A Madison drug development company says it is expanding a study of one of its prostate cancer drug prospects as a result of upbeat early results.

Madison Vaccines Inc. (MVI) said that after a small, early study of its potential prostate cancer treatment, MVI-816, it has enrolled 20 more patients in the study, who will be treated for up to 48 weeks.

The clinical trial involves using MVI-816 along with Merck’s Keytruda in patients with advanced prostate cancer.

Early results show a decline in PSA, an indicator of prostate cancer in the bloodstream; evidence of tumor shrinkage; and an increased immune system response, according to Glenn Liu, principal investigator at the UW-Madison Carbone Cancer Center where the trial is being conducted. Read the full story here.