Guided Growth Factor Signaling

Directing repair where it's needed

Seipolt Therapeutics engineers precision protein therapeutics that localize protective growth factor signaling to the failing heart, unlocking the myocardium's potential for repair and regeneration without the toxicity of systemic drug activity.

Seattle, WA Stealth Stage

Precision localization of growth factor signaling

Growth factors are among the body's most potent mediators of tissue repair, and yet systemic delivery has often failed — potent biological activity distributed across the whole body frequently causes unacceptable side effects.

Seipolt Therapeutics' platform guides and anchors growth factor activity to the tissue impacted by disease, delivering regenerative signals with spatial precision. Local efficacy is maximized while systemic toxicity is minimized.

The approach is grounded in well-validated cardiac biology and directly addresses cellular damage underlying heart failure that existing therapies fail to correct.

  • Tissue-targeted delivery Signaling is guided to tissues that express specific molecular signatures, concentrating growth factor activity precisely at the site of damage.
  • Minimized systemic activity Spatial precision and tuneable activity dramatically reduce off-target activity, greatly expanding the therapeutic window.
  • Broadly applicable A single engineering platform translates across tissue types and organ systems, with the lead program focused on the failing heart.
  • Validated biology Grounded in well-characterized growth factor pathways with established clinical precedent, reducing mechanistic risk.

Heart failure — a massive unmet need for cardiac repair

Heart failure affects millions of patients worldwide and remains one of the leading causes of hospitalization and death despite decades of therapeutic advances. Current treatments slow progression but do not directly address the underlying cellular damage.

6.7M
Patients in the United States

Heart failure affects an estimated 6.7 million adults in the US alone, with more than 800,000 new cases diagnosed each year. It is the leading cause of hospitalization in patients over 65.

64M
Patients globally

Approximately 64 million people worldwide live with heart failure, making it one of the most prevalent cardiovascular conditions globally and a leading driver of healthcare costs.

~50%
HFpEF — the underserved majority

Approximately half of all heart failure patients have heart failure with preserved ejection fraction (HFpEF). This population has limited approved treatment options and represents a critical area of unmet medical need.

8.1%
One-year mortality

Despite modern guideline-directed medical therapy, heart failure carries an 8.1% one-year mortality rate following diagnosis, rising sharply with age and disease severity. Five-year survival remains below 50%.

Current heart failure therapies — including RAAS inhibitors, beta blockers, SGLT2 inhibitors, and aldosterone antagonists — reduce hospitalizations and slow progression by modulating neurohormonal pathways. However, none directly address the loss of cardiomyocyte mass and contractile function that drives disease. Growth factor pathways promote cardiomyocyte survival, maintenance, and regeneration. Seipolt Therapeutics is engineering targeted growth factor therapeutics that deliver this regenerative signal directly to the myocardium, complementing existing standard of care rather than competing with it.

Complementary to standard of care

Seipolt's therapeutics are designed to be complementary — not competitive — with existing heart failure treatments. The established pillar therapies slow neurohormonal-driven disease progression but do not directly induce repair or regeneration of lost cardiomyocytes. Targeted growth factor signaling addresses this mechanistic gap, enabling use on top of standard of care to extend durable benefit.

Differentiated mechanism of action

The MOAs of guided growth factors are orthogonal to existing approved therapies, enabling use on top of standard of care.

Precision delivery, minimized toxicity

Tissue-targeting concentrates biological activity where it is needed in the heart, reducing systemic effects that pose safety risks.

Platform breadth, program focus

A single engineering platform enables rapid application across broad disease areas, with a focus on heart failure to meet the needs of millions of patients.

Translatable biology

Seipolt's heart failure program is grounded in well-established biology with clinical precedent, reducing mechanistic risk.

Programs in development

Program Indication Modality Stage
Undisclosed Heart Failure Undisclosed
Discovery

All programs are investigational and have not been approved by the FDA or any other regulatory authority. Pipeline designations are for organizational purposes only.