Not medical advice. This website is not medical advice, a diagnosis, a match to a trial, or a recommendation to join a study. Listings are plain-English rewrites of public ClinicalTrials.gov records. Whether a site is still enrolling, and whether you qualify, can only be confirmed by the study team and your clinician. Source registry: ClinicalTrials.gov. Editorial rules: methodology.

389 recruiting in this snapshot

Phase 3 clinical trials in plain English

Larger comparative studies, often used in approval decisions. Not a guarantee of approval or benefit.

Phase 3 studies are usually larger and compare the investigational approach with standard care, placebo, or both. They are often the studies companies cite when they seek regulatory approval.

Enrolling in phase 3 is still research. You may be randomized. You may receive standard care. You may experience side effects. Approval, if it happens later, is a separate public process.

This hub filters on the registry PHASE3 value.

RecruitingPhase 2 / Phase 3Birmingham, Alabama
Phase 2 / Phase 3: Gene-modified (GM) T cell therapy for Neoplasms

This is a prospective study for the long-term follow-up (LTFU) of safety and how well it works for all pediatric and adult participants exposed to Gene-modified (GM) T-cell therapy participating in a previous Celgene sponsored or Celgene alliance partner sponsored study. Participants who received at least one infusion of GM T cells will be asked to enroll in this LTFU protocol upon either premature discontinuation from, or completion of the prior parent treatment protocol.

NCT03435796 · Official ClinicalTrials.gov record · Celgene

RecruitingPhase 3Tucson, Arizona
Phase 3: testing Pembrolizumab for Solid Tumors

This study wants to measure the long-term safety and how well it works of pembrolizumab (MK-3475) in participants from previous Merck pembrolizumab-based parent studies who transition into this extension study. This study will consist of three phases: 1) First Course Phase, 2) Survival Follow-up Phase or 3) Second Course Phase.

NCT03486873 · Official ClinicalTrials.gov record · Merck Sharp & Dohme LLC

RecruitingPhase 3Phoenix, Arizona
Phase 3: testing PDS Implant with Ranibizumab 100 mg/mL for Neovascular Age-Related Macular Degeneration

This study will measure the long-term whether it is safe and how hard side effects are to live with of the Port Delivery System with ranibizumab (PDS) (100 mg/mL) in participants with neovascular age-related macular degeneration (nAMD) who have either completed Phase II Study GX28228 (Ladder), Phase III Study GR40548 (Archway), Phase IIIb Study WR42221 (Velodrome), or completed Week 24 visit in Study WR42221 but were not eligible to be randomly assigned in WR42221.

NCT03683251 · Official ClinicalTrials.gov record · Hoffmann-La Roche

RecruitingPhase 2 / Phase 3Birmingham, Alabama
Phase 2 / Phase 3: testing Temozolomide for Glioblastoma

Glioblastoma (GBM) adaptive, global, innovative learning environment (GBM AGILE) is an international, seamless Phase II/III response adaptive randomization platform trial designed to evaluate multiple therapies in newly diagnosed (ND) and recurrent GBM. All institutions are enrolling Newly Diagnosed participants.

NCT03970447 · Official ClinicalTrials.gov record · Global Coalition for Adaptive Research

RecruitingPhase 3Palo Alto, California
Phase 3: testing Best Available Therapy (BAT) for Relapsing Multiple Sclerosis

This is a multi-center prospective rater-masked (blinded) randomly assigned controlled trial of 156 participants, comparing the treatment strategy of Autologous Hematopoietic Stem Cell Transplantation (AHSCT) to the treatment strategy of Best Available Therapy (BAT) for treatment-resistant relapsing multiple sclerosis (MS). you would be randomly assigned at a 1 to 1 (1:1) ratio.

NCT04047628 · Official ClinicalTrials.gov record · National Institute of Allergy and Infectious Diseases (NIAID)

RecruitingPhase 3Anchorage, Alaska
Phase 3: testing Carboplatin for Lung Non-Small Cell Carcinoma

This phase III ALCHEMIST treatment trial tests the addition of pembrolizumab to usual chemotherapy for the treatment of stage IIA, IIB, IIIA or IIIB non-small cell lung cancer that has been removed by surgery. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread.

