I'll now turn the call over to John McLaughlin, President and CEO of PDL BioPharma.
Thank you Jennifer and good afternoon everyone. Also with me today is Bruce Tomlinson, our Chief Financial Officer. As always in this call, I'll provide a summary of recent events, and then Bruce will review our quarterly financial results.
I'd like to begin on slide number three with an overview of our newest royalty stream. In June of this year, Genentech and Roche have notified that Pertuzumab, which is being sold under the brand name Perjeta, is a licensed product under our license agreement. Genentech and Roche set a price of $5,900 per month, higher than most expectations on Wall Street and wants Perjeta one business day after its approval.
This is a very exciting therapy, approved in combination with Herceptin and chemotherapy for the first line treatment of women with HER2-Positive Metastatic Breast Cancer. In the pivotal trial, Perjeta, Herceptin and chemo showed a 6.1 month improvement in progression free survival, compared to patients receiving only Herceptin and chemo.
Recently, Genentech and Roche announced that Perjeta also met its secondary endpoint of overall survival in this trial. They have said that the precise value will be disclosed before the end of the year.
In addition, Perjeta is being studied in the Phase-III trial in the adjuvant setting. Please recall that Phase-II data, which shows patients on Perjeta, Herceptin, and Chemo in the adjuvant setting had a pathological complete response or PCR of 45.8%, compared to 29% for those HER-2 Positive breast cancer patients receiving only Herceptin and chemotherapy. Genentech and Roche have guided that they believe the annual peak sales of Perjeta will exceed $1 billion.
There has been significant attention in the press and on Wall Street with respect to two other licensed antibodies, both targeting beta-amyloid, although in different manners, and both being studied to determine if they could slow the progression of Alzheimer's disease, in patients with mild to moderate symptoms. These antibodies are of bapineuzumab, being developed by Pfizer and J&J, and solanezumab being developed by Eli Lilly.