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CompletedPhase 3Results posted

An Exploratory Study of the Effect of Treatment Interruption on Safety of Exenatide in Patients With Type 2 Diabetes

Lead sponsor

AstraZeneca

Asset

Exenatide

Subcutaneous · GLP-1 agonist

Listed sites

13

Recruiting sites

Enrollment

58

actual

Study population

Type 2 diabetes

Key I/E criterion

HbA1c ≤10.5%

Primary endpoints

Immunogenicity (ADA)Treatment-emergent AEs (any)

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT00516048
Org study IDH8O-MC-GWBO

Timeline

Milestones

Study first posted2007-08-14estimated
Results first posted2009-06-17estimated
Last update posted2015-04-07estimated
Study start2007-08 (month precision)
Primary completion2008-04actual (month precision)
Study completion2008-04actual (month precision)

Assets

Investigational agents

Study populations

Who this study enrolls

Type 2 diabetes

Eligibility

Who can enroll

Minimum age20 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

Diagnosed with type 2 diabetes.
Have been exposed to exenatide for at least 3 months in previous Amylin/Lilly Studies H8O-MC-GWAO, H8O-MC-GWAP, H8O-MC-GWAT, or H8O-MC-GWBA.
Have interrupted exenatide treatment for a period of at least 2 months.
HbA1c of ≤10.5%.

Exclusion criteria

Have received treatment within the last 30 days with a drug that has not received regulatory approval for any indication at the time of study entry.
Have previously completed or withdrawn from this study.
Have taken marketed exenatide (Byetta) during the interim period between studies GWAO, GWAP, GWAT, or GWBA and the current study.
Used drugs for weight loss (for example, Xenical® [orlistat], Meridia® [sibutramine], Acutrim® [phenylpropanolamine], Accomplia® [rimonabant], or similar over-the-counter medications) within 3 months of screening.
Are currently treated with any of the following excluded medications: Drugs that directly affect gastrointestinal motility, including, but not limited to: Reglan® (metoclopramide), Propulsid® (cisapride), and chronic macrolide antibiotics.
Use insulin with daily dosage exceeding 1 U/kg.

Endpoints (3)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Safety / tolerability / PK
2
Glycemic / diabetes
1

Glycemic / diabetes

1 endpoint
Secondary/protocol endpoint

Change in Hemoglobin A1c (HbA1c) From Baseline to Endpoint

Time frame:24 weeks

HbA1c, change

change from baseline, improvement

LOINC 4548-4

Posted result

GroupValue (mean), percent95% CI
Exenatide:Treatment-Emergent Antibody NegativeBaseline HbA1c (Week 0)8.13
Change in HbA1c at endpoint (Week 24)-1.03
Exenatide: Treatment-Emergent Antibody PositiveBaseline HbA1c (Week 0)8.05
Change in HbA1c at endpoint (Week 24)-0.30
Enrolled But Withdrew Before Receiving TreatmentBaseline HbA1c (Week 0)0
Change in HbA1c at endpoint (Week 24)0

Safety / tolerability / PK

2 endpoints
Primary/protocol endpoint

Treatment-emergent Antibody Status (Maximum Titer Level Experienced)

Time frame:24 weeks

Immunogenicity (ADA)

descriptive

Posted result

GroupValue (number), Participants95% CI
Exenatide:Treatment-Emergent Antibody NegativeAntibody negative15
Low titer antibodies0
Higher titer antibodies0
Exenatide: Treatment-Emergent Antibody PositiveAntibody negative0
Low titer antibodies25
Higher titer antibodies17
Enrolled But Withdrew Before Receiving TreatmentAntibody negative0
Low titer antibodies0
Higher titer antibodies0
Primary/protocol endpoint

Incidence of Potentially Immune-related Treatment-emergent Adverse Events

Time frame:24 weeks

Treatment-emergent AEs (any)

event count, event

Posted result

GroupValue (number), participants95% CI
Exenatide:Treatment-Emergent Antibody NegativeArthralgia1
Spinal osteoarthritis1
Injection site pruritis0
Injection site rash0
Rash0
Eye allergy0
Exenatide: Treatment-Emergent Antibody PositiveArthralgia0
Spinal osteoarthritis0
Injection site pruritis2
Injection site rash1
Rash1
Eye allergy1
Enrolled But Withdrew Before Receiving TreatmentArthralgia0
Spinal osteoarthritis0
Injection site pruritis0
Injection site rash0
Rash0
Eye allergy0

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableClinicalTrials.gov results section

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.