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.

336 recruiting in this snapshot

Phase 1 clinical trials in plain English

First-in-human or early safety and dose studies. Small groups. Not designed to prove a treatment works.

On a ClinicalTrials.gov record, Phase 1 (and Early Phase 1) usually means the main questions are safety, dose, and how the body handles the product. Groups are small. Some phase 1 studies enroll people with the disease; others enroll healthy volunteers.

A phase 1 listing is not evidence that the product is effective for you. It is also not an FDA approval. Read eligibility, visit burden, and the consent form with the study team.

PlainTrials applies this label only when the registry Phase field contains PHASE1 or EARLY_PHASE1. We do not reclassify studies.

RecruitingPhase 1 / Phase 2Boston, Massachusetts
Phase 1 / Phase 2: testing [F-18]PBR06 for Multiple Sclerosis

The specific aims of the study are: Primary: To determine the presence and regional distribution of microglial activation, as assessed by Fluorine-18 (18F) labeled "Peripheral Benzodiazepine Receptor 06" (PBR06) -PET, in subjects with active Relapsing Remitting Multiple Sclerosis (RRMS), Secondary Progressive Multiple Sclerosis (SPMS), and Alzheimer's Disease (AD) as compared to healthy controls Secondary: 1. To assess the relationship between microglial activation and clinical variables including disease severity and comorbidities (such as pain, fatigue and/or depression), as well as clinical MRI findings (such as lesions and atrophy) 2.

NCT02649985 · Official ClinicalTrials.gov record · Brigham and Women's Hospital

RecruitingPhase 1Houston, Texas
Phase 1: testing Gemcitabine for Malignant Neoplasm of Bone and Articular Cartilage

Any time the words "you," "your," "I," or "me" appear, it is meant to apply to the potential participant. The goal of this clinical research study is to find the highest tolerable dose of gemcitabine that can be given by inhalation (breathing it as a mist) to patients with solid tumors that have spread to the lungs from other parts of the body.

NCT03093909 · Official ClinicalTrials.gov record · M.D. Anderson Cancer Center

RecruitingPhase 1 / Phase 2Houston, Texas
Phase 1 / Phase 2: testing Ocrelizumab infusion for Schizo-Affective Type of Psychosis

Some people who have what doctors currently call schizophrenia or bipolar disease may actually have a brain disease caused by auto-antibodies. Auto-antibodies are produced when the normal defense mechanism of the body goes wrong and begins to attack the body, similar to "friendly fire." Auto-antibodies attack brain receptors and then the person who has this problem begins to have hallucinations and other manifestations of schizophrenia, like feeling that people can see what they are thinking and also feeling that other people do not like them.

NCT03971487 · Official ClinicalTrials.gov record · The Methodist Hospital Research Institute

RecruitingPhase 1 / Phase 2Gilbert, Arizona
Phase 1 / Phase 2: testing REGN5678 for Metastatic Castration-Resistant Prostate Cancer (mCRPC)

The main purpose of this study is to determine the safety, tolerability (how the body reacts to the drug\[s\]) and effectiveness (ability to treat the cancer) of REGN5678 (Nezastomig) alone, or in combination with cemiplimab. The goal of Part 1 (dose escalation) is to determine a safe dose(s) of REGN5678 when it is given alone or in combination with cemiplimab.

NCT03972657 · Official ClinicalTrials.gov record · Regeneron Pharmaceuticals

RecruitingPhase 1 / Phase 2Duarte, California
Phase 1 / Phase 2: testing INBRX-106 - Hexavalent OX40 agonist antibody for Solid Tumor

This is a Phase 1/2, open-label, non-randomly assigned, 4-part trial to determine the safety profile and identify the maximum tolerated dose (MTD) and/or recommended Phase 2 dose (RP2D) of INBRX 106 administered as a single agent or in combination with the anti-PD-1 checkpoint inhibitor (CPI) pembrolizumab (Keytruda®). KEYTRUDA is a registered trademark of Merck Sharp \& Dohme LLC, a subsidiary of Merck \& Co., Inc., Rahway, NJ, USA.

