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Orphan drug status to elezanumab<br />

for treating spinal cord injury<br />

AbbVie announced that the<br />

US FDA has granted Orphan<br />

Drug and Fast Track designations<br />

for elezanumab (ABT-555), an<br />

investigational treatment for<br />

patients following spinal cord injury.<br />

Elezanumab is a monoclonal<br />

antibody of the human<br />

immunoglobulin (Ig) G1<br />

isotype that binds selectively<br />

to repulsive guidance<br />

molecule A (RGMa). RGMa is<br />

an inhibitor of axonal outgrowth<br />

and recognized as an important<br />

factor in inhibiting neuronal<br />

regeneration and functional<br />

recovery following central nervous<br />

system (CNS) damage.<br />

Elezanumab is being<br />

investigated to treat spinal cord<br />

injuries, multiple sclerosis and acute<br />

ischemic stroke. It is currently in a<br />

phase 2 study for the treatment of<br />

spinal cord injury.<br />

Currently AbbVie is partnering<br />

with the Shirley Ryan AbilityLab and<br />

MC10 in a pilot study involving 20<br />

spinal cord injury patients.<br />

The pilot study will inform<br />

the ongoing phase 2 study of<br />

elezanumab by testing optimal<br />

biosensor placement to capture<br />

surface electromyography (sEMG),<br />

among other assessments.<br />

173 patients) for a total<br />

duration of 44 weeks.<br />

The study evaluated<br />

the efficacy and safety of<br />

tofacitinib taken as either a<br />

5 mg tablet or as a 1 mg/mL<br />

oral solution twice daily based<br />

on the subject’s body weight<br />

(

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