Voyager CEO Al Sandrock outlines a focused strategy: remain specialists in neurology, but broaden the therapeutic modalities (gene therapy, proteins, oligonucleotides). This allows them to pursue well-validated CNS targets that are considered "undruggable" by traditional small molecules, which have historically been the only option for crossing the blood-brain barrier.

Recognizing that severe myotonic dystrophy involves CNS impairment, Arthex deliberately invested in a lipid conjugation delivery system for its RNA therapeutic. This strategic choice was made specifically to cross the blood-brain barrier, enabling the treatment of both muscular and neurological symptoms of the disease.

The CEO predicts the future of Duchenne muscular dystrophy treatment will involve combination therapy. Rather than one gene therapy replacing all other drugs, he expects a future where gene therapies are used alongside exon-skipping drugs. Payer research indicates willingness to cover both if the gene therapy shows at least three years of durability.

In the race to treat Friedreich's Ataxia, the choice of viral vector is a key competitive differentiator. While most use AAVs, some companies use HSV vectors for larger payload capacity or engineered AAV capsids to cross the blood-brain barrier. This highlights that the delivery system's innovation is as critical as the therapeutic gene itself.

Recognizing that eye diseases are multifactorial, the company's research team is developing bisistronic vectors. This approach packages two different transgenes into a single AAV vector, allowing a single gene therapy product to address multiple disease pathways simultaneously, a significant advancement over single-target therapies.

For its Friedreich's ataxia program, the company uses a dual-route administration to deliver the gene therapy to the dentate nucleus of the cerebellum, the spinal column, and the heart. This comprehensive approach is designed to meet patients at any stage of their disease, addressing both central nervous system and cardiac symptoms with a single treatment.

The therapeutic strategy for Friedreich's Ataxia is evolving from helping cells cope with mitochondrial stress (like the approved drug SkyClaris) to addressing the root genetic cause. The incoming pipeline is dominated by gene therapies aiming to restore the deficient frataxin gene itself, marking a fundamental shift towards a potentially curative approach.

Regeneron pursues therapies for ultra-rare diseases, even without a clear standalone business model. The strategy is to treat these programs as the "tip of the iceberg," establishing a technology platform and biological understanding that can then be expanded to treat much more common diseases.

Leal Therapeutics intentionally built a team capable of developing both oral small molecules and nucleic acid drugs. This dual-modality platform provides strategic agility, allowing them to select the optimal therapeutic approach for a given disease, such as an intrathecal ASO for ALS and a brain-penetrant small molecule for broader indications.