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Defence Therapeutics Announces Formation of Scientific Advisory Board to Guide Advancement of Accum-Enhanced Antibody Drug Conjugate Programs

Defence Therapeutics (OTCQB: DTCFF) announced formation of its inaugural Scientific Advisory Board (SAB) on December 4, 2025, appointing Rob Leanna, Danny Chui, and Brendan Hussey.

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Defence Therapeutics (OTCQB: DTCFF) announced formation of its inaugural Scientific Advisory Board (SAB) on December 4, 2025, appointing Rob Leanna, Danny Chui, and Brendan Hussey.

The company said its Accum®-enhanced ADC program reached laboratory validations showing increased intracellular accumulation and improved efficacy for Accum-enhanced ADCs. The SAB will provide scientific, technical, and strategic guidance across CMC, antibody engineering, preclinical pharmacology, translational biology, and partnering to support progression toward clinical development and scale.

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Argus Dec 4 session
-2.66% close to close Open Argus
Details

News Market Reaction – DTCFF

On Dec 4, the day this news came out, DTCFF closed 2.66% below the previous close.

Data tracked by StockTitan Argus for the Dec 4 session.

Key Figures

R&D experience: over 20 years
R&D experience
over 20 years
Danny Chui’s therapeutic antibody and ADC development experience

Historical Context

5 past events · Latest: Dec 04
5 events
  1. Dec 04

    Management update

    24h Move
    -2.7%

    Formation of inaugural Scientific Advisory Board to guide Accum-ADC programs.

  2. Nov 21

    Capital structure

    24h Move
    +3.0%

    8% convertible debentures fully converted into common shares at maturity.

  3. Nov 19

    Strategic shift

    24h Move
    -4.9%

    Announced plan to build ADC delivery business and engage Accum licensing partners.

  4. Nov 06

    Conference data

    24h Move
    -2.5%

    Presented Accum data at World ADC Conference and outlined expanded evaluations.

  5. Nov 04

    Preclinical results

    24h Move
    -0.8%

    Reported strong Accum-Kadcyla efficacy and survival data in breast cancer models.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

antibody drug conjugate, intracellular delivery, radiotherapeutic, preclinical development, +1 more
5 terms
antibody drug conjugate medical
"Accum®-Antibody drug conjugate ("ADC") program has reached laboratory validations"
An antibody drug conjugate is a targeted medical treatment that combines a special antibody with a powerful drug, allowing precise delivery of the medicine directly to cancer cells or other harmful cells in the body. For investors, it represents a sophisticated approach to therapy that could improve treatment effectiveness and reduce side effects, potentially leading to significant growth opportunities in the biotech and pharmaceutical sectors.
intracellular delivery medical
"advancing a proprietary intracellular delivery platform that enables more potent"
Intracellular delivery is the set of methods used to transport drugs, genetic material, or other therapeutic agents directly inside living cells, bypassing the cell’s outer barrier. For investors, it matters because success or failure of these delivery methods can determine a therapy’s real-world effectiveness, side-effect profile, and manufacturing complexity—much like choosing the right courier and access code to reliably get a valuable package inside a locked house.
radiotherapeutic medical
"more effective antibody-based and radiotherapeutic treatments"
A radiotherapeutic is a medical treatment that uses high-energy radiation — such as focused X-rays, gamma rays or radioactive particles — to kill or damage diseased cells, most often cancer. Investors care because these products require specialized manufacturing, clinical testing and regulatory approval, carry unique safety and distribution challenges, and can command significant market value if proven effective, much like a precision tool that needs careful handling and certification before wide use.
preclinical development medical
"advance Accum® from preclinical development toward translation and scale"
Preclinical development is the stage where a potential drug, device, or therapy is tested in the lab and in animals to gather evidence on safety, how it works, and whether it’s worth trying in humans. Investors care because this phase creates early “proof” or warning signs about a candidate’s chances of success—similar to a prototype being stress-tested before production—so results strongly influence a project’s value, timeline, and risk.
biomanufacturing technical
"across antibody-based therapeutics, intracellular delivery, translational biology, biomanufacturing"
Making medicines, vaccines and other products using living cells or biological systems instead of purely chemical processes; it is the industrial-scale “cooking” of biological ingredients into finished medical products. Investors care because biomanufacturing determines how quickly and cheaply a company can deliver therapies, meet demand, pass regulatory checks and protect earnings—like a bakery’s ovens and recipes deciding how much bread it can sell and at what cost.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Montreal, Quebec--(Newsfile Corp. - December 4, 2025) - Defence Therapeutics Inc. (CSE: DTC) (FSE: DTC) (OTCQB: DTCFF) ("Defence" or the "Company"), a biotechnology company advancing a proprietary intracellular delivery platform that enables more potent, safer, and more effective antibody-based and radiotherapeutic treatments, is pleased to announce the formation of its inaugural Scientific Advisory Board ("SAB"), composed of Rob Leanna, Danny Chui, and Brendan Hussey.