NCT04198766 · Official ClinicalTrials.gov record · Inhibrx Biosciences, Inc

RecruitingPhase 1 / Phase 2Los Angeles, California
Phase 1 / Phase 2: testing quaratusugene ozeplasmid for Carcinoma, Non-Small Cell Lung

The purpose of this randomly assigned study is to determine the safety and how well it works of quaratusugene ozeplasmid (Reqorsa) added to osimertinib in NSCLC patients with activating EGFR mutations who have progressed while on treatment with osimertinib. Quaratusugene ozeplasmid consists of non-viral lipid nanoparticles that encapsulate a DNA plasmid with the TUSC2 tumor suppressor gene and is the first systemic gene therapy for cancer.

NCT04486833 · Official ClinicalTrials.gov record · Genprex, Inc.

RecruitingPhase 1Washington D.C., District of Columbia
Phase 1: testing Autologous total tumor mRNA and pp65 full length (fl) lysosomal associated membrane protein (LAMP) mRNA loaded DOTAP liposome vaccine administered intravenously (RNA loaded lipid particles, RNA-LPs) for Adult Glioblastoma

The primary objective will be to demonstrate the manufacturing feasibility and safety, and to determine the maximum tolerated dose (MTD) of RNA-LP vaccines in (Stratum 1) adult patients with newly diagnosed GBM (MGMT low level or unmethylated in adults only) and (Stratum 2) in pediatric patients with newly diagnosed HGG (pHGG).

NCT04573140 · Official ClinicalTrials.gov record · University of Florida

RecruitingPhase 1Lille
Phase 1: Surgery with Neoadjuvant stereotactic body radiation therapy for Hepatocellular Carcinoma

Hepatocellular carcinoma (HCC) is the fifth more common cancer in the world, with high mortality rates, due to the low number of patients who are eligible for therapy with curative intent, like surgical resection. Moreover, surgical resection is associated with a high risk of tumor recurrence, because of the tumor seeding through microscopic intrahepatic vessels that surround the tumor, the so-called "microvascular invasion".

NCT04587739 · Official ClinicalTrials.gov record · University Hospital, Lille

RecruitingPhase 1Houston, Texas
Phase 1: testing Hyperpolarized Carbon C 13 Pyruvate for Thyroid Gland Carcinoma

This trial investigates whether hyperpolarized magnetic resonance imaging (hpMRI) can predict treatment response in patients with thyroid cancer and other malignancies of the head and neck undergoing radiation therapy and/or receiving systemic therapy before surgery. An hpMRI is like a standard MRI but involves the use of an imaging contrast agent called hyperpolarized 13-C-pyruvate.

NCT04589624 · Official ClinicalTrials.gov record · M.D. Anderson Cancer Center

RecruitingPhase 1Houston, Texas
Phase 1: testing Axitinib for Advanced Malignant Solid Neoplasm

This phase Ib trial is to find out the best dose, possible benefits and/or side effects of talazoparib when given in combination with palbociclib, axitinib, or crizotinib in treating patients with solid tumors that has spread to nearby tissue or lymph nodes (locally advanced) or other places in the body (metastatic). PARPs are proteins that help repair damaged DNA, the genetic material that serves as the body's instruction book.

NCT04693468 · Official ClinicalTrials.gov record · M.D. Anderson Cancer Center

RecruitingPhase 1 / Phase 2Davis, California
Phase 1 / Phase 2: testing CRISPR_SCD001 for Sickle Cell Disease

This is an open label, non-randomly assigned, 2-center, phase 1/2 trial of a single infusion of sickle allele modified cluster of differentiation (CD34+) hematopoietic stem progenitor cells (HSPCs) in subjects with in subjects ≥12 years old to 35 years old severe Sickle Cell Disease (SCD). The study will measure the hematopoietic stem cell transplantation (HSCT) using CRISPR/Cas9 edited red blood cells (known as CRISPR\_SCD001 Drug Product).

NCT04774536 · Official ClinicalTrials.gov record · Mark Walters, MD

RecruitingPhase 1Columbus, Ohio
Phase 1: testing Osimertinib for Metastatic Lung Non-Small Cell Carcinoma

This phase Ib trial is to find out the best dose, possible benefits and/or side effects of osimertinib and tegavivint as first-line therapy in treating patients with EGFR-mutant non-small cell lung cancer that has spread to other places in the body (metastatic). Osimertinib and tegavivint may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

NCT04780568 · Official ClinicalTrials.gov record · Ohio State University Comprehensive Cancer Center

RecruitingPhase 1 / Phase 2Duarte, California
Phase 1 / Phase 2: testing Giredestrant for Inoperable, Locally Advanced or Metastatic, ER-positive Breast Cancer

This is a Phase Ib/II, open-label, multicenter, randomly assigned umbrella study in participants with breast cancer. The study is designed with the flexibility to open new treatment arms as new treatments become available, close existing treatment arms that demonstrate minimal clinical activity or unacceptable toxicity, or modify the patient population.

