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Trackers› Clinical trials› District of Columbia
Clinical trial register · United States · industry-sponsored

Clinical Trials in District of Columbia, 2026

Every industry-sponsored study on the ClinicalTrials.gov registry that lists a US site and is open, about to open, active-but-closed, or enrolling by invitation. This deliberately excludes academic and other non-industry sponsors — the full US registry across all sponsors runs to over 22,000 recruiting studies alone.

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Source: ClinicalTrials.gov. Complete coverage of the industry-sponsored slice — all 9122 matching records are in this view (non-industry sponsors are out of scope by design, not truncated). Synced 07 Oct 2026, 03:16 UTC
9122
Studies in scope
industry-sponsored, all four open statuses
4946
Recruiting now
open to new participants
2190
Lead sponsors
across recruiting studies
Top states
California 114 Florida 103 Illinois 51 Georgia 50 New York 50
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
AstraZeneca45 Merck Sharp & Dohme LLC44 Pfizer25 Novartis Pharmaceuticals24 Hoffmann-La Roche21 Clear sponsor filter
State
California114 Florida103 Illinois51 Georgia50 New York50
All 47 states
Target enrolment
to

Trials with a site in District of Columbia

25 of 9122 studies
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Status
Study
Lead sponsor
Phase
Enrol
US states
Start
Recruiting
A Study to Learn About Revaccination With a Vaccine Called RSVpreF in Immunocompromised Adults
NCT07768345Respiratory Syncytial Virus (RSV)
DrugRSVpreF Vaccine
Pfizer
Phase 3
440
California, District of Columbia, Georgia, New York, North Carolina, Pennsylvania
2026-08-31
Recruiting
Symbiotic-GU-06: A Study to Learn About PF-08634404 Alone or In Combination With Enfortumab Vedotin in Urothelial Cancer
NCT07421700Urothelial Cancer, Advanced/Metastatic Urothelial Cancer, Urothelial Carcinoma
DrugsPF-08634404·Enfortumab Vedotin
Pfizer
Phase 1/2
132
Arkansas, California, Colorado, Connecticut, District of Columbia, Georgia, Illinois, Maryland
2026-03-11
Recruiting
A Study to Learn About mRNA Vaccines Against Influenza in Adults
NCT07431853Healthy Adults
Pfizer
Phase 2
770
Alabama, California, Connecticut, District of Columbia, Florida, Georgia, Hawaii, Missouri
2026-02-23
Recruiting
A Study to Learn About a Clostridioides Difficile Vaccine in People 65 Years of Age and Older
NCT07282665Clostridoides Difficile Associated Disease
Pfizer
Phase 3
32,500
Alabama, Arizona, Arkansas, California, District of Columbia, Florida, Georgia, Illinois
2025-12-10
Recruiting
A Study to Learn About the Medicine Ponsegromab in Adults With Cancer of the Pancreas Which Has Spread and Caused Significant Body Weight Loss and Fatigue
NCT06989437Cachexia, Metastatic Pancreatic Ductal Adenocarcinoma
DrugPonsegromab
Pfizer
Phase 2/3
982
Alabama, Arizona, Arkansas, California, District of Columbia, Florida, Georgia, Hawaii
2025-10-03
Recruiting
A Study to Learn About the Study Medicine Called PF-07248144 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment.
NCT07062965Breast Cancer
DrugsPrifetrastat·Exemestane·Everolimus·Fulvestrant
Pfizer
Phase 3
400
Arizona, California, Colorado, Connecticut, District of Columbia, Georgia, Illinois, Maryland
2025-08-05
Active, closed
A Study to Learn About Medicine Called Ritlecitinib in Children Aged Between 6 to 12 Years With Severe Alopecia Areata
NCT07029711Severe Alopecia Areata
DrugsRitlecitinib higher·Ritlecitinib lower
Pfizer
Phase 3
208
California, Colorado, District of Columbia, Florida, Illinois, Indiana, Maryland, Michigan
2025-07-31
Recruiting
This is a Study to Learn About How the Combination of the Study Medicines Sigvotatug Vedotin Plus Pembrolizumab Works in People With Non-small Cell Lung Cancer With High Levels of PD-L1.
NCT06758401Non-Small Cell Lung Cancer, Carcinoma, Non-Small-Cell Lung, Carcinoma, Non-Small-Cell Lung (NSCLC)
DrugsSigvotatug vedotin·Pembrolizumab
Pfizer
Phase 3
714
California, Colorado, District of Columbia, Florida, Illinois, Kansas, Maine, Massachusetts
2025-07-23
Recruiting
A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised
NCT07013474COVID-19 Infection
DrugsIbuzatrelvir·Veklury·Remdesivir
Pfizer
Phase 3
300
California, Colorado, District of Columbia, Florida, Georgia, Idaho, Illinois, Maryland
2025-07-14
Active, closed
A Study of Disitamab Vedotin in Adults With HER2 Expressing Advanced Breast Cancer
NCT06966453Breast Cancer, Breast Neoplasms
DrugDisitamab Vedotin
Pfizer
Phase 1/2
74
