Regenxbio plans to resubmit its Hunter syndrome gene therapy RGX-121 after the FDA reversed course, saying existing data are sufficient for accelerated approval review.

The agency took another step toward clearing a backlog of Makary-era rejections that appeared to contradict earlier agreements with drugmakers.

The FDA will reconsider approving Regenxbio's experimental gene therapy for a deadly and rare childhood brain disorder it rejected just four months ago.