Instead of diversifying across diseases, Kenai is building deep expertise in Parkinson's. Its pipeline addresses different patient needs: replacing lost cells (lead program), repairing existing damaged cells (002), and targeting inherited forms (003), creating a comprehensive disease franchise.

Despite targeting the KRAS pathway, mutated in ~95% of pancreatic cancers, the pivotal study enrolled all patients regardless of mutation status. This "all-comers" approach simplifies recruitment and, if approved, could lead to a broad label without requiring prerequisite genetic testing, potentially because the drug impacts the entire RAS pathway.

The next wave of neuroscience therapeutics is shifting from managing broad symptoms (e.g., in autism) to precision therapies. By identifying genetic underpinnings of a disease, developers can create drugs that target the specific biology of patient subpopulations, aiming for disease modification rather than just symptomatic relief.

The initial success of pan-RAS inhibitors stemmed from a deliberate development strategy. By designing a drug that blocks all RAS variants, not just a specific mutation, developers could efficiently test their compound in the largest possible patient pool, accelerating clinical validation in a disease highly dependent on RAS signaling.

Instead of focusing on symptomatic relief, Gain Therapeutics' molecule corrects a misfolded enzyme. This restores the enzyme's ability to break down toxic lipids that accumulate in nerve cells, addressing a root cause of cell damage and disease progression, rather than just managing symptoms like dopamine loss.

While designed for the 10% of Parkinson's patients with a specific genetic variant, Gain Therapeutics' trial data shows its drug may benefit a larger group. About 50% of patients without the gene defect also have the toxic lipid buildup the drug targets, suggesting a significantly expanded potential market beyond the initial niche population.

Instead of analyzing a broad patient population, Yellowstone focuses on a hyper-specific cohort: 15 out of 2,000 AML patients who were not only cured by stem cell transplants but also experienced no immune toxicity. This "elite responder" approach aims to identify therapeutic targets that are inherently both effective and safe, learning directly from ideal human outcomes.

K-36's strategy starts with multiple myeloma patients having the T414 translocation, a small, well-defined group where the drug's biological mechanism is strongest. This approach aims to secure a clear clinical proof-of-concept before expanding to broader, biomarker-defined populations, thus de-risking development.

While the industry success rate for drugs entering the clinic is only about 10%, programs with human genetics backing have a 2-3x higher probability of approval. Regeneron reports its success rate is even higher, at four to five times the baseline, due to its strict focus on large-effect genetic signals.