NCT04802759 · Official ClinicalTrials.gov record · Hoffmann-La Roche

RecruitingPhase 1Birmingham, Alabama
Phase 1: testing Inavolisib for Metastatic Colorectal Cancer

This open-label, exploratory study is designed to measure the safety and how well it works of targeted therapies or immunotherapy as single agents or combinations, in participants with metastatic colorectal cancer (mCRC) whose tumors are biomarker positive as per treatment arm-specific definition. Eligible participants with mCRC will be enrolled into specific treatment arms based on their biomarker assay results.

NCT04929223 · Official ClinicalTrials.gov record · Hoffmann-La Roche

RecruitingPhase 1Naples, Florida
Phase 1: testing cultured allogeneic adult umbilical cord or placental derived mesenchymal stem cells for Rheumatoid Arthritis

This trial will study the safety and how well it works of intravenous infusion and intra-articular injection of cultured allogeneic adult umbilical cord or placental derived mesenchymal stem cells for the treatment of Rheumatoid Arthritis

NCT05003934 · Official ClinicalTrials.gov record · The Foundation for Orthopaedics and Regenerative Medicine

RecruitingPhase 1Durham, North Carolina
Phase 1: testing Tetanus Diptheria Vaccine for Melanoma

This study wants to determine the safety and feasibility of administering the Tetanus Diptheria Vaccine (Td) or Polio Boost Immunization (IPOL) to patients with metastatic melanoma who are receiving immune checkpoint inhibitor (IO) therapy per standard of care. Subjects will have the vaccine at cycle 4 of IO therapy and will have research blood and tissue samples collected prior to starting IO therapy, at cycle 4 prior to vaccine administration, and at 12-17 days post vaccine.

NCT05077137 · Official ClinicalTrials.gov record · Duke University

RecruitingPhase 1Augusta, Georgia
Phase 1: testing Indoximod for Ependymoma

Recent lab-based discoveries suggest that IDO (indoleamine 2,3-dioxygenase) and BTK (Bruton's tyrosine Kinase) form a closely linked metabolic checkpoint in tumor-associated antigen-presenting cells. The central clinical hypothesis for the GCC2020 study is that combining ibrutinib (BTK-inhibitor) with indoximod (IDO-inhibitor) during chemotherapy will synergistically enhance anti-tumor immune responses, leading to improvement in clinical response with manageable overlapping toxicity.

NCT05106296 · Official ClinicalTrials.gov record · Theodore S. Johnson

RecruitingPhase 1La Jolla, California
Phase 1: testing Linvoseltamab for Multiple Myeloma

This study is researching an experimental drug called linvoseltamab in combination with other drugs for the treatment of a blood cancer called multiple myeloma. Linvoseltamab has previously been studied as a single agent (without other cancer treatments) in participants with multiple myeloma that returned after prior therapies and needed to be treated again.

NCT05137054 · Official ClinicalTrials.gov record · Regeneron Pharmaceuticals

RecruitingPhase 1Duarte, California
Phase 1: testing Neural Stem Cells-expressing CRAd-S-pk7 for Currently Only Enrolling Glioblastoma Patients at First Recurrence

This phase I trial studies the safety of giving multiple intracerebral doses of NSC-CRAd-S-pk7 to treat patients with glioblastoma at first recurrence. NSC-CRAd-S-pk7 consists of neural stem cells that can target glioblastoma cells and carry a virus, which can kill cancer cells.

NCT05139056 · Official ClinicalTrials.gov record · City of Hope Medical Center

RecruitingPhase 1Naples, Florida
Phase 1: testing cultured allogeneic adult umbilical cord or placental derived mesenchymal stem cell exosomes for Eye Diseases

This trial will study the safety and how well it works of intranasal delivery of cultured allogeneic adult umbilical cord or placental derived mesenchymal stem cell exosomes for the treatment of non-arteritic ischemic optic neuropathy

NCT05147701 · Official ClinicalTrials.gov record · The Foundation for Orthopaedics and Regenerative Medicine

All phase hubs · How to read an NCT record