ClinicalTrials.gg
Active, not recruitingNCT05344989Updated Jun 15, 2023

A First-in-Human Study to Assess Single Doses of APNmAb005 in Healthy Participants

A Phase 1 interventional study of APNmAb005 and Placebo in Healthy Volunteers, Tauopathies and Alzheimer Disease, sponsored by APRINOIA Therapeutics, LLC. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-06-15.

Primary conditionAlzheimer DiseaseRegistry: TauopathiesReclassifiedWhy we changed it
Registry
Tauopathies — the first condition term the registry derived for this study.
ClinicalTrials.gg
Alzheimer Disease
Why
  1. The study's listed conditions name Alzheimer Disease, a narrower term within Tauopathies.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by APRINOIA Therapeutics, LLC · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Mar 2024, 2 years 8 months ago, but the record still lists the study as active, not recruiting.
Phase
Phase 1
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This is a Phase 1, first-in-human (FIH), double-blinded, placebo-controlled study where healthy subjects are randomly allocated to receive APNmAb005 or placebo. Approximately 5 dosing groups (cohorts) are planned with 8 subjects (randomized to 6 active: 2 placebo) per cohort. the starting dose of APNmAb005 is 5 mg/kg and the anticipated doses for subsequent cohorts are 10, 25, 50 and 70 mg/kg. A Safety Review Team (SRT) will review data on an ongoing basis throughout the study and before progression to the next dose level cohort.

Subjects will receive a single dose of either APNmAb005 or placebo administered as a single IV infusion on Day 1 of the study and will remain in the study center until Day 3 (48 hours after dosing). They will return to the study center for 7 outpatient visits. The duration of the study, excluding screening, is approximately 71 days.

02

Conditions studied

  • Healthy Volunteers
  • Tauopathies
  • Alzheimer Disease

Browse trials for

Keywords

  • Healthy Volunteers
  • Alzheimer's Disease
  • Alzheimer Disease
  • AD
  • Tauopathies
  • Tau
03

In context

Alzheimer Disease Reclassified

3,965 studies on the registry are indexed under Alzheimer Disease; 926 are open to participants now.

This study's planned enrollment of 40 is below the median of 70 across 3,019 interventional studies indexed under Alzheimer Disease.

Browse Alzheimer Disease studies →

Lead sponsor

APRINOIA Therapeutics, LLC is the lead sponsor of 2 studies on the registry; none are open to participants now.

Compared within Alzheimer Disease, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Tauopathies. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • (BMI) of 18.5 to 32 kg/m² inclusive, at screening.
  • Female subjects of must use an acceptable method of from screening until at least 90 days after study drug dosing; OR be surgically sterile; OR be . All female subjects must have a negative pregnancy test at screening and before the first dose of the study drug. Female subjects must also agree to refrain from egg donation during the study and for at least 90 days after study drug dosing.
  • Male subjects must agree to use a condom when sexually active with a female partner of childbearing potential during the study and for at least 90 days after study drug dosing (or be surgically sterile); OR agree to practice abstinence during the study and for at least 90 days after study drug dosing. Male subjects must also agree to refrain from sperm donation during the study and for at least 90 days after study drug dosing.
  • Agree to comply with all protocol requirements.
  • Provide written .

Exclusion criteria

Exclusion Criteria:

  • Unable or unwilling to undergo venipuncture or tolerate venous access, or is unable or unwilling to undergo lumbar puncture.
  • Has any significant acute or chronic medical illness that would impact the subject's ability to complete all study requirements or impact assessment of study data; or subject as had a illness within 30 days prior to study drug dosing.
  • Any medical condition or documented history that is a to lumbar puncture (e.g. bleeding disorder, spinal deformity).
  • Positive COVID-19 molecular diagnostic test result at screening or prior to study drug dosing; or subject has known or suspected consequence from prior COVID-19 infection.
  • History of cardiac, endocrine, gastrointestinal, hematologic, hepatic, immunologic, metabolic, urologic, pulmonary, neurologic, dermatologic, psychiatric, renal or oncogenic (with the exception of resected skin basal cell carcinoma) disease within 5 years prior to screening).

NOTE: Subjects with treated stable psychiatric conditions (e.g. anxiety, depression) are not allowed.

