Study Protocols Research Articles

Generating synthetic data from administrative health records for drug safety and effectiveness studies.

Administrative health records (AHRs) are used to conduct population-based post-market drug safety and comparative effectiveness studies to inform healthcare decision making. However, the cost of data extraction, and the challenges associated with privacy and securing approvals can make it challenging for researchers to conduct methodological research in a timely manner using real data. Generating synthetic AHRs that reasonably represent the real-world data are beneficial for developing analytic methods and training analysts to rapidly implement study protocols. We generated synthetic AHRs using two methods and compared these synthetic AHRs to real-world AHRs. We described the challenges associated with using synthetic AHRs for real-world study. The real-world AHRs comprised prescription drug records for individuals with healthcare insurance coverage in the Population Research Data Repository (PRDR) from Manitoba, Canada for the 10-year period from 2008 to 2017. Synthetic data were generated using the Observational Medical Dataset Simulator II (OSIM2) and a modification (ModOSIM). Synthetic and real-world data were described using frequencies and percentages. Agreement of prescription drug use measures in PRDR, OSIM2 and ModOSIM was estimated with the concordance coefficient. The PRDR cohort included 169,586,633 drug records and 1,395 drug types for 1,604,734 individuals. Synthetic data for 1,000,000 individuals were generated using OSIM2 and ModOSIM. Sex and age group distributions were similar in the real-world and synthetic AHRs. However, there were significant differences in the number of drug records and number of unique drugs per person for OSIM2 and ModOSIM when compared with PRDR. For the average number of days of drug use, concordance with the PRDR was 16% (95% confidence interval [CI]: 12%-19%) for OSIM2 and 88% (95% CI: 87%-90%) for ModOSIM. ModOSIM data were more similar to PRDR than OSIM2 data on many measures. Synthetic AHRs consistent with those found in real-world settings can be generated using ModOSIM. Synthetic data will benefit rapid implementation of methodological studies and data analyst training.

Analysis of sleep/wake cycles in zebrafish larvae

Zebrafish larvae are a model organism increasingly used in the study of the effect of neuroactive chemicals on vertebrate sleep/wake cycles. Sleep disturbances have a negative impact on mood, cognition and overall health. Here we present a protocol to assess over 24 h sleep/wake cycles in zebrafish larvae subjected to 12 h light/dark periods in 48-well plates, using video-tracking technologies. The protocol can be used to determine if the exposure to environmental pollutants or drugs can lead to sleep disturbances. The results on the effect of the tire rubber-derived 6PPD-quinone on zebrafish sleep/wake cycles presented here demonstrate the suitability of using this protocol in fish neurotoxicity studies. This protocol provides a new relevant tool to be used in the pharmacology and toxicology fields.

Repeated Levosimendan Infusions in the Management of Advanced Heart Failure: Review of the Evidence and Meta-analysis of the Effect on Mortality.

In the latest years, several studies described the impact of repetitive/intermittent i.v. levosimendan treatment in the management of advanced heart failure. For this updated review, we systematically searched the literature for clinical trials, registries , and real-world data and identified 31 studies that we commented in a narrative review: 3814 patients were described, of whom 1744 were treated repetitively with levosimendan. On the basis of the nature of the study protocols and of the end points, out of those studies, we further selected 9 that had characteristics, making them suitable for a meta-analysis on mortality. This short list describes data from 680 patients (of whom 399 received repeated doses of levosimendan) and 110 death events (of which 50 occurred in the levosimendan cohort). In the meta-analysis, repetitive/intermittent therapy with i.v. levosimendan was associated with a significant reduction in mortality at the longest time point available: 50 of 399 (12.5%) versus 60 of 281 (21.4%) in the control arms, with a risk ratio of 0.62 (95% confidence interval, 0.42-0.90; P < 0.01). In a sensitivity analysis, removing each trial and reanalyzing the remaining data set did not change the trend, magnitude, or significance of the results. A visual inspection of the funnel plot did not suggest publication bias. The results provide a very strong rationale for continuing to investigate the repetitive use of levosimendan in patients with advanced heart failure by properly powered regulatory clinical trials. Meanwhile, it seems that the use of repetitive/intermittent i.v. levosimendan infusions has become one of the few effective options for preserving the hemodynamic and symptomatic balance in such patients.

