Ignite Creation Date:
2025-12-25 @ 2:07 AM
Ignite Modification Date:
2025-12-26 @ 12:33 AM
Study NCT ID:
NCT04938960
Status:
COMPLETED
Last Update Posted:
2025-05-06
First Post:
2021-06-22
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Identification of Non-gal, Non-HLA Antigens in Patients Implanted With Xenogenic Material
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}, 'conditionBrowseModule': {'meshes': [{'id': 'D006349', 'term': 'Heart Valve Diseases'}], 'ancestors': [{'id': 'D006331', 'term': 'Heart Diseases'}, {'id': 'D002318', 'term': 'Cardiovascular Diseases'}]}, 'interventionBrowseModule': {'meshes': [{'id': 'D001800', 'term': 'Blood Specimen Collection'}], 'ancestors': [{'id': 'D013048', 'term': 'Specimen Handling'}, {'id': 'D019411', 'term': 'Clinical Laboratory Techniques'}, {'id': 'D019937', 'term': 'Diagnostic Techniques and Procedures'}, {'id': 'D003933', 'term': 'Diagnosis'}, {'id': 'D011677', 'term': 'Punctures'}, {'id': 'D013514', 'term': 'Surgical Procedures, Operative'}, {'id': 'D008919', 'term': 'Investigative Techniques'}]}}, 'protocolSection': {'designModule': {'bioSpec': {'retention': 'SAMPLES_WITHOUT_DNA', 'description': 'serum samples'}, 'studyType': 'OBSERVATIONAL', 'designInfo': {'timePerspective': 'PROSPECTIVE', 'observationalModel': 'COHORT'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 197}, 'patientRegistry': False}, 'statusModule': {'overallStatus': 'COMPLETED', 'startDateStruct': {'date': '2021-07-01', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2025-05', 'completionDateStruct': {'date': '2024-09-05', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2025-05-01', 'studyFirstSubmitDate': '2021-06-22', 'studyFirstSubmitQcDate': '2021-06-22', 'lastUpdatePostDateStruct': {'date': '2025-05-06', 'type': 'ACTUAL'}, 'studyFirstPostDateStruct': {'date': '2021-06-25', 'type': 'ACTUAL'}, 'primaryCompletionDateStruct': {'date': '2024-09-05', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Identify Non-gal, non-HLA protein antigens in patients that have received xenogenic tissue implant.', 'timeFrame': 'Approximately 12-18 months post-operatively', 'description': 'The captured proteins will be identified, and compared over time (i.e., pre-op, between 2 weeks and 3 months, between 3-11 months (optional), and 12-18 months post-operatively) to determine which proteins (i.e., antigens) in bovine/porcine pericardium that the patient is mounting an immune response towards.'}]}, 'oversightModule': {'isUsExport': False, 'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'conditions': ['Valve Heart Disease']}, 'descriptionModule': {'briefSummary': 'This study involves collecting serum samples from patients presenting for aortic valve replacement at Mayo Clinic, Rochester, MN. Serum samples will be collected pre-op, between 2 weeks and 3 months, between 3-11 months (optional), and between 12-18 months post-operatively. The patients antibodies in these serum samples will be used to capture proteins from the same type of tissue their replacement heart valves are made from (i.e., bovine/porcine pericardium - a non-human tissue which is currently used to make glutaraldehyde-fixed heart valves). The captured proteins will be identified, and compared over time (i.e., 0, 1, 3 and 12 months) to determine which proteins (i.e., antigens) in bovine/porcine pericardium that the patient is mounting an immune response towards.', 'detailedDescription': 'Protein G HP SpinTrap columns will be used to capture IgG antibodies from patient serum pre-implant, between 2 weeks-3 months, between 3-11 months and between 12-18 months post-implant. These antibodies will be cross-linked to the column and then protein extracted from implant tissue (ie Native bovine/porcine pericardium) will be deglycosylated and run through the column. Antigenic proteins will be trapped and non-antigenic proteins will be washed through the column. These antigenic proteins will be eluted off the column and identified using LC-MS/MS. The proteins identified in the pre-implant elutant will be compared to the proteins in post-implant elutant to identify xenoantigens. Success criteria will be method validation by identification of previously known and new currently unknown xenoantigens.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'maximumAge': '99 Years', 'minimumAge': '18 Years', 'samplingMethod': 'PROBABILITY_SAMPLE', 'studyPopulation': 'Adult males and females who will receive either a mechanical or biological heart valve implant', 'healthyVolunteers': False, 'eligibilityCriteria': 'Inclusion Criteria:\n\n* patients who will receive either a biological or mechanical heart valve\n\nExclusion Criteria:\n\n* Currently receiving therapy for cancer requiring treatment with concurrent radiotherapy and/or chemotherapy\n* Cancer in remission for less than 5 years if previously treated with radiotherapy and/or chemotherapy\n* Previous tissue valve implants\n* Current pregnancy'}, 'identificationModule': {'nctId': 'NCT04938960', 'briefTitle': 'Identification of Non-gal, Non-HLA Antigens in Patients Implanted With Xenogenic Material', 'organization': {'class': 'OTHER', 'fullName': 'Mayo Clinic'}, 'officialTitle': 'Identification of Non-gal, Non-HLA Antigens in Patients Implanted With Xenogenic Material', 'orgStudyIdInfo': {'id': '17-007803'}}, 'armsInterventionsModule': {'armGroups': [{'label': 'Biological Heart Valve', 'description': 'Participants receiving a biological heart valve', 'interventionNames': ['Diagnostic Test: blood draw']}, {'label': 'Mechanical Heart Valve', 'description': 'Participants receiving a mechanical heart valve', 'interventionNames': ['Diagnostic Test: blood draw']}], 'interventions': [{'name': 'blood draw', 'type': 'DIAGNOSTIC_TEST', 'description': 'blood will be drawn at pre-operation, between 2 weeks and 3 months, between 3-11 months (optional; we will collect a sample if the patient returns to Mayo Clinic for any other non-study related visit), and between 12-18 months post-operatively.', 'armGroupLabels': ['Biological Heart Valve', 'Mechanical Heart Valve']}]}, 'contactsLocationsModule': {'locations': [{'zip': '85054', 'city': 'Phoenix', 'state': 'Arizona', 'country': 'United States', 'facility': 'Mayo Clinic Arizona', 'geoPoint': {'lat': 33.44838, 'lon': -112.07404}}, {'zip': '32224', 'city': 'Jacksonville', 'state': 'Florida', 'country': 'United States', 'facility': 'Mayo Clinic Florida', 'geoPoint': {'lat': 30.33218, 'lon': -81.65565}}, {'zip': '55905', 'city': 'Rochester', 'state': 'Minnesota', 'country': 'United States', 'facility': 'Mayo Clinic Rochester', 'geoPoint': {'lat': 44.02163, 'lon': -92.4699}}], 'overallOfficials': [{'name': 'Leigh G Griffiths, PhD', 'role': 'PRINCIPAL_INVESTIGATOR', 'affiliation': 'Mayo Clinic'}]}, 'ipdSharingStatementModule': {'ipdSharing': 'NO'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Mayo Clinic', 'class': 'OTHER'}, 'responsibleParty': {'type': 'PRINCIPAL_INVESTIGATOR', 'investigatorTitle': 'Associate Professor of Medicine', 'investigatorFullName': 'Leigh G. Griffiths', 'investigatorAffiliation': 'Mayo Clinic'}}}}