
COVID-19 , Enfermedades Pulmonares Intersticiales , Humanos , COVID-19/diagnóstico , Estudios Transversales , Pandemias , Enfermedades Pulmonares Intersticiales/diagnóstico , Enfermedades Pulmonares Intersticiales/tratamiento farmacológico , Espirometría , Capacidad Vital , Progresión de la Enfermedad , Ensayos Clínicos Fase II como Asunto
10.
Trials ; 23(1): 932, 2022 Nov 08.
Artículo en Inglés | MEDLINE | ID: covidwho-2108882

RESUMEN

BACKGROUND: COVID-19 poses a global health challenge with more than 325 million cumulative cases and above 5 million cumulative deaths reported till January 17, 2022, by the World Health Organization. Several potential treatments to treat COVID-19 are under clinical trials including antivirals, steroids, immunomodulators, non-specific IVIG, monoclonal antibodies, and passive immunization through convalescent plasma. The need to produce anti-COVID-19 IVIG therapy must be continued, alongside the current treatment modalities, considering the virus is still mutating into variants of concern. In this context, as the present study will exploit pooled diversified convalescent plasma collected from recovered COVID-19 patients, the proposed hyperimmune Anti-COVID-19 intravenous immunoglobulin (C-IVIG) therapy would be able to counter new infectious COVID-19 variants by neutralizing the virus particles. After the successful outcome of the phase I/II clinical trial of C-IVIG, the current study aims to further evaluate the safety and efficacy of single low dose C-IVIG in severe COVID-19 patients for its phase II/III clinical trial. METHODS: This is a phase II/III, adaptive, multi-center, single-blinded, randomized controlled superiority trial of SARS-CoV-2 specific polyclonal IVIG (C-IVIG). Patients fulfilling the eligibility criteria will be block-randomized using a sealed envelope system to receive either 0.15 g/Kg C-IVIG with standard of care (SOC) or standard of care alone in 2:1 ratio. The patients will be followed-up for 28 days to assess the primary and secondary outcomes. DISCUSSION: This is a phase II/III clinical trial evaluating safety and efficacy of hyperimmune anti-COVID-19 intravenous immunoglobulin (C-IVIG) in severe COVID-19 patients. This study will provide clinical evidence to use C-IVIG as one of the first-line therapeutic options for severe COVID-19 patients. TRIAL REGISTRATION: Registered at clinicaltrial.gov with NCT number NCT04891172 on May 18, 2021.


Asunto(s)
Tratamiento Farmacológico de COVID-19 , Infecciones por Coronavirus , Neumonía Viral , Humanos , SARS-CoV-2 , Betacoronavirus , Neumonía Viral/tratamiento farmacológico , Inmunoglobulinas Intravenosas/efectos adversos , Infecciones por Coronavirus/tratamiento farmacológico , Pandemias , Resultado del Tratamiento , Ensayos Clínicos Controlados Aleatorios como Asunto , Estudios Multicéntricos como Asunto , Ensayos Clínicos Fase II como Asunto , Ensayos Clínicos Fase III como Asunto , Sueroterapia para COVID-19
11.
BMJ Open ; 12(11): e061870, 2022 11 02.
Artículo en Inglés | MEDLINE | ID: covidwho-2097985

