Clinical trials near you
Clinical trials in the Washington area
2,199 studies are recruiting volunteers at 845 research sites in the Washington-Arlington-Alexandria, DC-VA-MD-WV area.
Sites in Washington, Fairfax, Bethesda, Rockville, Falls Church, Arlington and 34 more towns.
#6 in the US for recruiting studies#1 in District of Columbia#51 in the US per resident
- Studies recruiting
- 2,199
- Research sites
- 845
- Conditions studied
- 209
- Studies per 100,000 residents
- 34.2
Conditions being studied
The conditions with the most studies recruiting in the area. A study can be for more than one condition.
- Lung cancer199 studies
- Breast cancer116 studies
- Colorectal cancer (bowel cancer)98 studies
- Head and neck cancer84 studies
- Leukemia77 studies
- Ovarian cancer68 studies
- Uterine cancer68 studies
- Prostate cancer64 studies
- Neuroendocrine tumor63 studies
- Pancreatic cancer58 studies
- Non-Hodgkin's lymphoma57 studies
- Endometrial cancer56 studies
- Liver disease50 studies
- Overweight and obesity50 studies
- Peripheral nerve disease47 studies
All 209 conditions
- Lung cancer199
- Breast cancer116
- Colorectal cancer (bowel cancer)98
- Head and neck cancer84
- Leukemia77
- Ovarian cancer68
- Uterine cancer68
- Prostate cancer64
- Neuroendocrine tumor63
- Pancreatic cancer58
- Non-Hodgkin's lymphoma57
- Endometrial cancer56
- Liver disease50
- Overweight and obesity50
- Peripheral nerve disease47
- Sarcoma of soft tissue46
- Anemia44
- Brain cancer44
- Skin cancer43
- Bladder cancer39
- Kidney cancer39
- Melanoma39
- Gastric cancer (stomach cancer)36
- Type 2 diabetes36
- Esophageal cancer34
- Human immunodeficiency virus infection (HIV)32
- Cardiovascular disease31
- Depressive disorder30
- Heart failure29
- Multiple myeloma (MM)29
- Myelodysplastic syndrome (MDS)26
- Stroke26
- Cervical cancer25
- Liver cancer25
- Sickle cell disease25
- High blood pressure (hypertension)24
- Inflammatory bowel disease (IBD)22
- Ischemic heart disease (IHD)19
- Biliary tract cancer18
- Epilepsy17
- Cardiomyopathy16
- COVID-1916
- Retinal degeneration16
- Crohn's disease15
- Fallopian tube cancer15
- Multiple sclerosis (MS)15
- Systemic lupus erythematosus (SLE)15
- Alzheimer's disease14
- Anxiety disorder14
- Interstitial lung disease14
- Neuroblastoma14
- Age-related macular degeneration (AMD)13
- Alcohol dependence13
- Chronic kidney disease (CKD)13
- Eczema (atopic dermatitis)13
- Parkinson's disease (PD)13
- Congenital heart disease12
- Graft-versus-host disease12
- Motor neuron disease (MND)12
- Neurofibromatosis12
- Pulmonary hypertension12
- Thrombocytopenia12
- Ulcerative colitis (UC)12
- Atrial fibrillation (AF)11
- Fatty liver disease (MASH/NASH)11
- Migraine11
- Neurofibromatosis type 1 (NF1)11
- Rheumatoid arthritis11
- Schizophrenia11
- Thrombotic microangiopathy11
- Traumatic brain injury11
- Asthma10
- Attention-deficit hyperactivity disorder (ADHD)9
- Influenza (flu)9
- Intellectual disability9
- Thyroid cancer9
- Amyotrophic lateral sclerosis (ALS)8
- Chronic obstructive pulmonary disease (COPD)8
- Cystic fibrosis8
- Immune thrombocytopenic purpura (ITP)8
- Overactive bladder (OAB)8
- Post-transplant lymphoproliferative disorder8
- Post-traumatic stress disorder (PTSD)8
- Psoriasis8
- Bile duct cancer7
- Dry eye syndrome7
- Fabry's disease7
- Hypercholesterolemia7
- Idiopathic inflammatory myopathy7
- Opioid use disorder7
- Peripheral vascular disease7
- Rhabdomyosarcoma7
- Sjogren's syndrome7
- Sleep apnea7
- Vasculitis7
- Abdominal aortic aneurysm6
- Amyloidosis6
- Esophagitis6
- Hearing loss6
- Juvenile idiopathic arthritis (JIA)6
- Alopecia5
- Autism spectrum disorder (ASD)5
- Bipolar disorder5
- Cerebral palsy5
- Duchenne muscular dystrophy (DMD)5
- Food allergy5
- Gastrointestinal stromal tumor5
- Hodgkin's lymphoma5
- Pompe disease5
- Rhabdoid tumor5
- Alopecia areata4
- Anal cancer4
- Graves' disease4
- Growth hormone deficiency4
- Hereditary angioedema4
- Huntington's disease (HD)4
- Myelofibrosis4
- Peritoneal cancer4
- Systemic sclerosis4
- Tuberous sclerosis4
- Urinary incontinence4
- Abdominal cancer3
- Axial spondyloarthritis3
- Chronic skin ulcer3
- Frontotemporal dementia (FTD)3
- Germ cell tumor3
- Hemolytic uremic syndrome3
- Insomnia3
- Neuropathic pain3
- Ocular hypertension3
- Paroxysmal nocturnal hemoglobinuria (PNH)3
