Company: MDCXW
Filing Date: 2025-05-27
Form Type: S-1
Source: 0001062993-25-010394
Chunk: 106

Company: Medicus Pharma Ltd.
Filing Date: 2025-05-27
Form: S-1
Chunk 106
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AL") Test, quantifies endotoxins that are part of the cell wall of gram-negative bacteria. LAL testing is performed on samples at T0 and subsequent stability timepoints.

●Sterility/bioburden: The arrays are also dissolved and the contents are cultured to determine if the sterilization eradicated all bacteria and yeasts from the samples. This test is performed on samples at T0 and subsequent stability timepoints.

All of the results of these tests and others such as moisture content and physical assessment are then collated and appended to a certificate of analysis ("COA"), which, when signed by qualified persons, allows the release of the product by Clinigen Clinical Services, who has stored the product under quarantine until they receive the signed COA authorizing release to the clinical site.

Preclinical Development of D-MNA

Preclinical Test Material

GMP-quality doxorubicin was used for all preclinical studies (murine local lymph node assay, rabbit irritation and pyrogenicity study, and Yucatan minipig local tolerance study). The nonclinical arrays were produced under non-GMP conditions; GMP conditions were not required for these studies. The manufacturing methods used to make the arrays for the non-clinical studies are identical to the methods used to make the GMP-quality arrays.

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Preclinical PK and Safety Studies

The results of the preclinical studies indicate a reliable lack of systemic exposure when doxorubicin is delivered via MNA. Furthermore, minipig studies using doses of up to 200 µg per MNA showed no detectable levels of doxorubicin, measured by LC-MS/MS. Given these data, no systemic effects are anticipated from D-MNA application.

All preclinical studies of D-MNA were conducted by the University of Pittsburgh at the laboratory of Dr. Louis Falo.

University of Pittsburgh Experience

Doxorubicin delivered by the MNAs described in University of Pittsburgh's IND #122448 showed efficacy in causing local, acute tumor cell death in the mouse melanoma model at doses that would otherwise be considered safe (e.g., 25 µg), but sub-therapeutic if delivered via a systemic route of administration. A typical systemic dose of doxorubicin is 60-75 micrograms/m2 and a typical adult cancer patient is 1.73 m2, resulting in a dose of 104 to 130 milligrams (approximately 4,000 times higher than the