Late Monday, Arvinas Inc. was forced to divulge the contents of its upcoming breast cancer data presentation, slated for the 2022 San Antonio Breast Cancer Symposium (“SABCS”). The clinical-stage biopharma was originally set to unveil the Phase II data for its lead breast cancer medication, ARV-471, on Dec. 8, 2022. But Arvinas’ and Pfizer’s joint abstract was inadvertently published early for conference participants by SABCS. Arvinas’ stock price has since fallen by 18% over the first two days of the holiday-shortened week.