Atossa Therapeutics Takes Significant Steps in Breast Cancer Treatment

Significant FDA Interaction and Advancements

Atossa Therapeutics, Inc. (NASDAQ: ATOS) has announced that it has received positive feedback from the U.S. Food and Drug Administration (FDA). This communication pertains to their proposed dose optimization trial for (Z)-endoxifen, a medication being developed for treatment in cases of estrogen receptor positive (ER+), HER2 negative metastatic breast cancer. The FDA's written response highlights critical components of the clinical development plan, effectively eliminating the need for a pre-Investigational New Drug (IND) virtual meeting and suggesting that an IND submission may occur by the end of 2025.

Positive Feedback and Future Directions

In the recent correspondence with the FDA, Atossa received substantial encouragement, signaling the acceptance of their dose optimization strategy. This positive acknowledgment assures that the initial phases of clinical trials can proceed with the existing data, including substantial input regarding cohort sizes and study design.

Key Highlights of the FDA Feedback

• Dose Optimization Strategy Affirmed: The FDA indicated that existing data suffices to initiate the first part of the dose optimization study.
• Combination Study Support: Atossa's proposed combination of (Z)-endoxifen with standard-of-care therapies has been generally approved, offering a strategic direction for the IND.
• Nonclinical Data Package Deemed Adequate: The existing nonclinical safety data was affirmed as adequate, eliminating the need for more studies.
• Cardiac Safety Assessments Agreement: Atossa's concordance with the FDA regarding the cardiac safety assessments has been confirmed.

These developments demonstrate Atossa's commitment to providing innovative treatment options. CEO Dr. Steven Quay stated, "With the assistance of the FDA's insights, we are moving swiftly to facilitate the introduction of (Z)-endoxifen for patients suffering from metastatic breast cancer." This reflects Atossa's intention to not only meet but exceed regulatory expectations, ensuring a focus on patient safety and treatment efficacy.

Research and Development Efforts

Atossa is dedicated to revolutionizing breast cancer treatment through its innovative research and clinical studies. The company has initiated multiple Phase 2 trials to evaluate (Z)-endoxifen in various forms of breast cancer, including three significant trails focused on HER2 negative cancer.

Understanding (Z)-Endoxifen

(Z)-endoxifen acts as a powerful selective estrogen receptor modulator (SERM), showing impressive efficacy, particularly in cases resistant to current treatments. It is designed to outperform tamoxifen while offering potentially superior bone protection.

The innovative oral formulation of (Z)-endoxifen is particularly noteworthy. This formulation is engineered to withstand the harsh conditions of the stomach, remarkably ensuring that the active (Z)-isomer does not convert into its inactive form. As a result, the drug delivers optimal therapeutic efficacy, and clinical trials have demonstrated excellent tolerance at varied doses.

Atossa's Commitment to Breast Cancer Treatment

Atossa Therapeutics remains focused on its mission to transform treatments for metastatic breast cancer, a field that desperately needs advanced therapeutic options. The strategic focus on (Z)-endoxifen is supported by a comprehensive intellectual property strategy, inclusive of numerous patents and pending applications worldwide.

Future Developments and Shareholder Value

Moving forward, Atossa plans to announce updates regarding the targeted patient demographic, overall trial design, and potential combinations of therapies that will be explored in upcoming studies. The comprehensive responses from the FDA have imbued the team with optimism, allowing Atossa to maintain its momentum in clinical advancement while also aiming to bring substantial value to its shareholders over time.

Frequently Asked Questions

What is the focus of Atossa Therapeutics' current research?

Atossa Therapeutics is focusing on developing (Z)-endoxifen as a treatment for estrogen receptor positive, HER2 negative metastatic breast cancer.

What feedback did Atossa receive from the FDA?

The FDA provided positive feedback affirming Atossa's clinical development plan, allowing progress toward an IND submission.

What are the key developments in the dose optimization trial?

The FDA's feedback indicated that existing data is sufficient to start the trial, confirming plans for monotherapy and combination studies.

What is (Z)-endoxifen's role in Atossa's treatment strategy?

(Z)-endoxifen is a selective estrogen receptor modulator designed to target breast cancer effectively, even in cases resistant to other therapies.

How does Atossa Therapeutics prioritize patient safety?

Atossa emphasizes safety through rigorous clinical studies, incorporating FDA guidance to ensure optimal therapeutic outcomes for patients.

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