ClinicalTrials.gg
CompletedNCT03472313Updated Oct 22, 2018

Assessment of the Biodistribution and Safety of [18F]MNI-958 in Healthy Subjects

A Phase 1 interventional study of [18F]MNI-958 in Healthy Volunteers, sponsored by Invicro. Completed at 1 site in United States. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-10-22.

Sponsored by Invicro · Phase 1, Interventional, and Other

From the registry’s dates

  • Primary completion was Apr 2018, 8 years 6 months ago, and no results have been posted to the registry.
  • Registered 4 months after the study started (first participant enrolled Nov 2017, registered Mar 2018).
Phase
Phase 1
Study type
Interventional
Enrollment
2
Allocation
Not applicable
Ages
18 Years to 55 Years
Sex
All
01

Study summary

The overall goal of this protocol is to evaluate the biodistribution of [18F]MNI-958 also known as APN-0000455 or PM-PBB3, as a tau targeted radiopharmaceutical.

Read the detailed description

The overall goal of this protocol is to evaluate the biodistribution of [18F]MNI-958 also known as APN-0000455 or PM-PBB3, as a tau targeted radiopharmaceutical. The specific objectives are:

  • To determine the radiation dosimetry of [18F]MNI-958
  • To assess the safety and tolerability of a single dose of [18F]MNI-958
02

Conditions studied

  • Healthy Volunteers

Keywords

  • HV
03

In context

Lead sponsor

Invicro is the lead sponsor of 14 studies on the registry; none are open to participants now.

Of its 13 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 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

  • The participant is 18 to 55 years old.
  • Written must be obtained before any assessment is performed.
  • Female subjects must be documented by medical records or physician's note to be either surgically sterile (by means of hysterectomy, bilateral oophorectomy, or tubal ligation) or for at least 1 year or, if they are of , must commit to use a barrier method for the duration of the study.
  • Male subjects and their partners of childbearing potential must commit to the use of two methods of contraception, one of which is a barrier method for male subjects for the study duration.
  • Male subjects must not donate sperm for the study duration.
  • Willing and able to cooperate with study procedures.

Exclusion criteria

Exclusion Criteria:

  • The subject has a abnormal laboratory value and/or clinically significant unstable medical or psychiatric illness.
  • The subject is a currently exposed to nicotine products or had regular nicotine exposure within a six month period, to be verified by urine cotinine screening.
  • History of drug or alcohol abuse within 12 months prior to screening, or evidence of such abuse as indicated by the laboratory assays conducted during the screening visit.
  • The subject has evidence of clinically significant gastrointestinal, cardiovascular, hepatic, renal, hematological, neoplastic, endocrine, neurological, immunodeficiency, pulmonary, or other disorder or disease.
  • The subject has any disorder that may interfere with drug absorption, distribution, metabolism, or excretion.
  • Prior participation in other research protocols or clinical care in the last year in addition to the radiation exposure expected from participation in this clinical study, such that radiation exposure does not exceed the effective dose of 50 mSv, equivalent with the acceptable annual limits established by the US Federal Guidelines.
  • Pregnancy or women who are breastfeeding, lactating or nursing.
  • Unsuitable veins for repeated venipuncture.
  • History of immunodeficiency diseases, including a positive test result.
  • A positive surface antigen (HBsAg) or antibody test result.
Terms in these criteria, in plain language(8)

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.

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.

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).

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.

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.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
2 participants (actual)

Study arms

  • Experimental
    Experimental: [18F]MNI-958

    To assess the safety and tolerability and to determine the radiation dosimetry of \[18F\]MNI-958.

    Drug: [18F]MNI-958

Interventions

  • Healthy Volunteers recruited for the study will undergo a single \[18F\]MNI-958 injection and PET scan.

06

What researchers measure

Primary outcomes

  1. Assessment of the Biodistribution and Safety of [18F]MNI-958 in Healthy Subjects

    Whole body tomographic PET images will be obtained for 6 healthy volunteers, and reviewed visually for assessment of body organ distribution of radioactivity. Volumes of Interest (VOI) will be placed on the visually identified source organs, and subsequently used for all the study PET frames. Activity within these volumes of interest is expressed in units of total radioactivity (kBq). Radioactivity will be corrected for body attenuation, but not for decay, and time activity data (TAC) generated for each source organ.

    Time frame: 2 months

07

Study locations

1 site
  • Invicro
    New Haven, Connecticut 06510, United States
08

References and documents

Related links

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Nov 2017 to primary completion in Apr 2018, 5 months.

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

Registered
Mar 14, 2018
First posted
Mar 21, 2018
StartActual
Nov 14, 2017
Primary completionActual
Apr 20, 2018
CompletionActual
Apr 20, 2018
Last update
Oct 22, 2018
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 Oct 22, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03472313
Lead sponsor
Invicro
Responsible party
Sponsor
First posted
Mar 21, 2018
Start date
Nov 14, 2017
Primary completion
Apr 20, 2018
Completion
Apr 20, 2018
Last update
Oct 22, 2018

Study contacts

Jennifer Madonia, PA-C
principal investigator · Invicro

Oversight

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

Not currently enrolling

This study is completed, as verified in Oct 2018. You cannot join it, but the record below documents what was studied.

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Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Studies of the drug tested here: MNI-958

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