  • Clinically significant neurological or psychiatric disorder.
  • Major surgery, as determined by investigator, within 4 weeks prior to study drug dosing.
  • Systolic blood pressure >140 mm Hg and/or diastolic blood pressure >90 mm Hg.
  • Received any vaccine or used any prescription or over-the-counter medications (except paracetamol [up to 2 g per day]), including herbal or nutritional supplements, within 14 days prior to study drug dosing.
  • Consumed caffeine- or xanthine-containing products within 48 hours prior to study drug dosing.
  • Subject is a smoker or has regularly used nicotine or nicotine-containing products (e.g. snuff, nicotine patch, nicotine chewing gum, mock cigarettes, or inhalers) within 3 months prior to study drug dosing.
  • Subject is involved in vigorous or strenuous physical activity or contact sports within 24 hours prior to study drug dosing.
  • Subject has donated blood or blood products >450 mL within 3 months prior to study drug dosing.

Other protocol-defined inclusion/exclusion criteria may apply.

Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
40 participants (estimated)

Study arms

  • Active comparator
    APNmAb005 (5mg/kg) vs Placebo

    Single Ascending Dose (SAD)

    Drug: APNmAb005 · Drug: Placebo

  • Active comparator
    APNmAb005 (10 mg/kg) vs Placebo

    Single Ascending Dose (SAD)

    Drug: APNmAb005 · Drug: Placebo

  • Active comparator
    APNmAb005 (25 mg/kg) vs Placebo

    Single Ascending Dose (SAD)

    Drug: APNmAb005 · Drug: Placebo

  • Active comparator
    APNmAb005 (50 mg/kg) vs Placebo

    Single Ascending Dose (SAD)

    Drug: APNmAb005 · Drug: Placebo

  • Active comparator
    APNmAb005 (70 mg/kg) vs Placebo

    Single Ascending Dose (SAD)

    Drug: APNmAb005 · Drug: Placebo

Interventions

  • DrugAPNmAb005

    Administered by IV infusion

  • DrugPlacebo

    Administered by IV infusion

06

What researchers measure

Primary outcomes

  1. Number of subjects with Adverse Events (AEs)

    Defined as any untoward medical occurrence associated with the use of a drug in humans, whether or not considered drug related. Data collected by subject observations and data collected on AE page of electronic Case Report Form (eCRF), or other documents relevant to subject safety.

    Time frame: Day 70

  2. Number of subjects with Treatment-emergent AEs (TEAEs)

    Defined as any event not present before exposure to study drug or any event already present that worsens in intensity or frequency after exposure. Data collected by subject observations and data collected on AE page of electronic Case Report Form (eCRF), or other documents relevant to subject safety.

    Time frame: Day 70

  3. Number of subjects with Serious Adverse Events (SAEs)

    Defined as any AE for which there is a reasonable possibility that the study drug caused the AE. Data collected by subject observations and data collected on AE page of electronic Case Report Form (eCRF), or other documents relevant to subject safety.

    Time frame: Day 70

  4. Number of subjects with AEs resulting in Study Discontinuation

    Data collected by subject observations and data collected on AE page of electronic Case Report Form (eCRF), or other documents relevant to subject safety.

    Time frame: Day 70

  5. Number of participants with Vital Sign Abnormalities

    Measured by systolic and diastolic blood pressures, pulse rate, respiratory rate and body temperature.

    Time frame: Day 70

  6. Number of participants with Electrocardiogram (ECG) Abnormalities

    Measured by 12-lead ECG

    Time frame: Day 70

  7. Number of participants with Clinical Laboratory Abnormalities

    Measured by hematology, coagulation, serum chemistry and urinalysis.

    Time frame: Day 70

Secondary outcomes

  1. AUC0-t of APNmAb005 in plasma

    Area under the curve from time zero to last quantifiable concentration of APNmAb005. Measured by blood sample analysis.

    Time frame: Thru Day 70

  2. AUC0-t of APNmAb005 in CSF

    Area under the curve from time zero to last quantifiable concentration of APNmAb005. Measured by cerebrospinal fluid (CSF) sample analysis.

    Time frame: Thru Day 14

  3. Cmax of APNmAb005 in blood

    Maximum observed plasma concentration of APNmAb005. Measured by blood sample analysis

    Time frame: Thru Day 70

  4. Cmax of APNmAb005 in CSF

    Maximum observed plasma concentration of APNmAb005. Measured by cerebrospinal fluid (CSF) sample analysis.