RESUMEN

INTRODUCTION: Long COVID-19, where symptoms persist 12 weeks after the initial SARS-CoV-2-infection, is a substantial problem for individuals and society in the surge of the pandemic. Common symptoms are fatigue, postexertional malaise and cognitive dysfunction. There is currently no effective treatment and the underlying mechanisms are unknown, although several hypotheses exist, with chronic inflammation as a common denominator. In prospective studies, hyperbaric oxygen therapy (HBOT) has been suggested to be effective for the treatment of similar syndromes such as chronic fatigue syndrome and fibromyalgia. A case series has suggested positive effects of HBOT in long COVID-19. This randomised, placebo-controlled clinical trial will explore HBOT as a potential treatment for long COVID-19. The primary objective is to evaluate if HBOT improves health-related quality of life (HRQoL) for patients with long COVID-19 compared with placebo/sham. The main secondary objective is to evaluate whether HBOT improves endothelial function, objective physical performance and short-term HRQoL. METHODS AND ANALYSIS: A randomised, placebo-controlled, double-blind, phase II clinical trial in 80 previously healthy subjects debilitated due to long COVID-19, with low HRQoL. Clinical data, HRQoL questionnaires, blood samples, objective tests and activity metre data will be collected at baseline. Subjects will be randomised to a maximum of 10 treatments with hyperbaric oxygen or sham treatment over 6 weeks. Assessments for safety and efficacy will be performed at 6, 13, 26 and 52 weeks, with the primary endpoint (physical domains in RAND 36-Item Health Survey) and main secondary endpoints defined at 13 weeks after baseline. Data will be reviewed by an independent data safety monitoring board. ETHICS AND DISSEMINATION: The trial is approved by the Swedish National Institutional Review Board (2021-02634) and the Swedish Medical Products Agency (5.1-2020-36673). Positive, negative and inconclusive results will be published in peer-reviewed scientific journals with open access. TRIAL REGISTRATION NUMBER: NCT04842448.


Asunto(s)
COVID-19 , Oxigenoterapia Hiperbárica , Humanos , Ensayos Clínicos Fase II como Asunto , COVID-19/terapia , Método Doble Ciego , Estudios Prospectivos , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto , SARS-CoV-2 , Resultado del Tratamiento , Síndrome Post Agudo de COVID-19
12.
Antiviral Res ; 208: 105450, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: covidwho-2085916

RESUMEN

FB2001 is a drug candidate that targets the main protease of SARS-CoV-2 via covalently binding to cysteine 145. In this study, we evaluated the inhibitory activities of FB2001 against several SARS-CoV-2 variants in vitro and in vivo (in mice), and we also evaluated the histopathological analysis and immunostaining of FB2001 on lung and brain which have been rarely reported. The results showed that FB2001 exhibited potent antiviral efficacy against several current SARS-CoV-2 variants in Vero E6 cells, namely, B.1.1.7 (Alpha): EC50 = 0.39 ± 0.01 µM, EC90 = 0.75 ± 0.01 µM; B.1.351 (Beta): EC50 = 0.28 ± 0.11 µM, EC90 = 0.57 ± 0.21 µM; B.1.617.2 (Delta): EC50 = 0.27 ± 0.05 µM, EC90 = 0.81 ± 0.20 µM; B.1.1.529 (Omicron): EC50 = 0.26 ± 0.06 µM and EC50 = 0.042 ± 0.007 µM (in the presence of a P-glycoprotein inhibitor). FB2001 remained potent against SARS-CoV-2 replication in the presence of high concentrations of human serum, which indicating that human serum had no significant effect on the in vitro inhibitory activity. Additionally, this inhibitor exhibited an additive effect against SARS-CoV-2 when combined with Remdesivir. Furthermore, FB2001 significantly reduced the SARS-CoV-2 copy numbers and titers in the lungs and brains in vivo, and alleviated the pathological symptoms. In addition, FB2001 could alleviated local bleeding, erythrocyte overflow, edema, and inflammatory cell infiltration in brain tissue, and inhibitors reducing viral titers and improving inflammation in the brain have been rarely reported. A physiologically based pharmacokinetic model was established and verified to predict the FB2001 concentration in human lungs. When FB2001 was administered at 200 mg twice a day for 5 days, the observed Ctrough ss in plasma and predicted Ctrough ss of lung total concentration were 0.163 and 2.5 µg/mL, which were approximately 9 and 132-fold higher than the EC50 of 0.019 µg/mL (0.042 µM) against Omicron variant. Taken together, our study suggests that FB2001 is a promising therapeutic agent in COVID-19 treatment and can be combined with remdesivir to achieve improved clinical outcomes. Owing to its good safety and tolerability in healthy human (NCT05197179 and NCT04766931), FB2001 has been approved for Phase II/III clinical trial (NCT05445934).


