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Progressive Supranuclear PalsyPhase 2NCT05819658

GV1001 Subcutaneous(SC) for the Treatment of Progressive Supranuclear Palsy (PSP)

A Phase 2 study testing GV1001 0.56mg and GV1001 1.12mg in people with Progressive Supranuclear Palsy, run by GemVax & Kael at 5 sites in South Korea.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The study will be conducted by the Sponsor to evaluate the efficacy and safety of GV1001 (0.56 mg and 1.12 mg) administered subcutaneously as a treatment for Progressive Supranuclear Palsy, (PSP). Read more about this study

Who is it for?
Ages 41 to 85 years
Conditions the study is for
Progressive Supranuclear Palsy
What is being tested?
GV1001 0.56mg and GV1001 1.12mg
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
78 participants
Where
5 sitesSouth Korea
Study dates
14 Jun 2023to 11 Oct 2024
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 41 to 85 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients aged ≥41 years to ≤ 85 years.
  • Clinical diagnosis of probable progressive supranuclear palsy (PSP).
  • Patient is on a stable therapy for a neurological drug for at least 1 month prior to screening visit.
  • Patients who are able to walk 3 meters or more independently or with assistive devices.
  • Score 15 points ≥ on the Korean Mini-Mental Status Exam (K-MMSE) at the screening visit.
  • Have reliable caregiver to accompany participant to all study visits.
  • Patients and/or their representatives who have voluntarily provided a written consent for participation in this clinical study.

Who cannot join

  • Patients who have Presence of structural lesions or Suspected concurrent onset of central nervous system diseases based on the CT/MRI scan results and neurological examinations performed within 12 months of screening or at screening.
  • Patients with a history of known or suspected seizures.
  • Patients with a recent unexplained loss of consciousness within 3 months prior to screening or a history of significant head trauma with loss of consciousness.
  • Patients with acute or unstable cardiovascular disease, uncontrolled hypertension, uncontrolled diabetes, or any other medical condition that can interfere with completing the clinical study.
  • Patients with hypersensitivity reactions to the ingredients of the investigational product.
  • Patients with a history of cancer within 5 years prior to screening.
Show all 15Show fewer
  • Patients with abnormal renal function.
  • Patients with severe liver function abnormalities.
  • Patients weighing ≤35 kg.
  • Among the female subjects who does not agree to use proper contraception.
  • Pregnant or breastfeeding women.
  • Patients who participated in another clinical study within 4 weeks prior to screening and were administered investigational products or were applied investigational medical devices.
  • Patients who were administered the study drug (GV1001) of this clinical study within 12 months prior to screening.
  • Patients who participated in a clinical study for progressive supranuclear palsy within 6 months prior to screening.
  • Other patients judged by the investigator as ineligible to participate in this clinical study.

Trial locations and contacts

5 sites in 1 country.

5 sites in 1 country

South Korea5 sites
  • Seoul National University Bundang Hospital

    Seongnam-si

  • Kyung Hee University Hospital

    Seoul

  • Samsung Medical Center

    Seoul

  • Seoul Metropolitan Government Seoul National University Boramae Medical Center

    Seoul

  • Seoul National University Hospital

    Seoul

Other trials in South Korea

About this study

Official title: A Multi-center, Randomized, Double-blind, Placebo-controlled, Parallel Design, Prospective, Phase IIa Exploratory Clinical Trial to Evaluate the Efficacy and Safety of SC Administration of GV1001 0.56 or 1.12 mg/Day in Patients With PSP

The study will be conducted by the Sponsor to evaluate the efficacy and safety of GV1001 (0.56 mg and 1.12 mg) administered subcutaneously as a treatment for Progressive Supranuclear Palsy, (PSP). In 75 patients diagnosed with PSPR Richardson(PSP-RS) or PSP-Parkinsonism (PSP-P) at five hospitals in Korea, subcutaneous administration of GV1001 0.56 or 1.12 mg/day will be conducted with multicenter, randomized, double-blind, placebo-controlled, parallel design, prospective phase 2a.

Read the detailed description

This is a 24-week, multicenter, randomized, double-blind, placebo-controlled, parallel design, prospective, Phase 2a exploratory clinical study. If the subject and/or the subject's representative provide a written consent to participate in this clinical study, the required examinations and tests will be performed at the screening visit, and the screening period will run for 4 weeks or shorter. Subjects who are ultimately determined as eligible by the inclusion/exclusion criteria after screening will be randomized at a 1:1:1 ratio to Study Group 1 (GV1001 0.56 mg/day), Study Group 2 (GV1001 1.12 mg/day), or the placebo group depending on the study site in which they are enrolled. Depending on the randomization results, subjects will be administered the investigational product (study drug or placebo) once weekly for the first 4 weeks (1 month), and then administered 10 times at 2-week intervals for 20 weeks (5 months) for a total of 14 doses over 24 weeks (6 months). All subjects will visit the institution according to the planned clinical study schedule to receive the investigational product and to be evaluated for efficacy and safety. To ensure the objectivity and accuracy of the study results, the individuals evaluating efficacy will be limited to neurologists who have been sufficiently educated and trained, and the collection of efficacy and safety evaluation data and biomarkers will be performed in a consistent order at each visit.

