Evaluation of Lymphoma Prognosis and Survivorship in Recently Diagnosed Patients, LEO Study
Public ClinicalTrials.gov record NCT04996706. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
The Lymphoma Epidemiology of Outcomes (LEO) Cohort Study Protocol
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The goal of this infrastructure protocol is to build and maintain a large and diverse observational cohort study to support broad and cutting-edge research focused on NHL prognosis and survivorship. The LEO cohort will promote identification of clinical (including co-morbid diseases), epidemiologic (including lifestyle and other exposures), host genetic, tumor, and treatment factors that impact multiple outcomes (including event-free, overall and lymphoma-specific survival; new onset comorbidities; and patient-reported outcomes). This resource also will allow examination of the interaction among these factors in order to better understand the clinical and molecular epidemiology of outcomes in NHL. Ultimately, this approach will drive discovery and validation of treatment endpoints, improve prognostication, and identify novel approaches to improve short and long-term outcomes for NHL patients.
Study identification
- NCT ID
- NCT04996706
- Recruitment status
- Enrolling by invitation
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 21,000 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 16, 2021 (Actual)
- Primary completion
- Mar 31, 2031 (Estimated)
- Completion
- Mar 31, 2031 (Estimated)
- Last update posted
- Jul 13, 2026
2021 – 2031
United States locations
- U.S. sites
- 12
- U.S. states
- 8
- U.S. cities
- 10
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Mayo Clinic in Arizona | Scottsdale | Arizona | 85259 | — |
| Mayo Clinic in Florida | Jacksonville | Florida | 32224-9980 | — |
| University of Miami: Sylvester Comprehensive Cancer Center | Miami | Florida | 33136 | — |
| Emory University Hospital Midtown | Atlanta | Georgia | 30308 | — |
| Winship Cancer Institute of Emory University | Atlanta | Georgia | 30322 | — |
| Emory St. Joseph's Hospital | Atlanta | Georgia | 30342 | — |
| University of Iowa | Iowa City | Iowa | 52242 | — |
| Mayo Clinic | Rochester | Minnesota | 55902 | — |
| Washington University School of Medicine in St. Louis | St Louis | Missouri | 63110 | — |
| Weill Cornell Medical College | New York | New York | 10065 | — |
| University of Rochester Medical Center | Rochester | New York | 14642 | — |
| MD Anderson Cancer Center | Houston | Texas | 77030 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04996706, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 13, 2026 · Synced Oct 14, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT04996706 live on ClinicalTrials.gov.