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Urinary Tract Infection (UTI)Phase 3NCT02728089

Study of Ceftolozane/Tazobactam (MK-7625A) in Japanese Participants With Uncomplicated Pyelonephritis and Complicated Urinary Tract Infection (MK-7625A-014)

A Phase 3 study testing MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g) in people with Urinary Tract Infection (UTI) and Complicated Urinary Tract Infection, run by Merck Sharp & Dohme LLC.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a Phase 3, multi-site, non-randomized, open-label study evaluating the safety and efficacy of MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g) for the treatment of complicated urinary tract infection (cUTI) including pyelonephritis (uncomplicated or complicated pyelonephritis and complicated lower urinary… Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g)
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
115 participants
Where
No sites listed yet
Study dates
14 Apr 2016to 5 Sep 2017
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Japanese males or females who need hospitalization
  • Clinical signs and/or symptoms of urinary tract infection (UTI) at screening visit, either one of the following:
  • Pyelonephritis (uncomplicated or complicated)
  • Complicated lower UTI (cUTI)
  • Has a pretreatment baseline urine culture specimen obtained within 24 hours of start of study drug
  • Requires IV antibacterial therapy for the treatment of the presumed UTI
  • Female participants of child bearing potential must not be pregnant (negative human chorionic gonadotropin test) or breastfeeding and must agree to use adequate contraception for the duration of the study and up to 35 days after the last dose of study drug
  • Male participants must agree to use adequate contraception for the duration of the study and up to 75 days after the last dose of study drug

Who cannot join

  • Has a history of recent or recurrent Gram-positive organism UTI suggesting colonization, or participant with UTI that shows or suspects the presence of a Gram-positive organism only
  • Has a history of any moderate or severe hypersensitivity or allergic reaction to any Beta-lactam antibacterial including cephalosporins, carbapenems and penicillins, or tazobactam
  • Has a concomitant infection at the time of randomization, which requires non-study systemic antibacterial therapy in addition to study drug with the exception of an antibacterial with Gram-positive activity only (vancomycin, linezolid, daptomycin and teicoplanin)
  • Is receiving probenecid
  • Is currently receiving bladder infusions with topical urinary antiseptics or antibacterial agents
  • Has received any amount of potentially therapeutic antibacterial therapy after collection of the pretreatment baseline urine culture and before administration of the first dose of study drug.
Show all 20Show fewer
  • Has received any dose of a potentially therapeutic antibacterial agent for the treatment of the current UTI within 48 hours before the pretreatment baseline urine is obtained
  • Intractable urinary infection at baseline that would require more than 7 days of study drug
  • Has complete, permanent obstruction of the urinary tract.
  • Has confirmed fungal urinary tract infection at time of randomization (with ≥ 10^3 fungal colony forming units /mL)
  • Has permanent indwelling bladder catheter or urinary stent including nephrostomy
  • Has suspected or confirmed perinephric or intrarenal abscess
  • Has suspected or confirmed prostatitis, urethritis, or epididymitis
  • Has ileal loop or known vesico-ureteral reflux
  • Severe impairment of renal function including an estimated CrCl < 30 mL/min, requirement for peritoneal dialysis, hemodialysis or hemofiltration, or oliguria (< 20 mL/hr urine output over 24 hours)
  • Has urinary catheter that is not scheduled to be removed before the end of therapy
  • Has any rapidly progressing disease or immediately life-threatening illness including acute hepatic failure, respiratory failure, and septic shock
  • Has an immunocompromising condition (i.e., AIDS, hematological malignancy, or bone marrow transplantation, or immunosuppressive therapy) or is receiving ≥ 40 mg of prednisone per day administered continuously for > 14 days prior to study start
  • Has participated in any clinical study of an investigational product within 30 days prior to the first dose of study drug
  • Has previously participated in any study of ceftolozane or MK-7625A.

About this study

Official title: A Multicenter, Open-label, Noncomparative, Japanese Phase III Study to Assess the Efficacy and Safety of Ceftolozane/Tazobactam (MK-7625A) in Japanese Patients With Uncomplicated Pyelonephritis and Complicated Urinary Tract Infection

This is a Phase 3, multi-site, non-randomized, open-label study evaluating the safety and efficacy of MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g) for the treatment of complicated urinary tract infection (cUTI) including pyelonephritis (uncomplicated or complicated pyelonephritis and complicated lower urinary tract infection) in Japanese participants. Efficacy will be primarily assessed by microbiological response defined as eradication of the baseline pathogen or pathogens.

