Clinical Trial Results:
A Phase 3, Randomized, Multicenter, Double-Blind Study to Evaluate the Efficacy and Safety of Plazomicin Compared with Meropenem followed by Optional Oral Therapy for the Treatment of Complicated Urinary Tract Infection (cUTI), including Acute Pyelonephritis (AP), in Adults
Summary
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EudraCT number |
2015-001588-37 |
Trial protocol |
EE LV CZ BG PL ES DE HU |
Global end of trial date |
22 Sep 2016
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Results information
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Results version number |
v1(current) |
This version publication date |
14 Oct 2017
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First version publication date |
14 Oct 2017
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
ACHN-490-009
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02486627 | ||
WHO universal trial number (UTN) |
U1111-1171-1554 | ||
Sponsors
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Sponsor organisation name |
Achaogen Inc.
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Sponsor organisation address |
1 Tower Pl #300,, South San Francisco, United States, 94080
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Public contact |
Clinical Trials Registration Group, Achaogen, Inc., clinical-trials@achaogen.com
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Scientific contact |
Clinical Trials Registration Group, Achaogen, Inc., clinical-trials@achaogen.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
22 Sep 2016
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Is this the analysis of the primary completion data? |
No
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Global end of trial reached? |
Yes
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Global end of trial date |
22 Sep 2016
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
The primary objective of this study was to demonstrate the non-inferiority (NI) of plazomicin compared with meropenem based on the difference in composite microbiological eradication and clinical cure rate.
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Protection of trial subjects |
This study was conducted in accordance with the US Food and Drug Administration (FDA) regulations, the International Council on Harmonisation (ICH) E6 Guidelines for Good Clinical Practice (GCP), the Declaration of Helsinki (October 1996), and applicable local, state, national laws. For European Union member states, this included Directive 2001/20/EC, Directive 2005/28/EC, and other directives as applicable as well as applicable local and national laws.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
11 Jan 2016
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Long term follow-up planned |
Yes
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Long term follow-up rationale |
Safety, Efficacy | ||
Long term follow-up duration |
1 Months | ||
Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Poland: 55
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Country: Number of subjects enrolled |
Romania: 73
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Country: Number of subjects enrolled |
Spain: 1
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Country: Number of subjects enrolled |
Bulgaria: 80
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Country: Number of subjects enrolled |
Czech Republic: 3
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Country: Number of subjects enrolled |
Estonia: 51
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Country: Number of subjects enrolled |
Hungary: 29
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Country: Number of subjects enrolled |
Latvia: 57
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Country: Number of subjects enrolled |
Georgia: 81
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Country: Number of subjects enrolled |
Mexico: 2
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Country: Number of subjects enrolled |
Russian Federation: 79
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Country: Number of subjects enrolled |
Serbia: 23
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Country: Number of subjects enrolled |
Ukraine: 72
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Country: Number of subjects enrolled |
United States: 3
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Worldwide total number of subjects |
609
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EEA total number of subjects |
349
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
326
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From 65 to 84 years |
271
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85 years and over |
12
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Recruitment
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Recruitment details |
- | |||||||||||||||||||||||||||
Pre-assignment
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Screening details |
A total of 640 subjects were screened and 609 were randomized. | |||||||||||||||||||||||||||
Period 1
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Period 1 title |
Overall Trial (overall period)
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Is this the baseline period? |
Yes | |||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | |||||||||||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Carer, Assessor | |||||||||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Plazomicin | |||||||||||||||||||||||||||
Arm description |
Subjects received up to 15 milligrams per kilogram (mg/kg) plazomicin as an intravenous (IV) infusion once daily followed by matching placebo infusions 8 and 16 hours later. After a minimum of 4 days of IV plazomicin, subjects could switch to 250 or 500 mg oral levofloxacin for a total duration of 7 to 10 days (IV plus oral). | |||||||||||||||||||||||||||
Arm type |
Experimental | |||||||||||||||||||||||||||
Investigational medicinal product name |
Plazomicin
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
15 mg/kg as a 30 minute (plus or minus 10 minutes) intravenous (IV) infusion once daily. Dose adjustments, including adjustment of dosing schedule, were required based on renal function.
