SuspendedNot applicableNCT04638751
Official study title

ARGONAUT: Stool and Blood Sample Bank for Cancer Patients

Study summary

ARGONAUT is a longitudinal, prospective, observational study that will enroll up to 5,000 advanced-stage cancer patients of diverse racial backgrounds to collect data used to develop precision microbiome medicines and for the identification of clinically actionable cancer-specific biomarkers to guide therapeutic decisions. Four types of solid tumor cancers will be profiled including non-small cell lung cancer (NSCLC), triple negative breast cancer (TNBC), colorectal cancer (CRC) and pancreatic cancer. Healthy control subjects without a cancer diagnosis will also be studied, comprised of individuals at high risk for CRC and healthy individuals at low risk for CRC. Risk assessment will be based on family history or past neoplastic findings during CRC screening. Data collected from this study will be used to develop the most effective new therapies, via microbiome optimization, all to the benefit of patients and the physicians treating them. Stool and blood samples will be collected longitudinally and analyzed to determine the impact of gut microbiome composition and function on the immune system and efficacy of the treatment. Currently enrolling the CRC, high risk, and low risk cohorts. Subjects who meet the entry criteria will provide up to 5 samples each of blood and stool over a 2-year period. Approximately 10%-20% of the subjects will provide colon tissue samples, either from research biopsies during Standard of Care (SOC) screening colonoscopy or retained surgical tissue from colectomy. Electronic health records will be obtained at various times for up to 8 years, to collect tumor imaging results and any other updated medical data, with no additional samples collected. In select cases, stool and blood samples will be collected beyond 2 years.

Ask AI to explain this study
Start here

Key things to know

Main goalNot specified

This describes the study’s primary purpose.

What is being studiedImmunotherapy and Chemotherapy

Plus 2 other study approaches.

Who it may be forNon-small cell lung cancer (NSCLC)

These are broad labels—not an eligibility decision.

Checked against the public recordLast updated Sep 18, 2026 · Source: ClinicalTrials.gov

Is enrollment open?Suspended

Ask the study team to confirm whether enrollment is open.

What kind of study?Not applicable

Observational

Where is it offered?10 U.S. locations

Locations may change over time.

Who runs it?Persephone Biosciences

Study sponsor

01
Study overview

What this study is about

Purpose
Not specified
Study type
Observational
Phase
Not applicable
Sponsor
Persephone Biosciences
Interventions being studied
Drug: Immunotherapy; Drug: Chemotherapy; Procedure: CRC surgical resection; Procedure: Colonoscopy
02
Explore related studies

How this study is categorized

These labels come from structured fields and exact terms in the public record.

03
Public criteria

Who may be able to participate

The sponsor separates these requirements into two groups. You do not need to interpret them alone—use them to guide a conversation with the study team.

Requirements people may need to meetInclusion criteria
  • Men or women who are ≥ 18 years old with stage III or stage IV non-small cell lung cancer (NSCLC), colorectal cancer, triple-negative breast cancer, or pancreatic cancer treated by a particular cancer treatment for the first time, OR healthy subjects undergoing a standard of care colonoscopy
  • Subjects able to provide written informed consent
Reasons someone may not be able to joinExclusion criteria
  • Subjects with known HIV, Hepatitis A, Hepatitis B, Hepatitis C, or SARS-CoV2
  • Subjects without the mental capacity to complete either a written or online questionnaire, alone or with assistance, or make sound decisions
  • Women who are pregnant or who plan on becoming pregnant
  • Women who are nursing

Important: This is the sponsor’s public criteria, not a determination of eligibility. The study team must review your individual situation.

04
Study sites

U.S. locations

  • Knowledge Research CenterOrange, California
  • SDG Clinical Research, IncSan Diego, California
  • Persephone Biosciences, Inc.San Diego, California
  • L&A Morales Healthcare, IncMiami, Florida
  • Baton Rouge General Medical CenterBaton Rouge, Louisiana
  • University Medical Center New OrleansNew Orleans, Louisiana
  • Mid-Hudson Medical ResearchNew Windsor, New York
  • Kroger Health, The Little ClinicCincinnati, Ohio
  • Southwest Family Medicine AssociatesDallas, Texas
  • Biopharma InformaticHouston, Texas

Source and freshness
Processed from ClinicalTrials.gov. Last public update: Sep 18, 2026. Always confirm current availability with the study team.

View original record ↗