NCT04083833

A Phase 1, Single Ascending Dose, Randomized, Double-Blind, Placebo and Positive Controlled Study to Evaluate the Cardiovascular Effect of Tetrodotoxin in Healthy Adult Subjects

Completed Phase 1 Last updated 10 September 2019

What this trial tests

Phase 1 trial testing Tetrodotoxin in TQT Study in 25 participants. Completed in 24 March 2018.

Timeline

7 February 2018

Primary endpoint
24 March 2018

24 March 2018

Quick facts

Lead sponsor	Wex Pharmaceuticals Inc.
Phase	Phase 1
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	quadruple
Primary purpose	basic science
Enrollment	25
Start date	7 February 2018
Primary completion	24 March 2018
Estimated completion	24 March 2018
Sites	1 location across United States

Drugs / interventions tested

• Tetrodotoxin — full drug profile →
• Placebos — full drug profile →

Conditions studied

• TQT Study — all drugs for TQT Study →

Sponsor

Wex Pharmaceuticals Inc.

Who can join

Adults 18 to 55, any sex, with TQT Study. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

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:

1. To determine if a single SC administration of TTX at various dose levels has an effect on other important electrocardiogram (ECG) parameters in healthy adult subjects.
2. To demonstrate sensitivity of this QTc assay using moxifloxacin as a positive control.
3. To confirm plasma pharmacokinetic (PK) of a single SC administration of TTX at various dose levels when administered to healthy adult subjects.
4. To determine the overall safety and tolerability of a single SC administration of TTX at various dose levels when administered to healthy adult subjects.

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:

* Tetrodotoxin matching placebo a sterile 0.9% sodium chloride injection or normal saline for injection, Lot No. 84-093-DK
* 400 mg Avelox® (moxifloxacin hydrochloride) tablets, Lot No. BXHJ1S1
* Moxifloxacin matching placebo film-coated tablets, Id.-No.: K15372, Batch No.: C1606007

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.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

1. Safety, Tolerability, Pharmacokinetics, and Concentration-QTc Analysis of Tetrodotoxin: A Randomized, Dose Escalation Study in Healthy Adults.
   Kavoosi M, O'Reilly TE, Kavoosi M, Chai P, et al · · 2020 · cited 10× · PMID 32784930 · DOI 10.3390/toxins12080511
2. Potential role of marine species-derived bioactive agents in the management of SARS-CoV-2 infection.
   Asif M, Saleem M, Yaseen HS, Yehya AH, et al · · 2021 · cited 5× · PMID 34689597 · DOI 10.2217/fmb-2021-0024