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Dose-Ranging Study of GSK2140944 in the Treatment of Subjects with Suspected or Confirmed Gram-Positive Acute Bacterial Skin and Skin Structure Infections

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GSK study ID
116704
See study documents
Clinicaltrials.gov ID
NCT02045797
See results summary
EudraCT ID
Not applicable
EU CT Number
Not applicable
Trial status
Completed
Completed
Overview
Eligibility
Locations
Study documents
Results summary
Plain language summaries
Additional information

Trial overview

Official title: A Phase II, Randomized, Two-Part, Multicenter, Dose-Ranging Study in Adult Subjects Evaluating the Safety, Tolerability, and Efficacy of GSK2140944 in the Treatment of Subjects with Suspected or Confirmed Gram-Positive Acute Bacterial Skin and Skin Structure Infections
Trial description: GSK2140944 belongs to a novel structural class of antibiotics – Bacterial Type II Topoisomerase Inhibitors (BTI). This is a Phase II, randomized, two-part, multicenter study designed to select the optimal dose by further characterizing the safety, tolerability and PK of GSK 2140944 and by evaluating efficacy in subjects requiring in-patient medical care to treat their suspected or confirmed Gram-positive acute bacterial skin and skin structure infections (ABSSSI). The selected dose will be used in future studies.
Primary purpose:
Treatment
Trial design:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Allocation:
Randomized
Primary outcomes:

Number of participants with composite of the cure rate as measured by clinical response and outcome at the early efficacy visit combined with withdrawal rate

Timeframe: Up to Day 3

Secondary outcomes:

Number of participants with clinical response and outcome at early efficacy visit

Timeframe: Up to Day 3

Number of participants with clinical response and outcome at the post therapy visit (Day 12-18)

Timeframe: Day 12 to Day 18

Number of participants with clinical response and outcome at the final follow up visit (Day 21-28)

Timeframe: Day 21 to Day 28

Number of pathogens with microbiological response and outcome at early efficacy visit for Staphylococcus aureus (SA) pathogen in lesion sample

Timeframe: Up to Day 3

Number of pathogens with microbiological response and outcome at early efficacy visit for Methicillin-resistant Staphylococcus aureus (MRSA) in lesion sample

Timeframe: Day 3

Number of pathogens with microbiological response and outcome at early efficacy visit for Methicillin-susceptible Staphylococcus aureus (MSSA) in lesion sample

Timeframe: Up to Day 3

Number of pathogens with microbiological response and outcome at early efficacy visit for other Gram-positive aerobic pathogens in lesion sample

Timeframe: Up to Day 3

Number of pathogens with microbiological response and outcome at early efficacy visit for all Gram-positive aerobic pathogens in lesion sample

Timeframe: Up to Day 3

Number of pathogens with microbiological response and outcome at early efficacy visit for SA, MRSA and all Gram-positive aerobic pathogens in blood sample

Timeframe: Up to Day 3

Number of pathogens with microbiological response and outcome at post therapy visit for SA pathogen in lesion sample

Timeframe: Day 12 to Day 18

Number of pathogens with microbiological response and outcome at post therapy visit for MRSA in lesion sample

Timeframe: Day 12 to Day 18

Number of pathogens with microbiological response and outcome at post therapy visit for MSSA in lesion sample

Timeframe: Day 12 to Day 18

Number of pathogens with microbiological response and outcome at post therapy visit for other Gram-positive aerobic pathogens in lesion sample

Timeframe: Day 12 to Day 18

Number of pathogens with microbiological response and outcome at post therapy visit for all Gram-positive aerobic pathogens in lesion sample

Timeframe: Day 12 to Day 18

Number of pathogens with microbiological response and outcome at post therapy visit for SA, MRSA and all Gram-positive aerobic pathogens in blood sample

Timeframe: Day 12 to Day 18

Number of pathogens with microbiological response and outcome at follow up visit for SA pathogen in lesion sample

Timeframe: Day 21 to Day 28

Number of pathogens with microbiological response and outcome at follow up visit for MRSA in lesion sample

