Ignite Creation Date:
2025-12-24 @ 2:39 PM
Ignite Modification Date:
2026-04-26 @ 9:07 PM
Study NCT ID:
NCT02735759
Status:
WITHDRAWN
Last Update Posted:
2024-09-03
First Post:
2016-04-01
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Detecting Circulating Emboli in Patients with Acute Venous Thromboembolism
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}, 'conditionBrowseModule': {'meshes': [{'id': 'D054556', 'term': 'Venous Thromboembolism'}], 'ancestors': [{'id': 'D013923', 'term': 'Thromboembolism'}, {'id': 'D016769', 'term': 'Embolism and Thrombosis'}, {'id': 'D014652', 'term': 'Vascular Diseases'}, {'id': 'D002318', 'term': 'Cardiovascular Diseases'}]}}, 'protocolSection': {'designModule': {'phases': ['NA'], 'studyType': 'INTERVENTIONAL', 'designInfo': {'allocation': 'NON_RANDOMIZED', 'maskingInfo': {'masking': 'NONE'}, 'primaryPurpose': 'SCREENING', 'interventionModel': 'PARALLEL'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 0}}, 'statusModule': {'whyStopped': 'Required revisions were unable to be made to protocol.', 'overallStatus': 'WITHDRAWN', 'startDateStruct': {'date': '2018-07-01', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2018-07', 'completionDateStruct': {'date': '2018-07-01', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2024-08-29', 'studyFirstSubmitDate': '2016-04-01', 'studyFirstSubmitQcDate': '2016-04-07', 'lastUpdatePostDateStruct': {'date': '2024-09-03', 'type': 'ACTUAL'}, 'studyFirstPostDateStruct': {'date': '2016-04-13', 'type': 'ESTIMATED'}, 'primaryCompletionDateStruct': {'date': '2018-07-01', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Number of subjects that posses circulating emboli.', 'timeFrame': 'One year'}]}, 'oversightModule': {'isUsExport': False, 'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isUnapprovedDevice': True, 'isFdaRegulatedDevice': True}, 'conditionsModule': {'conditions': ['Venous Thromboembolism']}, 'descriptionModule': {'briefSummary': 'The purpose of this study is to further evaluate and adjust the photoacoustic flow cytometry device and its use in detecting circulating emboli.\n\nStudy Design: Cohort 1: Normal healthy volunteers will be enrolled to further adjust the device settings. Cohort 2: Use the Phatoacoustic flow cytometry (PAFC) to detect circulating emboli in vivo in patients with venous thromboembolism at diagnosis, during and after anticoagulation therapy.', 'detailedDescription': "Laser beam from the investigational device Phatoacoustic flow cytometry PAFC will be applied to skin and underlying blood vessels. The optical and ultrasound signal will be collected for analysis. On each tested vessel, we will estimate the vessels diameter (using optical or/and ultrasound imaging). The subject's skin pigmentation will be classified as light, medium, or dark. A photoacoustic (PA) contrast will be considered usable for detection of circulating emboli if the photoacoustic signal from the vessels is more than 1.3-fold higher than the photoacoustic signal from surrounding tissue. The device for subjects enrolled on cohort 2 will be completed on day 0 (immediately after venous thromboembolism diagnosis and prior to anticoagulation therapy), day 7 ± 3 days after initiation of anticoagulation therapy, one week ± 3 days after completion of planned anticoagulation therapy and one month ± 3 days after completion of planned anticoagulation therapy. Anticoagulation therapy is part of the patient's normal standard of care and is not part of this study however data from what therapy was received may be captured. D-dimer test will be performed on each time point as part of their normal standard of care however if the D-dimer test is not ordered as part of the standard of care it will be required for the study.. Patients will then be followed in hematology clinic to monitor the venous thromboembolism recurrence every 3 months for one year."}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'minimumAge': '18 Years', 'healthyVolunteers': True, 'eligibilityCriteria': 'Inclusion Criteria Cohort 1:\n\n* Age 18 years and older\n* Willing to adhere to protocol.\n* Signed informed consent\n\nExclusion Criteria Cohort 1:\n\n* Unable to provide informed consent.\n* History of venous thromboembolism.\n* Currently receiving anticoagulant therapy.\n\nInclusion Criteria Cohort 2:\n\n* Ages 18 years and older\n* Confirmed new diagnosis of acute venous thromboembolism.\n* performance status of equal to or less than 2.\n* Able to receive anticoagulation therapy.\n* Willing to adhere to specific protocol requirements.\n* Signed informed consent.\n\nExclusion Criteria Cohort 2:\n\n* Life threatening venous thromboembolism.'}, 'identificationModule': {'nctId': 'NCT02735759', 'acronym': 'PAFC', 'briefTitle': 'Detecting Circulating Emboli in Patients with Acute Venous Thromboembolism', 'organization': {'class': 'OTHER', 'fullName': 'University of Arkansas'}, 'officialTitle': 'Detecting Circulating Emboli in Patients with Acute Venous Thromboembolism Using in Vivo Photoacoustic Flow Cytometry (PAFC)', 'orgStudyIdInfo': {'id': '205341.'}}, 'armsInterventionsModule': {'armGroups': [{'type': 'OTHER', 'label': 'Healthy Volunteers', 'description': 'This cohort will consist of ten healthy volunteers. The photoacoustic flow cytometry device will be used to establish device settings. The intervention with the subject will include the PAFC device to establish appropriate device settings.', 'interventionNames': ['Device: Photoacoustic flow cytometry device']}, {'type': 'OTHER', 'label': 'Venous Thromboembolism', 'description': 'This cohort will consist of ten patients with newly diagnosed, non-life threatening acute venous thromboembolism. The intervention with the subjects is to perform the photoacoustic flow cytometry device to detect circulating emboli in vivo in patients with venous thromboembolism at diagnosis, during and after anticoagulation therapy.', 'interventionNames': ['Device: Photoacoustic flow cytometry device']}], 'interventions': [{'name': 'Photoacoustic flow cytometry device', 'type': 'DEVICE', 'description': "The device for subjects enrolled on cohort 2 will be completed on day 0 (immediately after venous thromboembolism diagnosis and prior to anticoagulation therapy), day 7 ± 3 days after initiation of anticoagulation therapy, one week ± 3 days after completion of planned anticoagulation therapy and one month ± 3 days after completion of planned anticoagulation therapy. Anticoagulation therapy is part of the patient's normal standard of care and is not part of this study however data from what therapy was received may be captured. Patients will then be followed in hematology clinic to monitor the venous thromboembolism recurrence every 3 months for one year.", 'armGroupLabels': ['Healthy Volunteers', 'Venous Thromboembolism']}]}, 'contactsLocationsModule': {'locations': [{'zip': '72205', 'city': 'Little Rock', 'state': 'Arkansas', 'country': 'United States', 'facility': 'University of Arkansas for Medical Sciences', 'geoPoint': {'lat': 34.74648, 'lon': -92.28959}}], 'overallOfficials': [{'name': 'Zhifu Xiang, MD', 'role': 'PRINCIPAL_INVESTIGATOR', 'affiliation': 'University of Arkansas'}]}, 'ipdSharingStatementModule': {'ipdSharing': 'YES', 'description': 'Data learned from this study will be published.'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'University of Arkansas', 'class': 'OTHER'}, 'responsibleParty': {'type': 'SPONSOR'}}}}