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CompletedNCT05818306Updated Jun 27, 2023

A Phase Ia Safety and Tolerability Study of BL-001

A Phase 1 interventional study of BL-001 and Placebo in Healthy Volunteers, sponsored by Bloom Science. Completed at 1 site in Switzerland. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-06-27.

Sponsored by Bloom Science · Phase 1, Interventional, and Health services research

Phase
Phase 1
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
01

Study summary

To investigate the safety and tolerability of BL-001 in healthy volunteers for 28 consecutive days.

Read the detailed description

This is a Phase 1a randomized, parallel-group, double-blind, placebo-controlled, single-center, multiple dose study to evaluate the safety and tolerability of BL-001.

02

Conditions studied

  • Healthy Volunteers

Keywords

  • Bloom Science
  • Bloom
  • BL-001
  • Microbiome
  • LBP
  • Live Biological Product
  • Live Biotherapeutic Product
03

In context

Lead sponsor

This is the only study on the registry with Bloom Science as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Key Inclusion criteria

  1. Informed consent: signed written informed consent before inclusion in the study
  2. Sex and Age: men/women, 18-55 years old inclusive
  3. Body Mass Index (BMI): 18.5-30 kg/m2 inclusive
  4. Vital signs: systolic blood pressure 100-139 mmHg, diastolic blood pressure 50-89 mmHg, heart rate 50-90 bpm, measured after 5 min at rest in the sitting position
  5. Full comprehension: ability to comprehend the full nature and purpose of the study, including possible risks and side effects; ability to co-operate with the investigator and to comply with the requirements of the entire study
  6. Contraception and fertility (women only): women of child-bearing potential must be using at least one of the protocol defined and reliable methods of contraception

Key Exclusion criteria

  1. Electrocardiogram 12-leads (supine position): clinically significant abnormalities
  2. Physical findings: clinically significant abnormal physical findings which could interfere with the objectives of the study
  3. Bowel movements: on average ≥3 stools per day or \<3 stools per week
  4. Laboratory analyses: clinically significant abnormal laboratory values indicative of physical illness
  5. Allergy: ascertained or presumptive hypersensitivity to the formulation's ingredients; history of anaphylaxis to drugs or allergic reactions in general, which the Investigator considers may affect the outcome of the study
  6. Diseases: significant history of renal, hepatic, gastrointestinal, cardiovascular, respiratory, skin, hematological, endocrine, psychiatric or neurological diseases that may interfere with the aim of the study
  7. Gastrointestinal: evidence of acute or chronic gastrointestinal disorders
  8. Medications and probiotics: probiotics, nutraceuticals, and medications, including over the counter medications and herbal remedies for 2 weeks and antibiotics for 3 months before the start of the study. Hormonal contraceptives for women will be allowed
05

Study design

Phase
Phase 1
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
32 participants (actual)

Study arms

  • Experimental
    Cohort A Dose 1

    Oral, daily administration of BL-001 Dose 1 or Placebo randomized 3:1 (BL-001: Placebo)

    Drug: BL-001 · Drug: Placebo

  • Experimental
    Cohort B Dose 2

    Oral, daily administration of BL-001 Dose 2 or Placebo randomized 3:1 (BL-001: Placebo)

    Drug: BL-001 · Drug: Placebo

  • Experimental
    Cohort C Dose 3

    Oral, daily administration of BL-001 Dose 3 or Placebo randomized 3:1 (BL-001: Placebo)

    Drug: BL-001 · Drug: Placebo

  • Experimental
    Cohort D Dose 4

    Oral, daily administration of BL-001 Dose 4 or Placebo randomized 3:1 (BL-001: Placebo)

    Drug: BL-001 · Drug: Placebo

Interventions

  • DrugBL-001

    Live biological product BL-001

  • DrugPlacebo

    Placebo

06

What researchers measure

Primary outcomes

  1. Safety and tolerability of BL-001

    Safety and tolerability of BL-001 as measured by treatment-emergent adverse events

    Time frame: Treatment-emergent adverse events are reviewed from screening through Day 28

Secondary outcomes

  1. Intestinal engraftment

    The intestinal engraftment of the microbiota with BL-001 component strains

    Time frame: Fecal samples are collected by the subjects at home from screening through Day 28

  2. Intestinal microbiota changes

    Changes in the intestinal microbiota, including microbial taxonomic and functional characterization as well as diversity metrics

    Time frame: Fecal samples are collected by the subjects at home from screening through Day 28

  3. Metabolite changes in stool samples

    Analysis of metabolite changes in stool samples

    Time frame: Fecal samples are collected by the subjects at home from screening through Day 28

  4. Metabolite changes in plasma samples

    Analysis of metabolite changes in plasma samples

    Time frame: Venous blood samples are collected by venipuncture from a forearm vein at visits starting at screening through Day 28

07

Study locations

1 site
  • CROSS Research S.A.
    Arzo, Canton Ticino CH-6864, Switzerland
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 27, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05818306
Lead sponsor
Bloom Science
Responsible party
Sponsor
First posted
Apr 18, 2023
Start date
Feb 20, 2023
Primary completion
May 19, 2023
Completion
Jun 2, 2023
Last update
Jun 27, 2023

Study contacts

Paolo Baroldi
study director · Bloom Science

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2023. You cannot join it, but the record below documents what was studied.

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