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Allogeneic Hematopoietic Stem Cell TransplantationPhase 1NCT04995653

A Multiple Dose Study to Evaluate Safety, Tolerability, PK, and Efficacy of SER-155 in Adults Undergoing HSCT

A Phase 1 study testing Vancomycin Pre-Treatment and SER-155 in people with Allogeneic Hematopoietic Stem Cell Transplantation, run by Seres Therapeutics, Inc. at 13 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

An Open-Label and Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Efficacy of SER-155 in Adults Undergoing Hematopoietic Stem Cell Transplantation to Reduce the Risk of Infection and Graft vs. Host Disease Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Vancomycin Pre-Treatment and SER-155
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
60 participants
Where
13 sitesUnited States
Study dates
24 Nov 2021to 23 Jul 2024
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male and female subjects ≥ 18 years of age undergoing HSCT.
  • Planning to undergo allogeneic hematopoietic stem cell transplantation from a human leukocyte antigen matched related donor, haploidentical related donor, HLA-matched unrelated donor, or HLA 1-antigen mismatched unrelated or related donor, with either bone marrow or peripheral blood stem cells as a graft source, and with any conditioning regimen

Who cannot join

  • Severe colitis of any etiology or active/currently-treated inflammatory bowel disease (IBD) or total colectomy.
  • Evidence of relapse or progression of hematologic malignancy (minimal residual disease is allowed).
  • Transplant using umbilical cord blood or ex vivo T-cell-depleted HSCT
  • Receipt of chimeric antigen receptor T-cell (CAR-T) therapy.
  • Received a fecal microbiota transplant (FMT) or any live microbial therapeutic within 3 months prior to Screening.
  • Known allergy or intolerance to oral vancomycin.
  • Concomitant participation or participation within 14 days or 5 half-lives of another investigational unapproved treatment, whichever is longer.

Trial locations and contacts

13 sites in 1 country.

13 sites in 1 country

United States13 sites
  • Harvard Medical School - Massachusetts General Hospital Cancer Center

    Boston, Massachusetts, 02114

  • University of North Carolina Chapel Hill

    Chapel Hill, North Carolina, 27514

  • University of Chicago Medical Center

    Chicago, Illinois, 60637

  • City of Hope

    Duarte, California, 91010

  • University of Florida - Division of Hematology & Oncology

    Gainesville, Florida, 32610

  • Banner Health - MD Anderson Medical Center

    Gilbert, Arizona, 85234

  • Mayo Clinic - Jacksonville

    Jacksonville, Florida, 32224

  • University of California, Los Angeles - Division of Hematology-Oncology

    Marina del Rey, California, 90292

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065

  • Mayo Clinic - Rochester

    Rochester, Minnesota, 55905

  • Mayo Clinic - Scottsdale

    Scottsdale, Arizona, 85259

  • Fred Hutchinson Cancer Research Center

    Seattle, Washington, 98109

  • Georgetown (MedStar Health)

    Washington D.C., District of Columbia, 21044

Other trials in United States

About this study

Official title: A Phase 1b Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Efficacy of SER-155 in Adults Undergoing Hematopoietic Stem Cell Transplantation (HSCT) to Reduce the Risk of Infection and Graft vs. Host Disease (GvHD)

An Open-Label and Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Efficacy of SER-155 in Adults Undergoing Hematopoietic Stem Cell Transplantation to Reduce the Risk of Infection and Graft vs. Host Disease

Read the detailed description

This is a Phase 1b randomized, double-blind, placebo-controlled, multiple dose, multicenter study designed to evaluate the safety, efficacy, and microbiome alterations associated with SER-155 dosing, after microbiome conditioning with oral vancomycin, in adult subjects aged ≥18 years who are undergoing Hematopoietic Stem Cell Transplantation (HSCT).

Being tested
Vancomycin Pre-Treatment, Vancomycin Placebo, SER-155, SER-155 Placebo
Keywords
Microbiome, stem cell transplant

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Vancomycin Pre-TreatmentDrug

    Four times daily dosing with Vancomycin

  • Vancomycin PlaceboDrug

    Four times daily dosing with Vancomycin Placebo

  • SER-155Drug

    Once daily dosing with SER-155

  • SER-155 PlaceboDrug

    Once daily dosing with SER-155 placebo

Study groups in NCT04995653
Study groupRoleWhat they receive
Cohort 1 - Open Label StudyExperimentalVancomycin \& SER-155
Receives: Drug: Vancomycin Pre-Treatment; Drug: SER-155
Cohort 2 - Randomized, Double-Blind, Placebo-Controlled StudyExperimentalVancomycin \& SER-155 OR Vancomycin placebo \& SER-155 placebo
Receives: Drug: Vancomycin Pre-Treatment; Drug: Vancomycin Placebo; Drug: SER-155; Drug: SER-155 Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Safety and tolerability of SER-155, including incidence and severity of adverse events, serious adverse events, or adverse events of special interest

    Incidence and severity of participants with adverse events, serious adverse events, or adverse events of special interest

    Measured: Day 100

  2. Engraftment of SER-155

    Prevalence of SER-155 strains in subject stool measured before and after treatment courses

    Measured: Day 100

Secondary outcomes (3)
  1. Abundance of Enterococcus and Enterobacteriaceae

    Measured: Day 100

  2. Combined and individual incidence of bloodstream infections, gastrointestinal infections, and acute Graft-versus Host Disease

    Measured: Day 100

  3. Incidence and duration of febrile neutropenia

    Measured: Day 100

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Aug 2021
  2. Study start24 Nov 2021
  3. Primary completion23 Jul 2024
  4. Study completion23 Jul 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
There are 2 parts or cohorts for the trial. Cohort 1 is an open-label study. Cohort 2 is double-blind, randomized, placebo-controlled study.
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04995653
Sponsor's protocol ID
SER-155-001
Status last verified
Sep 2024
First submitted
13 Jul 2021
Last updated
1 Oct 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Vancomycin Pre-Treatment and SER-155 in people with Allogeneic Hematopoietic Stem Cell Transplantation, run by Seres Therapeutics, Inc. at 13 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 1 Oct 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 13 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Safety and tolerability of SER-155, including incidence and severity of adverse events, serious adverse events, or adverse events of special interest (time frame: Day 100). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Oct 2024.

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