---
title: An open-label, single-center study to evaluate the safety and test-retest characteristics of [11C]MODAG-005 as PET radioligand for imaging pathological alpha-synuclein deposition in the brains of patients with Parkinson’s disease (PD) or Multiple System Atrophy (MSA) compared to age-matched healthy controls (AMHC)
euct_id: 2023-506965-72-00
phase: Phase 1
status: Not yet recruiting
sponsor: Modag GmbH
canonical_url: "https://parkinsonspathways.com/trials/eu/2023-506965-72-00"
eu_clinical_trials_register: "https://euclinicaltrials.eu/ctis-public/view/2023-506965-72-00"
ctis_last_updated: "2026-05-05T03:32:04.326661019"
source: EU Clinical Trials Information System (CTIS)
---
# An open-label, single-center study to evaluate the safety and test-retest characteristics of [11C]MODAG-005 as PET radioligand for imaging pathological alpha-synuclein deposition in the brains of patients with Parkinson’s disease (PD) or Multiple System Atrophy (MSA) compared to age-matched healthy controls (AMHC)

**EU CT Number:** [2023-506965-72-00](https://euclinicaltrials.eu/ctis-public/view/2023-506965-72-00)

## Key Facts

- **Phase:** Phase 1
- **Status:** Not yet recruiting
- **Sponsor:** Modag GmbH
- **Start Date:** 2026-04-01
- **Completion Date:** 2027-06-30
- **Conditions:** Parkinson Disease, Multiple System Atrophy, Healthy Volunteer, Parkinson's disease, Clinical trial healthy volunteer

## Member States

Trial is authorized in 1 member state: Germany.

## Sites (1)

- Universitätsklinikum Tübingen, Tübingen, Germany

## Eligibility (CTIS)

- **Minimum age:** 18 Years
- **Sex:** ALL

```
Condition: Parkinson Disease; Multiple System Atrophy; Healthy Volunteer; Parkinson's disease; Clinical trial healthy volunteer
Age groups: adults 18-64, elderly 65+
Sex: male, female
```

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*Canonical: https://parkinsonspathways.com/trials/eu/2023-506965-72-00*  
*HTML version: https://parkinsonspathways.com/trials/eu/2023-506965-72-00*  
*Source data: https://euclinicaltrials.eu/ctis-public/view/2023-506965-72-00*