Timeframe: Day 21 to Day 28

Number of pathogens with microbiological response and outcome at follow up visit for MSSA in lesion sample

Timeframe: Day 21 to Day 28

Number of pathogens with microbiological response and outcome at follow up visit for other Gram-positive aerobic pathogens in lesion sample

Timeframe: Day 21 to Day 28

Number of pathogens with microbiological response and outcome at follow up visit for all Gram-positive aerobic pathogens in lesion sample

Timeframe: Day 21 to Day 28

Number of pathogens with microbiological response and outcome at follow up visit for SA, MRSA and all Gram-positive aerobic pathogens in blood sample

Timeframe: Day 21 to Day 28

Pharmacokinetic (PK) parameters (from GSK2140944 plasma concentration-time data): Maximum observed concentration (Cmax) on IV therapy

Timeframe: Predose, 1, 2, 2.5, 3, 6, 12 hours post dose on Day 1 to 3

PK parameters (from GSK2140944 plasma concentration-time data): Cmax on oral dose therapy

Timeframe: Predose, 1, 2, 3 hours after first orally administered drug and Day 7 to 10 (predose)

PK parameters (from GSK2140944 plasma concentration-time data): time to Cmax (tmax) on IV therapy

Timeframe: Predose, 1, 2, 2.5, 3, 6, 12 hours post dose on Day 1 to 3

PK parameters (from GSK2140944 plasma concentration-time data): tmax on oral dose therapy

Timeframe: Predose, 1, 2, 3 hours after first orally administered drug and Day 7 to 10 (predose)

PK parameters (from GSK2140944 plasma concentration-time data): area under the concentration-time curve from time zero (pre-dose) to time of the last quantifiable concentration [AUC (0-t)] and AUC over the dosing interval [AUC(0-tau)] on IV therapy

Timeframe: Predose, 1, 2, 2.5, 3, 6, 12 hours post dose on Day 1 to 3

PK parameters (from GSK2140944 plasma concentration-time data): AUC (0-t) and AUC(0-tau) on oral dose therapy

Timeframe: Predose, 1, 2, 3 hours after first orally administered drug and Day 7 to 10 (predose)

Number of participants demonstrating a decrease in GSK2140944 susceptibility when comparing isolates recovered from Baseline with those from any time post-Baseline skin specimens

Timeframe: Up to Day 28

Number of participants with adverse events (AEs) and serious adverse events (SAEs)

Timeframe: Up to Day 28

Change from Baseline in systolic blood pressure (SBP) and diastolic blood pressure (DBP)

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in pulse rate

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in respiratory rate

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in vital sign: body temperature

Timeframe: Baseline (Day 1) up to Day 28

Number of participants with maximum post-Baseline electrocardiogram (ECG) readings

Timeframe: Up to Day 28

Change from Baseline in clinical chemistry parameters: Alanine Aminotransferase (ALT), Alkaline Phosphatase (ALP), Aspartate Aminotransferase (AST), Follicle Stimulating Hormone (FSH) and Gamma Glutamyl Transferase (GGT)

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in clinical chemistry parameters: Albumin and Protein

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in clinical chemistry parameters: Bilirubin, Creatinine, Direct Bilirubin and Urate

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in clinical chemistry parameters: Calcium, Carbon Dioxide, Chloride, Glucose, Magnesium, Potassium, Sodium and Urea

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in clinical chemistry parameters: Creatinine Clearance, Estimated

Timeframe: Baseline (Day 1) up to Day 28

Estradiol values at Baseline

Timeframe: Baseline (Day 1)

Change from Baseline in hematology parameters: basophils, eosinophils, leukocytes, lymphocytes, monocytes, neutrophils and platelets

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in hematology parameters: Erythrocyte Mean Corpuscular hemoglobin Concentration (EMCHC) and Hemoglobin

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in hematology parameters: Erythrocyte mean corpuscular hemoglobin (EMCH)

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in hematology parameters: Erythrocyte mean corpuscular volume (EMCV)

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in hematology parameters: Erythrocytes

