Drug developer Brainstorm Cell Therapeutics Inc said its experimental cell therapy was found safe and well tolerated in patients with amyotrophic lateral sclerosis (ALS), a progressive neurological disorder, in a mid-stage study.

The New Jersey-based company's shares jumped 16 percent to $3.47 in premarket trading on Monday.

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ALS is an invariably fatal neurological disease that attacks the nerve cells responsible for controlling voluntary muscles.

The drug, NurOwn, also showed a clinically meaningful benefit compared with a placebo, Brainstorm said.