Company: MDCXW
Filing Date: 2025-05-27
Form Type: S-1
Source: 0001062993-25-010333
Chunk: 88

Company: Medicus Pharma Ltd.
Filing Date: 2025-05-27
Form: S-1
Chunk 88
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 to be effective against advanced BCC (Soura et. al. 2015).

The current standard of care for localized BCC is surgical, either via standard excision or Mohs micrographic surgery; but it carries risks, including bleeding, scarring, and infection. Surgical treatment may not be desirable or indicated for all patients, resulting in a demand for more non-surgical treatment options.

Commonly used topical treatments for BCC currently include: imiquimod; 5-fluorouracil; and tazarotene.

Imiquimod works primarily by acting as an agonist of toll-like receptors 7 and 8 (Schon and Schon, 2007) leading to activation of nuclear factor-kappa B. This activation results in the induction of pro-inflammatory cytokines and chemokines, ultimately resulting in a T-cell-mediated anti-tumor immune response (Schon and Schon, 2007). Imiquimod has demonstrated efficacy in the treatment of both superficial and nodular BCC; however, imiquimod's efficacy is significantly inferior to surgery, with 84% of imiquimod-treated patients remaining tumor-free after 3-years, compared to 98% of surgically treated patients (Bath-Hextall et. al. 2014).

5-Fluorouracil is an antimetabolite that blocks DNA replication by inhibiting thymidylate synthase (Nakamura et. al. 2014). Three-year tumor-free status following treatment with fluorouracil is poorer than with imiquimod, with 68% of patients remaining tumor-free after 3-years (Roozeboom et. al. 2016).

Tazarotene's mechanism-of-action as an anti-neoplastic agent is not fully understood, but it is believed to be related to its ability to cause caspase-dependent apoptosis (Wu et. al. 2014). Tazarotene is a less-promising non-surgical alternative, with only 30.5% of patients remaining tumor-free at 3 years (Bianchi et. al. 2004).

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Regulatory Environment

The production and manufacture of the Product and its research and development activities are subject to regulation for safety, efficacy and ethics by various governmental authorities in the United States. Although the present plan is to focus research and development in the United States, we might in