Search Results for: Uso dei test del DNA tumorale circolante per i pazienti con cancro

Objective
To predict the level at a specified time and design personalised dosing, we proposed a method (Method 1) for estimating coagulation factor VIII (FVIII) pharmacokinetic (PK) parameters using 4 levels within 48 hours after administering a test dose.

Design
A retrospective study based on virtual populations and real patients.

Setting
A comprehensive hospital in China.

Participants
Virtual populations generated by Monte Carlo simulations and retrospectively collected real patient data.

Methods
PK profiles of FVIII after dosing in the virtual populations were generated from a published population PK model coupled with Monte Carlo simulation. The simulated coagulation factor levels were considered as the reference (Cref). FVIII levels at six sampling points after dosing were estimated with Method 1 and the method proposed by Lisheng Cai (Method 2) and compared with Cref. PK data from three patients with severe haemophilia A were retrospectively collected to further validate the accuracy of the two methods.

Results
In the adult group, the maximum mean deviations for Methods 1 and 2 were 0.43% (±0.35%) and –36.31% (±6.67%), with corresponding maximum root mean square errors (RMSE) of 0.12% and 28.44%, respectively. For the paediatric group, the maximum mean deviations for Methods 1 and 2 were 0.13% (±0.25%) and –34.27% (±6.74%), with maximum RMSEs of 0.05% and 25.33%, respectively. In three actual patients, mean deviations using Method 1 were 0.32%, 1.34% and 0.24%. Mean deviations using Method 2 were 13.37%, –16.86% and 56.66%.

Conclusion
The proposed method for estimating FVIII PK parameters and levels demonstrates high accuracy and has the potential for precision dosing.

Introduction
There is a need for early, non-invasive and inexpensive biomarkers for Alzheimer’s disease (AD), which could serve as a proxy measure in prevention and intervention trials that might eventually be suitable for mass screening. People with Down syndrome (DS) are the largest patient group whose condition is associated with a genetically determined increased risk of AD. The REVEAL study aims to examine changes in the structure and function of the eye in individuals with DS compared with those with mild cognitive impairment (MCI) and cognitively healthy control (HC) individuals. REVEAL will also explore whether these changes are connected to inflammatory markers previously associated with AD.

Methods and analysis
The protocol describes a cross-sectional, non-interventional, single-centre study recruiting three cohorts, including (1) participants with DS (target n=50; age range, 6–60 years), (2) participants with MCI (target n=50; age range, 50–80 years) and (3) HC participants (target n=50; age range, 50–80 years). The primary research objective is to profile retinal, choroidal and lenticular status using a variety of eye imaging modalities and retinal functional testing to determine potential associations with cognitive status. The REVEAL study will also measure and compare established blood markers for AD and proteomic and transcriptomic marker profiles between DS, MCI and HC groups. Between-group differences will be assessed with an independent sample t-test and 2 tests for normally distributed or binary measures, respectively. Multivariate regression analysis will be used to analyse parameters across all three cohorts. Data collection began in October 2023 and is expected to end in October 2025.

Ethics and dissemination
The study gained a favourable opinion from Health and Social Care Research Ethics Committee A (REC reference 22/NI/0158; approved on 2 December 2022; Amendment 22/0064 Amend 1, 5 April 2023; Amendment 22/0064 Amend 2; 23 May 2024; Amendment 22/0064 Amend 3; 25 June 2024; Amendment 22/0064 Amend 4; 16 January 2025; Amendment 22.0064 Amend 5; 9 May 2025; Amendment 22.0064 Amend 6; 9 June 2025). The study has also been reviewed and approved by the School of Biomedical Sciences Research Ethics Filter Committee within Ulster University. Findings from the REVEAL study will be presented to academic audiences at international conferences and peer-reviewed publications in targeted high-impact journals after data collection and analysis are complete. Dissemination activities will also include presentations at public events.

Introduction
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder primarily affecting motor neurons. In addition to motor impairments, ALS frequently involves cognitive and behavioural disturbances, including deficits in social cognition, which can impact interpersonal interactions and decision-making. Despite increasing recognition of these impairments, existing assessment tools often rely on static stimuli, limiting their ecological validity.