Timeframe: Baseline (Day 1) up to Day 28

Change from Baseline in hematology parameters: Hematocrit

Timeframe: Baseline (Day 1) up to Day 28

Number of participants with abnormal urinalysis dipstick results

Timeframe: Up to day 28

Interventions:
Drug: GSK2140944 Lyophile
Drug: GSK2140944 Capsules
Enrollment:
126
Observational study model:
Not applicable
Primary completion date:
2015-29-06
Time perspective:
Not applicable
Clinical publications:
William O’Riordan, Courtney Tiffany, Nicole Scangarella-Oman, Caroline Perry, Mohammad Hossain, Teri Ashton, Etienne Dumont. The Efficacy, Safety, and Tolerability of Gepotidacin (GSK2140944) in the Treatment of Patients with Suspected or Confirmed Gram-Positive Acute Bacterial Skin and Skin Structure Infections. Antimicrob Agents Chemother. 2017;61(6):e02095-16
Scangarella-Oman N, Ingraham KA, Tiffany CA, Tomsho L, Van Horn SF, Mayhew DN, Perry CR, Ashton TC, Dumont EF, Huang J, Brown JR, Miller LA.In vitro activity and microbiological efficacy of gepotidacin from a phase 2, randomized, multicenter, dose-ranging study in patients with acute bacterial skin and skin structure infections.Antimicrob Agents Chemother.2019; DOI: 10.1128/AAC.01302-19 PMID: 31818823
Medical condition
Infections, Bacterial
Product
gepotidacin
Collaborators
Not applicable
Study date(s)
March 2014 to June 2015
Type
Interventional
Phase
2

