Clinical trials
Efficacy and Safety clinical trials
Below are recruiting efficacy and safety clinical trials, each written for real people, not researchers. We’re tracking 2,733 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04706611Recruiting
Stool transplant to treat gut and immune-related conditions
This trial studies fecal microbiota transplantation (a stool-based treatment) to improve symptoms and safety in people with certain gut and immune conditions. It aims to see whether changing gut bacteria can help you feel better.
Guangzhou, GuangdongAges 18–70 - NCT04043897RecruitingPhase 2
Oral rifaximin for active microscopic colitis flare
This trial tests whether an oral antibiotic called rifaximin can improve symptoms during a microscopic colitis flare. It aims to see if it is safe and effective for people whose colitis was confirmed by colon biopsy.
Evanston, IllinoisAges 18 years+ - NCT04829708RecruitingPhase 3
Preventing brain spread in limited-stage small cell lung cancer
This trial compares two ways to manage limited-stage small cell lung cancer that has improved after initial chemotherapy and radiation. Participants will either get preventive brain radiation or have regular brain MRI scans instead, to see which approach is safer and works better.
Jinan, ShandongAges 18–75 - NCT04576143RecruitingPhase 2/Phase 3
Dose-dense chemo before surgery for HER2-negative breast cancer
This trial studies a faster, higher-frequency chemotherapy schedule given before surgery for HER2-negative breast cancer. It aims to see if this approach works better and is safe for the patient’s cancer stage.
Hangzhou, ZhejiangAges 18–70 - NCT04191681RecruitingPhase 4
Testing ARNI in people with implanted LVAD devices
This trial studies whether a heart medicine called ARNI (sacubitril-valsartan) is safe and works well for people who have a durable LVAD and moderate-to-severe heart pumping weakness. It may help improve symptoms and outcomes, while carefully checking side effects in this higher-risk group.
Cleveland, OhioAges 18 years+ - NCT04935918Recruiting
Adjustable bladder balloon treatment for urinary leakage
This trial studies how safe and effective adjustable balloons in the bladder are for children and teens with bladder exstrophy or isolated epispadias who have urine leakage. It may help reduce incontinence while monitoring bladder and kidney safety.
Marseille, PACAAges 5–18 - NCT03094429RecruitingPhase 2/Phase 3
Testing NaBen add-on to clozapine for tough schizophrenia symptoms
This trial tests whether adding NaBen (a supplement-like medicine) to clozapine can improve “residual” symptoms in adults with difficult-to-treat schizophrenia. The study also checks safety and the best dose, using a placebo (inactive pill) for comparison.
Pasadena, CaliforniaAges 18–55 - NCT03755193RecruitingPhase 2
Testing another osteoporosis medicine after 2 years of denosumab
This study looks at how well and how safely another osteoporosis medicine works for people who have already taken denosumab for 2 years. It may help find the best next step to strengthen bones and lower fracture risk after denosumab.
Matsumoto, NaganoAges 20–120 - NCT04969731RecruitingPhase 3
Immune cell therapy plus gemcitabine after pancreas surgery
This Phase 3 trial tests whether adding an immune cell therapy (Immuncell-LC) to the standard chemotherapy drug gemcitabine helps people with resectable pancreatic cancer after surgery. It aims to improve safety and outcomes like preventing the cancer from coming back.
Seoul, Daehak-ro, Jongno-guAges 19–80 - NCT05157763RecruitingPhase 1/Phase 2
Test ointment for small basal cell skin cancers
This Phase 1/2 trial tests EscharEx (an investigational treatment) to see if it is safe and works on a single small basal cell skin cancer on the trunk or upper arms. You might qualify if your cancer fits specific size and location rules and you have not had radiation to that spot.
Aventura, FloridaAges 18 years+ - NCT05141253RecruitingEarly Phase 1
Trial of RD133 for mesothelin-positive tumors after prior treatment
This early-stage trial tests whether RD133 can be safe and effective for people whose solid tumors have a high “mesothelin” marker and that have not responded to at least two standard treatments. If you qualify, you’ll be checked closely for side effects and whether the tumor responds.
Wuhan, HubeiAges 18 years+ - NCT05445063RecruitingPhase 1
iPSC eye-cell transplant for late dry macular degeneration
This Phase 1 study tests an experimental transplant made from your own cells to try to improve vision in people with advanced “late dry” age-related macular degeneration (AMD). It focuses first on safety, and may help some participants with limited central vision.
