CClinicalTrials.gg
CompletedNCT01227395Updated Apr 26, 2013Results posted

Drug Use Investigation On Zithromac (Azithromycin) In HIV Patients

An observational study in HIV Infection, sponsored by Pfizer. Completed. Per ClinicalTrials.gov, last updated 2013-04-26.

Sponsored by Pfizer · Observational

Study type
Observational
Model
Case-only
Time perspective
Retrospective
Enrollment
476
Sex
All
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Study summary

The investigation will be conducted for the purpose of determining the condition of occurrence of Adverse Events under the actual post-marketing use of Zithromac 600mg Tablet, verifying the therapeutic effects, detecting unknown Adverse Drug Reactions and drug interactions and determining the factors affecting safety and efficacy.

Read the detailed description

All the patients whom an investigator prescribes the first Zithromac Tablets 600mg should be registered consecutively until the number of subjects reaches target number in order to extract patients enrolled into the investigation at random.

02

Conditions studied

  • HIV Infection

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Keywords

  • HIV
  • Post Marketing Surveillance
03

In context

HIV Infections

4,259 studies on the registry are indexed under HIV Infections; 241 are open to participants now.

This study's enrollment of 476 is above the median of 200 across 713 observational studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (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 subjects whom an investigator involving A0661097 prescribes the Azithromycin Tablets 600mg (Zithromac Tablets 600mg).

Inclusion criteria

Patients need to be administered Zithromac Tablets 600mg in order to be enrolled in the surveillance.

Exclusion criteria

Exclusion Criteria:

Patients not administered Zithromac Tablets 600mg.

05

Study design

Observational model
Case-only
Time perspective
Retrospective
Enrollment
476 participants (actual)

Groups and cohorts

  • Azithromycin

    Patients taking Azithromycin.

    Drug: Azithromycin

Interventions

  • DrugAzithromycin

    Inhibition of onset: Perorally administer 1200mg of azithromycin (potency) once a week to adults. Treatment: Perorally administer 600mg of azithromycin (potency) once a day to adults.

    Also known as: Zithromac, Zithromax, Azithromycin

06

What researchers measure

Primary outcomes

  1. Number of Participants With the Frequency of Treatment Related Adverse Events.

    Adverse events mean all unfavorable events that occur in participants after administration of Azithromycin, irrespective of causal relationship to Azithromycin (including clinically problematic abnormal changes in laboratory test values). Treatment related Adverse Events were evaluated in company with the causal relationship to Azithromycin.

    Time frame: 9 years(MAX)

  2. Number of Unlisted Treatment Related Adverse Events in Japanese Package Insert.

    Adverse events mean all unfavorable events that occur in participants after administration of Azithromycin, irrespective of causal relationship to Azithromycin (including clinically problematic abnormal changes in laboratory test values). Number of Treatment Related Adverse Events were evaluated in company with the causal relationship to Azithromycin. Unlisted treatment related adverse events were confirmed with listed adverse drug reaction in Japanese package insert.

    Time frame: 9 years(MAX)

  3. Risk Factors for the Frequency of Treatment Related Adverse Events -Age (Prophylaxis).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether \<65 years or \>=65 years is significant risk factor.

    Time frame: 9 years(MAX)

  4. Risk Factors for the Frequency of Treatment Related Adverse Events -Gender (Prophylaxis).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin Tablets to determine whether male or female is significant risk factor.

    Time frame: 9 years(MAX)

  5. Risk Factors for the Frequency of Treatment Related Adverse Events -Concomitant Drugs (Prophylaxis).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin Tablets to determine whether with or without concomitant drugs is significant risk factor.

    Time frame: 9 years(MAX)

  6. Risk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Prophylaxis).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without renal dysfunction is significant risk factor.

    Time frame: 9 years(MAX)

  7. Risk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Prophylaxis).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without allergies is significant risk factor.

    Time frame: 9 years(MAX)

  8. Risk Factors for the Frequency of Treatment Related Adverse Events -Age (Treatment).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether \<65 years or \>=65 years is significant risk factor.

    Time frame: 9 years(MAX)

  9. Risk Factors for the Frequency of Treatment Related Adverse Events -Gender (Treatment).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin Tablets to determine whether male or female is significant risk factor.

    Time frame: 9 years(MAX)

  10. Risk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Treatment).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without renal dysfunction is significant risk factor.

    Time frame: 9 years(MAX)

  11. Risk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Treatment).

    Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without allergies is significant risk factor.

