Seeking a 2-point improvement was a high bar, which they still met for just under half of the test subjects. When you look at the lower standard of a 1-point improvement (which a lot of people would probably like to have)

"patients who received any dose of Prurisol, regardless of the treatment arm, had a 1-point improvement (using the IGA scoring system) at a higher rate than that of patients in the placebo arm."