Methods and analysis
This cross-sectional, single-centre study aims to assess social cognition abilities in patients with ALS compared with healthy controls using a combination of dynamic and static neuropsychological tools. The primary outcome measure will be performance on the Movie for the Assessment of Social Cognition, an ecologically valid test evaluating theory of mind. Secondary outcomes will include emotion recognition (static and dynamic tasks: Ekman Faces and French Emotion Evaluation Test), mood assessments (Hospital Anxiety and Depression Scale) and clinical variables such as disease severity (ALS Functional Rating Scale-Revised), cognitive function (Edinburgh Cognitive and Behavioural Screen, Mini–Mental State Examination) and disease staging (King’s ALS Clinical Staging System). A total of 74 participants (37 patients with ALS and 37 matched healthy controls) will be recruited. Group differences will be analysed using analysis of variance, while regression models will explore associations between social cognitive deficits and clinical markers of ALS progression.

Ethics and dissemination
This study has been approved by the French Ethics Committee (CPP) Ouest I under reference 2020-A01213-36. Data collection and processing comply with French and European data protection regulations (GDPR, Loi Informatique et Libertés). Findings will be disseminated through peer-reviewed journals and scientific conferences and will contribute to improving neuropsychological assessment methods for ALS.

Trial registration number
NCT04406675.

Objectives
We aimed to explore the changes in oculomotor deficiencies during the follow-up of patients with multiple system atrophy (MSA) and Parkinson’s disease (PD), and to investigate the value of dynamic eye movement examination in their differential diagnosis.

Design
This was a cohort study conducted from 2017 to 2023.

Setting
The Movement Disorders Clinic at a tertiary hospital in Beijing, China.

Participants
56 patients with PD and 13 patients with MSA from an initial cohort of over 1100 with parkinsonism were included in the final longitudinal analysis.

Outcome measures
Multisystem evaluations were performed at baseline. Videonystagmography (VNG) was repeated to assess oculomotor dysfunction at baseline and during follow-up. Abnormalities in the fixation and gaze-holding test, without-fixation test, reflexive and memory-guided saccade tests, smooth pursuit test and optokinetic test were qualitatively and quantitatively recorded and statistically analysed.

Results
The median follow-up time of MSA (16 months) was significantly shorter than that of PD (27 months). In MSA, the incidence of abnormalities in fixation and gaze-holding tests (0% vs 30.8%, p=0.030), reflexive saccade tests (46.2% vs 84.6%, p=0.039, with slow saccades increasing from 7.7% to 46.2%, p=0.027) and smooth pursuit tests (38.5% vs 76.9%, p=0.047) increased significantly from baseline to the end of follow-up. In PD, no significant changes were revealed during follow-up.

Conclusions
MSA exhibited more rapid and prominent changes in fixation and gaze-holding tests, reflexive saccades and smooth pursuit tests than PD. Dynamic observation of oculomotor function may aid in the differential diagnosis of Parkinson’s syndrome.

Objectives
To investigate the effects of uric-acid-lowering therapy with febuxostat in asymptomatic hyperuricaemic patients with heart failure.

Methods
In this retrospective cohort analysis, we included consecutive hospitalised patients with heart failure and concomitant asymptomatic hyperuricaemia in Yangzhong People’s Hospital from 1 April 2018 through 1 April 2022. Febuxostat was used to lower serum uric acid. The primary endpoint was defined as a composite of cardiovascular death, recurrent hospitalisation and emergency room visit for cardiovascular (CV) reasons. Additional endpoints included changes in echocardiography measures, Kansas City Cardiomyopathy Questionnaire (KCCQ) scores and 6-minute walk test (6MWT) distance from baseline to the most recent clinic visit. Cox analysis was used to determine HR between febuxostat and the control group after adjustment for age, sex, body mass index, serum creatinine, atrial fibrillation and coronary heart disease and the Kaplan-Meier curve was used to describe survival.

