Condition
Factor V Leiden clinical trials and research
As of November 12, 2026, Find a Trial lists 2 Factor V Leiden clinical trials that are recruiting, in United Kingdom. By phase: Phase 1 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 2Clinical trials
- 1Country
All recruiting trials (2)
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Engagement study for people with Factor V Leiden and Prothrombin G20210A mutations
This study tests how to connect with adults who have or may have Factor V Leiden or Prothrombin G20210A mutations and introduces them to clinical trials.
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Single-dose test of CITY-FXI in adults with and without Factor V Leiden or Prothrombin G20210A mutation
This will test a single dose of CITY-FXI, an siRNA that lowers Factor XI, in healthy adults and in adults who carry Factor V Leiden or the prothrombin G20210A mutation to see if it is safe and how it acts in the body.
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Quick answers
How many Factor V Leiden clinical trials are recruiting right now?
2, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
All of them have sites in United Kingdom. Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 1: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.