Status and phase
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About
To determine if a single subcutaneous (SC) administration of TTX at various dose levels has an effect on the QT/QTc intervals when assessing concentration QT (C-QT) relationship (i.e., QT/QTc intervals prolongation in relation to plasma levels of TTX) in healthy adult subjects.
Secondary:
Test Product, Dose, Duration, Mode of Administration, and Batch Number:
The test product was 30 µg/mL tetrodotoxin (TTX) for injection, Lot No. F141124-001.
Subjects were also administered:
Treatments were as follows:
Treatment Arm (n = 9)
Treatment A:
(Period 1) A single TTX dose of 15 μg (0.5 mL of TTX 30 μg/mL injection solution) administered as 1 SC injection with a single oral moxifloxacin matching placebo (1 x placebo tablet)
Treatment B:
(Period 2) A single TTX dose of 30 μg (1 mL of TTX 30 μg/mL injection solution) administered as 1 SC injection with a single oral moxifloxacin matching placebo (1 x placebo tablet)
Treatment C:
(Period 3) A single TTX dose of 45 μg (1.5 mL of TTX 30 μg/mL injection solution) administered as 2 SC injections with a single oral moxifloxacin matching placebo (1 x placebo tablet)
Subjects randomized to the Control Arm were further randomized to receive 1 of 2 treatment sequences (Treatment Sequence DEF [n = 8] and Treatment Sequence GHI [n = 8]):
Control Arm (n = 16)
Treatment D:
(Period 1) A single matching-TTX placebo (0.5 mL of placebo injection solution) administered as 1 SC injection with a single oral moxifloxacin matching placebo (1 x placebo tablet)
Treatment E:
(Period 2) A single matching-TTX placebo (1 mL of placebo injection solution) administered as 1 SC injection with a single oral 400 mg moxifloxacin (1 x 400 mg tablet)
Treatment F:
(Period 3) A single matching-TTX placebo (1.5 mL of placebo injection solution) administered as 2 SC injections with a single oral moxifloxacin matching placebo (1 x placebo tablet)
Treatment G:
(Period 1) A single matching-TTX placebo (0.5 mL of placebo injection solution) administered as 1 SC injection with a single oral 400 mg moxifloxacin (1 x 400 mg tablet)
Treatment H:
(Period 2) A single matching-TTX placebo (1 mL of placebo injection solution) administered as 1 SC injection with a single oral moxifloxacin matching placebo (1 x placebo tablet)
Treatment I:
(Period 3) A single matching-TTX placebo (1.5 mL of placebo injection solution) administered as 2 SC injections with a single oral 400 mg moxifloxacin (1 x 400 mg tablet) All oral study drugs were administered with approximately 240 mL of water.
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
Healthy, adult, male or female 18 55 years of age, inclusive, at screening.
Continuous non smoker who has not used nicotine containing products for at least 3 months prior to the first dose and throughout the study.
Body mass index (BMI) ≥ 18.5 and ≤ 32.0 kg/m2 at screening.
Medically healthy with no clinically significant medical history, physical examination, neurologic examinations, laboratory profiles, vital signs, or ECGs, as deemed by the PI or designee.
For a female of childbearing potential: either be sexually inactive (abstinent) for 14 days prior to the first dose and throughout the study or be using one of the following acceptable birth control methods:
A female subject who claims to be sexually inactive, but becomes sexually active during the course of the study must agree to use a physical barrier method (e.g., condom, diaphragm) with spermicide from the time of the start of sexual activity and throughout the study.
In addition, female subjects of childbearing potential will be advised to remain sexually inactive or to keep the same birth control method for at least 28 days following the last dose.
For a female of non childbearing potential: must have undergone one of the following sterilization procedures at least 6 months prior to the first dose:
A non vasectomized, male subject must agree to use a condom with spermicide or abstain from sexual intercourse during the study until 90 days beyond the last dose of study drug. (No restrictions are required for a vasectomized male provided his vasectomy has been performed 4 months or more prior to first dose of study drug. A male who has been vasectomized less than 4 months prior to study first dose must follow the same restrictions as a non vasectomized male).
If male, must agree not to donate sperm from the first dose until 90 days after last dosing.
No clinically significant history or presence of ECG findings as judged by the PI at screening and check-in of Period 1, including each criterion as listed below:
Normal renal function (creatinine clearance from 80 to 180 mL/minute per Cockcroft-Gault equation; 24-hour urinary creatinine collection may be used for borderline cases).
PEF of ≥ 80% per handheld meter and oxygen saturation of ≥ 95% by pulse oximetry.
Understands the study procedures in the informed consent form (ICF), and be willing and able to comply with the protocol.
Exclusion criteria
Subject is mentally or legally incapacitated or has significant emotional problems at the time of the screening visit or expected during the conduct of the study.
History or presence of clinically significant medical or psychiatric condition or disease in the opinion of the PI or designee.
History of any illness that, in the opinion of the PI or designee, might confound the results of the study or poses an additional risk to the subject by their participation in the study.
History or presence of alcoholism or drug abuse within the past 2 years prior to the first dose.
History or presence of:
Any acute or chronic pain conditions requiring ongoing treatment or limiting daily activities.
History of fainting upon blood sampling or needle puncture.
Findings during the screening neurological examination that could interfere with or preclude neurological assessments during the study, in the opinion of the PI or designee.
History or presence of neurologic or neuromuscular disease.
Allergy to band aids, adhesive dressing or medical tape.
History or presence of hypersensitivity or idiosyncratic reaction to the study drug(s), related compounds, or fish.
History of anaphylaxis to a medication, dietary item, or environment exposures (including bee stings).
Female subjects with a positive pregnancy test or lactating.
Positive urine drug, cotinine, or alcohol results at screening or check in of Period 1.
Positive results at screening for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg) or hepatitis C virus (HCV).
Seated blood pressure is less than 90/40 mmHg or greater than 140/90 mmHg at screening.
Seated heart rate is lower than 50 bpm or higher than 99 bpm at screening.
Unable to refrain from or anticipates the use of any drug, including prescription and non prescription medications, herbal remedies, or vitamin supplements beginning 14 days prior to the first dose and throughout the study.
Has been on a diet incompatible with the on study diet, in the opinion of the PI or designee, within the 30 days prior to the first dose and throughout the study.
Donation of blood or significant blood loss within 56 days prior to the first dose.
Plasma donation within 7 days prior to the first dose.
Participation in another clinical study within 30 days prior to the first dose. The 30 day window will be derived from the date of the last blood collection or dosing, whichever is later, in the previous study to Day 1 of Period 1 of the current study.
Primary purpose
Allocation
Interventional model
Masking
25 participants in 2 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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