NCT04267848 · Official ClinicalTrials.gov record · National Cancer Institute (NCI)

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing Clemizole HCl for Dravet Syndrome

This is a multicenter, Phase 3, randomly assigned, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment study designed to measure the how well it works and safety of clemizole hydrochloride (EPX-100) as added on top of your current treatment therapy in children and adult participants with Dravet syndrome (DS).

NCT04462770 · Official ClinicalTrials.gov record · Epygenix

RecruitingPhase 2 / Phase 3Kingman, Arizona
Phase 2 / Phase 3: testing Cisplatin for Renal Pelvis and Ureter Urothelial Carcinoma

This phase II/III trial compares the effect of adding durvalumab to chemotherapy versus chemotherapy alone before surgery in treating patients with upper urinary tract cancer. Immunotherapy with monoclonal antibodies, such as durvalumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread.

NCT04628767 · Official ClinicalTrials.gov record · National Cancer Institute (NCI)

RecruitingPhase 3Ciudad Autonoma de Buenos Aires, Buenos Aires
Phase 3: testing Deucravacitinib for Plaque Psoriasis

The purpose of this pediatric study is to measure the drug levels, how well it works and safety of Deucravacitinib in children and adolescent participants aged 4 to \<18 years with moderate to severe plaque psoriasis. This study includes two cohorts; Cohort 1 (age 12 to \<18 years) and Cohort 2 (age 4 to \<12 years), with two parts; for each cohort.

NCT04772079 · Official ClinicalTrials.gov record · Bristol-Myers Squibb

RecruitingPhase 3Worthington, Minnesota
Phase 3: testing Palbociclib for HPV-unrelated Head and Neck Squamous Cell Carcinoma

This multicenter, open-label, randomly assigned phase 3 trial will determine if palbociclib and cetuximab (Arm 1) improves overall survival (OS) in comparison to cetuximab this drug alone (Arm 2) in patients with CDKN2A-altered, HPV-unrelated recurrent or metastatic head and neck squamous cell carcinoma (HNSCC) who experienced disease progression on a PD-1/L1 inhibitor (given as this drug alone or in combination with other therapy).

NCT04966481 · Official ClinicalTrials.gov record · Washington University School of Medicine

RecruitingPhase 2 / Phase 3Anchorage, Alaska
Phase 2 / Phase 3: testing Atezolizumab for Advanced Extrapulmonary Neuroendocrine Carcinoma

This phase II/III trial compares the effect of immunotherapy with atezolizumab in combination with standard chemotherapy with a platinum drug (cisplatin or carboplatin) and etoposide versus standard therapy alone for the treatment of poorly differentiated extrapulmonary (originated outside the lung) neuroendocrine cancer that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced) or that has spread from where it first started (primary site) to other places in the body (metastatic). The other aim of this trial is to compare using atezolizumab just at the beginning of treatment versus continuing it beyond the initial treatment.

NCT05058651 · Official ClinicalTrials.gov record · National Cancer Institute (NCI)

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing NRTX-1001 for Mesial Temporal Lobe Epilepsy

This clinical trial is designed to test whether a single image-guided intracerebral administration of inhibitory nerve cells, called interneurons (NRTX-1001), into subjects with drug-resistant unilateral mesial temporal lobe epilepsy (MTLE), with or without mesial temporal sclerosis (MTS), is safe (frequency of side effects) and effective (seizure frequency). NRTX-1001 comprises human interneurons that secrete a neurotransmitter, gamma-aminobutyric acid (GABA).

NCT05135091 · Official ClinicalTrials.gov record · Neurona Therapeutics

RecruitingPhase 3Palo Alto, California
Phase 3: testing Carisbamate for Seizures

The primary objective is to measure the how well it works of carisbamate (YKP509) as added on top of your current treatment treatment in reducing the number of drop seizures (tonic, atonic, and tonic-clonic) compared with dummy treatment (placebo) in pediatric and adult subjects (age 4-55 years) diagnosed with Lennox Gastaut Syndrome (LGS).

NCT05219617 · Official ClinicalTrials.gov record · SK Life Science, Inc.

RecruitingPhase 3Bakersfield, California
Phase 3: testing Dupilumab for Pruritus

The main objective of the study is to assess how well it works and safety of dupilumab given up to 24 weeks in adults with CPUO. This is a master protocol which includes 2 parallel-treatment, neither you nor the study doctors know who gets the real treatment, 2- arm Phase 3 staggered studies of similar design (Study A and Study B) in male and female participants aged 18 to 90 years with CPUO.

