Experimental Psoriasis Drug Produces Impressive Results

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But the fact that the disease went away for such a long period of time after only one injection also implies that there's another mechanism of action.

"Either the drug stays around a lot longer than anyone could possibly imagine or it has some down-regulatory effect," Krueger said. "Currently, it's our belief that the latter is the case because the drug has a 21-day half life."

The interleukin-12/23 monoclonal antibody also appears to work against inflammatory bowel disease, indicating that the interleukin-12/23 pathway is common to both conditions.

More information

To learn more, visit the National Psoriasis Foundation.