ORP-001 is a reformulation of an existing antiepileptic drug, vigabatrin, which makes its administration to young patients easier and safer too. The clinical evaluation (SoluWest) is completed.
Launched in 1989, vigabatrin (Sabril™) is the only available drug that acts by inhibiting the GABA transaminase enzyme. The product has been long marketed by Sanofi in Europe and since 2009 by Lundbeck in the USA. In 1999, the EMA re-evaluated the risk benefit ratio of vigabatrin and the product is now recommended in Europe for:
> Infantile spasms (severe epilepsy), a rare and devastating form of epileptic encephalopathy with peak incidence at about 6 months of age. It is a rare disease with about 2500 new cases/year in Europe. The prognosis is poor with deleterious effect on brain maturation and cognitive development if left untreated.
> Pharmaco-resistant partial seizures.
Unmet medical need in pediatric patients
Vigabatrin is the first-line treatment for infantile spasms but current formulations are not adapted for pediatric use. Vigabatrin is part of the “Revised priority list for studies into off-patent pediatric medicinal products” published by the EMA in 2014 with the need of an “age-appropriate formulation”.
ORPHELIA Pharma has developed a solution to conveniently dose vigabatrin:
> Easy dosing by increments of 50 mg: one scored tablet of 100 mg and one scored tablet of 500 mg.
> Bioequivalent to Sabril™ sachet.
> (Oro)dispersible tablets with fast water dispersion (< 30 seconds).
> Concentrated solutions can be obtained.
> Easy manipulation for care givers.
> Less wastage.
ORP-002, ORP-003 & ORP-006
ORP-002 is a drug developed in Rett syndrome, a debilitating condition for which no treatments are available. This program has obtained an Orphan Drug Designation (EU/3/09/643) from the EMA.
ORP-003 is a reformulation of an existing antiepileptic drug to make it easier and safer to administer to children and expand its current authorized indications.
ORP-006 is a drug that targets an orphan form of a neonatal epileptic encephalopathy. The dosage form developed is a new enteral/parenteral formulation which could be used for neonates, children and adults.