Many effective drugs that are already developed will not reach patients for years because the clinical trial system is the primary bottleneck. This delay is due to logistical and structural inefficiencies in testing, not a lack of scientific discovery.

Shelved drugs aren't a monolith. They typically fall into four categories: 1) dropped due to a strategic shift, 2) orphaned after a biotech acquisition, 3) returned to a small company after a partnership ends, or 4) legally inaccessible after a company's bankruptcy. Understanding these archetypes is key to tailoring a rescue strategy.

Progress in drug development often hides inside failures. A therapy that fails in one clinical trial can provide critical scientific learnings. One company leveraged insights from a failed study to redesign a subsequent trial, which was successful and led to the drug's approval.

A major source of unproductivity in drug development isn't the time spent reaching a clinical milestone. Instead, it's the 'white space' after data is received—the delay in analyzing results and making a firm go/no-go decision, which stalls the entire program.

The process of testing drugs in humans—clinical development—is a massive, under-studied bottleneck, accounting for 70% of drug development costs. Despite its importance, there is surprisingly little public knowledge, academic research, or even basic documentation on how to improve this crucial stage.

Discontinued drugs aren't hard to identify; the real challenge is navigating the out-licensing process inside a large pharma company. Without an internal champion to drive the complex approvals for a non-priority asset, promising drugs can languish on the shelf due to corporate inertia, not a desire to hide them.

Instead of a total overhaul, we can accelerate trials with three changes: 1) A simple patient opt-in registry for trial participation. 2) Collaborative platform trials testing multiple drugs against one control group. 3) A shared database for all trial data, including failures.

The ultimate vision is a dynamic marketplace where pharma companies routinely list their shelved assets. This "eBay for drug candidates" would allow interested parties—from biotechs to patient advocacy groups—to access information, assess opportunities, and bid on developing these assets, creating a systematic and efficient repurposing pipeline.

The primary bottleneck in drug development isn't creating therapies but identifying the right targets. Regeneron built its massive genetics database to find rare, protective genetic mutations in humans, effectively de-risking the target identification process and aiming to improve the industry's low success rate.