Tests prasinezumab infusions against placebo in early Parkinson's disease
Tests prasinezumab, given into a vein, in adults with early-stage Parkinson's disease.
Plain-language title generated from the registry record
Registry title: A Study to Evaluate the Efficacy and Safety of Intravenous (IV) Prasinezumab in Participants With Early-Stage Parkinson's Disease
Key facts
- Where
- Braga, Coimbra, Funchal, Guimaraes, Lisbon, Senhora Da Hora, and Torres Vedras, PortugalSee the 7 sites
- Phase
- Phase 3
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 50 and 85 years old?
- Has a doctor told you that you have a different condition with similar signs, such as multiple system atrophy or progressive supranuclear palsy?
- Which medicine do you take for Parkinson's disease now?
- Are you pregnant, breastfeeding, or planning a pregnancy?
Source: NCT07174310, who can take part
Where in Portugal
- CCAB Centro Clinico Academico Braga AssociacaoBraga, PortugalTaking people
- Hospital da Luz Coimbra, S.A.Coimbra, PortugalTaking people
- Servico de Saude da Regiao Autonoma Da Madeira EPERAMFunchal, PortugalTaking people
- Unidade Local De Saude Do Alto Ave E.P.E.Guimaraes, PortugalTaking people
- Unidade Local De Saude De Santa Maria E.P.E.Lisbon, PortugalTaking people
- Unidade Local De Saude De Matosinhos E.P.E.Senhora Da Hora, PortugalTaking people
- CNS Saude Lda.Torres Vedras, PortugalTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Hoffmann-La Roche
- Trial code
- NCT07174310EU 2025-522683-32-00
- Record updated
- 5 November 2026
- Original description
The purpose of this study is to evaluate the efficacy, safety, and pharmacokinetics (PK) of prasinezumab compared with placebo in participants with early-stage Parkinson's disease (PD) on stable symptomatic monotherapy with levodopa.Read full original descriptionShow less
A Phase III, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Intravenous Prasinezumab in Participants With Early-Stage Parkinson's Disease
The purpose of this study is to evaluate the efficacy, safety, and pharmacokinetics (PK) of prasinezumab compared with placebo in participants with early-stage Parkinson's disease (PD) on stable symptomatic monotherapy with levodopa.
Inclusion: Body weight within 40-110 kilograms (kg) (88-242 pounds [lbs]) and a body mass index within the range 18-34 kg/m2; Diagnosis of idiopathic PD based on Movement Disorder Society (MDS) criteria; Has received monotherapy treatment; An MDS-UPDRS Part IV score of 0 at screening and prior to randomization; Hoehn and Yahr (H\&Y) Stage 1 or 2 off medication at screening and prior to randomization; Agreement to adhere to the contraception requirements.
Exclusion: Medical history indicating a parkinsonian syndrome other than idiopathic PD; Diagnosis of a significant neurologic disease other than PD; Chronic uncontrolled hypertension; Pregnant or breastfeeding, or intention of becoming pregnant during the study or within the time frame in which contraception is required.