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CompletedNCT03931538RapIDMixARUpdated Aug 28, 2023

Rapid Molecular Organism Identification and Mixed Flora Antibiotic Resistance Profiling (MixAR) Prospective Study

An interventional study of Guidance 4.0 PCR test and Urine Culture in Urinary Tract Infections, Prostatitis and Interstitial Cystitis, sponsored by Pathnostics. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-08-28.

Sponsored by Pathnostics · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Registered 9 months after the study started (first participant enrolled Jul 2018, registered Apr 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
2,511
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

In this protocol, investigators are examining the ability for a novel multiplex PCR assay with mixed floral antibiotic resistance profiling is safe and increases effective treatment for urinary tract infections in a urology clinic over traditional culture methods alone and decreases retreatment rates in this population.

Read the detailed description

The novel multiplex real-time PCR assay with mixed floral antibiotic resistance profiling offers a higher degree of sensitivity and specificity than conventional culture methods in the identification of UTI pathogens as determined by the previous prospective comparison study. Additionally, conventional methods are often inadequate in the case of polymicrobial infections. More accurate and timely pathogen identification allows for prompt and more targeted treatment with less reliance on empiric therapy and decreased rates of antibiotic therapy changes and retreatment. This leads to more favorable patient outcomes and decreases the development of resistant organisms.

02

Conditions studied

  • Urinary Tract Infections
  • Prostatitis
  • Interstitial Cystitis

Keywords

  • UTI
  • IC
03

In context

Urinary Tract Infections

803 studies on the registry are indexed under Urinary Tract Infections; 133 are open to participants now.

This study's enrollment of 2,511 is above the median of 131 across 560 interventional studies indexed under Urinary Tract Infections.

Browse Urinary Tract Infections studies →

Lead sponsor

Pathnostics is the lead sponsor of 7 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

    • Patient form completed

      • Male and Female Subjects may participate with no predetermined quotas or ratios for gender participation.
      • All patients must be ≥60 years old. For patients presenting with a diagnosis of interstitial cystitis, patients may be of any age.
      • Patients must be presenting for treatment of acute UTI, complicated UTI, persistent UTI, or recurrent UTI's.
      • Including prostatitis, pyelonephritis, and/or interstitial cystitis.
      • Data pertaining to the times at which the specimen samples are collected and stabilized needs to be documented.
      • Specimen samples obtained need to have a sufficient volume necessary to perform a urine culture and Guidance 4.0.

Exclusion criteria

Exclusion Criteria:

    • Do not provide written with HIPAA authorization form.

      • Taking antibiotics for any reason other than UTI at the time of enrollment
      • Patients with chronic (> 10 days) indwelling catheters
      • Self-catheterized patients
      • Patients with neobladders
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Factorial assignment
Masking
Single (Care provider)
Enrollment
2,511 participants (actual)

Study arms

  • Active comparator
    Culture Only

    Physician receives only culture result

    Diagnostic Test: Urine Culture

  • Active comparator
    Guidance 4.0 PCR test only

    Physician receives Guidance report only

    Diagnostic Test: Guidance 4.0 PCR test

  • Active comparator
    Culture and Guidance 4.0 PCR test Group

    Physician receives both results, gets Culture report immediately before Guidance

    Diagnostic Test: Guidance 4.0 PCR test · Diagnostic Test: Urine Culture

  • Active comparator
    Guidance 4.0 PCR test and culture group

    Physician receives both results, gets Guidance report immediately before culture

    Diagnostic Test: Guidance 4.0 PCR test · Diagnostic Test: Urine Culture

Interventions

  • Diagnostic testGuidance 4.0 PCR test

    All patients will have a urine culture and Guidance 4.0 PCR test run on their urine, but physicians will receive one or the other, or both depending on the treatment arm.

  • Diagnostic testUrine Culture

    All patients will have a urine culture and Guidance 4.0 PCR test run on their urine, but physicians will receive one or the other, or both depending on the treatment arm.

06

What researchers measure

Primary outcomes

  1. Establish Safety: composite adverse event rate

    Demonstrate safety of Guidance 4.0 multiplex real-time PCR organism identification with mixed floral antibiotic resistance profiling guided treatment. Safety will be measured with a composite adverse event outcome of urosepsis, pyelonephritis, hospitalization, or the need to attend an urgent care center. The composite adverse event rate in the arm tested with Guidance 4.0 will be shown to be non-inferior to that in the arm tested with traditional urine culture. Superiority will also be tested.

    Time frame: 7 Days

Secondary outcomes

  1. Number of Patients with Recurrent and Persistent Infections in Each Arm

    Demonstrate non-inferiority and possibly superiority of Guidance 4.0 over traditional urine C\&S with respect to the percentage of recurrent and persistent infections. Persistent is remaining infection at day 7 and recurrent infection is a person that had a second infection within 30 days that was treated with antibiotics.

    Time frame: 7 Days

  2. Time to Symptom Resolution in Each Arm

    Demonstrate superiority of Guidance 4.0 over traditional urine C\&S with respect to the time to symptom resolution as demonstrated by UTISA tool. Symptom resolution will be defined as an overall rating of no symptoms on the UTISA questionnaire.

    Time frame: 7 days

Other outcomes

  1. Physician Choice for Decision Making when Provided Both Results

    • To determine which test physicians, rely upon when given the results of both traditional urine C\&S vs. Guidance 4.0.

    Time frame: 4 Months

07

Study locations

1 site
  • Comprehensive Urology
    Royal Oak, Michigan 48037, United States
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jul 2018 to primary completion in Feb 2019, 7 months.

Of 153 interventional studies with no phase under Urinary Tract Infections, half reached primary completion within 22 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 37. This study's 7 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 25, 2019
First posted
Apr 30, 2019
StartActual
Jul 17, 2018
Primary completionActual
Feb 22, 2019
CompletionActual
Oct 1, 2019
Last update
Aug 28, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 28, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03931538
Lead sponsor
Pathnostics
Collaborators
Comprehensive Urology-a Division of Michigan Healthcare Professionals
Responsible party
Sponsor
First posted
Apr 30, 2019
Start date
Jul 17, 2018
Primary completion
Feb 22, 2019
Completion
Oct 1, 2019
Last update
Aug 28, 2023

Study contacts

Kirk Wojno, MD
principal investigator · Comprehensive Urology

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2023. You cannot join it, but the record below documents what was studied.

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