Asunto(s)
Tratamiento Farmacológico de COVID-19 , Infecciones por Coronavirus , Neumonía Viral , Animales , Humanos , Ratones , Antivirales/farmacología , Antivirales/uso terapéutico , Betacoronavirus , Infecciones por Coronavirus/tratamiento farmacológico , Pandemias , Neumonía Viral/tratamiento farmacológico , Inhibidores de Proteasas/farmacología , Inhibidores de Proteasas/uso terapéutico , SARS-CoV-2 , Ensayos Clínicos Fase II como Asunto , Ensayos Clínicos Fase III como Asunto
13.
Trials ; 23(1): 865, 2022 Oct 08.
Artículo en Inglés | MEDLINE | ID: covidwho-2064838

RESUMEN

BACKGROUND: In the ongoing COVID-19 pandemic, advanced age is a risk factor for a severe clinical course of SARS-CoV-2 infection. Thus, older people may benefit in particular from booster doses with potent vaccines and research should focus on optimal vaccination schedules. In addition to each individual's medical history, immunosenescence warrants further research in this population. This study investigates vaccine-induced immune response over 1 year. METHODS/DESIGN: EU-COVAT-1-AGED is a randomised controlled, adaptive, multicentre phase II protocol evaluating different booster strategies in individuals aged ≥75 years (n=600) already vaccinated against SARS-CoV-2. The initial protocol foresaw a 3rd vaccination (1st booster) as study intervention. The present modified Part B of this trial foresees testing of mRNA-1273 (Spikevax®) vs. BNT162b2 (Comirnaty®) as 4th vaccination dose (2nd booster) for comparative assessment of their immunogenicity and safety against SARS-CoV-2 wild-type and variants. The primary endpoint of the trial is to assess the rate of 2-fold antibody titre increase 14 days after vaccination measured by quantitative enzyme-linked immunosorbent assay (Anti-RBD-ELISA) against wild-type virus. Secondary endpoints include the changes in neutralising antibody titres (Virus Neutralisation Assay) against wild-type as well as against Variants of Concern (VOC) at 14 days and up to 12 months. T cell response measured by qPCR will be performed in subgroups at 14 days as exploratory endpoint. Biobanking samples are being collected for neutralising antibody titres against potential future VOC. Furthermore, potential correlates between humoral immune response, T cell response and neutralising capacity will be assessed. The primary endpoint analysis will be triggered as soon as for all patients the primary endpoint (14 days after the 4th vaccination dose) has been observed. DISCUSSION: The EU-COVAT-1-AGED trial Part B compares immunogenicity and safety of mRNA-1273 (Spikevax®) and BNT162b2 (Comirnaty®) as 4th SARS-CoV-2 vaccine dose in adults ≥75 years of age. The findings of this trial have the potential to optimise the COVID-19 vaccination strategy for this at-risk population. TRIAL REGISTRATION: ClinicalTrials.gov NCT05160766 . Registered on 16 December 2021. PROTOCOL VERSION: V06_0: 27 July 2022.


Asunto(s)
COVID-19 , Vacunas , Adulto , Anciano , Anticuerpos Neutralizantes , Anticuerpos Antivirales , Vacuna BNT162 , Bancos de Muestras Biológicas , COVID-19/prevención & control , Vacunas contra la COVID-19/efectos adversos , Ensayos Clínicos Fase II como Asunto , Humanos , Pandemias/prevención & control , Ensayos Clínicos Controlados Aleatorios como Asunto , SARS-CoV-2
14.
Trials ; 23(1): 737, 2022 Sep 02.
Artículo en Inglés | MEDLINE | ID: covidwho-2009446