Defence's Accum®-Antibody drug conjugate ("ADC") program has reached laboratory validations, demonstrating a significant increase in intracellular accumulation and improved efficacy for Accum®-enhanced ADCs. As the Company continues to advance Accum®-enabled ADC programs, the Scientific Advisory Board will play a key role in providing scientific, technical, and strategic guidance, shaping program direction and scientific priorities.

"Our Scientific Advisory Board brings together deep expertise across antibody-based therapeutics, intracellular delivery, translational biology, biomanufacturing, and biotech development," said Maxime Parisotto, PhD, MBA, Chief Scientific Officer of Defence Therapeutics. "Rob, Danny, and Brendan each contribute complementary perspectives that will strengthen our scientific and development strategy as we advance Accum®-powered therapeutics."

The backgrounds of the Scientific Advisory Board members reflect the breadth of expertise required to advance Accum® from preclinical development toward translation and scale.

Rob Leanna is a seasoned pharmaceutical industry veteran with extensive experience in antibody-drug conjugates (ADC) and drug-linker chemistry. Over his decades-long career with AbbVie Inc. he has led development, scale-up, and regulatory strategy for complex biologics and conjugated therapeutics. Now an independent consultant, he advises biotech companies on ADC CMC and development strategy. Rob will play a key role in guiding Defence's CMC approach as Accum®-enhanced ADC programs progress toward clinical development.

Danny Chui is an accomplished R&D scientific leader with over 20 years of experience spanning therapeutic antibody discovery, ADC development, and next-generation biologics. His career includes senior scientific roles at Zymeworks, Kairos Therapeutics, Abgenix, Amgen, and adMare BioInnovations. Danny's expertise in antibody engineering, preclinical pharmacology, and in vivo model development will help guide the advancement of Accum® into complex oncology applications.

Brendan Hussey is an operator-investor with a PhD in biotechnology and a background in investment banking and venture capital. He brings previous experience as CSO, and has led scientific diligences, valuations, and deals execution across multiple therapeutic areas, and currently supports multiple companies on clinical strategy, partnering, and capital formation. Brendan's integrated scientific and financial perspective will help ensure Defence's platform and pipeline are aligned with partners expectations and emerging market opportunities.

The establishment of the Scientific Advisory Board strengthens Defence's scientific foundation as the Company continues to advance its Accum® platform and explore its full potential across antibody-based therapeutics and radiotherapeutics. As Accum®-enabled programs progress, the SAB will support disciplined scientific decision-making and help inform the Company's longer-term development strategy.

About Defence:
Defence Therapeutics is a publicly-traded biotechnology company working on engineering the next generation ADC products using its proprietary platform. The core of Defence Therapeutics platform is the ACCUM® technology, which enables precision delivery of biologics in their intact form to target cells. As a result, efficacy and potency can be enhanced for biologics enabling expanded patient access and market opportunities.

For further information:
Sebastien Plouffe, President, CEO and Director
P: (514) 947-2272
Splouffe@defencetherapeutics.com 
www.defencetherapeutics.com

Cautionary Statement Regarding "Forward-Looking" Information

This release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, that address events or developments that the Company expects to occur, are forward-looking statements. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by the words "expects", "plans", "anticipates", "believes", "intends", "estimates", "projects", "potential" and similar expressions, or that events or conditions "will", "would", "may", "could" or "should" occur. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from those in the forward-looking statements. Factors that could cause the actual results to differ materially from those in forward-looking statements include regulatory actions, market prices, and continued availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and actual results or developments may differ materially from those projected in the forward-looking statements. Forward-looking statements are based on the beliefs, estimates and opinions of the Company's management on the date the statements are made. Except as required by applicable securities laws, the Company undertakes no obligation to update these forward-looking statements in the event that management's beliefs, estimates or opinions, or other factors, should change.

Neither the CSE nor its market regulator, as that term is defined in the policies of the CSE, accepts responsibility for the adequacy or accuracy of this release.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/276858

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Who joined Defence Therapeutics' Scientific Advisory Board announced December 4, 2025 (DTCFF)?

The SAB members named were Rob Leanna, Danny Chui, and Brendan Hussey.

What progress did Defence Therapeutics report for its Accum-enhanced ADC program (DTCFF) on December 4, 2025?

The company reported laboratory validations showing increased intracellular accumulation and improved efficacy for Accum-enhanced ADCs.

What roles will the new SAB play for Defence Therapeutics (DTCFF)?

The SAB will provide scientific, technical, and strategic guidance on CMC, antibody engineering, preclinical models, translational biology, partnering, and development strategy.

How does Rob Leanna's experience support Defence Therapeutics' Accum ADC programs (DTCFF)?

Rob Leanna brings decades of ADC and drug-linker CMC experience and will advise on CMC and clinical development readiness.

What expertise does Danny Chui bring to Defence Therapeutics' SAB (DTCFF)?

Danny Chui brings >20 years in therapeutic antibody discovery, ADC development, antibody engineering, and in vivo model development.

How will Brendan Hussey contribute to Defence Therapeutics' strategy (DTCFF)?

Brendan Hussey offers a combined scientific and capital-markets perspective to guide clinical strategy, partnering, and capital formation.

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