Open Label Study of ATH-1017 for Treatment of Mild to Moderate Alzheimer's Disease
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ClinicalTrials.gov Identifier: NCT04886063 |
Recruitment Status :
Enrolling by invitation
First Posted : May 13, 2021
Last Update Posted : August 21, 2023
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Condition or disease | Intervention/treatment | Phase |
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Alzheimer Disease | Drug: ATH-1017 | Phase 2 Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 450 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Intervention Model Description: | Open label extension |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Open-Label Extension of Studies ATH-1017-AD-0201 and ATH-1017-AD-0202 in Subjects With Mild to Moderate Alzheimer's Disease |
Actual Study Start Date : | June 30, 2021 |
Estimated Primary Completion Date : | January 2027 |
Estimated Study Completion Date : | February 2027 |

Arm | Intervention/treatment |
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Experimental: Treatment
Daily subcutaneous (SC) injection of ATH-1017 - 40mg Dosage
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Drug: ATH-1017
Daily subcutaneous (SC) injection of ATH-1017 in a pre-filled syringe |
- Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability] [ Time Frame: 130 Weeks ]Description - To determine the safety and tolerability of ATH-1017 over an additional 130-week period in subjects with mild to moderate Alzheimer's disease (AD) who completed the 26-week randomized treatment in Study ATH-1017-AD-0201 or Study ATH-1017-AD-0202

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Ages Eligible for Study: | 55 Years to 85 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Subject has completed the Week 26 visit of either of the two blinded parent studies (ATH-1017-AD-0201 or ATH-1017-AD-0202).
- Reliable and capable support person/caregiver who is willing to accept responsibility for supervising the daily treatment or, if required, administering study drug.
- Subject capable of giving signed informed consent, or by a legally acceptable representative.
- Subjects must be in generally good health.
- Male subjects and their partners must agree to continue to use a double-barrier method of contraception during the study, including the follow-up period, unless the partner is not of childbearing potential.
Exclusion Criteria:
- Subject has experienced a serious adverse event during the parent study, which could present an increased safety risk during the open label extension.
- New diagnosis of severe major depressive disorder even without psychotic features.
- Any subject with formalized delusions or hallucinations.
- Significant suicide risk.
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Newly-diagnosed malignant tumor, except for the following conditions that are stable in the judgement of the investigator:
- Adequately treated squamous and basal cell carcinoma, or squamous and basal cell carcinoma in situ
- Prostate carcinoma in situ

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): NCT04886063

Responsible Party: | Athira Pharma |
ClinicalTrials.gov Identifier: | NCT04886063 |
Other Study ID Numbers: |
ATH-1017-AD-0203 |
First Posted: | May 13, 2021 Key Record Dates |
Last Update Posted: | August 21, 2023 |
Last Verified: | February 2023 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Alzheimer's Dementia ATH-1017 Open Label |
Alzheimer Disease Dementia Brain Diseases Central Nervous System Diseases Nervous System Diseases |
Tauopathies Neurodegenerative Diseases Neurocognitive Disorders Mental Disorders |