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Investigational medicinal product name |
Levofloxacin
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
250 or 500 mg once daily depending on renal function to complete a total of 7 to 10 days of IV plus oral therapy
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Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Saline placebo administered as a 30 minute (plus or minus 10 minutes) intravenous (IV) infusion 8 and 16 hours post plazomicin infusion. Dose adjustments, including adjustment of dosing schedule, were required based on renal function.
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Arm title
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Meropenem | |||||||||||||||||||||||||||
Arm description |
Subjects received 1.0 g meropenem as an intravenous (IV) infusion every 8 hours (q8h). After a minimum of 4 days of IV meropenem, subjects could switch to 250 or 500 mg oral levofloxacin for a total duration of 7 to 10 days (IV plus oral). | |||||||||||||||||||||||||||
Arm type |
Active comparator | |||||||||||||||||||||||||||
Investigational medicinal product name |
Meropenem
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Powder for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
1.0 g as a 30 minute (plus or minus 10 minutes) intravenous (IV) infusion every 8 hours (q8h). Dosing schedule adjustments were required based on renal function.
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Investigational medicinal product name |
Levofloxacin
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
250 or 500 mg once daily depending on renal function to complete a total of 7 to 10 days of IV plus oral therapy
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Baseline characteristics reporting groups
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Reporting group title |
Plazomicin
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Reporting group description |
Subjects received up to 15 milligrams per kilogram (mg/kg) plazomicin as an intravenous (IV) infusion once daily followed by matching placebo infusions 8 and 16 hours later. After a minimum of 4 days of IV plazomicin, subjects could switch to 250 or 500 mg oral levofloxacin for a total duration of 7 to 10 days (IV plus oral). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Meropenem
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Reporting group description |
Subjects received 1.0 g meropenem as an intravenous (IV) infusion every 8 hours (q8h). After a minimum of 4 days of IV meropenem, subjects could switch to 250 or 500 mg oral levofloxacin for a total duration of 7 to 10 days (IV plus oral). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Plazomicin
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Reporting group description |
Subjects received up to 15 milligrams per kilogram (mg/kg) plazomicin as an intravenous (IV) infusion once daily followed by matching placebo infusions 8 and 16 hours later. After a minimum of 4 days of IV plazomicin, subjects could switch to 250 or 500 mg oral levofloxacin for a total duration of 7 to 10 days (IV plus oral). | ||
Reporting group title |
Meropenem
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Reporting group description |
Subjects received 1.0 g meropenem as an intravenous (IV) infusion every 8 hours (q8h). After a minimum of 4 days of IV meropenem, subjects could switch to 250 or 500 mg oral levofloxacin for a total duration of 7 to 10 days (IV plus oral). |
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End point title |
Percentage of Subjects with a Composite Microbiological Eradication and Clinical Cure in the Microbiological Modified Intent to Treat (mMITT) Population at Day 5 | |||||||||||||||||||||
End point description |
Microbiological eradication was defined as a urine culture that showed the pathogen found at baseline at >=10^5 colony forming units per milliliter (CFU/mL) was reduced to <10^4 CFU/mL. Clinical Cure at Day 5: marked improvement evidenced by complete resolution or return to premorbid levels or reduction in severity of all core baseline symptoms with worsening of none, and no new symptoms developed. Failure: Lack of improvement in core baseline symptoms of complicated urinary tract infection (cUTI) or development of new core symptoms of cUTI; AE requiring the discontinuation of study drug and the patient required alternative non-study antibiotic therapy for the current cUTI. Indeterminate: Insufficient data are available to allow an evaluation of clinical outcome for any reason. The mMTT population subjects received any amount of study drug, had one qualified baseline pathogen where meropenem and plazomicin have antibacterial activity, and no pathogens where they do not have activity.
