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An adaptive, Phase 2, double-blind, randomized, placebo-controlled, multicenter study to evaluate the safety, tolerability, immunogenicity, and pharmacodynamic effects of ACI-7104.056 in patients with early stages of Parkinson’s disease

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-500292-31-00
Acronym
ACI-7104-PD-2103
Enrollment
121
Registered
2022-10-13
Start date
2023-05-12
Completion date
Unknown
Last updated
2025-09-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Early stages of idiopathic Parkinson's Disease

Brief summary

Safety and Tolerability: Adverse events; physical and neurological examination results; global assessment of tolerability; vital signs; brain MRI; ectrocardiogram; routine laboratory tests (eg, hematology and biochemistry evaluation) in blood and urine; suicidality as measured with the Columbia Suicide Severity Rating Scale., Immunogenicity: Antibody response induced by the study vaccine.

Detailed description

Absolute levels and change from baseline in a-syn related fluid biomarkers, including pathogenic a-syn oligomer species and/or differentially phosphorylated synuclein species, in any collected blood and/or CSF sample., Change from baseline in DaT-SPECT at 48 weeks and 100 weeks., Absolute values and change from baseline in the MDS-UPDRS Part III score over 100 weeks.

Interventions

DRUGACI-7104.056
DRUGPlacebo (PBS-ALH02)
DRUGadjuvanted solution matching the study vaccine formulation

Sponsors

AC Immune S.A.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Safety and Tolerability: Adverse events; physical and neurological examination results; global assessment of tolerability; vital signs; brain MRI; ectrocardiogram; routine laboratory tests (eg, hematology and biochemistry evaluation) in blood and urine; suicidality as measured with the Columbia Suicide Severity Rating Scale., Immunogenicity: Antibody response induced by the study vaccine.

Secondary

MeasureTime frame
Absolute levels and change from baseline in a-syn related fluid biomarkers, including pathogenic a-syn oligomer species and/or differentially phosphorylated synuclein species, in any collected blood and/or CSF sample., Change from baseline in DaT-SPECT at 48 weeks and 100 weeks., Absolute values and change from baseline in the MDS-UPDRS Part III score over 100 weeks.

Countries

Germany, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026