Clinical trials
Follow-up clinical trials
Below are recruiting follow-up clinical trials, each written for real people, not researchers. We’re tracking 614 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04816773Enrolling by invitation
Long-term follow-up for specific knee replacement parts
This study follows people for up to 10 years after a knee replacement done with specific manufacturer parts. It helps the company and doctors understand how well these knee implants work and whether they cause any long-term problems.
Fremont, CaliforniaAges 21 years+ - NCT04628585Enrolling by invitation
Follow-up for people with sickle cell treated with gene therapy
This study is a long-term follow-up for people who already received gene therapy for sickle cell disease in a specific sponsor’s clinical trial. It helps researchers watch for long-term safety and outcomes over time.
Birmingham, AlabamaAges 2–53 - NCT04491721Enrolling by invitation
Follow-up study comparing two rituximab options in new DLBCL
This study follows people who already took part in an earlier Phase III trial to see how well two rituximab medicines work over time. It looks at outcomes like how long participants live and how long the disease stays under control, and may help confirm whether the biosimilar is comparable to the original.
BeijingAges 18–80 - NCT04428489Enrolling by invitation
Follow-up for low blood counts without MDS
This study follows people with ongoing low blood counts (red cells, white cells, and/or platelets) to better understand their condition when it does not meet criteria for MDS. It may help improve how persistent blood count problems are evaluated over time.
Suzhou, JiangsuAges 18 years+ - NCT04360265Enrolling by invitationPhase 3
Follow-up gene therapy study for MPS IIIA participants
This follow-up study looks at how a past gene therapy treatment (UX111) is affecting you over time. It mainly involves continued visits and safety checks, and it helps researchers understand long-term benefits and risks.
Columbus, OhioAges Any age - NCT04269447Enrolling by invitation
Collecting samples from people with abdominal aortic aneurysm
This study sets up a long-term biobank by collecting health information and tissue/blood samples from people with an abdominal aortic aneurysm. It may help doctors better understand what causes aneurysms and how to detect or treat them in the future.
Solna, Stockholm CountyAges 50–80 - NCT04208529Enrolling by invitationPhase 3
Long-term follow-up after receiving CTX001 infusion
This study follows people for a long time after they received CTX001 in an earlier (parent) study. It helps researchers learn about long-term safety and outcomes of the treatment.
Palo Alto, CaliforniaAges 2 years+ - NCT04147559Enrolling by invitation
Long-term follow-up for a specific hip replacement stem
This study checks how well a particular hip replacement stem (the PROFEMUR Preserve Classic Femoral Stem) and matching parts keep working over many years. You may be invited if you had that exact hip replacement combination and can return for long-term checkups.
Scottsdale, ArizonaAges 21 years+ - NCT04145401Enrolling by invitation
Long-term follow-up for a specific knee revision implant
This study tracks how well a particular knee revision implant performs over many years. It may help you by closely monitoring your knee after revision surgery and adding to long-term safety and performance data.
Englewood, ColoradoAges 21 years+ - NCT04064008Enrolling by invitation
Long-term follow-up for a specific hip revision stem
This study follows people who had a hip replacement redone (revision) because of bone healing problems or hardware removal, using a specific revision femoral stem. It checks how the stem does over time and follows up for up to 10 years after surgery.
OtwockAges Any age - NCT03999801Enrolling by invitationPhase 2
Long-term follow-up for a subretinal eye treatment
This study checks how well a previous eye treatment (RGX-314) lasts over time. There is also an extra “other eye” study for people with age-related macular degeneration affecting both eyes.
Phoenix, ArizonaAges 50 years+ - NCT03576573Enrolling by invitation
Follow-up study for specific hip replacement components
This study checks outcomes after a specific type of hip surgery using specific brand parts. You may help by sharing follow-up visit information so the sponsor can confirm the components work as expected in everyday patients.
BuxtehudeAges 21 years+ - NCT03478670Enrolling by invitation
Registry follow-up for ADA-SCID patients treated with Strimvelis
This study keeps track of people with ADA-SCID (a rare immune system condition) who previously received Strimvelis or a related treatment. It helps doctors understand long-term outcomes and safety after treatment.
Milan, LombardyAges Any age - NCT03396276Enrolling by invitationPhase 4
Emergency system to help people stop opioid misuse
This Phase 4 study tests an “emergency opioid engagement system” that aims to help people who are opioid-dependent start stopping opioid use. If you’re willing to stop and can safely participate, the program may offer structured support when you’re in the emergency setting.
Houston, TexasAges 18 years+
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Common questions
- Are there clinical trials for follow-up?
- Yes. Clin2 currently lists 614 recruiting follow-up studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a follow-up trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a follow-up trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.