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GSK Update on Extension Study for Disapersen
The purpose of this communication is provide an update to you, as you have requested, on GSK’s plans for providing the option of continued access to drisapersen for boys completing the US Ph IIb 48 week study (DMD114876) – clinicaltrials.gov link:
https://clinicaltrials.gov/ct2/show/NCT01462292?term=duchenne+muscular+dystrophy&rank=52
GSK is committed to providing boys who have completed the clinical studies with continued access to drisapersen whilst ensuring that appropriate safety monitoring is maintained, as we seek regulatory approval to make the medicine available in that country.
We appreciate the travel burden that boys and their carers face when participating in the clinical studies so we have also been investigating ways in which this may potentially be reduced while providing continued access to this investigational medicine in line with study guidelines. One means of achieving this is through the use of a treatment protocol (rather than a research protocol). This can allow for local laboratory assessments for most parameters and can allow physicians who may be closer to the patient’s home to participate, thus sometimes minimizing travel for patients and carers. GSK has finalized the treatment protocol and now that it has also been through the relevant FDA review, we are engaging with participating sites with the aim of beginning to initiate the treatment protocol in the US by mid-late summer for US citizens.
In the meantime, for boys who have completed the 48 week DMD114876 study prior to the treatment protocol being initiated, a temporary bridging extension protocol is in start-up at DMD114876 sites with the earliest completers – clinical trials.gov link:
https://clinicaltrials.gov/ct2/show/NCT01803412?term=drisapersen&rank=1
This extension protocol will not be activated in additional sites due to the proximity of the expected start of the treatment protocol. Patients within the open-label extension study will eventually be offered participation in the treatment protocol which should help reduce the travel burden while providing continued access to this investigational medicine. It is important to note that drisapersen is an investigational medicine that has not been approved by the FDA for any indication.
I hope this communication has provided you with some answers to your questions about this change. If, however, you should have additional questions, please let us know by reply to this communication; specific contact details below.
Kind regards
Global Patient Relations Team
Dr John Kraus – Project Physician Leader, Drisapersen
Dr Rohit Batta – Global Medical Affairs and Patient Relations Leader