Results
979 patients were included in the final analysis (505 in the febuxostat group vs 474 in the control group). In a follow-up duration of 16±9 months, uric acid was significantly lower in the febuxostat group compared with the control group (p

Per l’uso innovativo dell’IA nella scoperta di farmaci e vaccini

La nuova semplificazione sta cominciando ad avere effetti su milioni di pazienti cronici che ora hanno la possibilità di avere accesso subito a un farmaco salva vita nella farmacia sotto casa

Con una singola iniezione e dopo un mese i primi risultati

Introduction
The prevalence of food allergies, particularly IgE-mediated allergies, is rising in developed countries, with cashew nut allergy emerging as a significant public health concern due to its potential for severe anaphylaxis and frequent association with atopic disorders. Cashew nuts are among the most common allergens in Europe and Australia, often involving cosensitisation with pistachios, hazelnuts and other allergens. Diagnosis relies on clinical history, measurement of specific IgE (sIgE) levels, skin prick tests (SPT) and oral food challenges (OFCs). Current management strategies focus on allergen avoidance and emergency interventions, whereas oral immunotherapy (OIT) represents a promising approach to desensitisation. Recent studies, including the NUT CRACKER trial, have reported high desensitisation rates with cashew OIT, although these are associated with a risk of adverse events. This study introduces a novel randomised controlled trial aimed at evaluating the efficacy and safety of cashew immunotherapy in children.

Methods and analysis
This randomised, open-label, parallel-group trial, with a 2:1 allocation ratio, will be conducted at the Department of Paediatric Pneumology and Allergology, Medical University of Warsaw, Poland. Thirty-nine children, aged 4–17 years, with confirmed IgE-mediated cashew allergy via open OFC will be enrolled. Participants in the experimental group will undergo OIT, which involves gradually increasing doses of cashew protein up to a maintenance dose of 1200 mg. The duration of OIT will range from 12 to 60 weeks, depending on individual baseline tolerance. The control group will receive standard management, including strict cashew avoidance and emergency response strategies to accidental exposure, for 1 year.
The primary endpoint is to determine the proportion of participants tolerating a 4043 mg dose of cashew protein at the study’s end in the OIT group compared with the control group. Secondary outcomes include evaluating the safety profile of OIT, assessing changes in laboratory markers such as sIgE and IgG4 levels for cashew and the major cashew allergen Ana o 3, analysing basophil activation test responses and measuring changes in SPT wheal diameter at baseline and study completion.

Ethics and dissemination
The study has been approved by the Ethics Committee of the Medical University of Warsaw (approval number: KB/267/2023). Study findings will be published in peer-reviewed journals and presented at international conferences.

Trial registration number
NCT06328504.

Riccardi (Simeu), più a rischio pazienti cronici e anziani

This diagnostic study assesses the accuracy of an investigational blood-based circulating tumor DNA test for detection of colorectal cancer in an asymptomatic average-risk population.

This Viewpoint examines the urinary nitrite test and questions its effectiveness and relevance in distinguishing between urinary tract infection and asymptomatic bacteriuria.

Despite a significant decline in colorectal cancer (CRC) incidence and mortality over the past several decades in the US, CRC remains the second leading cause of cancer deaths. Most of these deaths could be prevented if the 42% of Americans aged 45 to 75 years who are not up to date with screening would participate. There is strong evidence supporting screening with lower intestinal endoscopy (ie, colonoscopy or flexible sigmoidoscopy) or repeated rounds of occult blood–based stool screening tests. These screening tests are effective in detecting cancer at early, curable stages as well as preventing cancer through detection and removal of advanced precancerous lesions, including adenomas and serrated colorectal lesions. Despite public awareness campaigns, organized screening (eg, programmatic mailed stool-based tests), and patient decision aids and navigation, participation is suboptimal, and closing the screening gap remains elusive. This gap may result from reluctance to complete screening due to inconvenience, discomfort, embarrassment, aversion to handling stool, or fear of complications. The ideal CRC screening test would be noninvasive and acceptable to those being screened, be highly sensitive for both early cancer and advanced precancerous lesions, have excellent specificity, and be widely accessible. All of the currently available CRC screening test options fall short of this ideal in at least 1 way, limiting their effectiveness. Thus, there is an ongoing search for more agreeable screening test options.

Discharge summaries are a form of communication between hospital-based and outpatient clinicians. In addition to providing an overview of the hospital course, discharge summaries frequently include information such as abnormal test results, necessary follow-up testing, and medication changes—critical information for ensuring safe continuity of care. Although discharge summaries are a recognized patient safety tool, they are also time-consuming to generate and contribute to the substantial administrative burden placed on clinicians—2 factors strongly associated with the national physician burnout crisis. Enter large language models (LLMs).

This Viewpoint examines the use of blood-based biomarkers to test for Alzheimer disease and outlines why they should not be the first or only tool used in screening for cognitive impairment.