Participation criteria

Sex
Female & Male
Age
18+ years
Accepts healthy volunteers
No
  • The subject is an adult male at least 18 years of age or an adult female at least 18 years of age who meets one of the following criteria: A female of child-bearing potential who is either 1) sexually inactive by abstinence, 2) whose sole male partner has been sterilized, or 3) uses a contraceptive method with a failure rate of < 1%. Females of child-bearing potential must not become pregnant during the study. A female of non child- bearing potential, which includes: Females who are surgically sterile with a documented hysterectomy and/or bilateral oophorectomy; Females with a documented tubal ligation. If the procedure was done hysteroscopically, the effectiveness of tubal occlusion must have been documented by hysterosalpingogram post procedure (typically 3 months after procedure); Females who are post-menopausal, defined as amenorrhoeic for greater than 1 year. For women whose menopausal status is in doubt, a documented previous confirmatory blood sample with follicle-stimulating hormone (FSH) > 40 milli-international units per milliliter (MIU/mL) and estradiol <40 picograms per milliliter (<140 picomole per liter) would need to be confirmed or they will be required to use one of the contraception methods.
  • The subject has a diagnosis of ABSSSI suspected or documented to be caused by Gram-positive pathogens that requires of intravenous (IV) antibiotic treatment for which subjects is willing to receive treatment in an in-patient setting for at least 2 days.. ABSSSI is defined as one of the following: Wound infection (traumatic or post-surgical): an infection involving skin and subcutaneous tissue, characterized by purulent drainage from a wound with surrounding redness, edema, and/or induration of a minimum surface area of 75 square centimeter (cm^2) (e.g., the shortest distance of redness, edema, and/or induration extending at least 5 centimeter (cm) from the peripheral margin of the wound); Major cutaneous abscess: an infection characterized by a collection of pus within the dermis or deeper that is accompanied by redness, edema, and/or induration of a minimum surface area of 75 cm^2 (e.g., the shortest distance of redness, edema, and/or induration extending at least 5 cm from the peripheral margin of the abscess). Cellulitis: a diffuse skin infection characterized by a spreading area of redness, edema, and/or induration of a minimum surface area of 75 cm^2 Note: For subjects with more than one type of eligible lesion/wound or with multiple lesions of the same type, the investigator must clearly identify the lesion to be evaluated for study purposes. The identified lesion must be consistently chosen for assessment (including digital imaging) throughout the study. Incision and drainage (I&D) of the lesion is permitted prior to the first dose of study medication and will be allowed, per protocol, up to 24 hours after the start of the first dose of study medication.
  • The subject is pregnant or nursing.
  • The subject has an immune-compromising illness; including known human immunodeficiency virus (HIV) infection or acquired immunodeficiency syndrome (AIDS), organ (including bone marrow) transplant recipients, hematological malignancy, and immunosuppressive therapy, including high-dose corticosteroids (e.g., greater than 40mg prednisone or equivalent per day for greater than two weeks).
Inclusion and exclusion criteria
Inclusion criteria:
  • The subject is an adult male at least 18 years of age or an adult female at least 18 years of age who meets one of the following criteria: A female of child-bearing potential who is either 1) sexually inactive by abstinence, 2) whose sole male partner has been sterilized, or 3) uses a contraceptive method with a failure rate of < 1%. Females of child-bearing potential must not become pregnant during the study. A female of non child- bearing potential, which includes: Females who are surgically sterile with a documented hysterectomy and/or bilateral oophorectomy; Females with a documented tubal ligation. If the procedure was done hysteroscopically, the effectiveness of tubal occlusion must have been documented by hysterosalpingogram post procedure (typically 3 months after procedure); Females who are post-menopausal, defined as amenorrhoeic for greater than 1 year. For women whose menopausal status is in doubt, a documented previous confirmatory blood sample with follicle-stimulating hormone (FSH) > 40 milli-international units per milliliter (MIU/mL) and estradiol <40 picograms per milliliter (<140 picomole per liter) would need to be confirmed or they will be required to use one of the contraception methods.
  • The subject has a diagnosis of ABSSSI suspected or documented to be caused by Gram-positive pathogens that requires of intravenous (IV) antibiotic treatment for which subjects is willing to receive treatment in an in-patient setting for at least 2 days.. ABSSSI is defined as one of the following: Wound infection (traumatic or post-surgical): an infection involving skin and subcutaneous tissue, characterized by purulent drainage from a wound with surrounding redness, edema, and/or induration of a minimum surface area of 75 square centimeter (cm^2) (e.g., the shortest distance of redness, edema, and/or induration extending at least 5 centimeter (cm) from the peripheral margin of the wound); Major cutaneous abscess: an infection characterized by a collection of pus within the dermis or deeper that is accompanied by redness, edema, and/or induration of a minimum surface area of 75 cm^2 (e.g., the shortest distance of redness, edema, and/or induration extending at least 5 cm from the peripheral margin of the abscess). Cellulitis: a diffuse skin infection characterized by a spreading area of redness, edema, and/or induration of a minimum surface area of 75 cm^2 Note: For subjects with more than one type of eligible lesion/wound or with multiple lesions of the same type, the investigator must clearly identify the lesion to be evaluated for study purposes. The identified lesion must be consistently chosen for assessment (including digital imaging) throughout the study. Incision and drainage (I&D) of the lesion is permitted prior to the first dose of study medication and will be allowed, per protocol, up to 24 hours after the start of the first dose of study medication.
  • The subject has at least 1 additional sign or symptom of skin infection: fluctuation, heat/localized warmth, and pain/tenderness.
  • The subject has at least 1 systemic marker of infection at the time of screening: Lymphadenopathy (proximal to and within the drainage of the wound); Fever (>=38 degrees Celsius); white blood cells (WBC) elevation (>10000 /cubic millimetre [mm^3] or >10% immature neutrophils regardless of WBC count); C-reactive protein > upper limit of normal (ULN). Note: Systemic markers of infection are not required for subjects >70 years of age or for known or suspected (based on blood glucose levels) diabetics.
  • The subject has provided written, dated, informed consent and is willing and able to comply with the study protocol.
Exclusion criteria:
  • The subject is pregnant or nursing.
  • The subject has an immune-compromising illness; including known human immunodeficiency virus (HIV) infection or acquired immunodeficiency syndrome (AIDS), organ (including bone marrow) transplant recipients, hematological malignancy, and immunosuppressive therapy, including high-dose corticosteroids (e.g., greater than 40mg prednisone or equivalent per day for greater than two weeks).
