ClinicalTrials.gg
CompletedNCT00105534Updated Nov 21, 2013Results posted

Evaluation of Clinical and Microbial Efficacy and Safety of AzaSite Compared to Vehicle for Bacterial Conjunctivitis (C-01-401-003)

A Phase 3 interventional study of AzaSite and Vehicle in Bacterial Conjunctivitis, sponsored by Merck Sharp & Dohme LLC. Completed at 32 sites in United States. Open to participants aged 12 Months and older. Per ClinicalTrials.gov, last updated 2013-11-21.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
685
Allocation
Randomized
Ages
12 Months and older
Sex
All
01

Study summary

The purpose of this study is to evaluate the clinical and microbial efficacy and safety of AzaSite compared to vehicle for bacterial conjunctivitis. Adults and children one year of age and older with bacterial conjunctivitis in at least one eye may be eligible. Subjects will be randomly assigned to receive either 1.0 % AzaSite or Vehicle. Three visits will be required for this study.

02

Conditions studied

  • Bacterial Conjunctivitis

Keywords

  • Bacterial Conjunctivitis
  • Pink Eye
  • Conjunctivitis
  • Eye Infection
  • Eye Discharge
03

In context

Conjunctivitis, Bacterial

40 studies on the registry are indexed under Conjunctivitis, Bacterial; 2 are open to participants now.

This study's enrollment of 685 is above the median of 261 across 36 interventional studies indexed under Conjunctivitis, Bacterial.

Browse Conjunctivitis, Bacterial studies →

Lead sponsor

Merck Sharp & Dohme LLC is the lead sponsor of 2,166 studies on the registry; 132 are open to participants now.

Of its 501 completed or terminated interventional studies of FDA-regulated products, 370 (74%) have results posted.

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

04

Who can participate

Ages eligible
12 Months 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

  • Male or female subject, of any race, who is at least 1 year of age.
  • Subjects must have a clinical diagnosis of acute bacterial conjunctivitis and exhibit mucopurulent or purulent conjunctival discharge (crusty or sticky eyelids, globular and yellow discharge) and redness in at least one eye.
  • The symptoms of bacterial conjunctivitis must be present for 3 days (approximately 72 hours) or less.
  • Must be willing to discontinue contact lens wear for the duration of the study.

Exclusion criteria

Exclusion Criteria:

  • Any uncontrolled, systemic, debilitating disease.
  • Use of topical ophthalmic solutions including tear substitutes within 2 hours before and during the study.
  • Use of any topical ophthalmic anti-inflammatory agents within 48 hours before and during the study.
  • Any active upper respiratory tract infection.
  • Pregnant or nursing females.
  • Use of any antibiotic (topical or systemic) within 72 hours of enrollment
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
685 participants (actual)

Study arms

  • Experimental
    AzaSite

    Drug: AzaSite

  • Sham comparator
    Vehicle

    Other: Vehicle

Interventions

  • 1.0% AzaSite contains 1.0% azithromycin, sodium hydroxide, mannitol, poloxamer 407, citric acid anhydrous, sodium citrate, DuraSite® (polycarbophil, sodium chloride, EDTA disodium and water for injection) and benzalkonium chloride 0.003%. AzaSite was prescribed as a single topical drop to the infected eye(s) for 5 days, twice on the first two days (once in the morning and at bedtime) and once a day in the morning (between 7-10 AM) for the following three days.

  • OtherVehicle

    Vehicle contains sodium hydroxide, mannitol, poloxamer 407, citric acid anhydrous, sodium citrate, DuraSite® (polycarbophil, sodium chloride, EDTA disodium and water for injection) and benzalkonium chloride 0.003%. Vehicle was prescribed as a single topical drop to the infected eye(s) for 5 days, twice on the first two days (once in the morning and at bedtime) and once a day in the morning (between 7-10 AM) for the following three days.

06

What researchers measure

Primary outcomes

  1. Participants Who Achieved Clinical Resolution

    Clinical Resolution is defined as absence of all three clinical signs: ocular discharge, bulbar conjunctival injection, and palpebral conjunctival injection.

    Time frame: Visit 3 (Days 6-7)

Secondary outcomes

  1. Participants Who Achieved Bacteriological Eradication

    Bacterial eradication is defined as the eradication of the causative pathogens as indicated by the absence of growth (0 colony forming units/mL) of the original infecting organism(s).

    Time frame: Visit 3 (Day 6-7)

07

Results

Posted Oct 27, 2011

Participant flow

Participant flow — Overall Study
MilestoneAzaSiteVehicle
Started335350
Completed313317
Not completed2233
Withdrew: Adverse event25
Withdrew: Protocol violation14
Withdrew: Withdrawal by subject66
Withdrew: Lost to follow-up51
Withdrew: Lack of efficacy715
Withdrew: Treatment unmasked10
Withdrew: Other reason02

Outcome measures

PrimaryParticipants Who Achieved Clinical Resolution

Clinical Resolution is defined as absence of all three clinical signs: ocular discharge, bulbar conjunctival injection, and palpebral conjunctival injection.

