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CompletedNCT03033329Updated Mar 22, 2018

Single Dose Escalation and Multiple Dose Escalation Trial of an Intravenous Formulation of MRX-4

A Phase 1 interventional study of Single intravenous doses of MRX-4 and Single intravenous doses of placebo in Safety, sponsored by MicuRx. Completed. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-03-22.

Sponsored by MicuRx · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Oct 2016, registered Jan 2017).
Phase
Phase 1
Study type
Interventional
Enrollment
90
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
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Study summary

A Phase 1 study of the safety, tolerability, and pharmacokinetics of a new oxazolidinone antibiotic. In Part 1 cohorts of healthy adults will participate in a single dose escalation study of increasing intravenous doses of MRX-4. In Part 2 cohorts of healthy adults will participate in a multiple dose escalation study of increasing intravenous doses of MRX-4 given twice daily for ten days. Part 3 is a crossover study of oral MRX-4 versus a comparable intravenous dose of MRX-4 to determine bioavailability.

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Conditions studied

  • Safety
03

In context

Lead sponsor

MicuRx is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

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

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Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy subjects

Exclusion criteria

Exclusion Criteria:

  • Underlying hepatic, renal, metabolic, hematologic, cardiovascular, or immunologic disorder
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
90 participants (actual)

Study arms

  • Experimental
    Single intravenous doses of MRX-4

    Single escalating intravenous doses of MRX-4 from 150 mg to 1800 mg

    Drug: Single intravenous doses of MRX-4

  • Placebo comparator
    Single intravenous doses of placebo

    Single intravenous doses of placebo to match MRX-4

    Drug: Single intravenous doses of placebo

  • Active comparator
    Multiple intravenous doses of MRX-4

    Twice daily escalating intravenous doses of MRX-4 for 10 days: 600 mg, 900 mg, 1200 mg, and 1500 mg

    Drug: Multiple intravenous doses of MRX-4

  • Placebo comparator
    Multiple intravenous doses of placebo

    Twice daily intravenous doses of placebo to match MRX-4 for 10 days

    Drug: Multiple intravenous doses of placebo

  • Active comparator
    Single dose of intravenous and oral MRX-4

    Crossover of single dose of intravenous and oral MRX-4

    Drug: Single dose of intravenous and oral MRX-4

Interventions

  • DrugSingle intravenous doses of MRX-4

    Intravenous single escalating doses of MRX-4

  • DrugSingle intravenous doses of placebo

    Intravenous single doses of placebo to match MRX-4

  • DrugMultiple intravenous doses of MRX-4

    Multiple ascending doses of MRX-4 given intravenously twice daily for 10 days

  • DrugMultiple intravenous doses of placebo

    Multiple doses of placebo to match MRX-4 given intravenously twice daily for 10 days

  • DrugSingle dose of intravenous and oral MRX-4

    Crossover single dose of intravenous and oral MRX-4 given on Day 1 and Day 4

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What researchers measure

Primary outcomes

  1. Safety of single and multiple ascending doses of MRX-4

    Summary statistics of the number of subjects with changes in vital signs, physical examinations, clinical lab data, ecg parameters, and adverse events

    Time frame: Screening through end of study visit on Day 7 (Part 1), Day 17 (Part II) and Day 15 (Part III)

Secondary outcomes

  1. Plasma concentration time data for MRX-4 and its metabolites

    Individual and mean plasma concentration time data for MRX-4 and its metabolites

    Time frame: Pre-dose through 72 hours post dose

  2. Bioavailability of MRX-I and other MRX-4 metabolites

    Levels of MRX-4 and its metabolites in blood

    Time frame: Pre-dose through 72 hours post dose

  3. Comparison of the pharmacokinetics of oral versus intravenous MRX-4 and its metabolites

    Levels of MRX-4 and its metabolites in blood

    Time frame: Pre-dose through 72 hours post dose

  4. Elimination of MRX-4 and its metabolites in the urine following single dose adminstration

    Levels of MRX-4 and its metabolites in urine

    Time frame: Pre-dose through 72 hours post dose

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Study locations

No study locations are listed for this record.

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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 22, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03033329
Lead sponsor
MicuRx
Collaborators
Worldwide Clinical Trials
Responsible party
Sponsor
First posted
Jan 26, 2017
Start date
Oct 2016
Primary completion
Mar 2018
Completion
Mar 2018
Last update
Mar 22, 2018

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2017. You cannot join it, but the record below documents what was studied.

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