  • Body mass index (BMI)>= 40.0 kilogram per square meter.
  • The subject has a serious underlying disease that could be imminently life-threatening, or is unlikely to survive for the duration of the study period.
  • The subject has a medical condition or requires medication that may be aggravated by inhibition of acetylcholinesterase, such as: the subject has poorly controlled asthma or chronic obstructive pulmonary disease at baseline, and, in the opinion, of the investigator is not stable on current therapy; the subject has acute severe pain, uncontrolled with conventional medical management; the subject has active peptic ulcer disease; the subject has parkinson’s disease; the subject has myasthenia gravis; the subject has history of seizure disorder requiring medications for control. this does not include a history of childhood febrile seizures; the subject has any evidence of mechanical obstruction of the urinary or digestive tracts.
  • The subject has had a diagnosis of C. difficile infection (CDI) within 90 days of screening
  • The subject has history of seizure disorder requiring medications for control. This does not include a history of childhood febrile seizures.
  • The subject is a chronic abuser of alcohol or illicit substances such that it jeopardizes ability to comply with the protocol
  • History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that, in the opinion of the investigator or Medical Monitor, contraindicates their participation
  • The subject has a PR Interval <120 or >220 millisecond (msec)
  • Corrected QT interval (QTc) >450msec or QTc >480msec for subjects with bundle branch block. Note: The QTc is the QT interval corrected for heart rate according to either Bazett’s formula (QTcB), Fridericia’s formula (QTcF), or another method, machine or manual overread. The QTc should be based on single or averaged QTc values of triplicate ECGs obtained over a brief recording period. It is essential that the same method for calculating QTc that was used at a subjects baseline visit be used for that subject for all subsequent visits.
  • The subject has QRS duration <70 or >120 msec.
  • The subject has pre-existing grade II atrioventricular block or higher, history of significant vasovagal and/or syncopal episodes, episodes of symptomatic bradycardia.
  • The subject has recent acute major blood loss with signs of hemodynamic instability.
  • The subject has liver function tests: alanine aminotransferase (ALT) >2x ULN; alkaline phosphatase and bilirubin >=1.5xULN (isolated bilirubin >1.5 x ULN is acceptable if bilirubin is fractionated and direct bilirubin <35%).
  • The subject has a current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones). Subjects with stable Hepatitis B and/or Hepatitis C will be eligible if they meet the liver function test criteria in criterion (ALT >2 × ULN; alkaline phosphatase and bilirubin ≥1.5 × ULN). Note: All subjects will be screened for Hepatitis B surface antigen and Hepatitis C ribonucleic acid (RNA), but these results will not be used to determine subject eligibility or subject continuation in the study after enrollment.
  • The subject has any skin condition or skin infection listed below: Secondarily infected animal/human bite; Infected burn; Infections of chronic ulcerative lesions (including diabetic foot infections and peripheral vascular disease) that are likely to be polymicrobial in nature, or caused by Gram-negative or anaerobic organisms that are unlikely to have a Gram-positive pathogen as the causative agent, (Note: Subjects with diabetic foot infections or peripheral vascular disease are eligible if they have a qualifying ABSSSI but diabetic foot infections are not eligible lesions for investigation); An underlying skin disease, such as pre-existing eczematous dermatitis, with clinical evidence of secondary infection; Suspected or confirmed osteomyelitis; Suspected or confirmed septic arthritis; Uncomplicated ABSSSI such as simple abscess, impetiginous lesions, superficial cellulitis, furunculosis, carbunculosis, or folliculitis; Infected abdominal wounds unable to be surgically closed; Necrotizing fasciitis, rapidly necrotizing infections, gangrenous processes, or decubitus ulcer; An existing abscess that cannot be drained or a wound requiring significant surgical intervention that cannot be performed within 48 hours of initiation of study treatment; Skin infection known or suspected to be due to fungal, parasitic or viral pathogens; or known or suspected to be due to anaerobic bacterial pathogens or Pseudomonas aeruginosa (including ecthyma gangrenosum), or other Gram negative pathogens as the contributing pathogen; Skin infections complicated by the presence of prosthetic materials that are not to be removed such as central venous catheters, permanent cardiac pacemaker battery packs, or joint replacement prostheses.
  • The subject has received treatment with a systemic and/or topical antibacterial within 4 days of study entry; EXCEPT for any of following conditions: The subject received a single dose of a short-acting antibacterial (half-life less than 12 hours) drug prior to the first dose of study treatment; The subject has failed a previous ABSSSI regimen (i.e. at least 48 hours of treatment) and has documented lack of microbiological or clinical response to such therapy. A subject enrolled as a failure of a previous antibacterial treatment regimen must EITHER: Show worsening or lack of improvement or worsening in signs and symptoms of infection, including continued or worsening purulence, erythema with or without induration, fluctuation, heat/localized warmth, and pain/tenderness and/or continued or worsening systemic markers of infection OR show microbiological evidence of failure; The subject recently completed a treatment course with an antibacterial drug for an infection other than ABSSSI and the drug does not have antibacterial activity against bacterial pathogens that cause ABSSSI. (Note: topical antiseptics, chorhexidine, and alcohol and soaps for wound care are permitted). For the purposes of these criteria, the information may be obtained via a verbal interview with the subject or from the subject’s medical records; information obtained via a verbal interview must be recorded in the subject’s medical record.
  • The subject has known or suspected severe impairment of renal function, including a calculated creatinine clearance (as calculated using the Cockroft-Gault method) of less than 30 millilitre per minute; requirement for peritoneal dialysis, hemodialysis, or hemofiltration; or oliguria (less than 20 millilitre urine output per hour over 24 hours).
  • The subject has known or suspected chronic neutropenia due to suppression of neutrophil production, or is anticipated to develop neutropenia during the course of the study (ie. new chemotherapy subject), with absolute neutrophil count less than 1000 cells/mm^3 (subjects with neutrophil counts as low as 500 cell/mm^3 are eligible if the reduction is due entirely to the acute infectious process).
  • The subject has been previously enrolled in this study, or has previously been treated with GSK2140944.
  • The subject has participated in a clinical trial and has received an investigational product within 30 days or 5 half-lives, whichever is longer