    Time frame: 9 years(MAX)

Secondary outcomes

  1. Number of Participants That Responded to Azithromycin Treatment.

    The physician performed efficacy evaluations at the end of the observation period (or the time of discontinuing administration), compared with the data before the start of administration of this drug, and entered the results.

    Time frame: 9 years(MAX)

  2. Number of Participants Prevented by Azithromycin Treatment.

    The physician performed efficacy evaluations at the end of the observation period (or the time of discontinuing administration), compared with the data before the start of administration of this drug, and entered the results.

    Time frame: 9 years(MAX)

07

Results

Posted Apr 16, 2013

Participant flow

This was a phase 4, observational, open-label study conducted in participants who were prescribed azithromycin by their treating physician per usual clinical practice. Study drug was not provided by the Sponsor.

Participant flow — Overall Study
MilestoneAzithromycin for ProphylaxisAzithromycin for Treatment
Started39185
Completed39184
Not completed01
Withdrew: Protocol violation01

Outcome measures

PrimaryNumber of Participants With the Frequency of Treatment Related Adverse Events.

Adverse events mean all unfavorable events that occur in participants after administration of Azithromycin, irrespective of causal relationship to Azithromycin (including clinically problematic abnormal changes in laboratory test values). Treatment related Adverse Events were evaluated in company with the causal relationship to Azithromycin.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Number of Participants With the Frequency of Treatment Related Adverse Events.
participantsAzithromycin for ProphylaxisAzithromycin for Treatment
Number of Participants With the Frequency of Treatment Related Adverse Events.7310
PrimaryNumber of Unlisted Treatment Related Adverse Events in Japanese Package Insert.

Adverse events mean all unfavorable events that occur in participants after administration of Azithromycin, irrespective of causal relationship to Azithromycin (including clinically problematic abnormal changes in laboratory test values). Number of Treatment Related Adverse Events were evaluated in company with the causal relationship to Azithromycin. Unlisted treatment related adverse events were confirmed with listed adverse drug reaction in Japanese package insert.

Time frame:
9 years(MAX)
Reported as:
Number · Events
Number of Unlisted Treatment Related Adverse Events in Japanese Package Insert.
EventsAzithromycin for ProphylaxisAzithromycin for Treatment
Number of Unlisted Treatment Related Adverse Events in Japanese Package Insert.379
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Age (Prophylaxis).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether \<65 years or \>=65 years is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Age (Prophylaxis).
participants<65 Years>=65 Years
Risk Factors for the Frequency of Treatment Related Adverse Events -Age (Prophylaxis).721
Statistical analysis
  • <65 Years vs >=65 Years · Fisher Exact · p = =0.696
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Gender (Prophylaxis).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin Tablets to determine whether male or female is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Gender (Prophylaxis).
participantsMaleFemale
Risk Factors for the Frequency of Treatment Related Adverse Events -Gender (Prophylaxis).658
Statistical analysis
  • Male vs Female · Fisher Exact · p = =0.334
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Concomitant Drugs (Prophylaxis).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin Tablets to determine whether with or without concomitant drugs is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Concomitant Drugs (Prophylaxis).
participantsAzithromycin With Concomitant DrugsAzithromycin Without Concomitant Drugs
Risk Factors for the Frequency of Treatment Related Adverse Events -Concomitant Drugs (Prophylaxis).730
Statistical analysis
  • Azithromycin With Concomitant Drugs vs Azithromycin Without Concomitant Drugs · Fisher Exact · p = =1.000
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Prophylaxis).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without renal dysfunction is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Prophylaxis).
participantsAzithromycin With Renal DysfunctionAzithromycin Without Renal Dysfunction
Risk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Prophylaxis).271
Statistical analysis
  • Azithromycin With Renal Dysfunction vs Azithromycin Without Renal Dysfunction · Fisher Exact · p = =1.000
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Prophylaxis).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without allergies is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Prophylaxis).
participantsAzithromycin With AllergiesAzithromycin Without Allergies
Risk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Prophylaxis).2833
Statistical analysis
  • Azithromycin With Allergies vs Azithromycin Without Allergies · Fisher Exact · p = =0.015
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Age (Treatment).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether \<65 years or \>=65 years is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Age (Treatment).
participants<65 Years>=65 Years
Risk Factors for the Frequency of Treatment Related Adverse Events -Age (Treatment).100
Statistical analysis
  • <65 Years vs >=65 Years · Fisher Exact · p = =1.000
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Gender (Treatment).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin Tablets to determine whether male or female is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Gender (Treatment).
participantsMaleFemale
Risk Factors for the Frequency of Treatment Related Adverse Events -Gender (Treatment).82
Statistical analysis
  • Male vs Female · Fisher Exact · p = =0.290
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Treatment).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without renal dysfunction is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Treatment).
participantsAzithromycin With Renal DysfunctionAzithromycin Without Renal Dysfunction
Risk Factors for the Frequency of Treatment Related Adverse Events -Renal Dysfunction (Treatment).46
Statistical analysis
  • Azithromycin With Renal Dysfunction vs Azithromycin Without Renal Dysfunction · Fisher Exact · p = =0.003
PrimaryRisk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Treatment).

