Regenxbio (RGNX) announced that a gene therapy developed based on its technology was approved by the FDA. This gene therapy product is known as Zolgensma, which Novartis (NVS) now owns after acquiring AveXis for $8.7 billion back in 2018. While Novartis does own Zolgensma, it will have to pay royalties to Regenxbio on net sales for it. That means Regenxbio can start earning revenue for one of its very first products. The company is in good shape because it has many other gene therapy programs in its pipeline. The most notable one would be RGX-314, which is being developed to treat patients with wet age-related macular degeneration.