Clinical trials
Complication clinical trials
Below are recruiting complication clinical trials, each written for real people, not researchers. We’re tracking 1,145 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04613921Recruiting
Liver transplant study for severe worsening liver failure
This study looks at when liver transplant is offered and what outcomes happen in people with cirrhosis who have severe “acute-on-chronic” worsening. It may help doctors decide which patients benefit most from transplant and improve care after listing or not listing.
Los Angeles, CaliforniaAges 18–80 - NCT04615065Recruiting
Biobank study collecting emergency data for very sick patients
This study collects health and sometimes blood sample information from people arriving at the emergency department with high-risk or serious conditions. The goal is to build a large emergency “biobank” to help researchers better understand and improve urgent care.
GroningenAges 18 years+ - NCT04652180Recruiting
Robot surgery versus open surgery for esophagus cancer
This trial compares robot-assisted surgery with the standard open chest operation to remove esophagus and nearby tissue. It may help you understand which approach works better and is safer for patients whose cancer can be surgically removed.
L'Hospitalet de Llobregat, BarcelonaAges 18 years+ - NCT04678401RecruitingPhase 1
Trial tests transplant using a half-matched donor for high-risk leukemia
This Phase 1 trial tests a special bone marrow transplant using a related “half-matched” donor (haploidentical), without a specific immune-suppressing medicine (“IS-free”). It’s for adults with certain high-risk AML or MDS to see if this approach can improve control of the disease while tracking safety.
Boston, MassachusettsAges 18–75 - NCT04684602RecruitingPhase 1/Phase 2
Study of stem cells for several short- and long-term illnesses
This early-stage study tests whether injections of mesenchymal stem cells can be safe and helpful for certain chronic (long-term) and acute (short-term) conditions. You might be considered if you can consent, are able to return for follow-up visits, and do not have key reasons that would make stem-cell treatment unsafe.
Culver City, CaliforniaAges 18 years+ - NCT04696081Recruiting
Atrial fibrillation treatment in people with active cancer
This trial studies atrial fibrillation (an irregular heartbeat) in adults who have active cancer. It looks at people whose atrial fibrillation started after their cancer diagnosis or returned after cancer diagnosis.
Caen, NormandyAges 18 years+ - NCT04702321Recruiting
Study genetic risks for childhood cancer complications in Switzerland
This study looks at genetic factors to understand why some children who had cancer develop later complications. It uses stored samples and information from a Swiss biobank to help researchers identify higher-risk children.
GenevaAges Up to 21 years - NCT04713774Recruiting
Tracking bone and blood vessel changes after kidney transplant
This study follows people who recently received a kidney transplant to see how bone strength and blood-vessel calcifications change over time. It may help doctors better understand what to monitor after transplant and how best to protect bone and heart health.
LiègeAges 18 years+ - NCT04783441Recruiting
Continuous glucose sensor study after kidney transplant
This study checks whether using a continuous glucose monitor (a sensor that tracks sugar throughout the day) is helpful and practical for people with a recent kidney transplant and type 2 diabetes on insulin. You may need to wear the sensor continuously and still do finger-stick glucose checks for safety.
Sacramento, CaliforniaAges 18 years+ - NCT04801589RecruitingPhase 3
Guided sedation for children on a breathing machine
This study tests a “goal-directed” approach to sedation (giving the right amount based on target goals) for children who need a breathing machine in the pediatric ICU. The goal is to reduce brain and recovery side effects while keeping children comfortable and safe.
Nashville, TennesseeAges 10 months–11 years - NCT04832607RecruitingPhase 3
Donor T-cell treatment for stubborn CMV, EBV, or Adenovirus after transplant
This Phase 3 trial tests giving special immune cells from your stem-cell donor to treat difficult-to-control viral infections after a stem cell transplant. It may help your body fight the virus when standard antiviral medicines haven’t worked well enough.
BrusselsAges 2 months+ - NCT04845230Recruiting
Food insecurity support trial for pregnant teens and adults
This study is for pregnant people who may be struggling to get enough food. It tests a program to help with nutrition and related support during early pregnancy.
