Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Freeze-Dried plasma could offer new way to reverse blood thinners

NCT ID NCT04794348

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled This study
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study aimed to see if a freeze-dried plasma product (FDP) works as well as fresh frozen plasma (FFP) for reversing the blood-thinning effects of warfarin in healthy volunteers. Participants would have received both treatments in random order. However, the trial was withdrawn before any volunteers were enrolled, so no results are available.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Freeze dried plasma (FDP) and fresh frozen plasma (FFP)
What this could lead to
If FDP works as well as FFP, it could provide a more convenient, shelf-stable option for reversing blood thinners in emergencies.
What could go wrong
The trial was withdrawn before any participants enrolled, so no data were collected. Even if tested, FDP may not work as well as FFP, and risks include allergic reactions or infection from plasma products.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Expected to start

May 2021

An estimate. Start dates often move.

Expected to finish

Mar 2022

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Be a male or non-pregnant/non-breastfeeding female; 2. Males must weigh ≥ 140 and ≤ 250 pounds; females must weigh ≥ 140 and ≤ 220 pounds; 3. Be ≥ 18 and ≤ 65 years of age; 4. Self-report that he or she feels well and healthy; 5. Score ≥ 35 on the Duke Activity Status Index (see Appendix 3); 6. Be eligible to make plasmapheresis donations based on the AABB Full-Length Donor History Questionnaire with the exception that subjects with a history of travel that puts them at risk for Creutzfeldt-Jakob Disease, malaria, West Nile virus, or Zika virus are eligible for this trial; 7. Males who have sex with men (MSM) and are in monogamous sexual relationships will be allowed to donate and participate in the trial. Other MSM relations will require a 3 month deferral period from the last sexual relation. 8. Have read the educational materials about donating plasma and the information provided on diet, alcohol consumption, warfarin use, and restrictions during the trial; 9. Be able and willing to provide written informed consent; 10. Be available for the duration of the trial (approximately 18 to 28 weeks) and able to come to the treatment clinic for scheduled trial visits; 11. Females should either be surgically sterile (hysterectomy or tubal ligation) or should use a highly effective, medically accepted contraceptive regimen. Highly effective methods of birth control are defined as those that result in a lower failure rate (i.e., less than 1% per year) when used consistently and correctly such as implants, injectables, combined oral contraceptives, intrauterine devices, sexual abstinence, condoms with spermicide, or vasectomized partner. 12. All females must have a negative pregnancy test prior to enrollment. Post-menopausal females (women over 50 years of age who, in the absence of pregnancy, have a minimum of 2 months without menses) and females who have had a hysterectomy or oophorectomy will not be tested; and 13. Understand the English language. Exclusion Criteria: 1. Known liver, kidney, cardiovascular, neurologic, gastrointestinal, blood, endocrine/metabolic, autoimmune or pulmonary disease, or untreated hypertension; 2. Cancer of any kind (except basal cell) under treatment or resolved; 3. Known or past coagulopathy conditions; 4. Any medical conditions or medications on the American Association of Blood Banks (AABB) medical deferral list; 5. Past history of asthma (defined as use of a prescribed daily asthma controller medication or required asthma medication in the past 2 weeks); 6. Past diagnosis of stroke, deep vein thrombosis (DVT), venous or arterial thrombosis, blood clots, or transient ischemic attack; 7. Family history of venous or arterial thrombosis before the age of 50 in first-degree relatives (i.e., biological parents, full siblings, and/or children); 8. D-dimer result \> 2.0 FEU/mL; 9. Subjects known to be deficient in protein C or protein S, or found to be deficient as assessed by the investigator based on the screening testing; 10. History of diagnosed pathological arrhythmia; 11. Current smoker (defined as having smoked any form of inhalant within the past 6 months); 12. Subjects who are HIV negative and at high risk for contracting HIV who are currently using pre-exposure prophylaxis (PrEP®) as a prevention method; 13. Known HIV or acquired immunodeficiency syndrome-related illness or received a positive test result for HIV infection; 14. Positive test for hepatitis B virus, hepatitis C virus, human T-cell lymphotropic virus (HTLV), West Nile virus, Zika virus, or syphilis; 15. History of significant treated or untreated mental health issues; 16. Female subject who is pregnant, lactating, or with a positive pregnancy test; 17. Currently taking an antibiotic or another medication for an infection; 18. Treatment or use of aspirin (or other platelet-inhibiting agents) within 14 days of trial donation and infusion visits; 19. Currently using any medications for anticoagulant therapy; 20. Currently using any medications for antiplatelet therapy; 21. Positive urine drug screen for one or more of the following: cannabinoids, cocaine, amphetamines, opiates, or PCP; 22. Previous use of clotting factor concentrate(s); 23. Receipt of blood or blood products within the past 12 months; 24. In the past week, has had a headache and fever at the same time; 25. Known intolerance to any excipients (citrate) in the investigational drug formulation. Intolerance is defined as any subject who exhibits severe symptoms of hypocalcemia after several blood donations; 26. Systolic blood pressure \> 140 mm Hg; 27. Diastolic blood pressure \> 90 mm Hg; 28. Temperature \> 100°F; 29. Known hematocrit ≤ 39% for male donors and ≤ 38% for female donors; 30. Positive direct antiglobulin test (DAT); 31. Treatment with any investigational agent within 1 month before treatment infusion for this trial; 32. Participation in any phase of any other investigational trials while participating in this trial; 33. Unwilling or unable to comply with the requirements of this protocol, including the presence of any condition (physical, mental, or social) that is likely to affect the subject's return for follow-up visits on schedule; 34. Other unspecified reasons that, in the opinion of the investigator, make the subject unsuitable for enrollment; 35. Institutionalized because of legal or regulatory order; 36. Follows vegetarian or vegan diet; or 37. Genetically predisposed to be resistant or highly sensitive to warfarin as indicated by having the extensive metabolizer genotypes, VKORC1 missense mutations and/or CYP2C9 variant.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Anticoagulant reversal are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Hoxworth Blood Center

    Cincinnati, Ohio, 45219, United States