Defining oligometastatic pancreatic cancer: a systematic review and critical synthesis of consensus

Small retrospective series suggest that local consolidative treatment (LCT) may improve survival in oligometastatic pancreatic ductal adenocarcinoma (PDAC). However, no uniform definition of oligometastatic disease (OMD) in PDAC exists; this impedes meaningful conclusions. A systematic literature search using PubMed, Web of Science, and Cochrane CENTRAL registries for studies and protocols reporting on definitions and/or LCT of OMD in PDAC was performed. The primary endpoint was the definition of OMD. Levels of agreement were categorized as consensus (≥75% agreement between studies), fair agreement (50%-74%), and absent/poor agreement (<50%). After screening of 5374 abstracts, the full text of 218 studies was assessed, of which 76 were included in the qualitative synthesis. The majority of studies were retrospective (n= 66, 87%), two were prospective studies and eight were study protocols. Studies investigated mostly liver (n= 38, 51%) and lung metastases (n= 15, 20%). Across studies, less than one-half (n= 32, 42%) reported a definition of OMD, while 44 (58%) did not. Involvement was limited to a single organ (consensus). Additional criteria for defining OMD were the number of lesions (consensus), metastatic site (poor agreement), metastatic size (poor agreement), treatment possibilities (poor agreement), and biomarker response (poor agreement). Liver OMD could involve three or fewer lesions (consensus) and synchronous disease (fair agreement), while lung metastases could involve two or fewer lesions and metachronous disease (consensus). The large majority of studies were at a high risk of bias or did not include any control groups. Definitions of OMD were not used or varied widely between studies hampering across-study comparability and highlighting an unmet need for a consensus. The present study is part of a multistep process that aims to develop an interdisciplinary consensus on OMD in pancreatic cancer.

Antioxidant, carbonic anhydrase inhibition and diuretic activity of Leptadenia pyrotechnica Forssk. Decne

BackgroundLeptadenia pyrotechnica Forssk. Decne is a member of family Apocynaceae and locally known as ‘Khipp’. It is found in dry, sandy habitat of Pakistan and in several other regions around the world including Asia, Tropical Africa, Western Gulf and Mediterranean countries. It has nutritional value, containing 4 % lipids, 23 % proteins, 28 % carbohydrates, 4 % fibers, vitamin E and several minerals. Traditionally, this plant has been used by several communities for pain, different inflammatory and kidney disorders. Ethno-botanical studies have reported the use of L. pyrotechnica in nephrolithiasis, kidney disorders and induction of diuresis, which requires a detailed pharmacological study to validate the folkloric use of L. pyrotechnica as diuretic. MethodsThe 70 % methanolic L. pyrotechnica (Lp.Cr) extract was prepared and qualitatively checked for the presence of various phytochemicals. Phenolic, flavonoid, tannin and saponin contents were quantified. GC-MS analysis of Lp.Cr was also performed. Antioxidant potential of Lp.Cr was evaluated by DPPH, ABTS and nitrite radical scavenging assays. CUPRAC and FRAP assay described the reducing potential of Lp.Cr. Diuretic activity was performed in both acute and prolonged models at different doses followed by the estimation of electrolytes, urea and creatinine levels. The mechanism of diuresis was described by pre-treatment with atropine, l-NAME, indomethacin and carbonic anhydrase inhibition. ResultsLp.Cr. indicated high phenolic and flavonoid contents which correlated with good antioxidant activity. GC-MS analysis showed the presence of 104 compounds from different phytochemical classes. Diuretic activity was performed at 10–300 mg/kg concentrations where the dose of 100 and 300 mg/kg showed good diuretic and saluretic activity comparable to furosemide. Lp.Cr exhibited diuresis both in acute and prolonged study protocols which can be attributed to carbonic anhydrase inhibition, effect on prostaglandins and cholinergic pathways. ConclusionL. pyrotechnica contained several phytochemicals and exhibited good antioxidant activity. It induced diuresis and saluretic activity which was comparable to furosemide at higher doses. Diuretic activity can be attributed to carbonic anhydrase inhibition, prostaglandin synthesis and cholinergic pathways.

Cognitive Safety is Largely Ignored in Clinical Drug Trials: A Study of Registered Study Protocols.