RESUMEN

BACKGROUND: Despite the intense global research endeavour to improve the treatment of patients with COVID-19, the current therapy remains insufficient, resulting in persisting high mortality. Severe cases are characterised by a systemic inflammatory reaction driven by the release of pro-inflammatory cytokines such as IL-6 and tumour-necrosis-factor alpha (TNF-α). TNF-α-blocking therapies have proved beneficial in patients with chronic inflammatory diseases and could therefore pose a new treatment option in COVID-19. Hitherto, no results from randomised controlled trials assessing the effectiveness and safety of infliximab-a monoclonal antibody targeting TNF-α-in the treatment of COVID-19 have been published. METHODS: In this phase-2 clinical trial, patients with COVID-19 and clinical and laboratory signs of hyperinflammation will be randomised to receive either one dose of infliximab (5 mg/kg body weight) in addition to the standard of care or the standard of care alone. The primary endpoint is the difference in 28-day mortality. Further assessments concern the safety of infliximab therapy in COVID-19 and the influence of infliximab on morbidity and the course of the disease. For the supplementary scientific programme, blood and urine samples are collected to assess concomitant molecular changes. The Ethics Committee of the Friedrich Schiller University Jena (2021-2236-AMG-ff) and the Paul-Ehrlich-Institute (4513/01) approved the study. DISCUSSION: The results of this study could influence the therapy of patients with COVID-19 and affect the course of the disease worldwide, as infliximab is globally available and approved by several international drug agencies. TRIAL REGISTRATION: The trial was registered at clinicaltrials.gov ( NCT04922827 , 11 June 2021) and at EudraCT ( 2021-002098-25 , 19 May 2021).


Asunto(s)
Tratamiento Farmacológico de COVID-19 , Ensayos Clínicos Fase II como Asunto , Humanos , Infliximab/efectos adversos , Estudios Multicéntricos como Asunto , Ensayos Clínicos Controlados Aleatorios como Asunto , SARS-CoV-2 , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa
15.
Respir Res ; 23(1): 208, 2022 Aug 16.
Artículo en Inglés | MEDLINE | ID: covidwho-2002180

RESUMEN

BACKGROUND: Chronic obstructive pulmonary disease (COPD) and interstital lung disease (ILD) are incurable conditions characterised by airflow limitation, persisting respiratory symptoms, and progressive respiratory failure. People living with COPD or ILD often suffer from chronic and severe breathlessness, with limited treatment options and low engagement rates with current therapies. Group singing represents a potential community-based therapy to improve quality of life for patients with COPD or ILD and breathlessness. METHODS: This protocol papers describes SINFONIA, a parallel, double-arm, randomised, blinded-analysis, mixed-methods phase II/III trial of guided, online group singing that will be conducted over 24 months. Adults with confirmed COPD or ILD, on stable treatment for at least four weeks at time of recruitment, with a modified Medical Research Council (mMRC) dyspnoea score of two or greater, who are capable and willing to give consent, and not currently participating in pulmonary rehabilitation will be eligible to participate. Carers may optionally enrol in the trial. Data will be collected on quality of life, anxiety and depression, breathlessness, mastery of breathing, exercise tolerance, loneliness, healthcare utilisation, and carer quality of life (optional). Participants will be randomised 1:1 to intervention or control arms with intervention arm attending one 90 min, guided, online, group singing session per week for 12 weeks and control arm continuing routine care. Phase II of the trial aims to determine the feasibility and acceptability of guided, online group singing and will collect preliminary data on effectiveness. Phase III aims to determine whether guided, online group singing has an effect on quality of life with the primary outcome being a between arm difference in quality of life (36-item Short Form Survey) measured at 12 weeks. DISCUSSION: SINFONIA is the first study is the first of its kind in Australia and to our knowledge, the first to deliver the singing intervention program entirely online. Determining the feasibility, acceptability, and effectiveness of guided, online group singing is an important step towards improving low-cost, low-risk, community-based therapeutic options for patients living with COPD or ILD and breathlessness. TRIAL REGISTRATION: Phase II- ACTRN12621001274864 , registered 20th September 2021; Phase III- ACTRN12621001280897 , registered 22nd September 2021.


