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Protalix (PLX) Fabry Disease Candidate Gets Orphan Status

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Protalix BioTherapeutics, Inc. announced that the European Commission (“EC”) has granted orphan drug designation to its pipeline candidate, PRX-102 (pegunigalsidase alfa). The small biotech company is developing PRX-102 for patients with Fabry disease, a rare inherited genetic lysosomal disorder.

The orphan status for PRX-102 was expected as the Committee for Orphan Medicinal Products in Europe had recommended the grant on Nov 13, 2017.

Shares of the company rose almost 2.26% on Dec 27, including after-hours movement. In fact, Protalix’s shares are up 48.3% so far this year, outperforming the industry’s gain of 3.5% in that period.

The intravenous administration of the candidate is currently being evaluated in a phase III study in patients who have received Shire plc’s Replagal.  Data from the study is expected in the second half of 2018.

Another phase III study is evaluating PRX-102 in patients with Fabry disease patients who have impaired renal function and have been treated with Sanofi’s (SNY - Free Report) Fabrazyme. Another phase III study is evaluating the candidate in moderate-to-severe gastrointestinal symptoms in treatment naïve Fabry disease patients.

Both Replagal and Fabrazyme are approved for treating Fabry disease. While Replagal recorded sales of $349 million in the first nine months of 2017, Fabrazyme generated sales of more than $600 million in that period. This represent a significant prospect for PRX-102 upon potential approval.

The orphan drug status, if valid till approval, will give PRX-102 an exclusivity for 10 years.

Protalix has one marketed drug, Elelyso, which is approved for treating Gaucher disease. It has generated sales of $16.8 million in the first nine months of 2017. The drug is marketed by Pfizer Inc. (PFE - Free Report) in the United States as part of an exclusive license and supply agreement.

The company is also developing PRX-110 for treating cystic fibrosis and OPRX-106 as an orally-delivered anti-inflammatory treatment.

Protalix currently has a Zacks Rank #4 (Sell).

You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

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