ClinicalTrials.gg
CompletedNCT01784770RESCUE-LUpdated Nov 30, 2017Results posted

Special Investigation Of Azithromycin IV For Legionnaires' Disease (Regulatory Post Marketing Commitment Plan)

An observational study in Legionnaires' Disease and Legionella Pneumophila Infections, sponsored by Pfizer. Completed. Per ClinicalTrials.gov, last updated 2017-11-30.

Sponsored by Pfizer · Observational

Study type
Observational
Model
Case-only
Time perspective
Retrospective
Enrollment
21
Sex
All
01

Study summary

To collect retrospectively the efficacy and safety information of azithromycin IV on patients with Legionnaires' disease related to their appropriate use in daily practice.

02

Conditions studied

  • Legionnaires' Disease
  • Legionella Pneumophila Infections

Keywords

  • Legionnaires' disease
  • Legionella pneumophila
  • Zithromax
  • Zithromac
  • Japanese
  • Regulatory Post Marketing Commitment Plan
03

In context

Lead sponsor

Pfizer is the lead sponsor of 3,334 studies on the registry; 149 are open to participants now.

Of its 601 completed or terminated interventional studies of FDA-regulated products, 391 (65%) have results posted.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

The patients whom an investigator involving A0661208 prescribes the Zithromac IV.

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

  • All patients who are prescribed Azithromycin (Zithromac) IV for Legionnaires' disease.

Exclusion criteria

Exclusion Criteria:

  • Patients who have been prescribed Zithromac or Zithromac SR.
05

Study design

Observational model
Case-only
Time perspective
Retrospective
Enrollment
21 participants (actual)
Patient registry
No

Groups and cohorts

  • Azithromycin IV

    Subjects who are treated with Azithromycin IV for Legionnaires' disease

    Drug: Azithromycin IV

Interventions

  • The recommended dose of ZITHROMAC (azithromycin for injection) for the treatment of adult patients with community-acquired pneumonia due to the indicated organisms is: 500 mg as a single daily dose by the intravenous route for at least two days. Intravenous therapy should be followed by azithromycin by the oral route at a single, daily dose of 500 mg, administered as two 250-mg tablets to complete a 7- to 10-day course of therapy. The recommended dose of ZITHROMAC (azithromycin for injection) for the treatment of adult patients with pelvic inflammatory disease due to the indicated organisms is: 500 mg as a single daily dose by the intravenous route for one or two days. Intravenous therapy should be followed by azithromycin by the oral route at a single, daily dose of 250 mg to complete a 7-day course of therapy.

    Also known as: Zithromac IV

06

What researchers measure

Primary outcomes

  1. Number of Participants With Treatment-Related Adverse Events

    A treatment-related adverse event was any untoward medical occurrence attributed to Zithromac Intravenous use (and Zithromac Tablets) in a participant who received Zithromac Intravenous use. A treatment-related serious adverse event was a treatment-related adverse event resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; lifethreatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Relatedness to Zithromac Intravenous use (and Zithromac Tablets) was assessed by the physician.

    Time frame: 29 days

Secondary outcomes

  1. Clinical Effectiveness Rate in Participants

    Clinical effectiveness rate in participants, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of asssable effectiveness analysis population, was presented along with the corresponding 2-sided 95% CI. Clinical effectiveness of Zithromac Intravenous use (and Zithromac Tablets) was determined by the physician based on clinical symptoms and laboratory findings, and assessed according to the following categories: (1) effective, (2) ineffective, or (3) unassessable.

    Time frame: 29 days

07

Results

Posted Nov 30, 2017

Participant flow

Participant flow — Overall Study
MilestoneZithromac Intravenous Use (Azithromycin Hydrate)
Started21
Completed21
Not completed0

Outcome measures

PrimaryNumber of Participants With Treatment-Related Adverse Events

A treatment-related adverse event was any untoward medical occurrence attributed to Zithromac Intravenous use (and Zithromac Tablets) in a participant who received Zithromac Intravenous use. A treatment-related serious adverse event was a treatment-related adverse event resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; lifethreatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Relatedness to Zithromac Intravenous use (and Zithromac Tablets) was assessed by the physician.

Time frame:
29 days
Reported as:
Number · Participants
Number of Participants With Treatment-Related Adverse Events
ParticipantsZithromac Intravenous Use (Azithromycin Hydrate)
Treatment-Related Adverse Event2
Treatment-Related Serious Adverse Event0
SecondaryClinical Effectiveness Rate in Participants

Clinical effectiveness rate in participants, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of asssable effectiveness analysis population, was presented along with the corresponding 2-sided 95% CI. Clinical effectiveness of Zithromac Intravenous use (and Zithromac Tablets) was determined by the physician based on clinical symptoms and laboratory findings, and assessed according to the following categories: (1) effective, (2) ineffective, or (3) unassessable.

Time frame:
29 days
Reported as:
Number · Percentage of Participants
Clinical Effectiveness Rate in Participants
Percentage of ParticipantsZithromac Intravenous Use (Azithromycin Hydrate)
Clinical Effectiveness Rate in Participants95.2 (76.18 to 99.88)

Adverse events

Non-serious events are listed at a 1.0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Zithromac Intravenous Use (Azithromycin Hydrate)—1/21 (4.8%)7/21 (33.3%)
Most frequent serious events
Most frequent serious events
EventZithromac Intravenous Use (Azithromycin Hydrate)
Gastrointestinal haemorrhageGastrointestinal disorders1/21
Most frequent other events
Most frequent other events
EventZithromac Intravenous Use (Azithromycin Hydrate)
BradycardiaCardiac disorders1/21
Hepatic function abnormalHepatobiliary disorders1/21
Liver disorderHepatobiliary disorders1/21
Toxic skin eruptionSkin and subcutaneous tissue disorders1/21
Chondrocalcinosis pyrophosphateMusculoskeletal and connective tissue disorders1/21
CrystalluriaRenal and urinary disorders1/21
PollakiuriaRenal and urinary disorders1/21

Baseline characteristics

A total of 21 participants completed this study. There is no protocol violation.

Age, Customized
Age, Customized(Participants)Zithromac Intravenous Use (Azithromycin Hydrate)
<15 years0
≥15 and <65 years14
≥65 years7
Sex: Female, Male
Sex: Female, Male(Participants)Zithromac Intravenous Use (Azithromycin Hydrate)
Female4
Male17
08

Study locations

No study locations are listed for this record.

09

References and documents

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Mar 2013 to primary completion in Jul 2016, 40 months.

Results were first posted in Nov 2017, 1 year 4 months after primary completion.

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

Registered
Feb 4, 2013
First posted
Feb 6, 2013
StartActual
Mar 27, 2013
Primary completionActual
Jul 29, 2016
CompletionActual
Jul 29, 2016
Results first posted
Nov 30, 2017
Last update
Nov 30, 2017
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 30, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01784770
Lead sponsor
Pfizer
Responsible party
Sponsor
First posted
Feb 6, 2013
Start date
Mar 27, 2013
Primary completion
Jul 29, 2016
Completion
Jul 29, 2016
Results posted
Nov 30, 2017
Last update
Nov 30, 2017

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

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

Not currently enrolling

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

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