Fibrotic Lung Disease

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Investigating a New Approach for Patients With Devastating Lung Disease

Fibrotic lung diseases, also known as interstitial lung diseases (ILDs), are a group of more than 200 diverse diseases that cause progressive, abnormal scarring in the lungs. Over time, this scar tissue reduces the ability of the lungs to absorb oxygen and can lead to serious illness and death.


Idiopathic pulmonary fibrosis

IPF is the most common type of ILD, affecting more than 100,000 adults in the United States. Although the exact cause of IPF is unknown, various environmental factors can deliver repeated injuries to lung cells that trigger abnormal wound healing processes and life-threatening lung scarring. IPF is a chronic disease with limited treatment options and a very poor prognosis: the average life expectancy is only three to five years after diagnosis.


Progressive pulmonary fibrosis

PPF is a group of non-IPF fibrosing ILDs with a progressive course despite conventional treatment – there are an estimated 186,000 individuals with PPF in the United States. These diseases, which include the progressive forms of hypersensitivity pneumonitis (HP), sarcoidosis and connective tissue diseases such as scleroderma, are associated with high mortality.

3D Image of Human Lungs

Even individuals with IPF who are treated with the current standard of care medications suffer from decreased quality of life and limited longevity. Current standard of care does not address the underlying cause of IPF or PPF – it may minimally slow the decline of lung function, but does not stop or reverse it, and is associated with tolerability issues that limit its long-term use in most patients.

“Patients with IPF need a transformational therapy – one that changes the expectation for treatment from slowing the inevitable disease progression to reversing lung fibrosis and improving lung function.”

John Hood, PhD
Co-Founder, CEO and Chairman

Endeavor’s Disruptive Approach

Endeavor BioMedicines is determined to change the relentless progression of IPF and PPF. Our approach has demonstrated potential to block a cellular wound-healing pathway known as Hedgehog (Hh) that is abnormally activated in IPF and PPF and causes the buildup of scar tissue in lungs. Our lead investigational compound is ENV-101, an Hh signaling pathway inhibitor that has demonstrated potential to be the first-ever disease-modifying therapy that may go beyond slowing disease progression in IPF. We’ve completed a Phase 2a study in patients with IPF and plan to initiate a Phase 2 study in patients with IPF – as well as a parallel cohort of patients with PPF.

3D illustration of molecules