NCT05263206 · Official ClinicalTrials.gov record · Sanofi

RecruitingPhase 2 / Phase 3Aurora, Colorado
Phase 2 / Phase 3: testing Psilocybin 25 mgs for Advanced Cancer

The purpose of this research is to study the safety and effects of single-dose psilocybin 25mg versus an active dummy treatment (placebo) (single dose niacin 100mg) in the treatment of anxiety, depression, and existential distress (i.e., loss of meaning and hope; fear of death) in advanced cancer (i.e., stage 3 or 4). Study medications will be administered in conjunction with brief psychotherapy that is designed to treat anxiety, depression and existential distress in advanced cancer.

NCT05398484 · Official ClinicalTrials.gov record · NYU Langone Health

RecruitingPhase 3CABA, Buenos Aires
Phase 3: testing QMF149 for Asthma

This study wants to measure the superiority in terms of how well it works and measure the safety of QMF149 (indacaterol (acetate) / mometasone (furoate)) compared to budesonide in children from 6 to less than 12 years of age with asthma. * The study duration will be up to 37 weeks including an investigational treatment duration of 12 weeks and a comparator treatment duration of 12 weeks.

NCT05562466 · Official ClinicalTrials.gov record · Novartis Pharmaceuticals

RecruitingPhase 3Washington D.C., District of Columbia
Phase 3: testing Indocyanine Green Solution for Stage I Uterine Corpus Carcinoma or Carcinosarcoma AJCC v8

This phase III trial compares the effect of sentinel lymph node mapping to standard lymph node dissection in reducing the risk of swelling in the legs (lymphedema) in patients undergoing a hysterectomy for stage I endometrial cancer. Standard lymph node dissection removes lymph nodes around the uterus during a hysterectomy to look for spread of cancer from the uterus to nearby lymph nodes.

NCT05646316 · Official ClinicalTrials.gov record · NRG Oncology

RecruitingPhase 3Mobile, Alabama
Phase 3: testing XEN1101 for Primary Generalized Tonic-Clonic Seizures

This is a Phase 3, multicenter, randomly assigned, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment study to measure the clinical how well it works, safety, and tolerability of XEN1101 administered as added on top of your current treatment treatment in primary generalized tonic-clonic seizures (PGTCS).

NCT05667142 · Official ClinicalTrials.gov record · Xenon Pharmaceuticals Inc.

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing Bleomycin Sulfate for Lugano Classification Limited Stage Hodgkin Lymphoma AJCC v8

This phase III trial compares the effect of adding immunotherapy (brentuximab vedotin and nivolumab) to standard treatment (chemotherapy with or without radiation) to the standard treatment alone in improving survival in patients with stage I and II classical Hodgkin lymphoma. Brentuximab vedotin is in a class of medications called antibody-drug conjugates.

NCT05675410 · Official ClinicalTrials.gov record · National Cancer Institute (NCI)

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing Fluorouracil for Advanced Esophageal Adenocarcinoma

This phase III trial compares the effect of modified fluorouracil, leucovorin calcium, oxaliplatin, and irinotecan (mFOLFIRINOX) with or without nivolumab to the effect of modified fluorouracil, leucovorin calcium, and oxaliplatin (mFOLFOX) with or without nivolumab for the treatment of patients with advanced, unresectable, or metastatic HER2 negative esophageal, gastroesophageal junction, or gastric adenocarcinoma. The usual approach for patients who are not in a study is treatment with FOLFOX with some receiving an immunotherapy drug, either nivolumab or pembrolizumab, in addition to FOLFOX chemotherapy.

NCT05677490 · Official ClinicalTrials.gov record · Alliance for Clinical Trials in Oncology

RecruitingPhase 3Scottsdale, Arizona
Phase 3: testing Lasofoxifene in combination with abemaciclib for Metastatic Breast Cancer

The goal of this clinical trial is to assess the how well it works, whether it is safe and how hard side effects are to live with of the combination of lasofoxifene and abemaciclib compared to fulvestrant and abemaciclib for the treatment of pre- and postmenopausal women and men who have previously received ribociclib or palbociclib-based treatment and have locally advanced or metastatic estrogen receptor positive (ER+)/human epidermal growth factor 2 negative (HER2-) breast cancer with an estrogen receptor 1 (ESR1) mutation. The main question the study aims to answer is: • To compare the how well it works of the combination of lasofoxifene and abemaciclib with that of fulvestrant and abemaciclib Participants will receive either receive 5 mg/d of oral lasofoxifene plus oral abemaciclib 150 mg twice a day or the combination of fulvestrant 500 mg intramuscular (IM) on Days 1, 15, and 29 and then once monthly thereafter plus oral abemaciclib 150 mg twice a day.

