SEC Filings

424B5
AVEXIS, INC. filed this Form 424B5 on 01/18/2018
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SUMMARY

        This summary highlights selected information from this prospectus and does not contain all of the information that you need to consider in making your investment decision. You should carefully read the entire prospectus, the applicable prospectus supplement and any related free writing prospectus, including the risks of investing in our securities discussed under the heading "Risk Factors" contained in the applicable prospectus supplement and any related free writing prospectus, and under similar headings in the other documents that are incorporated by reference into this prospectus. You should also carefully read the information incorporated by reference into this prospectus, including our financial statements, and the exhibits to the registration statement of which this prospectus is a part.

        Unless the context indicates otherwise, as used in this prospectus, the terms "AveXis," "the Company," "we," "us" and "our" refer to AveXis, Inc., a Delaware corporation. This prospectus and the information incorporated herein by reference includes trademarks, service marks and trade names owned by us or other companies. All trademarks, service marks and trade names included or incorporated by reference in this prospectus are the property of their respective owners.

Company Overview

        We are a clinical-stage gene therapy company dedicated to developing and commercializing novel treatments for patients suffering from rare and life-threatening neurological genetic diseases. Our initial product candidate, AVXS-101, is our proprietary gene therapy product candidate. We recently completed our Phase 1 clinical trial for AVXS-101 for the treatment of spinal muscular atrophy Type 1, or SMA Type 1, the leading genetic cause of infant mortality. SMA Type 1 is a lethal genetic disorder characterized by motor neuron loss and associated muscle deterioration, resulting in mortality or the need for permanent ventilation support before the age of two for greater than 90% of patients. The survival motor neuron protein, or SMN, is a critical protein for normal motor neuron signaling and function. Patients with SMA Type 1 either have experienced a deletion of their SMN1 genes, which prevents them from producing adequate levels of functional SMN protein, or carry a mutation in their SMN1 gene. AVXS-101 is designed to deliver a fully functional human SMN gene into the nuclei of motor neurons that then generates an increase in SMN protein levels and we believe this will result in improved motor neuron function and patient outcomes.

        In our fully enrolled Phase 1 clinical trial, we treated 15 SMA Type 1 patients, divided into two dosing cohorts, and observed a favorable safety profile and that AVXS-101 is generally well-tolerated. As of January 20, 2017, all patients in the study have survived. Additionally, we have observed improved motor function, including the attainment of motor milestones such as the ability to sit unassisted, crawl, stand and walk, that are essentially never seen among untreated patients suffering from SMA Type 1. The U.S. Food and Drug Administration, or FDA, and the European Medicines Agency, or EMA, have each granted AVXS-101 orphan drug designation for the treatment of SMA, and the FDA has granted AVXS-101 fast track designation for the treatment of SMA Type 1. The FDA granted breakthrough therapy designation for AVXS-101 for the treatment of SMA Type 1 in pediatric patients, and the EMA granted access into its PRIority MEdicines, or PRIME, program for AVXS-101 for the treatment of SMA Type 1. Pending the outcome of our planned Type B meeting with the FDA to discuss chemistry, manufacturing and controls, or CMC, which has been rescheduled to May 1, 2017, we intend to initiate a pivotal trial of AVXS-101 for the treatment of SMA Type 1 in the United States during the first half of 2017 and in Europe during the second half of 2017, and we also intend to initiate a Phase 1 safety and dose escalation study of AVXS-101 via intrathecal delivery in patients with SMA Type 2 in the second quarter of 2017. In addition to developing AVXS-101 to treat SMA Type 1, we plan to develop AVXS-101 to treat additional SMA types and develop other novel treatments for rare neurological genetic diseases.

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