A Phase Ia Safety and Tolerability Study of BL-001
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ClinicalTrials.gov Identifier: NCT05818306 |
Recruitment Status :
Recruiting
First Posted : April 18, 2023
Last Update Posted : April 18, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Healthy Volunteers | Drug: BL-001 Drug: Placebo | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 32 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Randomized, parallel-group, double-blind, placebo-controlled, single-center, multiple dose safety & tolerability Phase Ia study |
Masking: | Triple (Participant, Care Provider, Investigator) |
Masking Description: | Both the Investigator and the subjects are not aware of the treatment administered. |
Primary Purpose: | Health Services Research |
Official Title: | A Phase Ia, Randomized, Parallel-group, Double-blind, Placebo-controlled, Single-center, Multiple Dose Safety and Tolerability Study of Ascending Doses of BL-001 Oral Capsules Administered for 28 Days to Healthy Volunteers |
Actual Study Start Date : | February 20, 2023 |
Estimated Primary Completion Date : | June 2023 |
Estimated Study Completion Date : | June 2023 |
Arm | Intervention/treatment |
---|---|
Experimental: Cohort A Dose 1
Oral, daily administration of BL-001 Dose 1 or Placebo randomized 3:1 (BL-001: Placebo)
|
Drug: BL-001
Live biological product BL-001 Drug: Placebo 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
Live biological product BL-001 Drug: Placebo 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
Live biological product BL-001 Drug: Placebo 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
Live biological product BL-001 Drug: Placebo Placebo |
- Safety and tolerability of BL-001 [ Time Frame: Treatment-emergent adverse events are reviewed from screening through Day 28 ]Safety and tolerability of BL-001 as measured by treatment-emergent adverse events
- Intestinal engraftment [ Time Frame: Fecal samples are collected by the subjects at home from screening through Day 28 ]The intestinal engraftment of the microbiota with BL-001 component strains
- Intestinal microbiota changes [ Time Frame: Fecal samples are collected by the subjects at home from screening through Day 28 ]Changes in the intestinal microbiota, including microbial taxonomic and functional characterization as well as diversity metrics
- Metabolite changes in stool samples [ Time Frame: Fecal samples are collected by the subjects at home from screening through Day 28 ]Analysis of metabolite changes in stool samples
- 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 ]Analysis of metabolite changes in plasma samples

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Ages Eligible for Study: | 18 Years to 55 Years (Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Key Inclusion criteria
- Informed consent: signed written informed consent before inclusion in the study
- Sex and Age: men/women, 18-55 years old inclusive
- Body Mass Index (BMI): 18.5-30 kg/m2 inclusive
- 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
- 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
- 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
- Electrocardiogram 12-leads (supine position): clinically significant abnormalities
- Physical findings: clinically significant abnormal physical findings which could interfere with the objectives of the study
- Bowel movements: on average ≥3 stools per day or <3 stools per week
- Laboratory analyses: clinically significant abnormal laboratory values indicative of physical illness
- 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
- 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
- Gastrointestinal: evidence of acute or chronic gastrointestinal disorders
- 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

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05818306
Contact: Paolo Baroldi, Chief Medical Officer | +1.619.592.5268 | info@bloomscience.com |
Switzerland | |
CROSS Research S.A. | Recruiting |
Arzo, Canton Ticino, Switzerland, CH-6864 | |
Contact: Milko Radicioni +41.91.64.04.450 clinic@croalliance.com | |
Principal Investigator: Milko Radicioni |
Study Director: | Paolo Baroldi | Bloom Science |
Responsible Party: | Bloom Science |
ClinicalTrials.gov Identifier: | NCT05818306 |
Other Study ID Numbers: |
BL-001-1001 |
First Posted: | April 18, 2023 Key Record Dates |
Last Update Posted: | April 18, 2023 |
Last Verified: | April 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Bloom Science Bloom BL-001 Microbiome |
LBP Live Biological Product Live Biotherapeutic Product |