Alabama, Arizona, California, Colorado, Connecticut, District of Columbia, Florida, Georgia
2025-06-30
Recruiting
A Study to Learn About the Study Medicine Called Zavegepant (PF-07930207) in Children With a History of Migraine
NCT06995729Acute Treatment of Migraine
Pfizer
Phase 1
16
District of Columbia, Georgia, Minnesota, Nebraska, New York, North Carolina, Ohio, Oklahoma
2025-05-16
Active, closed
Study of PF-07220060 With Letrozole in Adults With HR-positive HER2-negative Breast Cancer Who Have Not Received Anticancer Treatment for Advanced/Metastatic Disease
NCT06760637Breast Cancer
DrugsAtirmociclib·Abemaciclib·Ribociclib·Palbociclib
Pfizer
Phase 3
1,035
Alabama, Arizona, Arkansas, California, Colorado, District of Columbia, Florida, Georgia
2025-01-06
Recruiting
A Study to Learn About a Study Medicine Called Ibuzatrelvir in Adult and Adolescent Patients With COVID-19 Who Are Not Hospitalized But Are at Risk For Severe Disease
NCT06679140COVID-19 SARS-CoV-2 Infection
DrugIbuzatrelvir
Pfizer
Phase 3
2,330
Alabama, Arkansas, California, Colorado, District of Columbia, Florida, Georgia, Idaho
2024-12-08
Active, closed
A Study to Learn About How a New Pneumococcal Vaccine Works in Infants
NCT06524414Pneumococcal Disease
DrugsPG4·Prevnar 20
Pfizer
Phase 2
605
Arkansas, California, District of Columbia, Florida, Idaho, Iowa, Kansas, Kentucky
2024-07-25
Active, closed
A Study to Learn About the Study Medicine PF-07934040 When Given Alone or With Other Anti-cancer Therapies in People With Advanced Solid Tumors That Have a Genetic Mutation.
NCT06447662Carcinoma, Pancreatic Ductal, Colorectal Neoplasms, Carcinoma, Non-Small-Cell Lung
Pfizer
Phase 1
64
Arkansas, California, Colorado, District of Columbia, Michigan, Missouri, North Carolina, Ohio
2024-06-27
Active, closed
A Study to Learn About the Study Medicine Called PF-07220060 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment
NCT06105632Advanced or Metastatic Breast Cancer
DrugsExemestane·Everolimus·Fulvestrant
Pfizer
Phase 2
333
California, District of Columbia, Montana, Texas
2024-01-09
Active, closed
A Study to Learn About The COVID-19 (Study) Vaccine (Called COMIRNATY) in People That Are Less Than 21 Years Old.
NCT05295290Myocarditis
Pfizer
Phase 4
319
California, Connecticut, District of Columbia, Florida, Georgia, Indiana, Louisiana, Massachusetts
2022-11-21
Recruiting
A Study to Learn About How 20-Valent Pneumococcal Conjugate Vaccine Works in a Real-world Setting
NCT05452941Pneumonia
Pfizer
Observational
12,500
California, Connecticut, District of Columbia, Georgia, Kentucky, Louisiana, Maryland, Massachusetts
2022-10-27
Active, closed
Study With Elranatamab Versus Lenalidomide in Patients With Newly Diagnosed Multiple Myeloma After Transplant
NCT05317416Multiple Myeloma
DrugsElranatamab·Lenalidomide
Pfizer
Phase 3
854
Arizona, California, District of Columbia, Florida, Georgia, Illinois, Kansas, Michigan
2022-03-25
Recruiting
EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe Disease
NCT05261139COVID-19
DrugsNirmatrelvir·Ritonavir
Pfizer
Phase 3
160
Arizona, California, District of Columbia, Florida, Georgia, Illinois, Louisiana, Maryland
2022-03-07
Recruiting
Efficacy and Safety Study of Rimegepant for the Preventative Treatment of Migraine in Pediatric Subjects
NCT05156398Migraine
DrugRimegepant
Pfizer
Phase 3
640
Arkansas, California, Colorado, District of Columbia, Florida, Georgia, Idaho, Illinois
2022-02-28
Active, closed
Study of Talazoparib With Enzalutamide in Men With DDR Gene Mutated mCSPC
NCT04821622Prostate Cancer
DrugsTalazoparib·Enzalutamide
Pfizer
Phase 3
599
Alabama, Arizona, California, Connecticut, District of Columbia, Florida, Georgia, Illinois
2021-05-12
Recruiting
Long-term Safety Study of Rimegepant in Pediatric Subjects for the Acute Treatment of Migraine
NCT04743141Acute Treatment of Migraine
DrugRimegepant
Pfizer
Phase 3
600
Arizona, California, Colorado, Connecticut, District of Columbia, Florida, Georgia, Illinois
2021-04-28
Recruiting
Randomized Study in Children and Adolescents With Migraine: Acute Treatment
NCT04649242Pediatric Migraine
Pfizer
Phase 3
2,100
Alabama, Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Florida
2021-01-15
Active, closed
Study Of Palbociclib Combined With Chemotherapy In Pediatric Patients With Recurrent/Refractory Solid Tumors
NCT03709680Ewing Sarcoma, Solid Tumors, Rhabdoid Tumor, Rhabdomyosarcoma
DrugsTemodar·Topotecan·Cytoxan·Palbociclib
Pfizer
Phase 2
128
Alabama, Arizona, California, Colorado, District of Columbia, Florida, Georgia, Illinois
2019-05-24
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Cite this view

