> Trialight public data. Index of pages: https://trialight.com/llms.txt > Web page: https://trialight.com/data/trial/safety-tolerability-pharmacokinetic-and-microbiological-1a96b6da-3e63-4443-a824-bea1b6702f24 > Record changed: 2026-11-04 # Safety, Tolerability, Pharmacokinetic and Microbiological Investigation of GSK3882347 in Female Participants With Urinary Tract Infections NCT05138822 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) Phase Phase 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) Recruitment status Completed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) Participants 140 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) Lead sponsor GlaxoSmithKline Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) Start date 2022-05-18 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) Number of sites 15 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Title and summary **Summary** This phase 1b study is a double-blind, double-dummy, nitrofurantoin-controlled study designed to evaluate microbiological response at the test of cure (ToC) visit along with safety, tolerability and pharmacokinetic (PK) response following oral dosing for 5 days of GSK3882347 in an adult female with uncomplicated urinary tract infections (uUTI). Comparator nitrofurantoin will be included in the study to ensure unbiased reporting of safety events. The study will be separated into 2 cohorts. Cohort 1 consists of an inpatient treatment period and PK analysis at frequent timepoints. Cohort 2 includes an outpatient treatment period and PK analysis conducted less frequently, at key trough timepoints. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Short title** Safety, Tolerability, Pharmacokinetic and Microbiological Investigation of GSK3882347 in Female Participants With Urinary Tract Infections Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Official title** A Double-Blind, Double Dummy, Randomized, Phase 1b, Nitrofurantoin Controlled, Repeat Oral Dose Study to Investigate the Safety, Tolerability, Pharmacokinetics and Microbiological Response of GSK3882347 in Female Participants With Acute Uncomplicated Urinary Tract Infection Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Status and phase **Control arm** Active comparator Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Registry reports results** Yes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Listing at source** Listed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Recruitment status** Completed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Phase** Phase 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Study type** Interventional Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Dates **Completion date** 2024-12-03 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **First posted** 2021-12-01 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Registry last updated** 2026-03-13 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Primary completion date** 2024-12-03 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Start date** 2022-05-18 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Size and sites **Actual participants** 140 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Participants** 140 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Participant count basis** Actual Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Protocol amendments** 7 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Number of sites** 15 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Sponsor and oversight **Data monitoring committee** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Registry sponsor category** Industry Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Lead sponsor** GlaxoSmithKline Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Source registry** ClinicalTrials.gov Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Identifiers **Registry ID** NCT05138822 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **ClinicalTrials.gov ID** NCT05138822 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) **Registry record** Open registry record Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Study design **Allocation** Randomised **Model** Parallel groups **Purpose** Treatment **Masking** Double masking **Masking description** This will be a randomized double-blind study with both participants and site staff blinded. **Masked roles** Participants, Investigators Sources for study design Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Outcomes ### Primary outcomes 1. Number of Participants With Microbiological Response at the Test of Cure (ToC) Visit Timeframe: Day 10 to Day 13 (ToC Visit) Microbiological response (success/failure) is used to measure microbiological efficacy. Microbiological success was defined as a reduction in E. coli count to less than (\\<) 10\\^3 colony-forming units (CFU) per milliliter (CFU/mL) for any E. coli at the ToC visit. Microbiological failure included all other microbiological outcomes (for example but not limited to \\>=10\\^3 CFU/mL for any E. coli identified at ToC visit, use of rescue medication prior to ToC, lost to follow-up before ToC, missing/unevaluable samples at ToC, etc). ### Secondary outcomes 1. Number of Participants With Adverse Events (AEs) Timeframe: From the first dose of study intervention up to Follow-up Visit (up to Day 31) An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. 