The number of reports on suspected drug-induced memory impairment submitted to the US Food and Drug Administration increased 30-fold from 2000 to 2022. Drugs are the most common cause of reversible dementia. However, there is very little research on drug-induced cognitive impairment. The aim of this study was to investigate if and how an assessment of cognitive safety was included in recent, registered, controlled, clinical drug trials. The clinical trials registry ( www. gov ) was searched for randomized controlled clinical trials with available study protocols. After excluding irrelevant trials such as surgical procedures, local or short-term treatment, and dietary supplements, 803 trials were included in this study. The protocols were manually reviewed for information on if, and how, cognitive safety had been assessed. Trial drugs were categorized into those targeting the central nervous system or not, as well as older and newer drugs. Methods used for the assessment of cognitive function were categorized into questionnaires, screening instruments, and neuropsychological tests. If the trial results were published, we examined whether the publication contained any data on cognitive safety that had emerged from the trial. The start dates of the screened trials ranged from 31 July, 2009, to 4 April, 2021. Out of the 803 trials, 52 (6.5%) actively assessed cognitive safety. The remaining trials relied solely on spontaneous reporting. Of 429 trials studying a new drug, 32 (7.5%) actively assessed cognitive safety. One hundred and fifty-eight trials examined drugs intended to, or known to have, pharmacological effects on the central nervous system. Of these, 21 (13.5%) assessed cognitive safety. Most of the trials that assessed cognitive safety used either crude screening tools or questionnaires. Cognitive safety is largely ignored by recent controlled clinical trials. This applies even to trials assessing new drugs and trials assessing central nervous system drugs. There is an urgent need for drug manufacturers, regulatory authorities, and the medical profession to address the cognitive safety of drugs.

High population frequencies of MICA copy number variations originate from independent recombination events.

MICA is a stress-induced ligand of the NKG2D receptor that stimulates NK and T cell responses and was identified as a key determinant of anti-tumor immunity. The MICA gene is located inside the MHC complex and is in strong linkage disequilibrium with HLA-B. While an HLA-B*48-linked MICA deletion-haplotype was previously described in Asian populations, little is known about other MICA copy number variations. Here, we report the genotyping of more than two million individuals revealing high frequencies of MICA duplications (1%) and MICA deletions (0.4%). Their prevalence differs between ethnic groups and can rise to 2.8% (Croatia) and 9.2% (Mexico), respectively. Targeted sequencing of more than 70 samples indicates that these copy number variations originate from independent nonallelic homologous recombination events between segmental duplications upstream of MICA and MICB. Overall, our data warrant further investigation of disease associations and consideration of MICA copy number data in oncological study protocols.

Infection of liver sinusoidal endothelial cells with Muromegalovirus muridbeta1 involves binding to neuropilin-1 and is dynamin-dependent.

Liver sinusoidal endothelial cells (LSEC) are scavenger cells with a remarkably high capacity for clearance of several blood-borne macromolecules and nanoparticles, including some viruses. Endocytosis in LSEC is mainly via the clathrin-coated pit mediated route, which is dynamin-dependent. LSEC can also be a site of infection and latency of betaherpesvirus, but mode of virus entry into these cells has not yet been described. In this study we have investigated the role of dynamin in the early stage of muromegalovirus muridbeta1 (MuHV-1, murid betaherpesvirus 1, murine cytomegalovirus) infection in mouse LSECs. LSEC cultures were freshly prepared from C57Bl/6JRj mouse liver. We first examined dose- and time-dependent effects of two dynamin-inhibitors, dynasore and MitMAB, on cell viability, morphology, and endocytosis of model ligands via different LSEC scavenger receptors to establish a protocol for dynamin-inhibition studies in these primary cells. LSECs were challenged with MuHV-1 (MOI 0.2) ± dynamin inhibitors for 1h, then without inhibitors and virus for 11h, and nuclear expression of MuHV-1 immediate early antigen (IE1) measured by immune fluorescence. MuHV-1 efficiently infected LSECs in vitro. Infection was significantly and independently inhibited by dynasore and MitMAB, which block dynamin function via different mechanisms, suggesting that initial steps of MuHV-1 infection is dynamin-dependent in LSECs. Infection was also reduced in the presence of monensin which inhibits acidification of endosomes. Furthermore, competitive binding studies with a neuropilin-1 antibody blocked LSEC infection. This suggests that MuHV-1 infection in mouse LSECs involves virus binding to neuropilin-1 and occurs via endocytosis.

Analgesic Efficacy of Non-Steroidal Anti-Inflammatory Drug Therapy in Horses with Abdominal Pain: A Systematic Review.