Being tested
MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g)
Medical subject headings
Urinary Tract Infections, Pyelonephritis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g)Drug

    MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g) administered as an intravenous (IV) infusion

Study groups in NCT02728089
Study groupRoleWhat they receive
MK-7625AExperimentalMK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g) administered as an intravenous (IV) infusion every 8 hours for 7 days. The dose may be reduced to 750 mg (ceftolozane 500 mg/tazobactam 250 mg) for participants with a creatinine clearance (CrCl) of 30-50 mL/min.
Receives: Drug: MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants With Microbiological Response of Eradication at Test of Cure (TOC)

    The per-pathogen microbiological outcome was determined for each uropathogen isolated at baseline at TOC (14 days post first dose). Microbiological outcome was classified as "eradication", "persistence" or "indeterminate." A successful microbiological response was "eradication" which was defined as urine culture showed all uropathogens found at baseline at ≥10^5 colony-forming unit (CFU)/mL were reduced to <10^4 CFU/mL. If the outcome for any uropathogen was" persistence" (CFU/mL not reduced the result was classified as unsuccessful. Participants with responses reported as "indeterminate" were excluded.

    Measured: Day 14 (14 days post first dose of study drug)

  2. Percentage of Participants Who Report 1 or More Adverse Event (AE)

    An AE was defined as any untoward medical occurrence in a participant which does not necessarily have a causal relationship with the treatment. An AE was any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with use of a medicinal product, regardless of whether or not it was considered related to the medicinal product. The percentage of participants that reported at least 1 AE was summarized.

    Measured: Up to 42 days post first dose of study drug

  3. Percentage of Participants Discontinuing Study Drug Due to an AE

    An AE was defined as any untoward medical occurrence in a participant which does not necessarily have a causal relationship with the treatment. An AE was any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with use of a medicinal product, regardless of whether or not considered related to the medicinal product. The percentage of participants that had study drug discontinued during the study due to an AE was summarized.

    Measured: Up to 7 days after the first dose of study drug

Secondary outcomes (9)
  1. Percentage of Participants With Microbiological Response of Eradication at End Of Therapy (EOT)

    The per-pathogen microbiological outcome was determined for each uropathogen isolated at baseline at EOT (7 days post first dose of study drug). Microbiological outcome was classified as "eradication", "persistence" or "indeterminate." A successful microbiological response was "eradication" which was defined as urine culture showed all uropathogens found at baseline at ≥10^5 colony-forming unit (CFU)/mL were reduced to <10^4 CFU/mL. If the outcome for any uropathogen was" persistence" (CFU/mL not reduced the result was classified as unsuccessful. Participants with responses reported as "indeterminate" were excluded.

    Measured: Day 7 (7 days post first dose of study drug)

  2. Percentage of Participants With Microbiological Response of Eradication at Late Follow-up (LFU)

    The per-pathogen microbiological outcome was determined for each uropathogen isolated at baseline at LFU (42 days post first dose of study drug). Microbiological outcome was classified as "eradication", "persistence" or "indeterminate." A successful microbiological response was "eradication" which was defined as urine culture showed all uropathogens found at baseline at ≥10^5 colony-forming unit (CFU)/mL were reduced to <10^4 CFU/mL. If the outcome for any uropathogen was" persistence" (CFU/mL not reduced the result was classified as unsuccessful. Participants with responses reported as "indeterminate" were excluded.

    Measured: Day 42 (42 days post first dose of study drug)

  3. Percentage of Participants With Clinical Response of Clinical Cure at TOC

    The Investigator classified clinical outcome as "clinical cure", "clinical failure", or "indeterminate". A favorable clinical response is "clinical cure" defined as complete resolution of, marked improvement in (where clinical improvement was defined as a reduction in severity of all baseline signs and symptoms with worsening of none and with no requirement for additional antibiotic therapy after EOT), or return to pre-infection signs and symptoms and no use of additional or nonstudy antimicrobial therapy for the treatment of the current UTI. Outcomes reported as "indeterminate" were excluded. Percentage of participants with clinical response of clinical cure at TOC was summarized

    Measured: Day 14 (14 days post first dose of study drug)

  4. Percentage of Participants With Clinical Response of Clinical Cure at EOT

    The Investigator classified clinical outcome as "clinical cure", "clinical failure", or "indeterminate". A favorable clinical response is "clinical cure" defined as complete resolution of, marked improvement in (where clinical improvement was defined as a reduction in severity of all baseline signs and symptoms with worsening of none and with no requirement for additional antibiotic therapy after EOT), or return to pre-infection signs and symptoms and no use of additional or nonstudy antimicrobial therapy for the treatment of the current UTI. Outcomes reported as "indeterminate" were excluded. Percentage of participants with clinical response of clinical cure at EOT was summarized

    Measured: Day 7 (7 days post first dose of study drug)

  5. Percentage of Participants With Clinical Response of Clinical Cure at LFU

    The Investigator classified clinical outcome as "clinical cure", "clinical failure", or "indeterminate". A favorable clinical response is "clinical cure" defined as complete resolution of, marked improvement in (where clinical improvement was defined as a reduction in severity of all baseline signs and symptoms with worsening of none and with no requirement for additional antibiotic therapy after EOT), or return to pre-infection signs and symptoms and no use of additional or nonstudy antimicrobial therapy for the treatment of the current UTI. Outcomes reported as "indeterminate" were excluded. Percentage of participants with clinical response of clinical cure at LFU was summarized.