Trial location(s)

Location
Status
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Location
GSK Investigational Site
Anaheim, California, United States, 92804
Status
Study Complete
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Location
GSK Investigational Site
Brooklyn, New York, United States, 11215
Status
Study Complete
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Location
GSK Investigational Site
Butte, Montana, United States, 59701
Status
Study Complete
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Location
GSK Investigational Site
Carriere, Mississippi, United States, 39426
Status
Study Complete
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Location
GSK Investigational Site
Channelview, Texas, United States, 77530
Status
Study Complete
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Location
GSK Investigational Site
Chula Vista, California, United States, 91942
Status
Study Complete
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Location
GSK Investigational Site
La Mesa, California, United States, 91942
Status
Study Complete
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Location
GSK Investigational Site
Las Vegas, Nevada, United States, 92120
Status
Study Complete
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Location
GSK Investigational Site
Lima, Ohio, United States, 45801
Status
Study Complete
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Location
GSK Investigational Site
Miramar, Florida, United States, 33027
Status
Study Complete
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Location
GSK Investigational Site
Sylmar, California, United States, 91342
Status
Study Complete
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Location
GSK Investigational Site
Toledo, Ohio, United States, 43608
Status
Study Complete
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Location
GSK Investigational Site
West Palm Beach, Florida, United States, 33401
Status
Study Complete
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Study documents

Protocol
Available language(s): English
Download document(s)
Scientific result summary
Available language(s): English
Download document(s)

If you wish to request for full study report, please contact - [email protected]

Results overview

Results posted on ClinicalTrials.gov

Recruitment status
Completed
Actual primary completion date
2015-29-06
Actual study completion date
2015-29-06

Plain language summaries

Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.

Additional information about the trial

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