Table of Contents
- What is FNP-223?
- What is Progressive Supranuclear Palsy (PSP)?
- Clinical Trial Details
- Who Can Participate in the Study?
- Study Objectives
- What Will Be Measured?
- Potential Benefits and Risks
What is FNP-223?
FNP-223 is a new medication being studied for the treatment of Progressive Supranuclear Palsy (PSP). Its scientific name is (S)-N-(5-(4-(1-(BENZO[D][1,3]DIOXOL-5-YL)ETHYL)PIPERAZIN-1-YL)-1,3,4-THIADIAZOL-2-YL)ACETAMIDE, HYDROCHLORIDE SALT. It comes in the form of a film-coated tablet that is taken orally (by mouth)[1].
What is Progressive Supranuclear Palsy (PSP)?
Progressive Supranuclear Palsy (PSP) is a rare brain disorder that affects movement, balance, and eye control. It is a progressive disease, which means it gets worse over time. PSP can cause problems with walking, balance, speech, swallowing, and vision. The term “supranuclear” refers to the area of the brain affected by the disease, which is above specific clusters of nerve cells called nuclei that control eye movements[1].
Clinical Trial Details
The clinical trial for FNP-223 is called PROSPER. It is a Phase 2 study, which means it is testing how safe and effective the medication is for people with PSP. The study is randomized (participants are assigned to groups by chance), double-blind (neither the participants nor the researchers know who is receiving the actual medication or a placebo), and placebo-controlled (some participants will receive a dummy pill instead of the real medication)[1].
Who Can Participate in the Study?
The study is looking for participants who meet certain criteria, including:
- Men and women aged 50 to 80 years old
- Diagnosed with possible or probable PSP-Richardson’s Syndrome (PSP-RS)
- Have had PSP symptoms for 3 years or less
- Can walk independently or with minimal assistance
- Have a caregiver who can accompany them to study visits
There are also several conditions that would prevent someone from participating in the study, such as certain other medical conditions or medications[1].
Study Objectives
The main goals of the study are:
- To see if FNP-223 can slow down the progression of PSP over 52 weeks (about 1 year)
- To check how safe FNP-223 is when taken for 52 weeks
- To understand how the medication affects the severity of PSP symptoms
- To see how FNP-223 impacts cognitive function (thinking and memory) and quality of life
- To study how the medication is processed in the body (pharmacokinetics)[1]
What Will Be Measured?
The study will use several tools to measure the effects of FNP-223, including:
- The PSP Rating Scale (PSPRS): This measures the severity of PSP symptoms
- Clinical Global Impression of Severity (CGI-S): This is the doctor’s assessment of how severe the disease is
- Patient and Caregiver Global Impression of Severity (PGI-S and CaGI-S): These measure how severe the patient and their caregiver think the disease is
- Montreal Cognitive Assessment (MoCA): This tests cognitive function
- PSP Quality of Life scale (PSP-QoL): This measures how PSP affects quality of life[1]
Potential Benefits and Risks
While FNP-223 shows promise in potentially slowing the progression of PSP, it’s important to remember that this is still an experimental drug. The study aims to determine if it is safe and effective. As with any clinical trial, there may be risks and side effects that are not yet known.
Participants in the study will be closely monitored for any side effects or changes in their condition. The study will also look at how FNP-223 affects things like blood tests, heart function (ECG), and mental health[1].
If you or a loved one has PSP and is interested in this study, it’s important to discuss it with your healthcare provider. They can help you understand if you might be eligible and whether participating in the study could be right for you.