Being tested
GV1001 Placebo, GV1001 0.56mg, GV1001 1.12mg
Keywords
Progressive Supranuclear Palsy, GV1001
Medical subject headings
Supranuclear Palsy, Progressive

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • GV1001 PlaceboDrug

    Also called Normal saline

    0.9% normal saline

  • GV1001 0.56mgDrug

    Also called Tertomotide 0.84mg

    Lyophilized peptide from hTERT

  • GV1001 1.12mgDrug

    Also called Tertomotide 1.68mg

    Lyophilized peptide from hTERT

Study groups in NCT05819658
Study groupRoleWhat they receive
PlaceboPlacebo comparatorPlacebo SC injection will be administered once weekly for 4 weeks then every 2 weeks through Week 24 for double blind phase.
Receives: Drug: GV1001 Placebo
GV1001 0.56 mgExperimentalGV1001 0.56 mg SC injection will be administered once weekly for 4 weeks then every 2 weeks through Week 24 for double blind phase.
Receives: Drug: GV1001 0.56mg
GV1001 1.12 mgExperimentalGV1001 1.12 mg SC injection administered once weekly for 4 weeks then every 2 weeks through Week 24 for double blind phase.
Receives: Drug: GV1001 1.12mg

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change From the Baseline in the Total Score of PSP-rating Scale

    Change from the baseline in the total score of PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 100 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

Secondary outcomes (21)
  1. Change From the Baseline in the Total Score of PSP-rating Scale

    Change from the baseline in the total score of PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 100 with a higher score indicating severely impaired cognitive function.

    Measured: 12 Weeks(3 months)

  2. Change From the Baseline in the Montreal Cognitive Assessment - Korea (MoCAK)

    Change from the baseline in the Montreal Cognitive Assessment - Korea (MoCAK) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 30 with a higher score indicating greater cognitive function.

    Measured: 12 weeks (3 Months)

  3. Change From the Baseline in the Montreal Cognitive Assessment - Korea (MoCAK)

    Change from the baseline in the Montreal Cognitive Assessment - Korea (MoCAK) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 30 with a higher score indicating greater cognitive function.

    Measured: 24 weeks(6 months)

  4. Change From the Baseline in the Korean Frontal Assessment Battery (K-FAB)

    Change from the baseline in the Korean Frontal Assessment Battery (K-FAB) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 18 with a higher score indicating greater cognitive function.

    Measured: 12 weeks(3 months)

  5. Change From the Baseline in the Korean Frontal Assessment Battery (K-FAB)

    Change from the baseline in the Korean Frontal Assessment Battery (K-FAB) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 18 with a higher score indicating greater cognitive function.

    Measured: 24 weeks(6 months)

  6. Change From the Baseline in the England & Schwab Activity of Daily Living (ES ADL) Scale

    Change from the baseline in the England \& Schwab Activity of Daily Living (ES ADL) scale after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 (complete dependence) to 100% (complete independence) based on the level of independence.

    Measured: 12 weeks(3 months)

  7. Change From the Baseline in the England & Schwab Activity of Daily Living (ES ADL) Scale

    Change from the baseline in the England \& Schwab Activity of Daily Living (ES ADL) scale after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 (complete dependence) to 100% (complete independence) based on the level of independence.

    Measured: 24 weeks(6 months)

  8. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (History)

    Change from the baseline in the score of [History] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 24 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  9. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (History)

    Change from the baseline in the score of [History] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 24 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

  10. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Mentation)

    Change from the baseline in the score of [Mentation] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 16 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  11. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Mentation)

    Change from the baseline in the score of [Mentation] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 16 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

  12. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Bulbar)

    Change from the baseline in the score of [Bulbar] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 8 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  13. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Bulbar)

    Change from the baseline in the score of [Bulbar] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 8 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

  14. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Ocular Motor)

    Change from the baseline in the score of [Ocular Motor] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 16 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  15. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Ocular Motor)

    Change from the baseline in the score of [Ocular Motor] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 16 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

  16. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Limb Motor)

    Change from the baseline in the score of [Limb Motor] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 16 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  17. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Limb Motor)

    Change from the baseline in the score of [Limb Motor] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 16 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

  18. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Midline/Gait)

    Change from the baseline in the score of [Midline/Gait] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 12 weeks (3 months) of investigational product administration. The possible total scores range from 0 to 20 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  19. Change From the Baseline in the Score of Each Domain of the PSP-rating Scale (Midline/Gait)

    Change from the baseline in the score of [Midline/Gait] domain of the PSP-rating scale(Progressive Supranuclear Palsy Rating Scale) after 24 weeks (6 months) of investigational product administration. The possible total scores range from 0 to 20 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

  20. Change From the Baseline in the Score of Each Item of the PSP-rating Scale(Item 12_Dysarthria)

    Change from the baseline in the score of each item [Item 12_Dysarthria] of the PSP-rating scale after 12 weeks (3 months) of investigational product administration. Only the analysis result for Item no.12 out of a total of 28 items is described. The possible total scores range from 0 to 4 with a higher score indicating severely impaired cognitive function.

    Measured: 12 weeks(3 months)

  21. Change From the Baseline in the Score of Each Item of the PSP-rating Scale(Item 12_Dysarthria)

    Change from the baseline in the score of each item [Item 12_Dysarthria] of the PSP-rating scale after 24 weeks (6 months) of investigational product administration. Only the analysis result for Item no.12 out of a total of 28 items is described. The possible total scores range from 0 to 4 with a higher score indicating severely impaired cognitive function.

    Measured: 24 weeks(6 months)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Apr 2023
  2. Study start14 Jun 2023
  3. Primary completion11 Oct 2024
  4. Study completion11 Oct 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
78 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05819658
Sponsor's protocol ID
GV1001-PSP-CL2-011
Status last verified
Dec 2025
First submitted
6 Apr 2023
Last updated
10 Feb 2026
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing GV1001 0.56mg and GV1001 1.12mg in people with Progressive Supranuclear Palsy, run by GemVax & Kael at 5 sites in South Korea.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 10 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 10 Feb 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change From the Baseline in the Total Score of PSP-rating Scale (time frame: 24 weeks(6 months)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Feb 2026.

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