NCT05696626 · Official ClinicalTrials.gov record · LeonaBio

RecruitingPhase 2 / Phase 3Los Angeles, California
Phase 2 / Phase 3: testing Vericiguat tablet for Heart Failure

This study aims to compare the how well it works of vericiguat versus dummy treatment (placebo) on change in n-terminal pro-brain natriuretic peptide (NTproBNP) from baseline to Week 16 of the Base Period. The primary hypothesis is that vericiguat is superior to dummy treatment (placebo) in reducing NT-proBNP at Week 16 of the Base Period.

NCT05714085 · Official ClinicalTrials.gov record · Merck Sharp & Dohme LLC

RecruitingPhase 3Little Rock, Arkansas
Phase 3: testing XEN1101 for Focal Onset Seizures

The X-TOLE3 Phase 3 clinical trial is a randomly assigned, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment study that will measure the clinical how well it works, whether it is safe and how hard side effects are to live with of XEN1101 administered as added on top of your current treatment therapy in focal-onset seizures.

NCT05716100 · Official ClinicalTrials.gov record · Xenon Pharmaceuticals Inc.

RecruitingPhase 3Los Angeles, California
Phase 3: testing Linvoseltamab for Relapsed Refractory Multiple Myeloma (RRMM)

This study is researching an experimental drug called linvoseltamab, also called REGN5458. Linvoseltamab has previously been studied by itself (without other cancer drugs) in participants who had advanced multiple myeloma that returned and needed to be treated again after many other therapies had failed.

NCT05730036 · Official ClinicalTrials.gov record · Regeneron Pharmaceuticals

RecruitingPhase 3Lyon, Bron
Phase 3: testing Perfusion of treatment Rituximab for Multiple Sclerosis

The goal of this randomly assigned clinical trial is to compare relapse remitting multiple sclerosis (RRMS) patients treated by ocrelizumab or by rituximab followed for 2 years. The main question it aims to answer is : • to demonstrate the non-inferiority of rituximab versus ocrelizumab in active relapsing MS patients on the % of patients without disease activity at 2 years.

NCT05758831 · Official ClinicalTrials.gov record · Rennes University Hospital

RecruitingPhase 3Rosario, Santa Fe Province
Phase 3: testing QVM149 for Asthma

This study wants to measure the how well it works and safety of indacaterol acetate / glycopyrronium bromide / mometasone furoate (QVM149) compared to salmeterol xinafoate / fluticasone propionate in children from 12 to less than 18 years of age with asthma with pre-bronchodilator FEV1 ≥ 50 % of the predicted normal value for the participant.

NCT05776927 · Official ClinicalTrials.gov record · Novartis Pharmaceuticals

RecruitingPhase 3Aurora, Colorado
Phase 3: testing Semaglutide Injectable Product (Wegovy and/or Ozempic) for PCOS (Polycystic Ovary Syndrome) of Bilateral Ovaries

Girls and women 12-35 years old with obesity and polycystic ovarian syndrome who are on or off metformin, will receive a glucagon like peptide-1 receptor agonist intervention for 10 months to induce metabolic changes, weight loss and improve reproductive abnormalities.

NCT05819853 · Official ClinicalTrials.gov record · University of Colorado, Denver

RecruitingPhase 3Phoenix, Arizona
Phase 3: testing Continuous DOAC therapy for Atrial Fibrillation

REACT-AF is a multicenter prospective, randomly assigned, open-label, blinded endpoint (PROBE design), controlled trial comparing the current Standard Of Care (SOC) of continuous Direct Oral Anticoagulation (DOAC) use versus time-delimited (1 month) DOAC guided by an AF-sensing Smart Watch (AFSW) in participants with a history of paroxysmal or persistent Atrial Fibrillation (AF) and low-to-moderate stroke risk.

NCT05836987 · Official ClinicalTrials.gov record · Johns Hopkins University

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