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Safety, Tolerability, and PK of LBP-EC01 in Patients With Lower Urinary Tract Colonization Caused by E. Coli

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT04191148
Recruitment Status : Recruiting
First Posted : December 9, 2019
Last Update Posted : January 7, 2020
Information provided by (Responsible Party):
Locus Biosciences

Brief Summary:
Study LBx-1001 is a multi-center randomized, double-blind study to assess the safety, tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) of LBP-EC01 in patients with indwelling urinary catheters, or requiring intermittent catheterization, and/or patients with asymptomatic bacteriuria caused by Escherichia coli (E. coli). This study population has been selected because LBP-EC01 is a phage cocktail where active bacterial host engagement is required to allow for amplification of the phage and evaluation of the safety and PK of the phage cocktail. Eligible patients will require confirmation of colonization with a urine sample taken within 10 days of randomization that cultures contain ≥10^3 E. coli CFU/mL, without the patient having clinical signs or symptoms of an active urinary tract infection (UTI) requiring antibiotic treatment. Patients should have E. coli as the primary colonizing bacteria and must not have a secondary bacterial colonization at levels equal to or greater than that seen from E. coli.

Condition or disease Intervention/treatment Phase
Urinary Tract Infections Drug: LBP-EC01 Drug: Lactated Ringers Solution for Injection Phase 1

Detailed Description:

Approximately 30 patients 18 years of age or older with a history of urinary tract infection or colonization caused by E. coli who have indwelling urinary catheters, or who require intermittent catheterization, and/or patients with asymptomatic bacteriuria caused by E. coli colonization (≥10^3 CFU/mL) on microbiological diagnosis, without clinical signs or symptoms of infection requiring antibiotic treatment will be enrolled. Patients will be screened for presence of E. coli colonization (≥10^3 CFU/mL) prior to randomization and evaluated for potential bacterial susceptibility to LBP-EC01.

Secondary Objective: To evaluate the pharmacodynamics (PD) of LBP-EC01. Exploratory Objective: To explore the influence of LBP-EC01 on the urinary tract microbiota.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 30 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: 2:1 randomized, placebo controlled, blinded study
Masking: Triple (Participant, Care Provider, Investigator)
Masking Description: Double blind
Primary Purpose: Basic Science
Official Title: A Multi-Center Randomized, Double-Blind Study to Assess the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of LBP-EC01 in Patients With Lower Urinary Tract Colonization Caused by E. Coli
Actual Study Start Date : December 30, 2019
Estimated Primary Completion Date : December 2020
Estimated Study Completion Date : February 2021

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: LBP-EC01
crPhage cocktail
Drug: LBP-EC01
crPhage cocktail

Placebo Comparator: Placebo
Lactated Ringer's solution, injection, USP
Drug: Lactated Ringers Solution for Injection

Primary Outcome Measures :
  1. Safety and tolerability of LBP-EC01: Number of participants with treatment-related adverse events as assessed by DAIDS v2.1 [ Time Frame: 35 days ]
    Number of participants with treatment-related adverse events as assessed by DAIDS v2.1

  2. Pharmacokinetics of LBP-EC01: Level of LBP-EC01 in urine and blood measured by quantitative plaquing assay [ Time Frame: 28 days ]
    Level of LBP-EC01 in urine and blood measured by quantitative plaquing assay

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Provision of signed and dated informed consent form.
  2. Stated willingness to comply with all study procedures and availability for the duration of the study.
  3. Males or females 18 years of age or older.
  4. Patients with a lower urinary tract colonization caused by E. coli (≥10^3 CFU/mL) and who meet at least one of the following criteria:

    • Has an indwelling urinary catheter and medical documentation of a urinary tract infection by E. coli within the past 12 months
    • Requires intermittent catheterization and medical documentation of a urinary tract infection by E. coli within the past 12 months
    • Has medical documentation of a history of asymptomatic bacteriuria (i.e., lower urinary tract colonization) with E. coli at least once in the past 12 months
  5. Patients must have experience with urinary catheterization or have Medical Monitor approval if the patient does not have prior experience with catheterization.
  6. In good general health as evidenced by medical history and physical examination.
  7. Women of childbearing potential and men with female partners of childbearing potential must use two forms of effective contraception, at least 1 of which is a physical barrier method, during the study and which is recommended to continue for 2 weeks after completing the study.

Exclusion Criteria:

  1. Patients with clinical signs of active UTI or other infection requiring antimicrobial treatment. These may include dysuria, urinary frequency, urinary urgency, suprapubic discomfort and flank pain in addition to non-specific symptoms of urinary leakage, change in voiding habits, worsening muscle spasm, increasing autonomic dysreflexia, sweating, malaise, and fever or hypothermia. Analgesic use is permitted.
  2. Patients who have received Gram-negative bacteria antimicrobials within 14 days of randomization.

    Note: Patients who are currently only receiving antibiotics with only Gram-positive activity (e.g., vancomycin, daptomycin, linezolid) to treat active infections against Gram-positive non-UTIs can be included in the trial.

  3. Presence of a surgically-modified bladder, except for a repaired ruptured bladder.
  4. History of severe autonomic dysreflexia, which is defined as those patients who have a spinal cord injury and who have had a documented sudden increase in systolic blood pressure of greater than 40 mm Hg due to an irritation or stimulation (including bladder or bowel irritation) below the level of the spinal cord injury. Autonomic dysreflexia can include findings of hypertensive crisis or emergency, clinically significant bradycardia/tachycardia, severe headache or other severe reaction requiring an acute intervention, so consultation with the Medical Monitor should take place if a history of severe autonomic dysreflexia is suspected but not clearly identified.
  5. Active severe, progressive or uncontrolled renal, hepatic, hematologic, gastrointestinal, endocrine, pulmonary, cardiac, or neurologic disease per the investigator's discretion.
  6. Any malignancies within the past 5 years (except those in remission).
  7. Unless deemed acceptable by the Investigator, prescription drugs, over-the-counter (OTC) medications and supplements that acidify the urine are excluded.
  8. Patients who have had allergic reactions to similar compounds, or any excipients.
  9. Participation in an investigational drug or device study within 1 month (or 7 half-lives of drug, whichever is longer) prior to randomization.
  10. Patients who are pregnant or expecting to conceive, are breast feeding or are planning to breast feed, within 1 month of completion of the study.

Information from the National Library of Medicine

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 identifier (NCT number): NCT04191148

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Contact: Jamie Kime 919-495-4510

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United States, California
Alliance Research Centers Recruiting
Laguna Hills, California, United States, 92653
Contact: Justin Deck    949-680-3490   
Sponsors and Collaborators
Locus Biosciences

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Responsible Party: Locus Biosciences Identifier: NCT04191148    
Other Study ID Numbers: LBx-1001
First Posted: December 9, 2019    Key Record Dates
Last Update Posted: January 7, 2020
Last Verified: December 2019

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Locus Biosciences:
Additional relevant MeSH terms:
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Urinary Tract Infections
Urologic Diseases
Pharmaceutical Solutions
Calcium-Regulating Hormones and Agents
Physiological Effects of Drugs