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End point type |
Primary
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End point timeframe |
Day 5
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Statistical analysis title |
Plazomicin vs Meropenem | |||||||||||||||||||||
Statistical analysis description |
95% CIs for the difference in cure rates were calculated using the Newcombe method with continuity correction.
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Comparison groups |
Plazomicin v Meropenem
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Number of subjects included in analysis |
388
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority | |||||||||||||||||||||
Method |
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Parameter type |
Difference | |||||||||||||||||||||
Point estimate |
-3.4
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Confidence interval |
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level |
95% | |||||||||||||||||||||
sides |
2-sided
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lower limit |
-10 | |||||||||||||||||||||
upper limit |
3.1 |
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End point title |
Percentage of Subjects with a Composite Microbiological Eradication and Clinical Cure in the Microbiological Modified Intent to Treat (mMITT) Population at Test of Cure (TOC) | |||||||||||||||||||||
End point description |
Microbiological eradication was defined as a urine culture that showed the pathogen found at baseline at >=10^5 colony forming units per milliliter (CFU/mL) was reduced to <10^4 CFU/mL. Clinical Cure at TOC Visit: the complete resolution or return to premorbid levels of core symptoms of cUTI and no new symptoms develop, and no use of non-study antibiotic therapy for the current cUTI. Failure: Persistence of one or more core symptom of infection or reappearance of or development of new core symptoms that require alternative non-study antibiotic therapy for the current cUTI. Indeterminate: Insufficient data are available to allow an evaluation of clinical outcome for any reason. The mMTT population subjects received any amount of study drug, had one qualified baseline pathogen where meropenem and plazomicin have antibacterial activity, and no pathogens where they do not have activity.
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End point type |
Primary
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End point timeframe |
Day 17 TOC Visit
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Statistical analysis title |
Plazomicin vs Meropenem | |||||||||||||||||||||
Statistical analysis description |
95% CIs for the difference in cure rates were calculated using the Newcombe method with continuity correction.
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Comparison groups |
Meropenem v Plazomicin
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Number of subjects included in analysis |
388
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority | |||||||||||||||||||||
Method |
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Parameter type |
Difference | |||||||||||||||||||||
Point estimate |
11.6
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Confidence interval |
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level |
95% | |||||||||||||||||||||
sides |
2-sided
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lower limit |
2.7 | |||||||||||||||||||||
upper limit |
20.3 |
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End point title |
Percentage of Subjects with a Composite Microbiological Eradication and Clinical Cure in the Microbiologically Evaluable (ME) Population at Day 5 | ||||||||||||||||||
End point description |
Microbiological eradication: urine culture showed the pathogen found at baseline at >=10^5 colony forming units per milliliter (CFU/mL) was reduced to <10^4 CFU/mL. Clinical Cure Day 5: Marked improvement defined as complete resolution or return to premorbid levels or reduction in severity of all core baseline symptoms with worsening of none, and no new symptoms develop. Failure Day 5: Lack of improvement in core baseline symptoms of cUTI or development of new core symptoms of cUTI; AE requiring the discontinuation of study drug and the subject required alternative non-study antibiotic therapy for the current cUTI. ME population: clinically evaluable subjects with interpretable culture results, defined as one that has clearly identified pathogen(s) or one where baseline pathogen(s) could be excluded.
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End point type |
Secondary
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End point timeframe |
Day 5
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects with a Composite Microbiological Eradication and Clinical Cure in the Microbiologically Evaluable (ME) Population at Test of Cure (TOC) | ||||||||||||||||||
End point description |
Microbiological eradication: urine culture showed the pathogen found at baseline at >=10^5 colony forming units per milliliter (CFU/mL) was reduced to <10^4 CFU/mL. Clinical Cure TOC: Complete resolution or return to premorbid levels of core symptoms of cUTI and no new symptoms develop, and no use of non-study antibiotic therapy for the current cUTI. Failure TOC: Persistence of one or more core symptom of infection or reappearance of or development of new core symptoms that require alternative non-study antibiotic therapy for the current cUTI.