Number of participants with Treatment Related Adverse Events(TRAEs) of Azithromycin to determine whether with or without allergies is significant risk factor.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Risk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Treatment).
participantsAzithromycin With AllergiesAzithromycin Without Allergies
Risk Factors for the Frequency of Treatment Related Adverse Events -Allergies (Treatment).37
Statistical analysis
  • Azithromycin With Allergies vs Azithromycin Without Allergies · Fisher Exact · p = =0.707
SecondaryNumber of Participants That Responded to Azithromycin Treatment.

The physician performed efficacy evaluations at the end of the observation period (or the time of discontinuing administration), compared with the data before the start of administration of this drug, and entered the results.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Number of Participants That Responded to Azithromycin Treatment.
participantsAzithromycin for Treatment
Number of Participants That Responded to Azithromycin Treatment.51
SecondaryNumber of Participants Prevented by Azithromycin Treatment.

The physician performed efficacy evaluations at the end of the observation period (or the time of discontinuing administration), compared with the data before the start of administration of this drug, and entered the results.

Time frame:
9 years(MAX)
Reported as:
Number · participants
Number of Participants Prevented by Azithromycin Treatment.
participantsAzithromycin for Prophylaxis
Number of Participants Prevented by Azithromycin Treatment.375

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Azithromycin for Prophylaxis—11/391 (2.8%)62/391 (15.9%)
Azithromycin for Treatment—4/84 (4.8%)6/84 (7.1%)
Most frequent serious events
Showing 10 of 13
Most frequent serious events
EventAzithromycin for ProphylaxisAzithromycin for Treatment
Progressive multifocal leukoencephalopathyInfections and infestations0/3911/84
AnaemiaBlood and lymphatic system disorders2/3911/84
Renal failure acuteRenal and urinary disorders0/3911/84
Renal disorderRenal and urinary disorders0/3911/84
Hepatic function abnormalHepatobiliary disorders3/3910/84
Idiopathic thrombocytopenic purpuraBlood and lymphatic system disorders1/3910/84
PancytopeniaBlood and lymphatic system disorders1/3910/84
HypokalaemiaMetabolism and nutrition disorders1/3910/84
HyponatraemiaMetabolism and nutrition disorders1/3910/84
Duodenal stenosisGastrointestinal disorders1/3910/84
Most frequent other events
Showing 10 of 48
Most frequent other events
EventAzithromycin for ProphylaxisAzithromycin for Treatment
DiarrhoeaGastrointestinal disorders10/3911/84
HyperlipidaemiaMetabolism and nutrition disorders5/3911/84
NauseaGastrointestinal disorders5/3910/84
Hepatic function abnormalHepatobiliary disorders5/3911/84
HyperbilirubinaemiaHepatobiliary disorders5/3910/84
HyperthyroidismEndocrine disorders1/3911/84
HypoacusisEar and labyrinth disorders0/3911/84
DeafnessEar and labyrinth disorders0/3911/84
Gastrooesophageal reflux diseaseGastrointestinal disorders0/3911/84
RashSkin and subcutaneous tissue disorders2/3911/84

Baseline characteristics

Age, Customized
Age, Customized(participants)Azithromycin for ProphylaxisAzithromycin for TreatmentTotal
<65 years38183464
>=65 years10111
Sex: Female, Male
Sex: Female, Male(Participants)Azithromycin for ProphylaxisAzithromycin for TreatmentTotal
Female31940
Male36075435
08

Study locations

No study locations are listed for this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 26, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01227395
Lead sponsor
Pfizer
Collaborators
Altmarc Inc.
Responsible party
Sponsor
First posted
Oct 25, 2010
Start date
Jul 2002
Primary completion
Mar 2012
Completion
Mar 2012
Results posted
Apr 16, 2013
Last update
Apr 26, 2013

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

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

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