    Time frame: Thru Day 14

  5. Tmax of APNmAb005 in blood

    Time to maximum observed plasma concentration following APNmAb005 administration. Measured by blood sample analysis

    Time frame: Thru Day 70

  6. Tmax of APNmAb005 in CSF

    Time to maximum observed plasma concentration following APNmAb005 administration. Measured by cerebrospinal fluid (CSF) sample analysis.

    Time frame: Thru Day 14

  7. t1/2 of APNmAb005 in plasma

    Terminal phase half-life of APNmAb005. Measured by blood sample analysis

    Time frame: Thru Day 70

  8. t1/2 of APNmAb005 in CSF

    Terminal phase half-life of APNmAb005. Measured by cerebrospinal fluid (CSF) sample analysis

    Time frame: Thru Day 14

  9. CL of APNmAb005 in blood.

    Total body clearance of APNmAb005 from plasma. Measured by blood sample analysis

    Time frame: Thru Day 70

  10. CL of APNmAb005 in CSF

    Total body clearance of APNmAb005 from plasma. Measured by cerebrospinal fluid (CSF) sample analysis

    Time frame: Thru Day 14

  11. Vd of APNmAb005 in plasma

    Volume of distribution of APNmAb005. Measured by blood sample analysis

    Time frame: Thru Day 70

  12. Vd of APNmAb005 in CSF

    Volume of distribution of APNmAb005. Measured by cerebrospinal fluid (CSF) sample analysis

    Time frame: Thru Day 14

  13. Number of participants with ADA formation against APNmAb005

    Anti-drug antibody (ADA) presence measured by blood sample analysis

    Time frame: Thru Day 70

  14. Number of participants with no ADA formation against APNmAb005

    Anti-drug antibody (ADA) presence measured by blood sample analysis

    Time frame: Thru Day 70

  15. Mean Total tau concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Thru Day 70

  16. Mean change in Total tau concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Baseline and Day 70

  17. Mean Total tau concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Thru Day 14

  18. Mean change in Total tau concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Baseline and Day 14

  19. Mean p-tau 181 concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Thru Day 70

  20. Mean change in p-tau 181 concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Baseline and Day 70

  21. Mean p-tau 181 concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Thru Day 14

  22. Mean change in p-tau 181 concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Baseline and Day 14

  23. Mean p-tau 217 concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Thru Day 70

  24. Mean change in p-tau 217 concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Baseline and Day 70

  25. Mean p-tau 217 concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Thru Day 14

  26. Mean change in p-tau 217 concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Baseline and Day 14

  27. Mean p-tau 231 concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Thru Day 70

  28. Mean change in p-tau 231 concentration in plasma

    Pharmacodynamic biomarker concentration measured by blood sample analysis

    Time frame: Baseline and Day 70

  29. Mean p-tau 231 concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Thru Day 14

  30. Mean change in p-tau 231 concentration in CSF

    Pharmacodynamic biomarker concentration measured by CSF analysis

    Time frame: Baseline and Day 14

07

Study locations

1 site
  • Collaborative Neuroscience Research, LLC., 2600 Redondo Ave.
    Long Beach, California 90806, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2022 (actual). Primary completion is estimated for Mar 2024, 22 months after the start.

Of 160 industry-sponsored phase 1 interventional studies under Alzheimer Disease, half reached primary completion within 12 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 23. This study's planned 22 months is above that.

Counting every sponsor, half of 233 studies reached it within 18 months; a quarter within 7 and three quarters within 39.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 19, 2022
First posted
Apr 25, 2022
StartActual
May 6, 2022
Primary completionEst.
Mar 2024
CompletionEst.
Jul 2024
Last update
Jun 15, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 15, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05344989
Lead sponsor
APRINOIA Therapeutics, LLC
Responsible party
Sponsor
First posted
Apr 25, 2022
Start date
May 6, 2022
Primary completion
Mar 2024 (estimated)
Completion
Jul 2024 (estimated)
Last update
Jun 15, 2023

Study contacts

Steven Reynolds, DO
principal investigator · Collaborative Neuroscience Research, LLC

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Jun 2023. You cannot join it, but the record below documents what was studied.

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