Company: MDCXW
Filing Date: 2025-11-19
Form Type: S-1
Source: 0001062993-25-016962
Chunk: 123

Company: Medicus Pharma Ltd.
Filing Date: 2025-11-19
Form: S-1
Chunk 123
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W rabbits.

A total of 15 male NZW rabbits were randomized into one of five treatment groups, including a vehicle control (Group 1), three dose levels of test article (Groups 2-4), and a reference control (Group 5). This study was conducted in two phases as follows:

Pyrogenicity Phase: Pyrogenicity of the test article was evaluated at dose levels of 50, 100 and 200 μg (0.3 ml/animal). On dosing phase Day 1, the vehicle or test article formulations were administered via SQ injection to the scapular area of each animal (Groups 1-4). Group 5 animals were intravenously administered lipopolysaccharide (LPS, 0.01μg/ml) at 0.04 ml/kg and 4 ml/kg within ~4 hours. Body temperatures were recorded at baseline, and at ~30-minute intervals for the first 4 hours post-dose, and at 8 and 24 hours post-dose administration.

All animals had a normal body temperature (99.2-103.4 ºF/37.3-39.7 ºC) at baseline. After dose administration, all vehicle control and test animals body temperature appeared normal (ranged from 99.1 ºF/37.3 ºC to 103.9 ºF/39.9 ºC) within the observation period up to 24 hours, except for two measurements at 8 hour respectively for one vehicle animal (104.1°F /40.1°C) and one high dose animal (104.9°F /40.5°C). These two measurements were slightly above the normal range and considered an incidental finding. For the reference control (Group 5), animal body temperatures were above normal (104.8-107.7°F/40.4-42.1°C) for all animals during the first 4 hours after intravenously administered lipopolysaccharide (LPS, 0.01μg/ml) at 0.04 μg/kg.

Dermal Irritation Phase: Groups 1-4, all animals were dosed topically via 2 filter paper patches (2.5 cm x 2.5 cm) on naïve dorsal skin sites with a saline control patch (saturated with ~0.2 ml saline) and a 0.3 ml of vehicle (Group 1) or test formulation (Groups