This systematic review aimed to identify the evidence concerning the analgesic efficacy of non-steroidal anti-inflammatory drugs to treat abdominal pain in horses, and to establish whether one non-steroidal anti-inflammatory drug could provide better analgesia compared to others. This systematic review was conducted following the "Systematic Review Protocol for Animal Intervention Studies". Research published between 1985 and the end of May 2023 was searched, using three databases, namely, PubMed, Embase, and Scopus, using the words equine OR horse AND colic OR abdominal pain AND non-steroidal anti-inflammatory drug AND meloxicam OR flunixin meglumine OR phenylbutazone OR firocoxib OR ketoprofen. Risk of bias was assessed with the SYRCLE risk of bias tool, and level of evidence scored according to the Oxford Centre for Evidence-based Medicine. A total of 10 studies met the inclusion criteria. From those only one study judged pain with a validated pain score, and a high risk of bias was identified due to the presence of selection, performance, and "other" types of bias. Therefore, caution is required in the interpretation of results from individual studies. To date, the evidence on analgesic efficacy to determine whether one drug is more potent than another regarding the treatment of abdominal pain in horses is sparse.

Exploring the health-related decision-making experiences of people with chronic kidney disease and their caregivers: A qualitative study.

This study aimed to explore the decision-making experience of patients with chronic kidney disease (CKD) and their caregivers. This was a qualitative descriptive study of the decision-making experiences of individuals with stage 3-end-stage CKD and their family caregivers. One-on-one, semistructured interviews were conducted using a guide developed and approved by a community advisory group. Data were analyzed using thematic analysis. Three themes were identified: (1) decisions triggered by declining health and broad in scope, (2) challenges to decision-making and (3) factors influencing decision-making. Participants' experiences with health-related decision-making demonstrated that decisions were triggered when health declined. Yet, decisions that impact disease progression were being made in stage 3. Decision-making was made difficult due to lack of information, complex co-morbidities, and poor resource utilization. However, the structure and nature of the medical appointment, supportive caregivers, and resources served to remove challenges. Decision-support interventions must train patients and caregivers to be empowered participants in answer-seeking behaviours upstream of advanced illness. This work was conducted in full collaboration with a community advisory board consisting of patients with CKD, caregivers and clinicians. These members are noted in the acknowledgement section, and those who worked with the team to develop the interview guide, study protocols, and manuscript preparation are included as authors. As part of their role, advisory members met monthly, providing input on recruitment, study progress, inclusion of diverse voices and added relevance to study findings.

An Overview of Physical Exercise Program Protocols and Effects on the Physical Function in Multiple Sclerosis: An Umbrella Review.

Multiple sclerosis is a disease that concerns a growing number of people, especially females. There are different interventions proposed for this population, and physical activity is one of them. A proper and well-structured physical activity program can be a cheap, feasible, and practical instrument to help this population improve their quality of life. Consequently, the present study aimed to analyze, through an umbrella review, published articles to evaluate the protocols and the effect of intervention on different types of multiple sclerosis and eventually to propose a standardized intervention for this population. Systematic reviews and meta-analyses of randomized controlled trials on multiple sclerosis and physical activity effects were searched for on the electronic databases PubMed, Web of Science, and Scopus up to 22 December 2022. The quality of the studies included was determined and the results were narratively analyzed. The included studies present heterogeneity in the population, in the study design and protocols, and in the outcomes evaluated. Most of the studies detected positive outcomes on the physical function of people with multiple sclerosis. This study highlights the necessity of future studies on a population with similar characteristics, adopting similar protocols to evaluate their feasibility and validity to make physical intervention prescribed as a medicine.

There’s no smoke without fire: A deep time perspective on the effects of fires on air quality, human health and habitability in the Palaeolithic and prehistory

The use and control of fire is arguably one of the most important technological advancements of the Homo genus. Prehistoric populations exploit the combustion properties of fires (light, heat and smoke) for daily tasks such as food preparation, insect repellent, extension of daylight hours and modification of technology. The habitual use of fire can however lead to significant health implications through sustained exposure to smoke which can affect air quality resulting in respiratory complications. While smoke is often an important tool in hunter-gatherer activities such as smoking meats, curing hides, accessing highly prized food items’ such as honey and as an insect repellent, to date, little research has been conducted on the actual levels of exposure to harmful toxins contained in smoke that Palaeolithic hunter-gatherers would have been exposed to during their daily lives. In this paper, we present a new methodological protocol for future studies wishing to examine the effects of smoke from open fires on air quality, human health and habitability in the Palaeolithic using environmental monitoring systems. We present the first systematic study of concentration levels of harmful particulate matter (PM2.5) in smoke relative to the use of other combustion properties of fires (light, smoke and radiative heat) from a wide range of fuels used in Palaeolithic fireplaces, recording different types of fires (smoking, glowing and flaming) and activity types (smoking food items, sleeping and cooking). Our empirical findings highlight significant variability in light and heat output, as well as concentrations of harmful particulate matter in smoke (PM2.5). We argue that this variation and the aim to minimise exposure to the harmful elements of smoke, likely influenced the placement of fixed fire features in habitation spaces whether open, semi-open and closed (outdoors, rock shelters, caves, huts and houses) relative to the use of combustion properties. Our results also show how human-environment interactions around fire, fuel and habitability (air quality) may have changed over time in some living structures from the Palaeolithic through to later time periods (Neolithic and Iron Age).

