Oxford BioMedica plc ("Oxford BioMedica" or "the Company") (LSE: OXB), a leading gene therapy company, announces that new data from the on-going Phase I/II trial of ProSavin(R) for the treatment of Parkinson's disease (PD) were presented at the American Society of Gene & Cell Therapy (ASGCT) 14th Annual Meeting held in Seattle, USA by Professor Stephane Palfi, Principal Investigator at the Henri Mondor Hospital in Paris, on Saturday 21 May 2011.
Highlights of third cohort at six months (2x dose, enhanced administration)
- Average motor function improvement of 43%, with a maximum of 61% in one patient;
- Patient diary data show an increase in functional "ON" time (when PD symptoms are not present) of approximately 3 hours;
- Patient diary data show a decrease in "OFF" time (after withdrawal of PD medication) of approximately 4 hours;
- Daily dose of L-DOPA "equivalent" therapy has either reduced or remained stable;
- Quality of life has either improved or remained stable on the PDQ-39 questionnaire and these findings are consistent with the UPDRS activities of daily living (ADL) subscore; and
- Continued favourable safety profile with no serious adverse events related to ProSavin(R) or the enhanced administration procedure developed by the Company.
1. Motor function is assessed according to the Unified Parkinson's Disease Rating Scale (UPDRS) in patients' "OFF" state (i.e. after withdrawal of PD medication).
2. Patient diary data only available for n=2 patients at six months.
3. Quality of life is assessed based on a standard measure of clinical benefit using a patient questionnaire known as PDQ-39.
4. The activities of daily living (ADL) subscore of the UPDRS captures the impact of PD on daily function.
Commenting on the six-month third cohort results, Professor Stephane Palfi, Principal Investigator at the Henri Mondor Hospital in Paris, said: "Cohort 3 results at six months confirmed the safety profile of ProSavin(R) and the enhanced delivery method which permits a significant reduction of the surgical time. The encouraging efficacy data on Parkinsonian motor symptoms obtained in cohort 3 patients show that we are definitely approaching the right dose for the randomised Phase II study."
Stuart Naylor, Chief Scientific Officer of Oxford BioMedica, said: "The ProSavin(R) data set is extremely promising in terms of the improvements we are seeing across multiple endpoints. With patient diary measures further supporting the positive impact on patients' lives, these data underline the potential for this novel approach to address the motor symptoms of Parkinson's disease. Our LentiVector(R) platform technology is designed to treat chronic, degenerative diseases and the ProSavin(R) results to date demonstrate the long-term benefits associated with a single administration."
Tom Isaacs, President and Co-Founder of The Cure Parkinson's Trust and person with Parkinson's disease, said: "ProSavin(R) is one of the more advanced of the prospective gene therapy products in development for Parkinson's and is unique in its aim to achieve dopamine replacement. These results demonstrate it also has the potential to make a huge difference to those of us living with this terrible condition. For 40 years, people with Parkinson's have struggled with the complexities and side-effects of oral L-DOPA. These statistics indicate that, at last, there might be an effective and enduring alternative means of re-asserting control over the movement of your own body. People with Parkinson's everywhere should take heart."