Time frame:
Visit 3 (Days 6-7)
Reported as:
Number · Participants
Participants Who Achieved Clinical Resolution
ParticipantsAzaSiteVehicle
Participants Who Achieved Clinical Resolution8274
SecondaryParticipants Who Achieved Bacteriological Eradication

Bacterial eradication is defined as the eradication of the causative pathogens as indicated by the absence of growth (0 colony forming units/mL) of the original infecting organism(s).

Time frame:
Visit 3 (Day 6-7)
Reported as:
Number · Participants
Participants Who Achieved Bacteriological Eradication
ParticipantsAzaSiteVehicle
Participants Who Achieved Bacteriological Eradication11599

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
AzaSite—0/333 (0%)0/333 (0%)
Vehicle—2/350 (0.6%)0/350 (0%)
Most frequent serious events
Most frequent serious events
EventAzaSiteVehicle
Cornela UlcerEye disorders0/3331/350
Cerebrovascular AccidentNervous system disorders0/3331/350

Baseline characteristics

Age Continuous
Age Continuous(years)AzaSiteVehicleTotal
Mean25.6 ± 24.4930.8 ± 28.0728.4 ± 26.54
Sex: Female, Male
Sex: Female, Male(Participants)AzaSiteVehicleTotal
Female8278160
Male4871119
08

Study locations

32 sites
  • I Care! Eye Care!
    Flagstaff, Arizona 86001, United States
  • Rx For Life, Inc.
    Cudahy, California 90201, United States
  • North Bay Eye Associates
    Petaluma and Santa Rosa, California 95401, United States
  • San Diego Eye and Laser Center
    San Diego, California 92123, United States
  • Western States Clinical Research
    Wheat Ridge, Colorado 80033, United States
  • Opticare Eye Health Center
    Waterbury, Connecticut 06708, United States
  • International Eye Center
    Tampa, Florida 33603, United States
  • Welborn Clinic and Welborn Clinic East
    Evansville, Indiana 47713, United States
  • Taustine Eye Center
    Louisville, Kentucky 40217, United States
  • Bossier Optical Inc.
    Bossier City, Louisiana 71111, United States
  • Bohn and Joseph Eye Center
    Lafayette, Louisiana 70506, United States
  • The Louisiana Eye Center
    Zachary, Louisiana 70791, United States
  • Mississippi Eye Associates
    Ocean Springs, Mississippi 39564, United States
  • Clinical Research Laboratories
    Piscataway, New Jersey 08854, United States
  • Advanced Eyecare and Laser Center
    Runnemede, New Jersey 08078, United States
  • Precision Eye Care
    Huntington, New York 11743, United States
  • Charlotte Eye, Ear, Nose, and Throat
    Charlotte, North Carolina 28210, United States
  • Horizon Eye Center
    Charlotte, North Carolina 28211, United States
  • Groat Eyecare Associates
    Greensboro, North Carolina 27401, United States
  • Abrams Eye Center
    Cleveland, Ohio 44115, United States
  • Bend Memorial Clinic
    Bend, Oregon 97701, United States
  • University Eye Surgeons
    Maryville, Tennessee 37803, United States
  • Total Eye Care, PA
    Memphis, Tennessee 38119, United States
  • Eye Associates
    Nashville, Tennessee 37203, United States
  • Metaclin Research, Inc.
    Austin, Texas 78704, United States
  • Physicians Eye Associates & Cosmetic Laser
    Houston, Texas 77002, United States
  • Marc Sanders, MD
    Houston, Texas 77030, United States
  • Mark Mayo, MD
    Pasadena, Texas 77504, United States
  • Sun Research Institute
    San Antonio, Texas 78205, United States
  • Mountain View Eye Center
    Layton, Utah 84041, United States
  • Cottonwood Eye and Laser Clinic
    Salt Lake City, Utah 84107, United States
  • Advanced Healthcare, SC
    Milwaukee, Wisconsin 53209, United States
09

References and documents

Publications

  • Abelson MB, Heller W, Shapiro AM, Si E, Hsu P, Bowman LM; AzaSite Clinical Study Group. Clinical cure of bacterial conjunctivitis with azithromycin 1%: vehicle-controlled, double-masked clinical trial. Am J Ophthalmol. 2008 Jun;145(6):959-65. doi: 10.1016/j.ajo.2008.01.019. Epub 2008 Mar 28. PubMed 18374301 ↗

Related links

10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jul 2004, a primary completion of Jan 2006 and a completion of Jan 2006. It does not say whether these dates are actual or estimated.

Results were first posted in Oct 2011, 5 years 9 months after primary completion.

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

Registered
Mar 15, 2005
First posted
Mar 16, 2005
Start
Jul 2004
Primary completionActual
Jan 2006
CompletionActual
Jan 2006
Results first posted
Oct 27, 2011
Last update
Nov 21, 2013
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 Nov 21, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00105534
Responsible party
Sponsor
First posted
Mar 16, 2005
Start date
Jul 2004
Primary completion
Jan 2006
Completion
Jan 2006
Results posted
Oct 27, 2011
Last update
Nov 21, 2013

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2013. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Azithromycin

Start the discussion