French drug major Sanofi (Euronext: SAN) and subsidiary Genzyme have reported results from pivotal studies - CARE-MS I and CARE-MS II showing that the multiple sclerosis drug Lemtrada (alemtuzumab) was significantly more effective at reducing annualized relapse rates than the comparator Rebif ((77.6% versus 58.7%, p<0.0001), and about 65% of patients on Lemtrada were relapse-free at two years compared to 47% on Rebif (p<0.0001).
In addition, in CARE-MS II, accumulation of disability was significantly slowed in patients receiving Lemtrada versus Rebif (interferon beta-1a). Furthermore, data indicated that patients treated with Lemtrada were significantly more likely to experience improvement in disability scores than those given Rebif suggesting a reversal of disability in some patients.
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Chairman, Sanofi Aventis UK
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