PDE4-B Inhibitors: New Class in Idiopathic Pulmonary Fibrosis treatment
Idiopathic Pulmonary Fibrosis Treatment
Key Points
BI 1015550 represents the first molecule in the phosphodiesterase 4B (PDE4B) inhibitors studied for IPF.
The drug has combined antifibrotic and anti-inflammatory effects.
Either administered alone or in combination with antifibrotic medication, BI 1015550 helps in slowing down the worsening of lung function in people with IPF
Idiopathic Pulmonary Fibrosis (IPF) is a fatal interstitial lung disease. As the morbidity and mortality rates associated with IPF remain high, prompt Idiopathic Pulmonary Fibrosis treatment is critical to safeguard individuals’ lung function, reduce the risk of acute exacerbations, and improve outcomes. Currently, there are only two FDA-approved drugs for Idiopathic Pulmonary Fibrosis treatment, including Esbriet (cytokine inhibitor) developed by Hoffmann-La Roche and Ofev (tyrosine kinase inhibitor) developed by Boehringer Ingelheim.
With prior experience in the Idiopathic Pulmonary Fibrosis treatment, Boehringer is accelerating the development of another drug named BI 1015550 with a novel mechanism of action to treat IPF patients. BI 1015550 represents the first molecule in the class of phosphodiesterase 4B (PDE4B) inhibitors studied for Idiopathic Pulmonary Fibrosis treatment and other progressive fibrosing interstitial lung diseases (ILDs). The drug has combined antifibrotic and anti-inflammatory effects. It recently received Breakthrough Designation by the US FDA in February 2022 for Idiopathic Pulmonary Fibrosis treatment.
At the recently held American Thoracic Society (ATS) International Conference, the Company has published the safety and efficacy of BI 1015550 18 mg twice daily in IPF patients (Phase II (NCT04419506)). In the 12-week data, the drug has shown promising results in both groups, i.e., the rate of lung function decline in patients who were not on approved antifibrotics and those who were taking existing antifibrotic therapy.
The primary study outcome was the change in FVC (measured in mL) from baseline at week 12. In patients who were not on approved antifibrotics, the median change in FVC was increased by 5.7 mL for BI 1015550 and decreased by 81.7 mL for the placebo arm; in patients who were already on antifibrotic therapy, the median change in FVC was increased by 2.7 mL for BI 1015550 and decreased by 59.2 mL for the placebo arm. It was found that BI 1015550 had a >98% probability of being superior to placebo in slowing down the worsening of lung function in IPF patients. Over 12 weeks, the trial also met its secondary goal, and the proportion of patients experiencing any adverse event (AE) was greater in patients treated with BI 1015550 compared to placebo in both AF patients (73% versus 68%) and non-AF (65% versus 52%).
Overall, the study concluded that BI 1015550 at 18 mg BID, either given alone or with antifibrotic medication, preserved lung function in IPF patients. The Company expects to initiate a phase III program for the drug later this year. The drug can be a promising oral therapeutic option for Idiopathic Pulmonary Fibrosis treatment and other fibro-proliferative illnesses due to its preferential inhibition of PDE4B and anticipated enhanced tolerability in humans and its anti-inflammatory and antifibrotic properties. Suppose this drug gets approval in the upcoming years. In that case, it will compete with already approved treatments, and Boehringer Ingelheim might continue to be a leader in the Idiopathic Pulmonary Fibrosis market.
For more detailed analysis, visit at Idiopathic Pulmonary Fibrosis market.
For more detailed information, visit the ATS Conference 2022.
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