[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100618935":3},{"organization":4,"outcomesModule":7,"designInfo":26,"detailedDescription":29,"studyPopulation":30,"armGroups":31,"interventions":25,"overallOfficials":25,"centralContacts":44,"locations":53,"responsibleParty":66,"collaborators":68,"id":74,"slug":25,"hasResults":75,"nctId":76,"briefTitle":77,"officialTitle":77,"acronym":78,"eligibilityCriteria":79,"healthyVolunteers":75,"sex":80,"minAge":25,"maxAge":25,"enrollmentInfo":81,"targetDuration":84,"studyType":85,"phases":25,"briefSummary":86,"conditions":87,"keywords":25,"overallStatus":90,"whyStopped":25,"lastUpdateSubmitDate":91,"lastUpdatePostDateStruct":92,"startDateStruct":95,"completionDateStruct":97,"leadSponsor":99,"locationsCount":100},{"fullName":5,"class":6},"EPC Education s.r.o.","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":17,"otherOutcomes":25},[9,13],{"measure":10,"description":11,"timeFrame":12},"Redox Balance Assessed by Circulating Redox-Related Biomarkers","Assessment of redox balance using circulating redox-related biomarkers measured in blood-derived samples. Biomarker levels will be compared across opioid exposure cohorts to evaluate associations between opioid type and redox balance.","At baseline (at enrollment)",{"measure":14,"description":15,"timeFrame":16},"Association Between Genetic Variants Related to Opioid Metabolism and Opioid-Related Adverse Effects","Assessment of the association between selected genetic variants related to opioid metabolism and signaling and the occurrence of opioid-related adverse effects and treatment intolerance across opioid exposure cohorts.","From enrollment to 12 months after enrollment",[18,21],{"measure":19,"description":20,"timeFrame":12},"Chronification Risk Assessment","Assessment of the risk of pain chronification using a validated pain chronification risk assessment questionnaire in adults receiving opioid therapy.",{"measure":22,"description":23,"timeFrame":24},"Pain Severity and Interference Assessed by the Brief Pain Inventory","Assessment of pain severity and pain-related interference with daily activities using the Brief Pain Inventory (BPI) questionnaire.","At baseline and during follow-up up to 12 months after enrollment",null,{"allocation":25,"interventionModel":25,"interventionModelDescription":25,"primaryPurpose":25,"observationalModel":27,"timePerspective":28,"maskingInfo":25},"COHORT","PROSPECTIVE","Opioids are widely used for the management of acute and chronic pain; however, prolonged opioid exposure has been associated with a range of systemic effects beyond analgesia. Increasing evidence suggests that oxidative stress and alterations in redox balance may play a role in the biological effects of opioids, potentially contributing to tissue damage, inflammation, and other adverse outcomes.\n\nThe OpioidRedoxStudy II is an observational study designed to further investigate the association between opioid use and redox balance in adults. This study builds on previous findings by focusing on redox-related biomarkers that reflect oxidative and antioxidative processes in the human body. The study does not involve any experimental intervention, randomization, or modification of participants' current medical treatment.\n\nParticipants using opioids will be assessed using biological samples collected according to the study protocol. These samples will be analyzed for markers related to redox balance. In addition, relevant clinical, demographic, and opioid exposure data will be collected to allow for exploratory analyses of associations between opioid use patterns and redox-related measures.\n\nThe primary objective of this study is to characterize the relationship between opioid exposure and redox balance in adults. Secondary objectives include exploring potential associations between redox-related biomarkers and clinical characteristics. The findings of this study are intended to contribute to a better understanding of the biological effects of opioid use and to support future research aimed at reducing opioid-related harm.","The study population consists of adult patients receiving opioid therapy as part of routine clinical care. Participants are treated with tramadol, tapentadol, morphine, fentanyl, or buprenorphine and are enrolled into predefined observational cohorts based on the type of opioid used. The study population includes individuals with ongoing opioid exposure who are able to provide informed consent and comply with study procedures.",[32,35,38,41],{"label":33,"type":25,"description":34,"interventionNames":25},"Group 1","Tramadol Cohort",{"label":36,"type":25,"description":37,"interventionNames":25},"Group 2","Tapentadol Cohort",{"label":39,"type":25,"description":40,"interventionNames":25},"Group 3","Buprenorphine - Morphin Cohort",{"label":42,"type":25,"description":43,"interventionNames":25},"Group 4","Fentanyl Cohort",[45,50],{"name":46,"role":47,"phone":48,"phoneExt":25,"email":49},"Ladislav Kocan, assoc. Prof MD","CONTACT","00421557891100","europainclinicsstudy@mail.com",{"name":51,"role":47,"phone":25,"phoneExt":25,"email":52},"Janka Vaskova, Prof. Dr. PhD.","janka.vaskova@upjs.sk",[54],{"facility":55,"status":25,"city":56,"state":25,"zip":57,"country":58,"countryCode":59,"cosmosGeoPoint":60,"geoPoint":65,"contacts":25},"University of Pavol JoSef Safarik","Košice","04011","Slovakia","SK",{"type":61,"coordinates":62},"Point",[63,64],21.25802,48.71441,{"lat":64,"lon":63},{"type":67,"investigatorFullName":25,"investigatorTitle":25,"investigatorAffiliation":25,"oldNameTitle":25,"oldOrganization":25},"SPONSOR",[69,71],{"name":70,"class":6},"Pavol Jozef Safarik University",{"name":72,"class":73},"F.D.Roosevelt Banska Bystrica Slovak Republic","UNKNOWN","100618935",false,"NCT07338084","OpioidRedoxStudyII","ORRS","Inclusion Criteria:\n\n* Adults aged 18 years or older\n* Receiving opioid therapy (tramadol, tapentadol, morphine, fentanyl, or buprenorphine) as part of routine clinical care\n* Stable opioid treatment for at least a predefined minimum period prior to enrollment (according to the study protocol)\n* Ability to provide written informed consent\n* Ability to comply with study procedures, including blood sampling and completion of questionnaires\n\nExclusion Criteria:\n\n* Acute opioid intoxication or withdrawal at the time of enrollment\n* Use of investigational drugs or participation in another interventional clinical trial that could interfere with study outcomes\n* Severe acute illness or unstable medical condition that, in the investigator's judgment, would interfere with study participation\n* Known pregnancy or breastfeeding\n* Inability to provide informed consent\n* Any condition that, in the opinion of the investigator, would make participation unsafe or compromise the quality of the collected data","ALL",{"count":82,"type":83},120,"ESTIMATED","3 Years","OBSERVATIONAL","This observational study aims to examine the relationship between opioid use and redox balance in adults. Redox balance reflects the level of oxidative stress in the body, which is known to play an important role in many biological processes and diseases.\n\nParticipants who use opioids will be included in the study. No experimental treatment or changes to current medical care will be provided as part of this study. Biological samples may be collected to assess redox-related biomarkers, and relevant clinical and demographic information will be recorded.\n\nThe results of this study are expected to improve understanding of how opioid exposure is associated with redox balance in adults. This information may help inform future research on the biological effects of opioids and potential strategies to reduce harm associated with long-term opioid use.",[88,89],"Oxidative Stress","Opioid Use","NOT_YET_RECRUITING","2026-01-03",{"date":93,"type":94},"2026-01-13","ACTUAL",{"date":96,"type":83},"2026-06-30",{"date":98,"type":83},"2029-12-31",{"name":5,"class":6},1]