Plasmapheresis Versus Plasma Infusion from Young APOE3 Homozygotes Into MCI APOE4 Homozygotes to Slow Disease Progression

December 30, 2024 updated by: Neill R. Graff-Radford, M.D., Mayo Clinic

Plasmapheresis Versus Plasma Infusion from Young APOE3 Homozygotes Into MCI APOE4 Homozygotes to Slow Disease Progression: an Unblinded Phase 1 Safety, Methodological and Exploratory Biomarkers Study.

Determine safety of plasma infusion or exchange in APOE 44 patients.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

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.

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.
Interventional

Enrollment (Actual)

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.
3

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

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

Study Locations

  • United States
    • Florida
      • Jacksonville, Florida, United States, 32224
        • Mayo Clinic in Florida

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

50 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion criteria

  • Patient age 50 to 75.
  • APOE 44 homozygote.
  • Meets the Petersen criteria for MCI (41).
  • Clinical Dementia Rating (CDR) of 0.5 and Mini Mental Status Examination (MMSE) of 24 to 30 inclusive.
  • Has an informant who the investigator judges has sufficient patient contact to provide accurate information.
  • Stable depression and or anxiety.
  • Stable psychoactive medication for 6 weeks.

Exclusion criteria

  • History of severe reaction to plasma or plasma derived products which include but not limited to severe allergic reaction, anaphylactic reaction and transfusion related acute lung injury (TRALI).
  • Patients who do not want to receive blood transfusion for religious or cultural reasons such as Jehovah Witness Faith.
  • Has a medical condition that would interfere with participation such as congestive heart failure (New York Heart Association Class III or IV), unstable angina, moderate to severe renal impairment, liver failure, and poorly controlled diabetes.
  • History of autoimmune disease considered clinically significant or requiring chronic steroid or immune suppression medication.
  • History of being HIV +.
  • History of +VE test result indicating active hepatitis C or B (defined as both hepatitis B surface antigen and hepatitis core antibody +VE).
  • Uncontrolled hypertension as defined by systolic/diastolic BP three times more than 165/100.
  • No venous access for plasma exchange therapy.
  • Any neurological condition that could be contributing to cognitive decline such as Lewy body disease, front temporal dementia, strokes or other cerebrovascular disease, head trauma, substance abuse, multiple sclerosis, Vitamin B12 deficiency, thyroid deficiency.
  • Epileptic seizures within 10 years of screening.
  • Cancer diagnosis (other than non-melanoma skin cancer) in the last 5 years.
  • More than 1 subcortical stroke or more than 1 cortical stroke.
  • Unable to have an MRI.
  • MRI showing acute or subacute hemorrhage, evidence of normal pressure hydrocephalus, hemispheric infarcts, glioma or other brain tumor that could contribute to cognitive decline.
  • Unstable psychiatric condition.
  • On another experimental treatment study or has been on one in the last 3 months.
  • If a patient consents to lumbar puncture (LP), they will be excluded from LP if any contraindication to having an LP is present. Examples are platelet count<100,000, spine deformity or contraindication to come off blood thinner for the LP. Patients may still participate in the rest of the study without having and LP.
  • Any unspecified reason that the investigator finds the patient unsuitable to take part.

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

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
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: Plasmapheresis
3 patients will have monthly plasmapheresis for 6 months and followed for a total of 12 months
Biological: Plasmapheresis
Patient will have monthly plasma exchange with young ApoE 33 plasma. Each exchange will be 1.5 volume of patient's plasma
Experimental: Plasma infusion
3 patients will have biweekly plasma infusion for 6 months and followed for 12 months
Biological: Plasma infusion
Infuse every two weeks with ApoE33 young plasma (1unit) for 6 months
No Intervention: Control group
3 patients will be followed for 12 months

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
Adverse events
Time Frame: One year
Number of adverse events reported
One year

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.
Mayo Clinic

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: Neill R Graff-Radford, Mayo Clinic

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

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 (Actual)

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.
September 15, 2021

Primary Completion (Actual)

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.
February 16, 2024

Study Completion (Actual)

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.
February 16, 2024

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).
March 21, 2019

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.
March 21, 2019

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.
March 25, 2019

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.
March 25, 2025

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.
December 30, 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.
December 1, 2024

More Information

Terms related to this study

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.
  • 18-007034

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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