Priya Life Science (2026). Clinical trial register: industry-sponsored studies with a US investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 7 October 2026. https://priyalifescience.com/clinical-trials-usa/state/district-of-columbia

Query this register directly
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About this register

This register is built from ClinicalTrials.gov, the trial registry run by the U.S. National Library of Medicine. It includes every industry-sponsored study on the registry that lists at least one investigative site in the US and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 9,122 studies in total at the last sync on 07 Oct 2026, 03:16 UTC. Academic and other non-industry sponsors are out of scope by design. The full list can be downloaded as CSV or queried as JSON through the register API.

This page shows the 25 of those studies with a site in District of Columbia that also match the filters currently applied.

How many clinical trials are recruiting in District of Columbia?

15 of the 25 studies on this page are recruiting new participants as of the 07 Oct 2026, 03:16 UTC sync. A further 0 have not yet opened recruitment, 10 are active but closed to new participants, and 0 are enrolling by invitation only. Eligibility for any study is decided by its study team.

Summary by phase

Studies by phase (District of Columbia), 25 studies
PhaseStudiesRecruitingShare
Phase 3141056%
Phase 24116%
Phase 1218%
Phase 1/2218%
Observational114%
Phase 2/3114%
Phase 4104%

Most active sponsors

Lead sponsors with the most studies (District of Columbia)
Lead sponsorStudiesRecruiting
Pfizer2515
Listing here is informational and not medical advice; eligibility is determined by each study team. Compare pay for the teams running these studies in the US Pharma Salary Guide, see who's behind them in the US Company Directory, or track approvals on the FDA Approvals Tracker. For Irish, UK and EU sites, see the Ireland, UK and EU registers.