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Healthy VolunteersPhase 1NCT06617546

SAD and MAD Study of FTX-101 in Healthy Male Subjects

A Phase 1 study testing FTX-101 in people with Healthy Volunteers, run by Find Therapeutics at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This is a Phase 1, first-in-human (FIH), single-center, randomized, double-blind, placebo-controlled study in healthy male subjects. The study will include the following 2 parts: Part A: Single Ascending Dose (SAD) in healthy male subjects Part B: Multiple Ascending Dose (MAD) in healthy male subjects Read more about this study

Who is it for?
Ages 18 to 59 years, men onlyHealthy volunteers can take part
Conditions the study is for
Healthy Volunteers
What is being tested?
FTX-101
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
49 participants
Where
1 siteUnited States
Study dates
14 Oct 2024to 17 Apr 2025
Phase
Phase 1
Are there results?
None posted in the registry

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 18 to 59 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Willingness to comply with all study procedures and availability for the duration of the study
  • Healthy adult male
  • Aged at least 18 years but not older than 59 years
  • Body mass index (BMI) within 18.5 kg/m^2 to 32.0 kg/m^2, inclusively
  • Non- or ex-smoker
  • Have no clinically significant diseases captured in the medical history or evidence of clinically significant findings on the physical examination (including vital signs) and/or ECG.

Who cannot join

  • Supine or semi-supine pulse rate less than 45 beats per minute (bpm) or more than 100 bpm
  • Supine or semi-supine blood pressure below 90/50 mmHg
  • Supine or semi-supine blood pressure higher than 150/95 mmHg
  • History of significant hypersensitivity to FTX-101 or any related products (including excipients of the formulations) as well as severe hypersensitivity reactions (like angioedema) to any drugs
  • Presence or history of significant gastrointestinal, liver or kidney disease, or surgery that may affect drug bioavailability
  • History of significant cardiovascular, pulmonary, hematologic, neurological, psychiatric, endocrine, immunologic or dermatologic disease
Show all 21Show fewer
  • Showing suicidal tendency from 6 months prior to screening
  • Presence of out-of-range cardiac intervals at screening defined as:
  • PR < 110 msec, PR > 200 msec
  • QRS < 60 msec, QRS >110 msec)
  • QT Interval Corrected for Heart Rate using Fridericia's Correction Formula (QTcF): • > 450 msec
  • History of additional risk factors for torsade's de pointes
  • Use of concomitant medications that prolong the QT/ corrected QT (QTc) interval
  • Current use (in the last 6 months) of alcohol (> 3 units of alcohol per day, intake of excessive alcohol, acute or chronic)
  • Any history of substance or alcohol use disorder within the past 2 years and/or current maintenance therapy (within the past 2 years) for treatment of substance use disorder
  • Use of any prescription drugs in the 28 days or 5 half-lives, whichever is longer, prior to the first study treatment administration, that in the opinion of an investigator would put into question the status of the participant as healthy
  • Use of St. John's wort in the 28 days prior to the first study treatment administration
  • Positive screening results to HIV Ag/Ab combo, hepatitis B surface Ag or hepatitis C virus tests
  • Intake of an investigational product (IP) in the 28 days prior to the first study treatment administration or within 5 times the elimination half-life of the IP, whichever is longer
  • Donation of plasma in the 7 days prior to the first study treatment administration
  • Donation of 1 unit of blood to American Red Cross or equivalent organization or donation of over 500 mL of blood in the 56 days prior to the first study treatment administration

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Altasciences Clinical Kansas, Inc.

    Overland Park, Kansas, 66212

Other trials in United States

About this study

Official title: A Randomized, Double-Blind, Placebo-Controlled, First-in-Human Study to Assess Safety, Tolerability, Pharmacokinetics, and Immunogenicity of Single and Multiple Ascending Doses of FTX-101 After Subcutaneous Injection of FTX-101 in Healthy Male Subjects

This is a Phase 1, first-in-human (FIH), single-center, randomized, double-blind, placebo-controlled study in healthy male subjects. The study will include the following 2 parts:

  • Part A: Single Ascending Dose (SAD) in healthy male subjects
  • Part B: Multiple Ascending Dose (MAD) in healthy male subjects
Read the detailed description

Study Rationale:

FTX-101 is a first-in-class, synthetic peptide with a novel mechanism of action designed to promote the self-repair of myelin. FTX-101 is a highly selective modulator of the PlexinA1/Neuropilin 1 receptor system and displays no significant activity on any other target. FTX-101 interferes with the heterodimerization of the coreceptor system and, ultimately, with the activation of second messenger signaling pathways shown to inhibit both the differentiation and migration of oligodendrocyte precursor cells (OPCs) and oligodendrocytes (OLs). Through this mechanism, FTX-101 disinhibits both the differentiation of OPCs to OLs and migration of OPCs into lesions, favorably promoting the remyelination process. The study is designed to evaluate the safety, tolerability and pharmacokinetic profile of single ascending doses and multiple ascending doses of FTX-101 subcutaneous injection in healthy male subjects. The study will characterize the pharmacokinetics of FTX-101 following SAD and MAD SC injection of FTX-101. The study will also evaluate the immunogenic potential of FTX-101 and will also explore the relationship between FTX-101 concentration and the change from baseline corrected QT interval.

Detailed Description:

This is a Phase 1, first-in-human (FIH), single-center, randomized, double-blind, placebo-controlled study in healthy male subjects. The study will include the following 2 parts:

  • Part A: SAD in healthy male subjects
  • Part B: MAD in healthy male subjects

Part A - SAD:

Part A consists of 5 planned cohorts (A1 to A5) of 8 healthy adult male subjects each. An additional SAD intermediate (lower) or equivalent dose cohort (A6) of 8 male subjects may be added at the discretion of the Sponsor. In each cohort, subjects will be randomized to receive a single subcutaneous (SC) dose (as 1, 2 or 4 injection[s]) of either FTX-101 or placebo in a 3:1 (FTX-101: placebo) ratio to have a total of 6 subjects receiving FTX-101 and 2 subjects receiving placebo.

Part B - MAD:

Part B consists of 3 planned cohorts (B1 to B3) of 8 healthy adult male subjects each. An additional MAD cohort (B4) of 8 male subjects may be added at the discretion of the Sponsor depending on emerging safety and plasma PK data from the previous cohort(s). The proposed dosing regimen (dose level and frequency) for the first cohort (B1) in Part B (MAD) will be based on available safety, tolerability, and PK data from Part A (SAD). The dosing regimens for each subsequent cohort in Part B will be determined based on the available blinded safety, tolerability, and PK data from Part A and any previous cohorts in Part B. In each cohort, subjects will be randomized to receive multiple SC doses of either FTX-101 or placebo in a 3:1 (FTX-101: placebo) ratio to have a total of 6 subjects receiving FTX-101 and 2 subjects receiving placebo.

Being tested
FTX-101, Placebo
Keywords
remyelination, myelin, plexin A1, neuropilin 1

What participants receive

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

  • FTX-101Drug

    Lyophilized powder for subcutaneous injection

  • PlaceboDrug

    Lyophilized powder for subcutaneous injection

Study groups in NCT06617546
Study groupRoleWhat they receive
Part A (SAD): Cohort A1ExperimentalSingle dose (as 1, 2 or 4 SC injection[s]) of FTX-101 or placebo in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part A (SAD): Cohort A2ExperimentalSingle dose (as 1, 2 or 4 SC injection[s]) of FTX-101 or placebo in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part A (SAD): Cohort A3ExperimentalSingle dose (as 1, 2 or 4 SC injection[s]) of FTX-101 or placebo in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part A (SAD): Cohort A4ExperimentalSingle dose (as 1, 2 or 4 SC injection[s]) of FTX-101 or placebo in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part A (SAD): Cohort A5ExperimentalSingle dose (as 1, 2 or 4 SC injection[s]) of FTX-101 or placebo in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part A (SAD): Cohort A6ExperimentalOptional cohort to receive additional single ascending intermediate (lower) or equivalent dose (as 1, 2 or 4 SC injection[s]) of FTX-101 or placebo in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part B (MAD): Cohort B1ExperimentalOnce daily dose (as 1 or 2 SC injection[s]) of FTX-101 or placebo for 14 days in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part B (MAD): Cohort B2ExperimentalOnce daily dose (as 1 or 2 SC injection[s]) of FTX-101 or placebo for 14 days in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part B (MAD): Cohort B3ExperimentalOnce daily dose (as 1 or 2 SC injection[s]) of FTX-101 or placebo for 14 days in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo
Part B (MAD): Cohort B4ExperimentalOptional cohort to receive once daily dose (as 1 or 2 SC injection[s]) of FTX-101 or placebo for 14 days in a 3:1 ratio
Receives: Drug: FTX-101; Drug: Placebo

What is being measured

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

  1. Frequency of adverse events

    Frequency of AE will be collected through AE monitoring.

