Northwest Biotherapeutics announced that a Marketing Authorization Application (MAA) was submitted to the Medicines and Healthcare Products Regulatory Agency (MHRA) in the UK for DCVax®?-L for glioblastoma brain cancer. The MAA seeks approval for commercialization of DCVax-L for both newly diagnosed and recurrent glioblastoma (GBM). The application also requests to be considered under the MHRA's rapid 150-day review pathway, which the agency has established for new medicines for serious unmet medical needs.

GBM is the most lethal and most common form of primary brain cancer. Despite well over 400 clinical trials of a wide range of treatment agents, patient survival in newly diagnosed GBM is only 15-17 months and has not meaningful improved in 20 years; survival in recurrent GBM is only 6-8 months and has not improved in 30 years. The Company's international Phase III trial demonstrated a statistically significant and clinically meaningful extension of median survival in both newly diagnosed and recurrent GBM in patients treated with DCVax-L compared with independently selected, matched, contemporaneous, pre-specified external controls.

The trial also demonstrated more than doubling of the percentage of patients alive at 5 years in newly diagnosed GBM, and more than doubling of patients alive at 3 years after tumor recurrence in recurrent GBM patients, although the numbers of patients available for comparison at late time points was small, especially in the external control populations. One of the key factors making GBM so difficult to treat is that it is an extremely heterogeneous tumor. DCVax-Direct involves essentially the same mechanism of action as DCVax-L, except that the tumor target proteins are taken up by the dendritic cells in situ in the tumor following intra-tumoral injection, rather than from tumor lysate from a surgically resected tumor tissue sample.

The Company looks forward to resuming its clinical development of DCVax-Direct for a wide range of inoperable solid tumors. For the GBM MAA, the Company anticipates that the review process will be a period of intensive and extensive further work involving responding to questions and requests for further information by the regulatory authority as well as preparing for and undergoing detailed inspections of the contract research organizations (CROs) that managed the trial, the Sponsor, the Trial Master File, a number of individual trial sites selected by the regulatory from among the 94 sites that participated in the trial, the GMP facility and manufacturing information.