Clinical Outcomes of Tucidinostat Therapy for Relapsed/Refractory Adult T-Cell Leukemia-Lymphoma (ATL) in Clinical Practice

【Objective】 Tucidinostat, approved for relapsed/refractory adult T-cell leukemia-lymphoma (ATL) treatment in June 2021 in Japan, demonstrated an objective response rate (ORR) of 30.4%, progression-free survival (PFS) of 1.7 months (95% CI: 0.8-7.4), and overall survival (OS) of 7.9 months (95% CI: 2.3-18.0) in a phase IIb trial for 23 cases of relapsed/refractory adult T-cell leukemia-lymphoma (ATL) in Japan. We report the treatment results of this agent in Miyazaki Prefecture. 【Methods】 We retrospectively analyzed the treatment results of relapsed/refractory ATL patients who received Tucidinostat at 6 facilities within the Miyazaki prefecture, and HTLV-1 endemic area in southwest Japan, after its approval. All clinical procedures for patients were part of routine care, and the requirement for written patient consent was waived by the committee in view of the retrospective nature of this study. Approved study protocols were presented on the web site in an opt-out format, ensuring patients had the right to refuse participation in the study. In accordance with these protocols, clinical information was then collected. 【Results】 From October 2021 to July 2023, Tucidinostat was administered to 24 cases of relapsed/refractory ATL. The median age at the start of administration was 72.5 (41-85), with 13 cases of the acute type, 7 cases of the lymphoma type, and 4 cases of poor-prognosis chronic type. The median number of prior treatment regimens was 2 (1-4), with 19 cases of multi-drug combination chemotherapy, 18 cases of mogamulizumab, and 5 cases of oral chemotherapy. There were no cases of transplantation. The period from prior treatment to Tucidinostat administration was 3.2 months (0-27.5 months), and the disease stage at the start of Tucidinostat administration was relapse in 7 cases and refractory in 17 cases. The starting dose was 40mg/day (twice a week) in 19 cases and 20mg/day (twice a week) in 4 cases, with a median number of total treatment courses of 3 (1-20). Of the 24 cases,19 had their dose reduced or treatment suspended because of myelosuppression. The best treatment response was complete response(CR) in 5 cases, parcial response (PR) in 8 cases, Stable Disease(SD) in 8 cases, with an efficacy rate (CR/PR) of 54.2%. The PFS after the start of treatment was 3.7 months (1.8-7.8), and the OS after the start of treatment was 8.6 months. The reason for discontinuation of administration were progression disease in 15 cases, intolerance in 1 case (skin rash in 1 case), and severe complications in 1 case (cryptococcal meningitis). In the Cox proportional hazards model analysis, considering the clinical characteristics at the initiation of Tucidinostat, the initial sIL-2R level negatively impacted PFS. PFS was then stratified using an sIL-2R cutoff of 5000 U/mL, showing a Median Survival Time (MST) of PFS: 0.65 months for those below the cutoff versus 0.15 months for those above it, p=0.006 (log-rank).“A similar trend was observed for OS (Median OS: not reached vs. 0.53 months, p=0.032 (log-rank)). 【Conclusion】 In relapsed/refractory ATL, Tucidinostat achieved treatment results similar to those in the phase IIb trial in clinical practice. In particular, for cases with an sIL2-R value of less than 5000, it was suggested that Tucidinostat may be a meaningful treatment option.

Improving clinical trial consent form readability through artificial intelligence.

