Response of Intracardiac Thrombus to Anticoagulants in Patients With Non-valvular Atrial Fibrillation (LYSIS) (LYSIS)

April 2, 2024 updated by: First Affiliated Hospital Xi'an Jiaotong University

Response of Intracardiac Thrombus to Anticoagulants in Patients With Non-valvular Atrial Fibrillation (LYSIS): an Investigator-initiated, National, Multicenter, Retrospective-prospective, Observational Cohort Study

This study aims to analyze changes in the immune status, metabolic status, and host microbiome community structure in non-valvular atrial fibrillation patients with intracardiac thrombus. Additionally, the study aims to analyze factors that influence the responsiveness and occurrence of adverse events related to anticoagulant therapy.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The researcher-initiated clinical cohort study is a national multicenter, retrospective-prospective study of non-valvular atrial fibrillation patients with intracardiac thrombus, based on molecular biology and multi-omics analysis. The study aims to analyze the changes in the body's immune status, metabolic status, and host microbiome community structure, as well as to analyze the factors that influence the responsiveness of intracardiac thrombus to anticoagulant therapy. The study also evaluates the occurrence of adverse events related to anticoagulation in these patients.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
500

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • China
    • Shaanxi
      • Xi'an, Shaanxi, China, 710061
        • First Affiliated Hospital of Xian Jiantong University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients with non-valvular atrial fibrillation who have been diagnosed with intracardiac thrombosis by First Affiliated Hospital of Xi'an Jiaotong University and multiple medical centers, meet the indications for anticoagulation therapy, and are willing to receive anticoagulation therapy.

Description

Inclusion Criteria:

  • Age ≥18 years old, age ≤80 years old
  • Patients with atrial fibrillation detected by routine surface 12-lead electrocardiography or Holter
  • Transesophageal echocardiography confirmed the presence of cardiac thrombus, and the patient had not received any anticoagulant therapy

Exclusion Criteria:

  • Echocardiography confirmed valvular heart disease
  • Contraindications to anticoagulants
  • Patients with the previous history of hemorrhagic stroke
  • Low platelet count or functional platelet defects
  • Congenital or acquired coagulation or bleeding disorders
  • Abnormal liver function (liver enzymes >2 times the upper limit)
  • Renal failure (endogenous creatinine clearance <30ml/min)
  • Surgery was planned within the intended study time or had been operated within 30 days before the study
  • Other comorbidities that can cause bleeding, such as tumors
  • Patients with autoimmune diseases or immunodeficiency, or patients who are currently using immunosuppressants and immunomodulators
  • Patients are currently participating in other clinical studies

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental group
Adequate and regular anticoagulant therapy. Anticoagulation therapy is determined based on the patient's CHADS₂ or CHA₂DS₂-VASc score. Anticoagulant medications include vitamin K antagonists, novel oral anticoagulants (NOACs), and aspirin.
Other: Observational; No Interventions were given.
Observational; No Interventions were given.
Control group
Patients who have not received regular or continuous anticoagulation therapy due to poor compliance or other reasons.
Other: Observational; No Interventions were given.
Observational; No Interventions were given.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Success rate of thrombolysis
Time Frame: 1，2，3 months after enrollment.
Success rate of thrombolysis within 3 months after initiating anticoagulation therapy.
1，2，3 months after enrollment.
Change of incidence of MACCE
Time Frame: 1，2，3 months after enrollment.
Major adverse cardiovascular and cerebrovascular events, a composite of all-cause mortality, myocardial infarction, coronary revascularization, and stroke.
1，2，3 months after enrollment.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change of incidence of adverse anticoagulation events
Time Frame: 1，2，3 months after enrollment.
Bleeding and thrombotic events
1，2，3 months after enrollment.
Change of incidence of all-cause mortality
Time Frame: 1，2，3 months after enrollment.
All-cause mortality diagnosed by clinical doctors.
1，2，3 months after enrollment.
Change of incidence of myocardial infarction
Time Frame: 1，2，3 months after enrollment.
Myocardial infarction diagnosed by clinical doctors.
1，2，3 months after enrollment.
Change of incidence of coronary revascularization
Time Frame: 1，2，3 months after enrollment.
Coronary revascularization assessed by clinical doctors.
1，2，3 months after enrollment.
Change of incidence of stroke
Time Frame: 1，2，3 months after enrollment.
Stroke diagnosed by clinical doctors.
1，2，3 months after enrollment.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
First Affiliated Hospital Xi'an Jiaotong University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Shaanxi Provincial People's Hospital
Henan Provincial People's Hospital
521 Hospital of NORINCO Group
Xiangyang Central Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Guoliang Li, First Affiliated Hospital Xi'an Jiaotong University
  • Principal Investigator: Chaofeng Sun, First Affiliated Hospital Xi'an Jiaotong University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 31, 2024

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 31, 2030

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2030

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 15, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 15, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 21, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 4, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 2, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • XJTU1AF2023LSK-404

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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