NCT04996706

Brief Summary

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.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
21,000

participants targeted

Target at P75+ for all trials

Timeline
59mo left

Started Aug 2021

Longer than P75 for all trials

Geographic Reach
1 country

10 active sites

Status
enrolling by invitation

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress49%
Aug 2021Mar 2031

First Submitted

Initial submission to the registry

August 3, 2021

Completed
6 days until next milestone

First Posted

Study publicly available on registry

August 9, 2021

Completed
7 days until next milestone

Study Start

First participant enrolled

August 16, 2021

Completed
9.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 31, 2031

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 31, 2031

Last Updated

February 27, 2026

Status Verified

February 1, 2026

Enrollment Period

9.6 years

First QC Date

August 3, 2021

Last Update Submit

February 25, 2026

Conditions

Keywords

Lymphatic DiseasesNeoplasms by Histologic TypeNeoplasmsLymphoproliferative DisordersImmunoproliferative DisordersImmune System Diseases

Outcome Measures

Primary Outcomes (1)

  • Overall Survival (OS)

    Time from date of diagnosis to date of death

    Time Frame: Short (<5 years), medium (5-10 years), and long-term (>10 years)

Secondary Outcomes (2)

  • Event Free Survival (EFS)

    Time Frame: Short (<5 years), medium (5-10 years), and long-term (>10 years)

  • Lymphoma Specific Survival (LSS)

    Time Frame: Short (<5 years), medium (5-10 years), and long-term (>10 years)

Eligibility Criteria

Age18 Years+
Sexall
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Newly diagnosed non-Hodgkin Lymphoma willing to provide a research blood sample, return enrollment and follow-up questionnaires, and allow access to medical records.

You may qualify if:

  • Newly diagnosed non-Hodgkin Lymphoma (NHL), within 183 days of enrollment
  • Patients may have been treated as long as initial NHL diagnosis is within 6 months of enrollment
  • years of age or older

You may not qualify if:

  • \- Lymphoma diagnosis greater than 184 days from date of consent

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (10)

Mayo Clinic in Arizona

Scottsdale, Arizona, 85259, United States

Location

Mayo Clinic in Florida

Jacksonville, Florida, 32224-9980, United States

Location

University of Miami: Sylvester Comprehensive Cancer Center

Miami, Florida, 33136, United States

Location

Winship Cancer Institute of Emory University

Atlanta, Georgia, 30322, United States

Location

University of Iowa

Iowa City, Iowa, 52242, United States

Location

Mayo Clinic

Rochester, Minnesota, 55902, United States

Location

Washington University School of Medicine in St. Louis

St Louis, Missouri, 63110, United States

Location

Weill Cornell Medical College

New York, New York, 10065, United States

Location

University of Rochester Medical Center

Rochester, New York, 14642, United States

Location

MD Anderson Cancer Center

Houston, Texas, 77030, United States

Location

Related Links

Biospecimen

Retention: SAMPLES WITH DNA

1. Blood Collection 2. DNA - Blood 3. Tumor DNA and RNA Extraction 4. Formalin Fixed Paraffin Embedded Tissue (FFPE) H\&E Slide 5. Tissue Microarrays (TMA) 6. Clinical Residual

MeSH Terms

Conditions

Lymphoma, Non-HodgkinLymphatic DiseasesNeoplasms by Histologic TypeNeoplasmsLymphoproliferative DisordersImmunoproliferative DisordersImmune System Diseases

Condition Hierarchy (Ancestors)

LymphomaHemic and Lymphatic Diseases

Study Officials

  • James R Cerhan, MD,PhD

    Mayo Clinic

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 3, 2021

First Posted

August 9, 2021

Study Start

August 16, 2021

Primary Completion (Estimated)

March 31, 2031

Study Completion (Estimated)

March 31, 2031

Last Updated

February 27, 2026

Record last verified: 2026-02

Data Sharing

IPD Sharing
Will share

Sharing of data can be requested through the LEO Cohort website.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
Will become available upon publication
Access Criteria
Data sharing can occur only after going through group approvals.
More information

Locations