Beijing, Beijing MunicipalityAges 50–75 - NCT05455307Recruiting
Test of a garlic-based ureteral stent for scarred ureter blockage
This study tests whether an Allium-based ureteral stent can improve healing and comfort for people with a scarred ureter (ureteral stricture) that has not responded to prior dilation. You may be asked to accept a stent placed for the long term, depending on your situation.
New Taipei CityAges 18–80 - NCT05015283Recruiting
Gastric bypass type surgery to help type 2 diabetes go into remission
This study compares two kinds of weight-loss surgeries to see which helps people with type 2 diabetes reach diabetes remission more safely. It may help if your diabetes is not well controlled and your care team recommends one of these operations.
Beijing, Beijing MunicipalityAges 18–65 - NCT05486000Recruiting
Testing a device to help chronic left heart failure
This trial studies a small implant (an “atrial shunt” device) to improve symptoms and heart function in people with chronic left heart failure that stays active despite standard medicines. It focuses on whether the implant is safe and can help you feel better and possibly breathe easier.
Nantong, JiangsuAges 18 years+ - NCT04502394RecruitingPhase 1/Phase 2
Investigational drug combo for relapsed blood cancer
This trial combines two investigational drugs to see if they are safe and effective for patients with two types of blood cancer: diffuse large B-cell lymphoma (DLBCL) or chronic lymphocytic leukemia (CLL) that has come back or stopped responding to standard treatments. It may offer a new option when other treatments have not worked.
Goshen, IndianaAges 18 years+ - NCT04983121RecruitingPhase 2
Neoadjuvant pyrotinib plus ARX788 for HER2-positive breast cancer
This Phase 2 trial studies whether combining pyrotinib with ARX788 given before surgery can work better and be safe in people with HER2-positive breast cancer. It’s designed for tumors that did not respond well enough to earlier trastuzumab and pertuzumab treatment.
Shenyang, LiaoningAges 18–75 - NCT05552937RecruitingPhase 2
Tafasitamab plus lenalidomide for relapsed large B-cell lymphoma
This trial studies whether the combination of tafasitamab and lenalidomide can work better and be safe for people whose large B-cell lymphoma has returned or did not respond. It may help by targeting lymphoma cells and supporting immune activity, while monitoring side effects closely.
Hangzhou, ZhejiangAges 18 years+ - NCT05549167RecruitingPhase 3
Sirolimus for children with juvenile nasal blood tumors
This trial tests whether sirolimus can shrink or control juvenile nasopharyngeal angiofibroma in children and teens, and checks its safety. It may help families who cannot rely only on surgery, especially for larger or hard-to-treat tumors.
MoscowAges 7–18 - NCT04922567RecruitingPhase 2
Lenalidomide plus CHOP versus CHOP for untreated PTCL
This Phase 2 trial compares two chemotherapy approaches—adding lenalidomide to CHOP versus CHOP alone—for people with untreated peripheral T-cell lymphoma (PTCL). The goal is to see if the added medicine improves response and safety.
Hangzhou, ZhejiangAges 18–75 - NCT05610566Recruiting
HighLife valve replacement for severe leaking mitral valve
This trial studies a new catheter-based valve replacement system for people with moderate to severe, or severe, mitral valve regurgitation (a leaky mitral valve). It aims to check whether the procedure is safe and can improve heart function compared with expected care.
Suzhou, JiangsuAges 18 years+ - NCT05517291Recruiting
Compare two stent types for blocked thigh artery disease
This trial compares a special drug-coated balloon/stent strategy versus a standard stent approach for people with blocked thigh artery segments. It aims to improve how long the artery stays open and reduces repeat procedures.
BeijingAges 18–85 - NCT05665920Recruiting
Shorter radiation after breast surgery for certain node-positive cancer
This trial compares a shorter, more concentrated radiation schedule versus a standard shorter schedule after breast-conserving surgery. It looks at whether the treatment works well and is safe, especially for women whose lymph nodes also need radiation.
São Paulo, São PauloAges 18 years+ - NCT05713578RecruitingEarly Phase 1
Apantamide plus docetaxel with hormone therapy for advanced prostate cancer
This early-phase trial tests whether adding apantamide to hormone therapy (and possibly adding docetaxel chemotherapy) works better and is safe for men with high-volume spread of prostate cancer. It’s designed for people who have recently started hormone therapy and haven’t shown clear disease worsening yet.
Jinan, ShandongAges 18–90
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Common questions
- Are there clinical trials for efficacy and safety?
- Yes. Clin2 currently lists 2,733 recruiting efficacy and safety 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 efficacy and safety 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 efficacy and safety 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.