Asunto(s)
Enfermedades Pulmonares Intersticiales , Enfermedad Pulmonar Obstructiva Crónica , Canto , Adulto , Cuidadores , Ensayos Clínicos Fase II como Asunto , Disnea , Humanos , Enfermedad Pulmonar Obstructiva Crónica/diagnóstico , Enfermedad Pulmonar Obstructiva Crónica/terapia , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto
16.
BMC Geriatr ; 22(1): 666, 2022 08 13.
Artículo en Inglés | MEDLINE | ID: covidwho-2002116

RESUMEN

BACKGROUND: Mindfulness meditation is a form of mind-body intervention that has increasing scientific support for its ability to reduce age-related declines in cognitive functioning, improve affective health, and strengthen the neural circuitry supporting improved cognitive and affective health. However, the majority of existent studies have been pilot investigations with small sample sizes, limited follow-up data, and a lack of attention to expectancy effects. Here, we present the study design of a Phase I/II, efficacy trial-HealthyAgers trial-that examines the benefits of a manualized mindfulness-based stress reduction program in improving attentional control and reducing mind-wandering in older adults. METHODS: One hundred fifty older adults (ages 65-85 years) will be randomized into one of two groups: an eight-week mindfulness program or an eight-week, placebo-controlled, lifestyle education program. Behavioral and neuroimaging assessments are conducted before and after the training. Participants are then invited to booster sessions once every three months for a period of 12 months with post-intervention follow-up assessments conducted at 6-months and 12-months. The primary outcomes for the study are behavioral measures of attentional control and mind-wandering. Additional, secondary outcomes include network strength in an a priori defined neuromarker of attentional control, fluid and everyday cognition, emotion regulation strategy use, and markers of inflammation. DISCUSSION: This study will establish the efficacy of a group-based, low-cost mind-body intervention for the inter-related facets of attentional control and mind-wandering in older adults. Strengths of this study include a well-designed, placebo-controlled comparison group, use of web/mobile application to track study adherence, and longitudinal follow-up. TRIAL REGISTRATION: Clinicaltrials.gov (# NCT03626532 ). Registered August 4, 2018.


Asunto(s)
Atención , Atención Plena , Estrés Psicológico , Anciano , Anciano de 80 o más Años , Atención/fisiología , Ensayos Clínicos Fase I como Asunto , Ensayos Clínicos Fase II como Asunto , Humanos , Atención Plena/métodos , Ensayos Clínicos Controlados Aleatorios como Asunto , Proyectos de Investigación , Estrés Psicológico/prevención & control , Estrés Psicológico/psicología
17.
Rev Bras Ter Intensiva ; 34(1): 44-55, 2022.
Artículo en Portugués, Inglés | MEDLINE | ID: covidwho-1988374

RESUMEN

Repurposed drugs are important in resource-limited settings because the interventions are more rapidly available, have already been tested safely in other populations and are inexpensive. Repurposed drugs are an effective solution, especially for emerging diseases such as COVID-19. The REVOLUTIOn trial has the objective of evaluating three repurposed antiviral drugs, atazanavir, daclatasvir and sofosbuvir, already used for HIV- and hepatitis C virus-infected patients in a randomized, placebo-controlled, adaptive, multiarm, multistage study. The drugs will be tested simultaneously in a Phase II trial to first identify whether any of these drugs alone or in combination reduce the viral load. If they do, a Phase III trial will be initiated to investigate if these medications are capable of increasing the number of days free respiratory support. Participants must be hospitalized adults aged ≥ 18 years with initiation of symptoms ≤ 9 days and SpO2 ≤ 94% in room air or a need for supplemental oxygen to maintain an SpO2 > 94%. The expected total sample size ranges from 252 to 1,005 participants, depending on the number of stages that will be completed in the study. Hence, the protocol is described here in detail together with the statistical analysis plan. In conclusion, the REVOLUTIOn trial is designed to provide evidence on whether atazanavir, daclatasvir or sofosbuvir decrease the SARS-CoV-2 load in patients with COVID-19 and increase the number of days patients are free of respiratory support. In this protocol paper, we describe the rationale, design, and status of the trial. ClinicalTrials.gov identifier: NCT04468087.


