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Proof of Concept Study of Cognitive Improvement in Patients With Alzheimer's Disease (Sirocco)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: July 13, 2007
Last Update Posted: October 12, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
The purpose of this study is to demonstrate that AZD3480 improves cognition in patients with mild or moderate Alzheimer's disease, to assess the safety and tolerability of ZAD3480 and to define the optimal dose(s) to be used in future trials.

Condition Intervention Phase
Alzheimer Disease Drug: AZD3480 Drug: Donepezil Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Multi-centre, Double-blind, Double-dummy, Placebo Controlled Parallel Group Randomized Phase IIb Proof of Concept Study With 3 Oral Dose Groups of AZD3480 or Donepezil During 12 Weeks Treatment in Patients With Alzheimer's Disease

Resource links provided by NLM:

Further study details as provided by AstraZeneca:

Primary Outcome Measures:
  • Change in ADAS-Cog [ Time Frame: assessed after 12 weeks treatment ]

Secondary Outcome Measures:
  • Change in ADCS-CGIC, Computerized neurological test battery (CDR) and MMSE [ Time Frame: assessed after 12 weeks treatment ]

Enrollment: 659
Study Start Date: July 2007
Study Completion Date: August 2008
Primary Completion Date: August 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: 1
Active Comparator: 2
Drug: Donepezil
Other Name: Aricept
Experimental: 3
Drug: AZD3480
3 oral doses


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   60 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Provision of informed consent from patient and caregiver
  • Clinical prognosis of probable Alzheimer's disease
  • Patient must have a caregiver visiting the patient at least three times weekly

Exclusion Criteria:

  • Significant neurologic disease or dementia other than Alzheimer's disease
  • Major depressive disorder, other major psychiatric disorder
  • Use of acetylcholinesterase inhibitor or memantine for treatment of Alzheimer's disease within 8 weeks prior to enrollment
  • Impaired vision and/or hearing making cognitive testing difficult
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00501111

  Show 71 Study Locations
Sponsors and Collaborators
Study Director: AstraZeneca AZD3480, Medical Science Director AstraZeneca
  More Information

Additional Information:
Responsible Party: AstraZeneca
ClinicalTrials.gov Identifier: NCT00501111     History of Changes
Other Study ID Numbers: D3690C00010
EuDract 2007-00835-24
First Submitted: July 12, 2007
First Posted: July 13, 2007
Last Update Posted: October 12, 2017
Last Verified: July 2014

Keywords provided by AstraZeneca:
Alzheimer Type
Alzheimer Disease

Additional relevant MeSH terms:
Alzheimer Disease
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders
Cholinesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Cholinergic Agents
Neurotransmitter Agents
Physiological Effects of Drugs
Nootropic Agents