Clinical Studies
Curonz has conducted the following clinical trials on NRP2945 in humans. Both studies were completed in Australia under the TGA guidelines.
Clinical Phase I
Clinical Phase I randomized double-blind safety / tolerability and PK study with healthy male volunteers:
- 49 (+3 replaced drop-outs) male volunteers in 7 cohorts with single and multiple ascending dosages of NRP2945 (from 1- 25 ug/kg) fully formulated injectable-solution of NRP2945 dosed in a 27 days SC-injection study.
- A 5:2 ratio of NRP2945 vs Placebo.
- Safety (ECGs, vital signs and blood chemistry), tolerability (injection site reactions) during 28-days dosing (subcutaneous NRP2945-bolus every 48 hrs).
- NRP2945 was deemed safe and well tolerated.
- No adverse events in vital signs, ECGs and safety blood.
- Mild injection site reactions only in 20-25% of participants which were quickly resolved.
- During 300 injection days less than 1.5 % headaches and 2% fatigue events.
- PK was dose-dependent with half-life between 22-25 min and non-accumulative with a Cmax of 1-1.5 ng/ml.
- Blood-based biomarker indicated receptor-based target engagement for NRP2945 in brain.
Clinical Phase IIa - Absence Epilepsy
In 2019, CuroNZ conducted a proof-of-concept study (phase IIa) with heavily drug-resistant Genetic Generalized Absence Epilepsy patients in Melbourne (Australia). The drug candidate was again well tolerated and after only 4 subcutaneous bolus injections the majority of drug-resistant patients achieved seizure freedom in the range between 10-60 days.
Outline and achieved clinical phase IIa data are summarized as follows:
- Screening of generalized epileptic encephalopathy patients with absence epilepsy patterns that are uncontrolled by 3 previously administered AEDs.
- Patients acutely subcutaneously injected with NRP2945 in a cross-over design study.
- Three cohorts (1 x placebo arm and 2 x dosages of NRP2945) in a cross-over design.
- EEG-controlled pharmacodynamics for safety and efficacy monitoring revealed seizure freedom after cohort 3 dosing and immediate downregulation of epileptiform activity profiles.
- NRP2945 passes the human blood brain barrier within minutes because of dropping cumulative seizure rate within 30 min after NRP2945 injection.
- Blood chemistry and vital sign analysis showed maximal safety.
- Seizure reductions for all patients.
- Seizure freedom achieved for the majority of patients (ranging from 10-60 days).