- Psoriatic arthritis (PsA)3
- Spinal muscular atrophy (SMA)3
- Tuberculosis3
- Type 1 diabetes3
- Vascular dementia3
- Actinic keratosis2
- Acute coronary syndrome2
- Ankylosing spondylitis2
- Beta thalassemia2
- Chronic idiopathic urticaria (hives)2
- Chronic sinusitis2
- Cold agglutinin disease2
- Diabetic eye disease2
- Down syndrome2
- Familial multiple polyposis syndrome2
- Fibromyalgia2
- Gallbladder cancer2
- Glaucoma2
- Gout2
- Hepatitis B2
- Hepatitis C2
- Hidradenitis suppurativa (HS)2
- Homonymous hemianopia2
- Hypothyroidism2
- Low back pain2
- Male infertility2
- Obsessive-compulsive disorder (OCD)2
- Osteoarthritis (OA)2
- Pericarditis2
- Polycythemia vera2
- Primary biliary cholangitis (PBC)2
- Primary sclerosing cholangitis2
- Progressive supranuclear palsy (PSP)2
- Psychotic disorder2
- Recurrent urinary tract infection (UTI)2
- Smoking dependence2
- Stargardt's disease2
- Vitiligo2
- Vulvar cancer2
- Achondroplasia1
- Acne1
- Acromegaly1
- Adult onset Still's disease1
- Allergic rhinitis (hay fever)1
- Alpha-1-antitrypsin deficiency (AATD)1
- Chronic fatigue syndrome1
- Cluster headaches1
- Cold sores1
- Complex regional pain syndrome (CRPS)1
- Cutaneous T-cell lymphoma1
- Endometriosis1
- Essential thrombocythemia (ET)1
- Female infertility1
- Frown lines (glabellar lines)1
- Friedreich ataxia1
- Gestational diabetes1
- Hemophilia A1
- Hemophilia B1
- Hepatitis D1
- Macular edema1
- Menopause symptoms1
- Narcolepsy1
- Neuromyelitis optica spectrum disorder (NMOSD)1
- Osteoporosis1
- Polycystic ovarian syndrome (PCOS)1
- Polymyalgia rheumatica1
- Postnatal depression1
- Proteus syndrome1
- Prurigo nodularis1
- Radiculopathy1
- Rotator cuff syndrome1
- RSV infection1
- Spasmodic torticollis1
- Testicular cancer1
- Thyroid eye disease1
- Tourette's syndrome1
- Urethral cancer1
- Vaginal cancer1
662 more studies are for conditions not yet in our catalog.
Whom the studies accept
The share of the area's studies open to each group. A study can accept several.
- Adults 18 to 6496%
- Adults 65 and over86%
- Children and teens (under 18)29%
- Healthy volunteers17%
- Open to all sexes92%
- Women only4%
- Men only3%
79 studies are for children only.
Study phases
Earlier phases test safety in fewer people; later phases compare a treatment with the usual care in many.
- Early phase 11%
- Phase 112%
- Phase 1/210%
- Phase 216%
- Phase 2/32%
- Phase 320%
- Phase 42%
- No phase (device, behavioral and other studies)11%
- Not stated26%
Most active research sites
The sites recruiting for the most studies in the area.
- National Institutes of Health Clinical CenterBethesda598 studies
- MedStar Georgetown University HospitalWashington125 studies
- Children's National Medical CenterWashington110 studies
- Medstar Washington Hospital CenterWashington104 studies
- Virginia Cancer Specialists PCFairfax94 studies
- Next VirginiaFairfax90 studies
- Children's National HospitalWashington74 studies
- Inova Schar Cancer InstituteFairfax73 studies
- NEXT Oncology - VirginiaFairfax69 studies
- Inova Fairfax HospitalFalls Church66 studies
- Sibley Memorial HospitalWashington52 studies
- Walter Reed National Military Medical CenterBethesda52 studies
- George Washington University Medical CenterWashington46 studies
- Georgetown University Medical CenterWashington30 studies
- Georgetown UniversityWashington20 studies
Cite these figures
Free to use under CC BY 4.0. Please credit LocalTrial with a link to this page.
Source: LocalTrial, Clinical trials in the Washington area, https://www.localtrial.com/clinical-trials/district-of-columbia/washington, updated November 12, 2026.
Source: <a href="https://www.localtrial.com/clinical-trials/district-of-columbia/washington">LocalTrial, Clinical trials in the Washington area</a>, updated November 12, 2026.
About these figures
Counted from ClinicalTrials.gov, the U.S. registry of clinical studies, for studies recruiting in the United States. A study is counted once however many sites it has in the area.
The area is the U.S. Census Bureau's Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Residents: 6,436,489, the Census Bureau's latest estimate. Updated November 12, 2026.
These figures describe studies, not advice. Talk to your doctor before joining one.
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