St Louis, MissouriAges 14–55 - NCT04848844Recruiting
Congenital heart disease transplant registry study for adults
This study collects and shares anonymous information about adults being considered for a heart transplant because of a congenital (from birth) heart problem or an inherited heart muscle condition. The goal is to better understand these patients and support research that may improve care.
HamburgAges 18 years+ - NCT04848636Recruiting
Sodium MRI scan to study heart salt changes in kidney disease
This trial uses a special MRI scan (called sodium MRI) to measure salt (sodium) in the heart. It compares people with chronic kidney disease (including those on hemodialysis) to healthy volunteers to understand how kidney disease may affect the heart.
London, OntarioAges 18 years+ - NCT04876950Recruiting
Remote check-ins after surgery using a tablet
This trial tests a virtual follow-up program after surgery, using remote automated monitoring and tablet-based check-ins. It may help with safer recovery by letting the care team follow how you’re doing after you leave the hospital.
Hamilton, OntarioAges 40 years+ - NCT04909606Recruiting
Nurse coaching to prevent steroid treatment complications
This study tests a nurse-led program to help prevent complications from taking corticosteroids (steroid medicines) for a long time. If you’ve recently started high-dose steroid treatment, this could offer structured support to reduce risks.
BrestAges 18 years+ - NCT04915261RecruitingPhase 4
Lenient versus strict instructions after heart device surgery
This trial compares two styles of “post-surgery instructions” after implantation of a new heart device lead. It may help determine which approach is better for patients’ recovery and safety after the procedure.
Ottawa, OntarioAges Any age - NCT04924868RecruitingPhase 3
Ursodeoxycholic acid to prevent gallstone pancreatitis returning
This trial tests whether ursodeoxycholic acid (a bile medicine) can help prevent complications from gallstone-related acute pancreatitis from coming back after you leave the hospital. It may help reduce repeat problems linked to gallstones, especially after an initial pancreatitis episode.
Santiago de Compostela, A coruñaAges 18 years+ - NCT04930029Recruiting
Long-term follow-up after gastric bypass with an omega limb
This study looks at long-term side effects years after gastric bypass surgery done in a specific way. If you had this type of surgery and agree to an endoscopy with small tissue samples at 10 years, you may help doctors understand longer-term outcomes.
LilleAges 18 years+ - NCT07699666Recruiting
Cord clamping timing for preterm babies
This study compares waiting a bit before clamping the umbilical cord versus clamping it right away for babies born between 32 and 37 weeks of pregnancy. It helps determine which approach may be better for preterm infants.
Tunis, Tunis GovernorateAges birth+ - NCT07230886Recruiting
Reducing transplant complications with enhanced preservation
This trial tests a new way to preserve donated lungs before transplant to lower the risk of complications. It may help primary graft dysfunction, a serious lung problem after surgery.
Toronto, OntarioAges 17 years+ - NCT07151378RecruitingPhase 3
Intestinal gel for Parkinson's mood and behavior problems
This trial tests a gel form of levodopa (called Lecigon) given through a tube into the intestine to see if it helps reduce mood swings, impulsive behaviors, and other mental side effects in people with Parkinson's who already have motor fluctuations. It is for people who have had Parkinson's for at least 5 years and are between 18 and 75 years old.
Saarlouis, SaarlandAges 18–75 - NCT04968470Recruiting
Study of silicone gel testicle implants
This trial looks at silicone gel-filled testicular implants placed in the scrotum to restore or rebuild testicular appearance or structure. You may be invited if you need an implant on one or both sides and can follow the study’s consent requirements.
GhentAges Any age - NCT04973397Recruiting
Preventing vascular complications during same-day non-heart surgery
This study looks at ways to reduce blood vessel–related problems (like stroke or heart strain) around the time of planned same-day, non-heart surgery. If you qualify, you may be asked to take part in a specific prevention plan during and around your operation.
Winston-Salem, North CarolinaAges 45 years+
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Common questions
- Are there clinical trials for complication?
- Yes. Clin2 currently lists 1,145 recruiting complication 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 complication 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 complication 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.