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End point type |
Secondary
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End point timeframe |
Day 17 TOC Visit
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects with Adverse Events (AEs) | ||||||||||||
End point description |
An AE is any untoward medical occurrence associated with the use of a drug in humans, whether or not it is considered to be drug related. An AE (also referred to as an adverse experience) can be any unfavorable and unintended sign (eg, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, and it does not imply any judgment about causality. Adverse events also include the exacerbation or worsening of a condition present at screening other than the index infection for which the subject was enrolled in the study. The safety population included all randomised subjects who received any amount of study drug.
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End point type |
Secondary
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End point timeframe |
Up to Day 32
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No statistical analyses for this end point |
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End point title |
Plasma Pharmacokinetics (PK): Area Under the Curve from 0 to 24 Hours (AUC 0–24h) [1] | ||||||||
End point description |
PK blood samples were collected on Day 3 (plus or minus 1 day) of study drug administration for the determination of plazomicin concentrations in plazomicin-treated patients. The PK Population included subjects who received at least one dose of plazomicin and had at least one quantifiable plazomicin plasma concentration available for analysis.
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End point type |
Secondary
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End point timeframe |
Day 3
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Notes [1] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Although it is generally expected that results for primary and secondary endpoints will be presented for all arms included at baseline, results for the meropenem arm are not presented here as PK sample collection does not apply to and was not collected for subjects in the meropenem arm, as only plazomicin levels were measured. |
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No statistical analyses for this end point |
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End point title |
Plasma Pharmacokinetics (PK): Maximum Observed Plasma Drug Concentration (Cmax) [2] | ||||||||
End point description |
PK blood samples were collected on Day 3 (plus or minus 1 day) of study drug administration for the determination of plazomicin concentrations in plazomicin-treated patients. The PK Population included subjects who received at least one dose of plazomicin and had at least one quantifiable plazomicin plasma concentration available for analysis.
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End point type |
Secondary
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End point timeframe |
Day 3
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Notes [2] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Although it is generally expected that results for primary and secondary endpoints will be presented for all arms included at baseline, results for the meropenem arm are not presented here as PK sample collection does not apply to and was not collected for subjects in the meropenem arm, as only plazomicin levels were measured. |
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No statistical analyses for this end point |
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End point title |
Plasma Pharmacokinetics (PK): Minimum Observed Plasma Drug Concentration (Cmin) [3] | ||||||||
End point description |
PK blood samples were collected on Day 3 (plus or minus 1 day) of study drug administration for the determination of plazomicin concentrations in plazomicin-treated patients. The PK Population included subjects who received at least one dose of plazomicin and had at least one quantifiable plazomicin plasma concentration available for analysis.
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End point type |
Secondary
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End point timeframe |
Day 3
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Notes [3] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Although it is generally expected that results for primary and secondary endpoints will be presented for all arms included at baseline, results for the meropenem arm are not presented here as PK sample collection does not apply to and was not collected for subjects in the meropenem arm, as only plazomicin levels were measured. |
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No statistical analyses for this end point |
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Adverse events information [1]
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Timeframe for reporting adverse events |
Up to Day 32
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Adverse event reporting additional description |
The AE collection period began with the first dose of study drug and ended at the last follow up visit (LFU). LFU was up to 32 Days after the first dose of study drug.
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
19.0
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Reporting groups
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Reporting group title |
Plazomicin
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Reporting group description |
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Reporting group title |
Meropenem
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Reporting group description |
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Notes [1] - There are no non-serious adverse events recorded for these results. It is expected that there will be at least one non-serious adverse event reported. Justification: There were no non-serious treatment-emergent adverse events in >=5% of patients in any treatment group. |
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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04 Dec 2015 |
The protocol ACHN-490-009 was amended to allow for the inclusion of subjects with moderate renal impairment, defined as a creatinine clearance (CLcr) of >30 to <=60 mL/min as estimated by the Cockcroft-Gault equation.
Additional modifications to the protocol were made to better clarify the intent of the existing language in the original protocol. |
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |