ClinicalTrials.gg
CompletedNCT03434275Updated May 25, 2023Results posted

Evaluation of Preoperative N1539 in Total Knee Arthroplasty

A Phase 3 interventional study of N1539 and Placebo in Pain, Postoperative, sponsored by Baudax Bio. Completed at 6 sites in United States. Open to participants aged 35 Years to 80 Years. Per ClinicalTrials.gov, last updated 2023-05-25.

Sponsored by Baudax Bio · Phase 3, Interventional, and Treatment

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Phase
Phase 3
Study type
Interventional
Enrollment
194
Allocation
Randomized
Ages
35 Years to 80 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 24 studies testing meloxicam in Pain, Postoperative — 2 open to participants now, 3 under way, none of them phase 3. Meloxicam · Pain, Postoperative.

Enrollment
11th of 24
194 · median 112
Started
2018
with 2 others
Phase 3
9 of 24
none open now
Registered
11th of 24
by date
Lead sponsor
7 of 24
Baudax Bio

Among the 24 studies testing meloxicam in Pain, Postoperative, this one is the 11th largest by enrollment, is one of 3 that started in 2018, is one of 9 in phase 3, and was the 11th registered.

Pain, Postoperative

5,644 studies on the registry are indexed under Pain, Postoperative; 1,229 are open to participants now.

Browse Pain, Postoperative studies →

Open to participants now

2 of the 24 studies testing meloxicam in Pain, Postoperative are open now, in 2 countries. Recruiting first, the newest first:

By country, each count listing its studies:

All 2 open studies →

About meloxicam

Meloxicam: first FDA approval 2000 (MOBIC), first EMA approval 2020. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 678 Pain, Postoperative studies recruiting now, 241 (36%) set no upper age limit and 328 (48%) stop at 75 or younger; 74 take children under 18; 128 take healthy volunteers.

This study: 35 Years to 80 Years · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 24 studies testing meloxicam in Pain, Postoperative, or all of them as a file.
02

Study summary

The primary objective of this study is to assess the effect of preoperative administration of N1539 on opioid consumption in subjects undergoing open unilateral total knee arthroplasty compared to placebo.

03

Conditions studied

  • Pain, Postoperative

Keywords

  • Total Knee Arthroplasty
  • Pain
  • Analgesia
  • N1539
  • Phase 3b
  • Knee Replacement
04

Who can participate

Ages eligible
35 Years to 80 Years
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

  • Voluntarily provide written .
  • Be planned to undergo an elective, primary (no repeat arthroplasties) open unilateral total knee arthroplasty (TKA), and be expected to require IV analgesia, remain in an inpatient setting for ≥24 hours, and receive at least two doses of study drug.
  • category 1, 2, or 3.
  • Female subjects not pregnant or planning/attempting to become pregnant, not lactating; or commits to the use of an acceptable form of for the duration of the study.
  • Have a \<40 kg/m\^2

Exclusion criteria

Exclusion Criteria:

  • Have a known allergy or to any study treatment.
  • Have a history of previous TKA.
  • Has plans for a concurrent surgical procedure (eg, bilateral TKA).
  • Has TKA planned to be performed under general anesthesia.
  • Have a history of myocardial infarction within the preceding 12 months.
  • Have, as determined by the investigator or the sponsor's medical monitor, a history or clinical manifestations of significant condition that would preclude participation.
  • Have active or recent (within 6 months) gastrointestinal ulceration or bleeding.
  • Have a known bleeding disorder which may be worsened with the administration of an NSAID.
  • Be currently receiving treatment with oral meloxicam (Mobic®) or another NSAID within 48 hours prior to surgery.
  • Have previously received N1539/IV meloxicam or received any product within 30 days before dosing with study medication.
  • Have undergone or be expected to undergo radiation therapy, chemotherapy, or other biological therapy for cancer treatment, within 60 days prior to screening through last follow-up.
Terms in these criteria, in plain language(6)

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.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
194 participants (actual)

Study arms

  • Experimental
    N1539 30 mg

    N1539 (meloxicam injection for IV use) 30 mg every 24 hours

    Drug: N1539

  • Placebo comparator
    IV Placebo

    IV Placebo every 24 hours

    Drug: Placebo

Interventions

  • DrugN1539

    Once Daily

    Also known as: Intravenous meloxicam

  • DrugPlacebo

    Once Daily

    Also known as: Intravenous placebo

06

What researchers measure

Primary outcomes

  1. Opioid Use Hour 0-24

    Total use of opioid analgesia, in IV morphine equivalent dose, from Hour 0 through 24.

    Time frame: Up to 24 Hours

07

Results

Posted May 25, 2023

Participant flow

Participant flow — Overall Study
MilestoneN1539 30 mgIV Placebo
Started9896
Treated9388
Completed9388
Not completed58

Outcome measures

PrimaryOpioid Use Hour 0-24

Total use of opioid analgesia, in IV morphine equivalent dose, from Hour 0 through 24.

Time frame:
Up to 24 Hours
Reported as:
Least squares mean · mg morphine equivalent
Opioid Use Hour 0-24
mg morphine equivalentN1539 30 mgIV Placebo
Opioid Use Hour 0-2418.94 ± 1.32027.73 ± 1.371

Adverse events

Collected over Through 30 days post dose. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
N1539 30 mg0/93 (0%)3/93 (3.2%)65/93 (69.9%)
IV Placebo0/88 (0%)9/88 (10.2%)81/88 (92%)
Most frequent serious events
Showing 10 of 13
Most frequent serious events
EventN1539 30 mgIV Placebo
Pulmonary embolismRespiratory, thoracic and mediastinal disorders0/932/88
Atrial fibrillationCardiac disorders0/931/88
Cardiac failure congestiveCardiac disorders0/931/88
Oesophageal stenosisGastrointestinal disorders0/931/88
CellulitisInfections and infestations0/931/88
HyponatraemiaMetabolism and nutrition disorders0/931/88
Transient ischaemic attackNervous system disorders0/931/88
Acute kidney injuryRenal and urinary disorders0/931/88
Deep vein thrombosisVascular disorders0/931/88
HypertensionVascular disorders0/931/88
Most frequent other events
Most frequent other events
EventN1539 30 mgIV Placebo
NauseaGastrointestinal disorders37/9352/88
VomitingGastrointestinal disorders15/9319/88
PruritusSkin and subcutaneous tissue disorders14/9310/88
HypotensionCardiac disorders13/9313/88
ConstipationGastrointestinal disorders10/9311/88
HypertensionVascular disorders0/937/88
PyrexiaInvestigations7/935/88
HypokalemiaInvestigations2/936/88
DizzinessNervous system disorders6/935/88
HeadacheNervous system disorders1/935/88

Baseline characteristics

Safety Population - Subjects who received at least 1 study dose

Age, Continuous
Age, Continuous(years)N1539 30 mgIV PlaceboTotal
Mean66.9 ± 8.2365.5 ± 8.1166.2 ± 8.18
Sex: Female, Male
Sex: Female, Male(Participants)N1539 30 mgIV PlaceboTotal
Female5451105
Male393776
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)N1539 30 mgIV PlaceboTotal
Hispanic or Latino9918
Not Hispanic or Latino8479163
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)N1539 30 mgIV PlaceboTotal
American Indian or Alaska Native000
Asian112
Native Hawaiian or Other Pacific Islander000
Black or African American181735
White7470144
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)N1539 30 mgIV PlaceboTotal
United States9388181
08

Study locations

6 sites
  • Research Center
    Florence, Alabama 35630, United States
  • Research Center
    Mobile, Alabama 36608, United States
  • Research Center
    Sheffield, Alabama 35660, United States
  • Research Center
    Tempe, Arizona 85284, United States
  • Research Center
    Tamarac, Florida 33321, United States
  • Research Center
    Vero Beach, Florida 32960, United States
09

References and documents

Publications

  • Berkowitz RD, Steinfeld R, Sah AP, Mack RJ, McCallum SW, Du W, Black LK, Freyer A, Coyle E. Safety and Efficacy of Perioperative Intravenous Meloxicam for Moderate-to-Severe Pain Management in Total Knee Arthroplasty: A Randomized Clinical Trial. Pain Med. 2021 Jun 4;22(6):1261-1271. doi: 10.1093/pm/pnab016. PubMed 33502533 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

10

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 Feb 2018 to primary completion in May 2019, 15 months.

Results were first posted in May 2023, 4 years after primary completion.

Of 43 industry-sponsored phase 3 interventional studies under Pain, Postoperative, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 19. This study's 15 months is above that.

Counting every sponsor, half of 166 studies reached it within 17 months; a quarter within 8 and three quarters within 30.

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

Registered
Feb 9, 2018
First posted
Feb 15, 2018
StartActual
Feb 19, 2018
Primary completionActual
May 21, 2019
CompletionActual
May 21, 2019
Results first posted
May 25, 2023
Last update
May 25, 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 May 25, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03434275
Lead sponsor
Baudax Bio
Responsible party
Sponsor
First posted
Feb 15, 2018
Start date
Feb 19, 2018
Primary completion
May 21, 2019
Completion
May 21, 2019
Results posted
May 25, 2023
Last update
May 25, 2023

Oversight

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

Not currently enrolling

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

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Studies of the drug tested here: Meloxicam

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