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Phase 1b/2a Randomized Double-blind Study to Investigate Safety Tolerability PK PD Preliminary Efficacy of Oral Administration of SNIPR001 in Patients With Hematologic Malignancy Scheduled for Allogeneic Hematopoietic Stem-Cell Transplant Receiving FQ Prophylaxis & Harboring FQR Ecoli Pre-Transplant

Sponsor: SNIPR Biome Aps. • ClinicalTrials.gov ID: NCT06938867

Registry updated: 2026-10-08

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Description

This is a Phase 1b/2a study in allogenic hematopoietic stem cell transplant patients to investigate the safety, PK, PD and preliminary efficacy of multiple oral administrations of SNIPR001 when given concomitantly with SoC levofloxacin. The study consists of two parts. Part 1 will include 24 randomized and dosed patients. Part 2 will be added with amendment 3 and will include 42 randomized and dosed patients. Thus, approximately 66 patients will be randomized 1:1 to oral dosing of SNIPR001 or matching placebo, to be taken concomitantly with SoC levofloxacin prophylaxis. Subjects will be followed until 100 days post allo-HSCT transplant.

Interventions

SNIPR001 consists of genetically modified bacteriophages specifically targeting Escherichia coli (Biological)
SNIPR001 is a live biotherapeutic product
Placebo 10 mL (Other)
Placebo 10 mL matching to SNIPR001 will be administered.

Eligibility criteria

Inclusion Criteria: 1. Male or female ≥18 years of age at the time of consent. 2. Patient is able and willing to provide written informed consent prior to any study-related procedure. 3. Confirmed diagnosis of any hematologic malignancy. 4. Planned to undergo an allogeneic hematopoietic stem cell transplant. 5. Patient is scheduled to receive fluoroquinolone (levofloxacin) prophylaxis. 6. Colonized with Fluoroquinolone resistant E. coli (patients will be pre-screened for the presence of at least 1 Fluoroquinolone resistant E. coli colony \[cultured from a perianal swab\] performed at the local hospital lab, qualitative assessment +/-). 7. Female patients must be of non-childbearing potential (surgically sterile or menopausal for at least 1 year) or agree to use a highly effective contraception method, per local standard, while receiving treatment with SNIPR001 and for 28 days after the last dose of SNIPR001. Male patients must utilize highly effective contraceptive precautions for the duration of SNIPR001 dosing and for 28 days after the last dose of SNIPR001. 8. Female patients of childbearing potential must have a negative serum pregnancy test at Screening and a negative serum or urine test on Day -2 prior to SNIPR001 dosing. 9. Are willing to comply with all scheduled visits, laboratory tests, and other study procedures, including drinking the study medications, in the opinion of the Investigator. Exclusion Criteria: 1. Use of any treatment (approved or investigational product) considered to interact with the study drug, or which might impact the outcome of the study within 14 days (or 5 half-lives of the approved or investigational product, whichever is greater) prior to the first administration of study drug, as judged by the Investigator. 2. Use or planned use of any antibiotics with intrinsic activity against E. coli in the gut (e.g., beta-lactam antibiotics) between Pre-Screening and until the end of the SNIPR001/placebo treatment period, with the exception of TMP-SMX and levofloxacin. 3. Have known hypersensitivity or allergy to any component of SNIPR001, levofloxacin and/or Alka-Seltzer treatment. 4. Unwilling or unable to comply with the requirements of this Protocol, including providing stool samples. 5. Female patients who are pregnant or lactating. 6. Have abnormal liver enzymes (alanine aminotransferase \[ALT\] or aspartate aminotransferase \[AST\] \>2 × upper limit of normal \[ULN\] or total bilirubin \>1.5 × ULN). 7. Have hepatic disease associated with impaired liver function. 8. Have a history of Achilles tendinopathy or tendon rupture.

Conditions

E Coli Infections Allogenic Transplant Patients

Locations

City of Hope — Duarte, California, United States
University of California, San Francisco — San Francisco, California, United States
Johns Hopkins University — Baltimore, Maryland, United States
Dana Farber Cancer Institute — Boston, Massachusetts, United States
University of Minnesota — Minneapolis, Minnesota, United States
Memorial Sloan Kettering Cancer Center — New York, New York, United States
Weill Cornell Medicine — New York, New York, United States
UPMC — Pittsburgh, Pennsylvania, United States
University of Texas MD Anderson Cancer Center — Houston, Texas, United States
Fred Hutchinson Cancer Center — Seattle, Washington, United States

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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