Dynavax Restructures and Emphasizes Immuno-Oncology Program - Seite 2

Prioritizing Diversified Immuno-Oncology Pipeline
Dynavax has made notable progress in the rapidly advancing area of immuno-oncology, and is focusing on two promising compounds that have shown potential to enhance the immune response against cancer.

The company's lead clinical candidate, SD-101, an investigational cancer immunotherapeutic, is currently being studied in several Phase 1/2 studies evaluating its potential to be broadly effective against multiple solid tumors and hematologic malignancies. SD-101, an intratumoral TLR9 agonist, has shown encouraging early clinical data in metastatic melanoma.

At the Society for Melanoma Research conference in November 2016, Dynavax announced the first findings from an ongoing Phase 1/2 study of SD-101 in combination with Keytruda^® (pembrolizumab), Merck's anti-PD-1 treatment. Early results evaluating 13 patients with metastatic melanoma for efficacy and 19 patients for safety were reported. In patients naïve to anti-PD-1 treatment, objective responses were observed in four of five patients (80 percent), including one complete response and three partial responses. In a small number of patients with progressive disease stable disease was observed while receiving Keytruda and SD-101 in combination. The combination of the two drugs was well-tolerated with no dose-limiting toxicities. These encouraging clinical data will be enhanced by a dose-expansion phase to further explore the efficacy of this combination.

Dynavax is also developing a second TLR9 agonist, DV281, which has completed preclinical testing in models for lung cancer. Lung cancer remains an area of high unmet need, with fewer than 20 percent of patients responding to the most recently-approved immunotherapies. DV281 will be administered as an inhaled therapeutic. Dynavax intends to begin Phase 1 studies of DV281 in the second quarter of 2017.

The company expects to present additional data from its immuno-oncology portfolio at medical conferences throughout 2017, including at the American Association for Cancer Research (AACR), the American Society of Clinical Oncology (ASCO) and the European Society for Medical Oncology (ESMO).

Continuing to Advance HEPLISAV-B while Maintaining Manufacturing Capacity at Reduced Cost
Dynavax plans to respond this month to the November 2016 Complete Response Letter (CRL) from the FDA regarding its Biologics License Application (BLA) for HEPLISAV-B, and will advance the vaccine through an expected six-month FDA review period. The company remains confident that the existing clinical data package meets the requirements for approval. During the regulatory review period, Dynavax will retain, but furlough, the majority of the workforce supporting its manufacturing facility in Germany. This approach will enable the company to leverage the existing stockpiled inventory of HEPLISAV-B, while providing it with the ability to re-activate and scale for commercial launch activities.