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Trackers› Clinical trials› Connecticut
Clinical trial register · United States · industry-sponsored

Clinical Trials in Connecticut, 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 9125 matching records are in this view (non-industry sponsors are out of scope by design, not truncated). Synced 08 Oct 2026, 03:16 UTC
9125
Studies in scope
industry-sponsored, all four open statuses
4951
Recruiting now
open to new participants
2192
Lead sponsors
across recruiting studies
Top states
California 84 Florida 69 Colorado 41 Texas 40 Massachusetts 38
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
AstraZeneca7 Pfizer3 Eli Lilly and Company2 Hoffmann-La Roche2 Relay Therapeutics, Inc.2
State
California84 Florida69 Colorado41 Texas40 Massachusetts38
All 47 states
Target enrolment
to

Trials with a site in Connecticut

30 of 9125 studies
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Status
Study
Lead sponsor
Phase
Enrol
US states
Start
Recruiting
A Phase 1 Study of IM-1617 in Participants With Advanced Cancer
NCT07578571Colorectal Cancer, Non-Small Cell Lung Cancer, Breast Cancer, Esophageal Cancer
Immunome, Inc.
Phase 1
175
Connecticut, Florida, Massachusetts, Texas
2026-05-21
Recruiting
An Investigational Study of BG-75202 Alone and in Combination With Other Therapeutic Agents in Adults With Advanced Solid Tumors
NCT07222267Breast Cancer, Advanced Solid Tumor
DrugBG-75202
BeOne Medicines
Phase 1
86
Alabama, Connecticut, Missouri, Texas, Washington
2025-12-11
Recruiting
Palazestrant in Combination With Ribociclib for the First-line Treatment of ER+/HER2- Advanced Breast Cancer
NCT07085767Breast Cancer, Locally Advanced Breast Cancer, Metastatic Breast Cancer, ER Positive Breast Cancer
DrugsPalazestrant·Ribociclib·Letrozole
Olema Pharmaceuticals, Inc.
Phase 3
1,000
Arkansas, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Illinois
2025-11-03
Recruiting
Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer
NCT06982521PIK3CA Mutation, HER2- Negative Breast Cancer, Hormone Receptor Positive Tumor, Breast Cancer
DrugsCapivasertib·Fulvestrant
Relay Therapeutics, Inc.
Phase 3
540
Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia
2025-08-26
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 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 of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence
NCT06492616Breast Cancer
DrugsElacestrant·Tamoxifen·Exemestane·Anastrozole
Stemline Therapeutics, Inc.
Phase 3
4,220
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, District of Columbia, Florida
2024-09-27
Recruiting
A Study of PARG Inhibitor ETX-19477 in Patients With Advanced Solid Malignancies
NCT06395519Advanced or Metastatic Solid Tumors, Breast Cancer, Ovarian Cancer, Prostate Cancer
858 Therapeutics, Inc.
Phase 1/2
120
Arizona, Connecticut, Florida, Illinois, Massachusetts, Minnesota, New York, Ohio
2024-05-13
Active, closed
A Study to Learn About Vepdegestrant When Given With PF-07220060 to People With Advanced or Metastatic Breast Cancer.
NCT06206837Breast Cancer
DrugsVepdegestrant·Atirmociclib
Pfizer
Phase 1/2
71
Arkansas, California, Colorado, Connecticut, Michigan, New Jersey, New York, Texas
2024-02-19
Recruiting
Study of the Bria-IMT Regimen and CPI vs Physicians' Choice in Advanced Metastatic Breast Cancer.
NCT06072612Breast Cancer, Metastatic Breast Cancer, Breast Neoplasm, Breast Cancer Metastatic
DrugsRetifanlimab·Cyclophosphamide
BriaCell Therapeutics Corporation
Phase 3
404
Arizona, California, Connecticut, Florida, Georgia, Illinois, Indiana, Kansas
2023-12-05
Recruiting
A Phase III Study of Dato-DXd With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer (TROPION-Breast05)
NCT06103864Breast Cancer
DrugsDato-DXd·Durvalumab·Nab-paclitaxel·Gemcitabine
AstraZeneca
Phase 3
625
Alabama, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Hawaii
2023-11-23
Active, closed
OP-1250 (Palazestrant) vs. Standard of Care for the Treatment of ER+/HER2- Advanced Breast Cancer