    Measured: Part A (SAD): Days -1-15; Part B (MAD): Days -1-28

  2. Severity of adverse events

    Severity of AE will be collected through AE monitoring. AEs will be graded per the current National Cancer Institute's Common Terminology Criteria for Adverse Events.

    Measured: Part A (SAD): Days -1-15; Part B (MAD): Days -1-28

  3. Number of patients with a change in general biochemistry, hematology, coagulation and urinalysis clinical laboratory parameters

    Frequency of abnormal general biochemistry, hematology, coagulation, and urinalysis clinical laboratory values.

    Measured: Part A (SAD): Days -1, 4 and 15; Part B (MAD): Days -1, 5, 9, 13, 17, 28

  4. Number of patients with a change in vital signs

    Frequency of abnormal vital sign measurements.

    Measured: Part A (SAD): Days -1-4 and 15; Part B (MAD): Days -1-17 and 28

  5. Number of patients with a change in 12-lead safety electrocardiogram (ECG)

    Frequency of abnormal 12-lead ECG parameters including PR, RR, QRS, QT and QTcF.

    Measured: Part A (SAD): Days -1-2, and 15; Part B (MAD): Days -1, 1, 3, 5, 7, 9, 11, 14, 28

  6. Number of patients with a change in physical examination findings

    Frequency of abnormal physical examination findings.

    Measured: Part A (SAD): Days -1-4, and 15; Part B (MAD): Days -1-17, 28

  7. Number of patients with a change in neurological examination findings

    Frequency of abnormal neurological examination findings.

    Measured: Part A (SAD): Days 1, 2, 4, and 15; Part B (MAD): Days 1, 2, 5, 9, 14, 15, 17, and 29

  8. Frequency of injection site reactions

    Evaluation of pain, tenderness, erythema/redness, swelling/induration or itching at the injection site will be rated mild (Grade 1), moderate (Grade 2), Severe (Grade 3), or potentially life-threatening (Grade 4)

    Measured: Part A (SAD): Days 1, 2, and 15; Part B (MAD): Days 1-14, and 28

  9. Change in Columbia Suicide Severity Rating Scale (C-SSRS) score

    Frequency of positive results for suicidality. The C-SSRS is a questionnaire designed for the assessment of suicidal ideation and behavior in adolescents and adults.

    Measured: Part A (SAD): Days -1-4, and 15; Part B (MAD:) Days -1-17, and 28

Secondary outcomes (31)
  1. Plasma Cmax

    Peak or maximum observed concentration

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Days 1-2

  2. Plasma Tmax

    Time of maximum observed concentration. If the maximum observed concentration is not unique, then the first maximum is used

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Days 1-2

  3. Plasma AUC0-last

    Area under the concentration-time curve from dosing to the time of last quantifiable concentration (Tlast)

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Days 1-2

  4. Plasma AUC0-∞ (Part A)

    Area under the concentration time curve extrapolated to infinity, calculated as AUClast + Clast/λZ, where Clast is the last quantifiable concentration at time Tlast

    Measured: Part A (SAD): Days 1-4

  5. Plasma AUC0-last/∞ (Part A)

    Relative percentage of AUC0-last with respect to AUC0-∞

    Measured: Part A (SAD): Days 1-4

  6. Plasma λz

    Apparent elimination rate constant, estimated by linear regression of the terminal linear portion of the log concentration versus the time curve

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Day 14-17

  7. Plasma CL/F (Part A)

    Apparent clearance, calculated as Dose/AUC0-∞

    Measured: Part A (SAD): Days 1-4

  8. Plasma Vz/F (Part A)

    Apparent volume of distribution, calculated as Dose/ λZ * AUC0-∞

    Measured: Part A (SAD): Days 1-4

  9. Plasma Thalf (Part A)

    Terminal elimination half-life, calculated as ln (2)/λZ

    Measured: Part A (SAD): Days 1-4

  10. Plasma Cmax/D (Part A)

    Dose-normalized Cmax, calculated as Cmax/dose

    Measured: Part A (SAD): Days 1-4

  11. Plasma AUC0-last/D (Part A)

    Dose-normalized AUC0-last, calculated as AUC0-last/dose

    Measured: Part A (SAD): Days 1-4

  12. Plasma AUC0-∞/D (Part A)

    Dose normalized AUC 0-∞, calculated as AUC0-∞/dose

    Measured: Part A (SAD): Days 1-4

  13. Plasma AUMC0-last (Part A)

    Area under the moment curve (AUMC) from the time of dosing to the last measurable (positive) concentration

