ABC
1Main
2Brand NameComfyde, fka RMJ333369
3Generic namecarisbamate (S]-2-O-carbamoyl-1-o-chlorophenyl- ethanol)
4IndicationEpilelpsy
5MechanismUnknown, probably ion channel modulator. Felbamate derivative (had severe tox but was effective).
6IP
7EconomicsInitially developed by SK Bio-Pharmaceuticals (NJ).
8TimelineCompany preparing for end-of-p2 meeting with FDA. Looking to move into p3 results in the next few months.
9PK11.5-12.8 hour half life, 94% bioavailability. Fast titration.
10SafetyQT shortening. Small % of liver toxicity.
11PapersPharmacokinetics of carisbamate (RWJ-333369) in healthy Japanese and Western subjects. Zannikos et al. Epilepsia 1-10, 2009.
12CompetitionLamictal (generic), Lamictal XR (GSK), Lyrica (PFE), Neurontin (generic), Topamax (generic).
13Clinical Studies
14Phase III "EPY-3013"
15800mg and 1200mg/day 3-arm, 14-week study
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17Phase III "EPY-3001" and "EPY-3002" - Bialer et al 2009
18200mg unsuccessful and 400mg only successful once??
19Two subsequent identically designed, randomized, double-blind, placebo-controlled Phase III studies examined
20daily dosages of 200 and 400 mg. The 400 mg dosage was efficacious in one of the two studies, but the 200 mg dosage
21did not separate from placebo in either study. An additional analysis of the efficacy of carisbamate in the presence and
22in the absence of UGT-inducing AEDs revealed that, for both the 200 and 400 mg daily dosages in both of these studies,
23noninduced subjects had a greater reduction in seizure rate and a greater responder rate than induced subjects.
24Company ran three Phase III studies - R&D Day 2009 One Phase III failed as liver enzyme drug-drug interaction hurt efficacy.
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26Phase III "EPY-3007" vs Topamax and levetiracetam
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28Phase II NPP-2003 in DPN vs Lyrica
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30Phase II Migraine prevention - n=323 - Cady et al Headache 2009
3122 week study, 100mg, 300mg or 600mg vs placebo
32No S.S. effect on migraine reduction.
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34Phase IIB Epilepsy trial in n=537 refractory - Faught et al Neurology 2009
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556/06: JNJ notes top-line phase 2b results "completely validated what we hoped for".
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57Less than placebo discontinuations at 100mg and 300mg.
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59Phase IIA n=13 photosensitive patients - 2007 Trenite et al
60Successful trial.