NCT06016738Breast Cancer, Advanced Breast Cancer, Metastatic Breast Cancer, ER Positive Breast Cancer
DrugsPalazestrant·Exemestane·Anastrozole·Letrozole
Olema Pharmaceuticals, Inc.
Phase 3
510
Arizona, California, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois
2023-11-16
Active, closed
A Phase III Randomised Study to Evaluate Dato-DXd and Durvalumab for Neoadjuvant/Adjuvant Treatment of Triple-Negative or Hormone Receptor-low/HER2-negative Breast Cancer
NCT06112379Breast Cancer
DrugsDato-DXd·Epirubicin·Xeloda·Olaparib
AstraZeneca
Phase 3
1,902
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia
2023-11-14
Recruiting
Real World Treatment Experience of Patients With Breast, Lung, Ovarian, Multiple Myeloma, or Acute Myelogenous Leukemia Using Remote Symptom Monitoring
NCT05974150Breast Cancer, Lung Cancer, Multiple Myeloma, Ovarian Cancer
Carevive Systems, Inc.
Observational
25
Connecticut, Illinois, North Carolina, Ohio
2023-07-19
Recruiting
A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast Cancer Post CDK4/6i and Endocrine Combination Therapy
NCT05646862Breast Cancer
DrugsBupropion·Omeprazole·Alpelisib·Inavolisib
Hoffmann-La Roche
Phase 3
420
California, Colorado, Connecticut, Florida, Georgia, Kentucky, Massachusetts, Michigan
2023-06-07
Active, closed
A Study of PARG Inhibitor IDE161 in Participants With Advanced Solid Tumors
NCT05787587Advanced or Metastatic Solid Tumors, Breast Cancer, Ovarian Cancer, Prostate Cancer
DrugsKeytruda·Pembrolizumab
IDEAYA Biosciences
Phase 1
216
Arizona, California, Colorado, Connecticut, Florida, Georgia, Illinois, Indiana
2023-04-18
Recruiting
First-in-Human Study of Tersolisib (STX-478) as Monotherapy and in Combination With Other Antineoplastic Agents in Participants With Advanced Solid Tumors
NCT05768139Breast Cancer, Solid Tumors, Adult
DrugsTersolisib·Imlunestrant·Tamoxifen·Exemestane
Eli Lilly and Company
Phase 1/2
880
California, Colorado, Connecticut, Florida, Georgia, Iowa, Louisiana, Massachusetts
2023-04-17
Recruiting
Phase 3 Study to Evaluate the Efficacy and Safety of HER2/Neu Peptide GLSI-100 (GP2 + GM-CSF) in HER2/Neu Positive Subjects
NCT05232916Breast Cancer
Greenwich LifeSciences, Inc.
Phase 3
2,250
Alabama, Arizona, California, Colorado, Connecticut, District of Columbia, Florida, Georgia
2022-12-16
Active, closed
Gedatolisib Plus Fulvestrant With or Without Palbociclib vs Standard-of-Care for the Treatment of Patients With Advanced or Metastatic HR+/HER2- Breast Cancer (VIKTORIA-1)
NCT05501886Breast Cancer
DrugsGedatolisib·Alpelisib·Palbociclib·Fulvestrant
Celcuity Inc
Phase 3
701
Alabama, Arizona, Arkansas, California, Connecticut, Florida, Georgia, Illinois
2022-12-08
Active, closed
A Study of Dato-DXd With or Without Durvalumab Versus Investigator's Choice of Therapy in Patients With Stage I-III Triple-negative Breast Cancer Without Pathological Complete Response Following Neoadjuvant Therapy (TROPION-Breast03)
NCT05629585Breast Cancer
DrugsDato-DXd·Xeloda·Durvalumab·Keytruda
AstraZeneca
Phase 3
1,174
Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida
2022-11-28
Active, closed
A Study of Dato-DXd Versus Investigator's Choice Chemotherapy in Patients With Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer, Who Are Not Candidates for PD-1/PD-L1 Inhibitor Therapy (TROPION-Breast02)
NCT05374512Breast Cancer
DrugsEribulin·Dato-DXd·Nab-paclitaxel·Capecitabine
AstraZeneca
Phase 3
644
California, Colorado, Connecticut, District of Columbia, Florida, Georgia, Kentucky, Michigan
2022-05-16
Recruiting
First-in-Human Study of Mutant-selective PI3Kα Inhibitor, RLY-2608, as a Single Agent in Patients With Advanced Solid Tumors and in Combination With Endocrine Therapy +/- a CDK4/6 or CDK4 Inhibitor in Patients With Advanced Solid Tumors or Advanced Breast Cancer
NCT05216432PIK3CA Mutation, Solid Tumor, Adult, HER2-negative Breast Cancer, Breast Cancer
DrugsRLY-2608·Atirmociclib·Ribociclib·Palbociclib