    Measured: Part A (SAD): Days 1-4

  14. Plasma AUMC∞ (Part A)

    AUMC extrapolated to infinity, based on the last observed concentration

    Measured: Part A (SAD): Days 1-4

  15. Plasma AUC0-24 (Part B MAD)

    Area under the concentration-time curve over the dosing interval

    Measured: Days 1-2

  16. Plasma Ctrough (Part B MAD)

    Plasma trough observed concentrations, for Day 11 to Day 13

    Measured: Days 11 to 13

  17. Plasma Cmin,ss (Part B MAD)

    Minimum observed concentration at steady state

    Measured: Days 14-17

  18. Plasma Cmax,ss (Part B MAD)

    Peak or maximum observed concentration at steady state

    Measured: Days 14-17

  19. Plasma AUC0-τ (Part B MAD)

    Area under the concentration-time curve over the dosing interval

    Measured: Days 14-17

  20. Plasma Tmax,ss (Part B MAD)

    Time of maximum observed concentration at steady state

    Measured: Days 14-17

  21. Plasma Thalf (Part B MAD)

    Terminal elimination half-life, calculated as ln(2)/λZ

    Measured: Days 14-17

  22. Plasma Cav (Part B MAD)

    Average steady-state plasma drug concentration calculated as AUC0-τ/τ

    Measured: Days 14-17

  23. Plasma Fluctuation (Part B MAD)

    The range of steady-state concentrations divided by the average concentration (Day 14 only)

    Measured: Days 14-17

  24. Plasma Swing (Part B MAD)

    Degree of swing over a dosing interval, after the last dose of a multiple-dose regimen expressed as a percentage. Calculated as 100*(Cmax-Cmin/Cmin).

    Measured: Days 14-17

  25. Plasma Rac(Cmax) (Part B MAD)

    Accumulation ratio evaluated by comparing Day 14 Cmax,ss to Day 1 Cmax

    Measured: Days 1-2, and 14-17

  26. Plasma Rac(AUC) (Part B MAD)

    Accumulation ratio evaluated by comparing Day 14 AUC0-τ to Day 1 AUC0-24

    Measured: Days 1-2, and 14-17

  27. Urine Ae(0-last)

    Cumulative amount excreted over all time intervals (0 to Tlast), calculated as the sum of all amounts excreted from each interval (t1-t2)

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Days 1, 2, and 14-17

  28. Urine fe

    Fraction of unchanged drug excreted in urine during the time interval (expressed in %, calculated)

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Days 1, 2, and 14-17

  29. Urine CLR

    Renal Clearance (Ae(0-last)/ AUC0-last)

    Measured: Part A (SAD): Days 1-4; Part B (MAD): Days 1, 2, and 14-17

  30. Plasma CLss/F (Part B MAD)

    Apparent clearance at steady state, calculated as Dose/AUC0-τ

    Measured: Part B (MAD): Days 14-17

  31. Plasma Vz/F (Part B MAD)

    Apparent volume of distribution at steady state, calculated as Dose/ λZ * AUC0-τ

    Measured: Part B (MAD): Days 14-17

Timeline

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

  1. First posted27 Sep 2024
  2. Study start14 Oct 2024
  3. Primary completion17 Apr 2025
  4. Study completion17 Apr 2025

Why it stopped: Study's goals have been achieved based on a preliminary analysis of available pharmacokinetic and safety data, which demonstrate that sufficient information has been obtained.

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 1
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Sequential
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
49 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06617546
Sponsor's protocol ID
FTX0101
Status last verified
Jun 2025
First submitted
25 Sep 2024
Last updated
18 Jun 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing FTX-101 in people with Healthy Volunteers, run by Find Therapeutics at 1 site in United States.

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 6 inclusion and 21 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: stopped early, as of the sponsor's last update on 18 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. 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. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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

Are results available for this study?

The study was stopped early (reason given: Study's goals have been achieved based on a preliminary analysis of available pharmacokinetic and safety data, which demonstrate that sufficient information has been obtained.). Results are not available in the source record.

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?

Frequency of adverse events (time frame: Part A (SAD): Days -1-15; Part B (MAD): Days -1-28). The study lists 9 primary outcomes in all. 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 18 Jun 2025.

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