Os medicamentos reaproveitados são importantes em contextos de recursos limitados porque as intervenções estão mais rapidamente disponíveis, já foram testadas com segurança em outras populações e são, em geral, mais baratas. Os medicamentos reaproveitados são uma solução eficaz, especialmente para doenças emergentes, como a COVID-19. O estudo REVOLUTIOn visa avaliar três medicamentos antivirais reaproveitados: atazanavir, daclatasvir e sofosbuvir, já utilizados em pacientes infectados pelo HIV ou pelo vírus da hepatite C, em um estudo randomizado, controlado por placebo, adaptativo, multibraço e em múltiplos estágios. Os medicamentos serão testados simultaneamente em um ensaio de Fase II para primeiro identificar se algum deles, isoladamente ou em combinação, reduz a carga viral. Se reduzirem, será iniciado um estudo de Fase III para investigar se tais medicamentos são capazes de aumentar o número de dias sem suporte respiratório. Os participantes devem ser adultos hospitalizados com idade ≥ 18 anos com início dos sintomas ≤ 9 dias e saturação de oxigênio ≤ 94% em ar ambiente ou necessidade de oxigênio suplementar para manter saturação de oxigênio > 94%. O tamanho total esperado da amostra varia entre 252 e 1.005 participantes, dependendo do número de estágios que serão concluídos no estudo. Assim, o protocolo é aqui descrito em detalhes, juntamente do plano de análise estatística. Em conclusão, o estudo REVOLUTIOn foi concebido para fornecer evidências se o atazanavir, o daclatasvir ou o sofosbuvir reduzem a carga viral de SARS-CoV-2 em pacientes com COVID-19 e aumentam o número de dias em que os pacientes ficam sem suporte respiratório. Neste artigo de protocolo, descrevem-se a fundamentação, o desenho e a situação do ensaio. Identificador do ClinicalTrials.gov: NCT04468087.


Asunto(s)
Tratamiento Farmacológico de COVID-19 , Adulto , Antivirales/uso terapéutico , Sulfato de Atazanavir , Brasil , Ensayos Clínicos Fase II como Asunto , Ensayos Clínicos Fase III como Asunto , Humanos , Estudios Multicéntricos como Asunto , Ensayos Clínicos Controlados Aleatorios como Asunto , SARS-CoV-2 , Sofosbuvir , Resultado del Tratamiento
18.
Expert Opin Emerg Drugs ; 27(2): 187-209, 2022 06.
Artículo en Inglés | MEDLINE | ID: covidwho-1965653

RESUMEN

INTRODUCTION: Ventilatory management and general supportive care of acute respiratory distress syndrome (ARDS) in the adult population have led to significant clinical improvements, but morbidity and mortality remain high. Pharmacologic strategies acting on the coagulation cascade, inflammation, oxidative stress, and endothelial cell injury have been targeted in the last decade for patients with ARDS, but only a few of these have shown potential benefits with a meaningful clinical response and improved patient outcomes. The lack of availability of specific pharmacologic treatments for ARDS can be attributed to its complex pathophysiology, different risk factors, huge heterogeneity, and difficult classification into specific biological phenotypes and genotypes. AREAS COVERED: In this narrative review, we briefly discuss the relevance and current advances in pharmacologic treatments for ARDS in adults and the need for the development of new pharmacological strategies. EXPERT OPINION: Identification of ARDS phenotypes, risk factors, heterogeneity, and pathophysiology may help to design clinical trials personalized according to ARDS-specific features, thus hopefully decreasing the rate of failed clinical pharmacologic trials. This concept is still under clinical investigation and needs further development.


Asunto(s)
Síndrome de Dificultad Respiratoria , Ensayos Clínicos Fase II como Asunto , Humanos , Inflamación , Síndrome de Dificultad Respiratoria/tratamiento farmacológico , Factores de Riesgo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA