So I heard that Setipiprant failed the trials for hair loss, as well as allergies and asthma. In short, the CRTH2 blockade didn't do sh*t.
However, Ramatroban, another CRTH2 antagonist, DOES work for allergies:
http://www.ncbi.nlm.nih.gov/m/pubmed/11778458/
In my opinion, Setipiprant is just...