Switzerland-based Actelion Ltd (SIX: ATLN) announced says that it will re-direct its development efforts in the anti-inflammatory area, focusing on a potent follow-up CRTH2 antagonist currently in Phase I clinical development.
Two recently concluded studies with the first orally-active CRTH2 antagonist, setipiprant, in asthma (Phase IIb) and seasonal allergic rhinitis (Phase III profiling) did not confirm efficacy findings made in earlier studies. Accordingly, clinical development with this well-tolerated agent in these indications is being discontinued.
By focusing on the more potent follow-up compound, Actelion says it expects to further develop the understanding of the CRTH2 mechanism as a potential anti-inflammatory mode of action in allergic indications.
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