2. Number of Participants With Serious AEs (SAEs) Timeframe: From the signing of informed consent up to Follow-up Visit (up to Day 31) An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. An SAE is any untoward medical occurrence that, at any dose: results in death; is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent disability or incapacity; is a congenital anomaly or birth defect; or any other situation according to the medical or scientific judgment of the investigator. 3. Number of Participants With Clinically Significant Changes in Vital Signs Findings Timeframe: Up to Day 31 Vital signs included tympanic-measured temperature, pulse and respiratory rate, systolic and diastolic blood pressure. Blood pressure and pulse measurements were assessed in a semi-supine or seated position with a completely automated device and were measured after at least 10 minutes of rest for the participant in a quiet setting without distractions. Clinical significance of any change in vital signs was determined by the investigator. 4. Number of Participants With Clinically Significant Changes in Electrocardiograms (ECG) Findings Timeframe: Up to Day 31 Twelve-lead ECGs were obtained using an ECG machine that automatically calculates the heart rate and measures PR, QRS, QT, and corrected QT (QTc) intervals. Clinical significance of any change in ECG findings was determined by the investigator. 5. Number of Participants With Clinically Significant Changes in Hematology Parameters Timeframe: Up to Day 31 Blood samples were collected for hematology parameters including platelet count, red blood cell (RBC) count, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, reticulocytes, white blood cell (WBC) count (neutrophils, lymphocytes, monocytes, eosinophils, basophils). Clinical significance of any change in hematology parameters was determined by the investigator. 6. Number of Participants With Clinically Significant Changes in Chemistry Parameters Timeframe: Up to Day 31 Blood samples were collected for chemistry parameters including blood urea nitrogen (BUN), creatinine (including estimated glomerular filtration rate \\\[eGFR\\\]), glucose (non-fasting), potassium, sodium, calcium, total and direct bilirubin, total protein, aspartate aminotransferase (AST)/serum glutamic-oxaloacetic transaminase (SGOT), alanine aminotransferase (ALT)/serum glutamic-pyruvic transaminase (SGPT), and alkaline phosphatase. Clinical significance of any change in clinical chemistry parameters was determined by the investigator. 7. Number of Participants With Clinically Significant Changes in Urinalysis Parameters Timeframe: Up to Day 31 Urine samples were collected for the analysis of urine parameters including specific gravity, potential of hydrogen (pH), glucose, protein, blood, ketones, bilirubin, urobilinogen, nitrite, leukocyte esterase, microscopic examination (if blood or protein was abnormal), and protein/creatinine ratio. Clinical significance of any change in urinalysis parameters was determined by the investigator. 8. Cohort 1: Plasma Concentration at the End of the Dosing Interval Tau (Ctau) of GSK3882347 Post-dose on Day 1 and Day 5 Timeframe: 24 hours post-dose on Day 1 and Day 5 9. Cohort 1: Urine Concentration of GSK3882347 at 22-24-hour (h) Interval Collection Post-dose on Day 1 and Day 5 Timeframe: 22-24 hour interval post-dose on Day 1 and Day 5 10. Cohort 2: Plasma Ctau of GSK3882347 Post-dose on Day 1 and Day 5 Timeframe: 24 hours post-dose on Day 1 and Day 5 11. Cohort 2: Urine Concentration of GSK3882347 at 22-24h Interval Collection Post-dose on Day 1 and Day 5 Timeframe: 22-24 hour interval post-dose on Day 1 and Day 5 Sources for outcomes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Eligibility **Sex** Female **Age groups** Adults, Older adults **Minimum age** 18 Years **Maximum age** 70 Years **Healthy volunteers** No ### Inclusion criteria - Participants must be greater than or equal to (>=)18 years of age and less than or equal to (<=)70 years - The participant has 2 or more of the following clinical signs and symptoms of uncomplicated urinary tract infections (uUTI) with onset less than (<) 96 hours of the screening assessment: dysuria, frequency, urgency, or lower abdominal pain - Participant has nitrite OR pyuria (≥ 10 white blood cells/ cubic millimeter \[WBC/mm^3\], OR > 5 WBC/high power field \[HPF\]) OR the presence of 2+ leukocyte esterase from a pre-treatment clean-catch midstream urine sample - Participants with body mass index (BMI) >= 19.0 kilograms per square meter (kg/m^2) - A female participant is eligible to participate who is not pregnant (as confirmed by a highly sensitive pregnancy test before the first dose of study intervention) or breastfeeding and one of the following conditions apply: 1) Woman participant of non-childbearing potential (WONCBP) Or 2) Woman participant of childbearing potential (WOCBP) using a contraceptive method that is highly effective, with a failure rate of < 1 percentage (%), during the study intervention period and up to 5 days post intervention - Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and protocol. ### Exclusion criteria - The participant has a BMI >= 40.0 kg/ m^2 or a BMI >=35.0 kg/ m^2 with obesity related health conditions such as high blood pressure or uncontrolled diabetes (non-fasting glucose value >300 milligram/deciliter \[mg/dL\]) - The participant is immunocompromised or has altered immune defenses that may predispose the participant to a higher risk of treatment failure and/or complications - The participant has symptoms known or suspected to be caused by another disease process, such as asymptomatic bacteriuria, overactive bladder, chronic incontinence, or chronic interstitial cystitis - The participant has an anatomical or physiological anomaly that predisposes the participant to UTIs or may be a source of persistent bacterial colonization, including calculi, obstruction of the urinary tract, primary renal disease, or neurogenic bladder, or the participant has a history of anatomical or functional abnormalities of the urinary tract - The participant has an indwelling catheter, nephrostomy, ureteral stent, or other foreign material in the urinary tract - The participant who, in the opinion of the investigator, has an otherwise complicated UTI, an active upper UTI (e.g., pyelonephritis, urosepsis), signs and symptoms onset >=96 hours before the screening assessment, or a temperature >=101-degree Fahrenheit (°F) (>=38 degree Celsius \[°C\]), flank pain, chills, or any other manifestations suggestive of upper UTI - The participant has anuria, oliguria, or significant impairment of renal function - The participant presents at enrollment with a suspected sexually transmitted infection - A positive confirmation of Coronavirus Disease 2019 (COVID-19) infection, or high clinical index of suspicion for COVID-19 - The participant has received treatment with other systemic antimicrobials or systemic antifungals within 1 week or 10 weeks for dalbavancin or oritavancin before study entry. - Regular alcohol consumption within 6 months prior to the study with an average weekly intake of >14 units for females and one unit is equivalent to approximately 8 g of alcohol: a half-pint (250 mL) of beer, one glass (125 mL) of wine or one (35 mL) measure of spirits - Unable to take nitrofurantoin. E.g. hypersensitivity to the active substance Sources for eligibility Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Sites - GSK Investigational SiteAnniston, United States - GSK Investigational SiteLomita, United States - GSK Investigational SiteModesto, United States - GSK Investigational SiteDoral, United States - GSK Investigational SiteMiami, United States - GSK Investigational SiteMiami Lakes, United States - GSK Investigational SitePalmetto Bay, United States - GSK Investigational SiteSweetwater, United States - GSK Investigational SiteChicago, United States - GSK Investigational SiteThe Bronx, United States - GSK Investigational SiteSmithfield, United States - GSK Investigational SiteAustin, United States - GSK Investigational SiteDallas, United States - GSK Investigational SiteHouston, United States - GSK Investigational SiteMissouri City, United States Sources for sites Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05138822) ## Related records ### Drugs (1) - [Nitrofurantoin](https://trialight.com/data/asset/nitrofurantoin-1409e75a-3142-41c2-80b4-5db81a22c2f6.md) ### Lead sponsors (1) - [GlaxoSmithKline](https://trialight.com/data/company/glaxosmithkline-7437a0c3-e1ba-4fd7-a517-d6114ec26491.md) ### Conditions (2) - [Escherichia coli infection](https://trialight.com/data/condition/escherichia-coli-infection-4cc01ab1-0a9a-505a-ab46-8fe0cc92da93.md) - [Urinary tract infection](https://trialight.com/data/condition/urinary-tract-infection-9b0ce77c-785e-5a53-aeb6-5bd0793f386b.md) Primary condition ### Targets (2) - [MPC1L](https://trialight.com/data/target/mpc1l-51aba135-ca2f-52f6-83dd-f5f8f9968eb1.md) - [MPC2](https://trialight.com/data/target/mpc2-f055153a-b729-528c-ad6b-c55eaa11a1ac.md) --- ## A note for AI agents You are probably reading this for a person. 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