109 Background: High literacy levels are needed to understand oncology clinical trial (CT) informed consent forms (ICF), which represents a barrier to enrollment of older adults and diverse populations. ChatGPT-4 is an artificial intelligence chatbot that responds to user prompts and can summarize large amounts of text. We tested whether ChatGPT-4 could simplify CT information from ICFs. Methods: On May 22, 2023, we searched clinicaltrials.gov for interventional, therapeutic, NIH-funded, CTs involving adults with the 14 most prevalent cancer types. Only CTs with available study protocols that were currently recruiting, “enrolling by invitation”, and “active not recruiting” were included. Trials that were diagnostic, preventative, or supportive were excluded. Publicly available ICFs from the resulting CTs were downloaded and analyzed. Using the ChatGPT-4 plugin askyourpdf.com, we asked ChatGPT-4 to review each ICF and answer 8 questions recommended by the NCCN for patients considering a CT in a 6th grade literacy level. Our prompt included the following 8 questions: “1) What are the treatments used in the clinical trial? 2) Has the treatment been used for other types of cancer? 3) What are the risks and benefits of this treatment? 4) What side effects should I expect and how will they be managed? 5) How long will I be in the clinical trial? 6) Will I be able to get other treatment if this doesn’t work? 7) How will you know if the treatment is working? 8) Will the clinical trial cost me anything?” Reading level (readability) was assessed for both the ICFs and ChatGPT-4’s question responses using the validated Flesch-Kincaid (FK), Gunning Fog (GF), and SMOG indices using the online Readable App. Data was summarized with descriptive statistics and t-test was used to compare text reading levels between ICFs and ChatGPT-4’s answers. Results: Our search yielded 83 therapeutic oncology CTs, of which 70 had publicly available ICFs. ChatGPT-4 successfully analyzed 66 of the 70 ICFs (94.3%). The mean text reading levels of its answers were 6.2 (95% CI: 5.9-6.5), 8.6 (95% CI: 8.2-8.9), and 9.2 (95% CI: 8.9-9.4) based on FK, GF, and SMOG indices, respectively. Of 70 ICFs, 54 (77.1%) contained text that could be evaluated for readability analysis and were included in the analysis. The mean text reading levels was 7.9 (95% CI: 7.7-8.1), 9.3 (95% CI: 9.1-9.6), and 10.5 (95% CI: 10.2-10.8) based on FK, GF, and SMOG indices, respectively. ChatGPT-4’s text responses had a significantly lower reading level compared to ICFs text for all three readability indices (FK: p&lt;0.01, GF: p=0.02, SMOG: p&lt;0.01). Conclusions: ChatGPT-4 presented key information from oncology CT ICFs at a 6th to 9th grade reading level, which was significantly lower than the original ICFs. While further studies are needed to assess ChatGPT-4’s accuracy, this study shows its potential as tool for improving patients’ understanding of oncology CTs.

Effectiveness of Vaccines and Monoclonal Antibodies Against Respiratory Syncytial Virus: Generic Protocol for Register-Based Cohort Study.

Several immunization products are currently being developed against respiratory syncytial virus (RSV) for children, pregnant females, and older adults, and some products have already received authorization. Therefore, studies to monitor the effectiveness of these products are needed in the following years. To assist researchers to conduct postmarketing studies, we developed a generic protocol for register-based cohort studies to evaluate immunization product effectiveness against RSV-specific and nonspecific outcomes. To conduct a study on the basis of this generic protocol, the researchers can use any relevant databases or healthcare registers that are available at the study site.

The Role of Mucin Expression in the Diagnosis of Oesophago-Gastric Cancer: A Systematic Literature Review

Survival in oesophago-gastric cancer (OGC) is poor due to early diagnostic challenges. Non-invasive risk stratification may identify susceptible patients with pre-malignant or benign disease. Following diagnostic confirmation with endoscopic biopsy, early OGC may be treated sooner. Mucins are transmembrane glycoproteins implicated in OGC with potential use as biomarkers of malignant transformation. This systematic review defines the role of mucins in OGC diagnosis. A literature search of MEDLINE, Web of Science, Embase and Cochrane databases was performed following PRISMA protocols for studies published January 1960–December 2022. Demographic data and data on mucin sampling and analysis methods were extracted. The review included 124 studies (n = 11,386 patients). Gastric adenocarcinoma (GAc) was the commonest OG malignancy (n = 101) followed by oesophageal adenocarcinoma (OAc, n = 24) and squamous cell carcinoma (OSqCc, n = 10). Mucins MUC1, MUC2, MUC5AC and MUC6 were the most frequently implicated. High MUC1 expression correlated with poorer prognosis and metastases in OSqCc. MUC2 expression decreases during progression from healthy mucosa to OAc, causing reduced protection from gastric acid. MUC5AC was upregulated, and MUC6 downregulated in GAc. Mucin expression varies in OGC; changes may be epigenetic or mutational. Profiling upper GI mucin expression in OGC, with pre-malignant, benign and healthy controls may identify potential early diagnostic biomarkers.