Relay Therapeutics, Inc.
Phase 1
930
Arizona, California, Colorado, Connecticut, Florida, Illinois, Indiana, Massachusetts
2021-12-08
Active, closed
Trastuzumab Deruxtecan (T-DXd) Alone or in Sequence With THP, Versus Standard Treatment (ddAC-THP), in HER2-positive Early Breast Cancer
NCT05113251Breast Neoplasms, Breast Cancer, HER2-positive Early Breast Cancer
DrugsHerzuma·Perjeta·Herceptin·Adriamycin
AstraZeneca
Phase 3
927
Arkansas, California, Connecticut, Indiana, Kentucky, Louisiana, Minnesota, Nevada
2021-10-25
Active, closed
DNA-guided Second Line Adjuvant Therapy for High Residual Risk, Estrogen Receptor Positive, HER-2 Negative Breast Cancer (DARE)
NCT04567420Breast Cancer
DrugsPalbociclib·Fulvestrant
Criterium, Inc.
Phase 2
70
Arizona, California, Colorado, Connecticut, Georgia, Louisiana, Nebraska, New Mexico
2021-02-09
Active, closed
DS8201a and Pembrolizumab in Participants With Locally Advanced/Metastatic Breast or Non-Small Cell Lung Cancer
NCT04042701Breast Cancer, Non-small Cell Lung Carcinoma
DrugsTrastuzumab deruxtecan·Keytruda·Pembrolizumab
Daiichi Sankyo
Phase 1
115
California, Connecticut, Florida, Maryland, Massachusetts, Missouri, Pennsylvania, Texas
2020-02-10
Active, closed
Endocrine Therapy With or Without Abemaciclib (LY2835219) Following Surgery in Participants With Breast Cancer
NCT03155997Breast Cancer
DrugAbemaciclib
Eli Lilly and Company
Phase 3
5,637
Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Florida
2017-07-12
Recruiting
MammaPrint, BluePrint, and Full-genome Data Linked With Clinical Data to Evaluate New Gene EXpression Profiles
NCT03053193Breast Cancer
Agendia
Observational
30,000
Alabama, Alaska, Arizona, California, Colorado, Connecticut, Delaware, Florida
2017-04-28
Active, closed
Basket Study of Entrectinib (RXDX-101) for the Treatment of Patients With Solid Tumors Harboring NTRK 1/2/3 (Trk A/B/C), ROS1, or ALK Gene Rearrangements (Fusions)
NCT02568267Breast Cancer, Cholangiocarcinoma, Colorectal Cancer, Head and Neck Neoplasms
DrugEntrectinib
Hoffmann-La Roche
Phase 2
534
Arizona, California, Colorado, Connecticut, District of Columbia, Florida, Georgia, Illinois
2015-11-19
Active, closed
Olaparib as Adjuvant Treatment in Patients With Germline BRCA Mutated High Risk HER2 Negative Primary Breast Cancer
NCT02032823Breast Cancer
DrugOlaparib
AstraZeneca
Phase 3
1,837
Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware
2014-04-22
Active, closed
Comparison of Fulvestrant (FASLODEX™) 250 mg and 500 mg in Postmenopausal Women With Oestrogen Receptor Positive Advanced Breast Cancer Progressing or Relapsing After Previous Endocrine Therapy.
NCT00099437Breast Cancer
DrugFulvestrant
AstraZeneca
Phase 3
736
Arizona, California, Connecticut, Florida, Illinois, Maryland, Michigan, Missouri
2005-02-13
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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 8 October 2026. https://priyalifescience.com/clinical-trials-usa/state/connecticut

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: 9,125 studies in total at the last sync on 08 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 30 of those studies with a site in Connecticut that also match the filters currently applied.

How many clinical trials are recruiting in Connecticut?

15 of the 30 studies on this page are recruiting new participants as of the 08 Oct 2026, 03:16 UTC sync. A further 0 have not yet opened recruitment, 15 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 (Connecticut), 30 studies
PhaseStudiesRecruitingShare
Phase 317856.7%
Phase 15316.7%
Phase 1/24213.3%
Observational226.7%
Phase 2206.7%

Most active sponsors

Lead sponsors with the most studies (Connecticut)
Lead sponsorStudiesRecruiting
AstraZeneca71
Pfizer31
Eli Lilly and Company21
Hoffmann-La Roche21
Olema Pharmaceuticals, Inc.21
Relay Therapeutics, Inc.22
858 Therapeutics, Inc.11
Agendia11
BeOne Medicines11
BriaCell Therapeutics Corporation11
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.