following first or second-line chemotherapy (including
Herceptin(R)). In the second study, performed in Serbia and Poland,
MVA-BN(R)-HER2 is being evaluated following first or second-line
chemotherapy or in combination with single-agent taxane chemotherapy. Both
studies evaluate treatment of metastatic breast cancer patients, whose
tumors overexpress HER2. Patients are vaccinated 3 times, at 3 week
intervals, with the MVA-BN(R) viral vector which has been engineered to
express the extracellular fragment of human HER2.
By July 2008 enrolment in the studies was completed. No drug-related
severe adverse events have been reported thus far. The vaccine has been
shown to be well tolerated and immunogenic.
Immune evaluation of samples from 18 patients treated with
MVA-BN(R)-HER2 revealed that 12 patients developed an immune response
(humoral and/or cellular response). These preliminary data show that
MVA-BN(R)-based; HER2 directed vaccination is a biologically active
treatment for patients with HER2 positive breast cancer. The final study
data are expected around the turn of the year 2008/2009.
Prostate cancer
A Phase I/II, open-label safety and tolerability study in 18 male
patients with non-metastatic hormone-insensitive prostate cancer has begun
enrolment in the U.S. Secondary objectives of the trial include examining
the ability of the vaccine to induce prostate antigen-specific immune
responses, as well as clinical anti-tumor activity. Preliminary data is
expected during second half year 2009.
The therapeutic vaccine, based on the Company's MVA-BN(R) technology,
is designed to generate cellular and humoral immune responses to PSA and
PAP (prostate specific antigen and prostatic acid phosphatase), which are
both well-known prostate cancer tumor targets.
Infectious diseases
HIV
In first half of 2008, Bavarian Nordic initiated clinical trials its
HIV vaccine candidate: MVA-BN(R) HIV multiantigen.
A Phase I/II
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