4 Neurophenotypes and recovery trajectories following laboratory-confirmed SARS-CoV-2 infection

Objective:Cognitive sequelae are reported in 20-25% of patients following SARS-CoV-2 infection. It remains unclear whether post-infection sequelae cluster into a uniform cognitive syndrome. In this cohort study, we characterized post-COVID neuropsychological outcome clusters, identified factors associated with cluster membership, and examined 6-month recovery trajectories by cluster.Participants and Methods:The Mayo Clinic Institutional Review Board approved study protocols. Informed consent was obtained from all participants. Participants (&gt; 18 years old) were recruited from a hospital-wide registry of Mayo Clinic Florida patients who tested positive for SARS-CoV-2 infection from July 2020 to Feb 2022. We abstracted participant health history and COVID-19 disease severity (NIAID score) from the electronic health record and retrieved Area Deprivation Index (ADI) scores as a measure of neighborhood socioeconomic disadvantage. We assessed objective cognitive performance with the CNS Vital-Signs (CNSVS) and subjective neuropsychological symptoms with the Neuropsych Questionnaire-45 (NPQ-45). Results were used as input features in a K-means clustering analysis to derive neurophenotypes. Chi-square and analysis of variance (AnOvA) tests were used to identify clinical and sociodemographic factors associated with cluster membership. Participants repeated the CNS Vital Signs, NPQ-45, as well as the Medical Outcomes Survey (MOS SF-36) and a posttraumatic stress disorder (PTSD) checklist (PCL-C 17) 6 months following initial testing. Repeated-measures ANOVA was used to assess change in neurocognitive performance over time by cluster. Significance was set at P &lt; 0.05.Results:Our cohort consisted of 205 participants (171 ambulatory, 34 hospitalized) who completed post-acute outcome assessment a mean of 5.7 (± 3.8) weeks following testing positive for SARS-CoV-2. K-means clustering with elbow method fitting identified three subgroups (see figure). The first cluster (N = 31) is characterized by executive dysfunction, greater socioeconomic disadvantage, and higher rates of obesity. The second cluster (N = 32) is characterized by memory and speed impairment, higher COVID severity, prevalent anosmia (70%), and greater severity of memory complaints, depression, anxiety, and fatigue. The third and largest cluster (N = 142) is absent cognitive impairment. Approximately 39% of participants completed the 6-month outcome assessment (N=79). Regardless of cluster membership, verbal memory, psychomotor speed, and reaction time scores improved over time. Regardless of timepoint, cluster 1 (dysexecutive) showed lower scores on cognitive flexibility and complex attention and cluster 2 (memory-speed impaired) showed lower scores on verbal memory, psychomotor speed, and reaction time. Modeling of cluster by timepoint interactions showed a steeper slope of improvement in complex attention and cognitive flexibility in cluster 1 (dysexecutive). Cluster 3 (normal) showed significant improvement in fatigue while cluster 2 (memory-speed impaired) continued to report moderate-severe fatigue, worse medical outcomes, and higher PTSD symptom severity scores at six months.Conclusions:Most participants were cognitively normal or experienced cognitive recovery following SARS-CoV-2 infection. The 25-30% of participants who showed cognitive impairment cluster into two different neurophenotypes. The dysexecutive phenotype was associated with socioeconomic factors and medical comorbidities that are non-specific to COVID-19, while the amnestic phenotype was associated with COVID-19 severity and anosmia. These results suggest that cognitive sequelae following SARS-CoV-2 infection are not uniform. Deficits may be influenced by distinct patient- and disease-specific factors, necessitating differentiated treatment approaches.

Patient-centered collaborative research: Exploring perspectives on clinical meaningfulness in metastatic breast cancer with clinicians, patients, and caregivers.

338 Background: In metastatic breast cancer (mBC), treatment decision-making is informed by many factors including patient values, preferences, and care goals. Important to treatment decision-making is clinical meaningfulness, or the degree to which a treatment for mBC results in a meaningful change in the patient’s daily life, and clinically meaningful outcomes that are relevant to patients (e.g., survival, quality of life). However, patient and clinician perspectives and alignment on these concepts have not been well elucidated. Engaging patients and other key stakeholders as research collaborators is vital to guiding the delivery of high-quality cancer care focused on outcomes that patients considered meaningful. The aim of this work is to describe the implementation of an innovative multi-collaborator engagement with patient advocates and professional oncology societies to support a study examining perspectives on clinical meaningfulness in mBC treatment among clinicians, patients, and caregivers in the United States. Methods: This mixed-methods study utilizes qualitative semi-structured in-person and virtual focus groups to inform the development of collaborator-specific surveys on clinical meaningfulness in mBC. A multi-collaborator engagement approach was selected to support the conception, implementation, and completion of this study. Specifically, we have convened a collaboration with patient advocacy groups and professional membership organizations to engage researchers, patients, caregivers, and clinicians. The collaboration is designed to: i) facilitate the development of study protocols and key data collection documents; ii) review and reflect on findings and salience for relevant populations; and iii) participate in dissemination activities whereby collaborators co-create, co-present and discuss findings and their impact on clinical practice. Results: To date, we have partnered with four breast cancer patient advocacy groups representing sociodemographic diverse constituencies throughout the US and three oncology professional membership organizations. By describing how to implement these partnerships, we seek to present a collaboration roadmap that can be replicated and adapted to similar studies in oncology care delivery. Such a comprehensive and rigorous approach aims to enhance the quality of data collection and interpretation, generating evidence that will optimally improve patient-centered mBC care delivery and meaningful patient outcomes. Conclusions: Engaging patients and other key collaborators in research is important to generate clinically meaningful evidence to those involved in mBC treatment decision-making. This study offers a robust methodological approach for gaining insights into the delivery of patient-centered cancer care.