    Measured: Day 42 (42 days post first dose of study drug)

  6. Percentage of Participants With a Composite Response of Both Eradication and Clinical Cure at TOC

    The percentage of participants that met requirements for both eradication and clinical cure at TOC was summarized.

    Measured: Day 14 (14 days post first dose of study drug)

  7. Percentage of Participants With Microbiological Response of Eradication, by Pathogen at EOT

    The per-pathogen microbiological outcome was determined for each uropathogen isolated at baseline. Microbiological outcome was classified as "Eradication", "Persistence" or "Indeterminate." A successful microbiological response was "Eradication" which was defined as urine culture showed the specific pathogen found at baseline at ≥10^5 colony-forming unit (CFU)/mL was reduced to <10^4 CFU/mL. If the outcome for any uropathogen was persistence (CFU/mL not reduced the result was classified as a failure. Outcomes reported as "indeterminate" were excluded. The percentage of participants that achieved eradication for each uropathogen at EOT (7 days post first dose of study drug) was summarized.

    Measured: Day 7 (7 days post first dose of study drug)

  8. Percentage of Participants With Microbiological Response of Eradication by Pathogen at TOC

    The per-pathogen microbiological outcome was determined for each uropathogen isolated at baseline. Microbiological outcome was classified as "Eradication", "Persistence" or "Indeterminate." A successful microbiological response was "Eradication" which was defined as urine culture showed the specific pathogen found at baseline at ≥10^5 colony-forming unit (CFU)/mL was reduced to <10^4 CFU/mL. If the outcome for any uropathogen was persistence (CFU/mL not reduced), the result was classified as a failure. Outcomes reported as "indeterminate" were excluded. The percentage of participants that achieved eradication for each uropathogen at TOC (14 days post first dose of study drug) was summarized.

    Measured: Day 14 (14 days post first dose of study drug)

  9. Percentage of Participants With Microbiological Response of Eradication by Pathogen at LFU

    The per-pathogen microbiological outcome was determined for each uropathogen isolated at baseline. Microbiological outcome was classified as "Eradication", "Persistence" or "Indeterminate." A successful microbiological response was "Eradication" which was defined as urine culture showed the specific pathogen found at baseline at ≥10^5 colony-forming unit (CFU)/mL was reduced to <10^4 CFU/mL. If the outcome for any uropathogen was persistence (CFU/mL not reduced the result was classified as a failure. Outcomes reported as "indeterminate" were excluded. The percentage of participants that achieved eradication for each uropathogen LFU (42 days post first dose of study drug) was summarized.

    .

    Measured: Day 42 (42 days post first dose of study drug)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Apr 2016 (estimated)
  2. Study start14 Apr 2016
  3. Primary completion5 Sep 2017
  4. Study completion5 Sep 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
115 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02728089
Sponsor's protocol ID
7625A-014
Other IDs
MK-7625A-014, 163276
Status last verified
Jan 2019
First submitted
30 Mar 2016
Last updated
5 Feb 2019
Data monitoring committee
No
Individual data sharing
Yes: http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Publications

  • Arakawa S, Kawahara K, Kawahara M, Yasuda M, Fujimoto G, Sato A, Yokokawa R, Yoshinari T, Rhee EG, Aoyama N. The efficacy and safety of tazobactam/ceftolozane in Japanese patients with uncomplicated pyelonephritis and complicated urinary tract infection. J Infect Chemother. 2019 Feb;25(2):104-110. doi: 10.1016/j.jiac.2018.10.009. Epub 2018 Nov 9.

    PubMed 30420153

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing MK-7625A 1.5 g (ceftolozane 1 g/tazobactam 0.5 g) in people with Urinary Tract Infection (UTI) and Complicated Urinary Tract Infection, run by Merck Sharp & Dohme LLC.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 5 Feb 2019. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 19 Sep 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants With Microbiological Response of Eradication at Test of Cure (TOC) (time frame: Day 14 (14 days post first dose of study drug)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02728089, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Feb 2019.

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