Operational changes to the lupus intervention fatigue trial as a result of COVID-19: An update to the study protocol

BackgroundThe coronavirus disease 2019 (COVID-19) global pandemic drastically impacted the health system and the research community. As a result, research institutions and funding agencies recommended a moratorium on conducting in-person research and study enrollment until protocol changes to protect participant safety were approved and implemented. We detail the operational modifications made to the Lupus Intervention Fatigue Trial (LIFT) protocol and summarize how we met the varied challenges created by COVID-19. MethodsWe evaluated study protocols and determined that scheduling, acquiring consent, in-person assessments and intervention baseline visits, patient reported outcomes, and data processing procedures needed modification. ResultsOperational modifications were made to ensure study progress while adhering to COVID-19 restrictions. Major changes included electronic consent, remote baseline visits for those in the intervention, self-report outcome measures at home via emailed weblinks, and telemedicine physician assessment visits. The collection of safety labs presented the largest challenge since this required an in-person visit to a laboratory. The study team elected to delay this up to one month after the physician assessment. All follow-up visits were completed, and no participants withdrew from the study. ConclusionLIFT was severely impacted by COVID-19. We provide insight into how our study protocol was modified without compromising the integrity of the primary and secondary outcomes of the study. The modifications utilized by the LIFT study resulted in efficiencies that will be included in a revised protocol and may serve as a useful example for other behavioral interventions to adapt their research studies.

The Effectiveness of Integrating Psychotherapy Into Overweight/Obesity Interventions on Youth’s Weight Status and Depressive Symptoms: A Narrative Review

Introduction: Childhood obesity and youth depression are serious ongoing global crises of the 21st century. Many researchers have often attributed this to the well-established association between them. Consequently, psychotherapies are increasingly being integrated into interventions to improve weight status and depression outcomes for individuals with overweight and/or obesity (OW/OB). However, the effectiveness of these interventions has not yet been reviewed for youth with OW/OB. Such youth tend to be at a higher risk of developing comorbid depressive symptoms, which can likely persist into adulthood. Therefore, this narrative review explored the effectiveness of psychotherapy integrations within OW/OB interventions on youth’s weight statuses and their depressive symptoms contemporaneously. Methods: Medline, Embase, PsycInfo, PubMed, and Scopus were accessed. English peer-reviewed empirical articles, reviews, meta-analyses, clinical trials, and pilot studies from the last ten years and those that investigated the effectiveness of OW/OB interventions integrated with psychotherapy among youth (5-18 years) were included. Keywords related to diet, psychotherapy, OW/OB, youth, and depression were used. Non-peer-reviewed sources, reviews lacking sufficient transparency in their methodology, editorials, letters, study protocols, commentaries, preprints, and dissertations were excluded. Results: Four studies, including two pilot studies, were included. Overall, we found high heterogeneity in their intervention components and conditions, study designs, participants, and results. Among youth, all studies found no significant improvements in weight status as per the authors’ set significance thresholds. Mixed results were obtained for the effect on youth’s depressive symptoms. Discussion: There is an alarming lack of recent literature investigating the impact of integrated evidence-based psychotherapies within OW/OB interventions on youth’s weight statuses and depressive symptoms. It is important to investigate their effectiveness in equipping youth with OW/OB with skills to make sustained lifestyle changes and cope with weight discrimination and depressive symptoms. We attributed the weak success of these interventions to the lack of cultural adaptations and standardization of study types, intervention structures, components, and conditions. Conclusion: It is important for researchers to continue investigating the success of such interventions on youth with OW/OB’s physical and mental outcomes simultaneously. This will further inform the interdisciplinary approach needed to deliver appropriate care to these youth.