To get FDA approval, new opioids must undergo Human Abuse Potential (HAP) studies. In these counter-intuitive trials, the goal is to lose. The drug is tested on recreational opioid users to measure its 'liking' score. Success is defined by demonstrating the new drug is significantly less preferable than existing abusable opioids like Oxycodone.

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Several panelists voted "yes" for approval not because of a compelling risk/benefit profile, but because they believe physicians and patients should have the "option" to choose the therapy. This reveals a philosophy where regulatory approval is seen as a gateway to choice, deferring the final, nuanced risk-benefit decision to the clinic.

The brain maintains balance by counteracting any deviation to the pleasure side with an equal and opposite reaction to the pain side. This opponent process is why we experience hangovers and why chronic indulgence leads to a dopamine deficit state, driving us to use more just to feel normal.

The company's strategy focuses on the critical period after short-acting analgesics (lasting 2-3 days) wear off, but before surgical pain (lasting 3-4 weeks) subsides. This gap is where opioid dependence often begins, creating a clear market opportunity for an extended-release, non-opioid solution.

Up to 25% of people experience a euphoric response when taking opioids, a key driver of addiction. The risk is highest for the subset of this group (about 5-6% of the total population) who also have predisposed addictive tendencies. This shows how a prescribed medication can inadvertently lead to addiction in a vulnerable population segment.

While traditional opioids target the brain's MOP receptor for pain relief (causing euphoria), the NOP receptor can enhance pain relief while suppressing MOP's addictive side effects. Tris Pharma's new drug is a first-in-class molecule that equally targets both receptors, aiming for effective pain management without the addictive high.

When comparing drugs with the same mechanism, like Alkermes' and Takeda's orexin agonists, a wider therapeutic index is a crucial differentiator. This superior safety-to-efficacy ratio allows for higher, more effective dosing without significant side effects, creating a competitive advantage and potential for broader market use.

The FDA's current leadership appears to be raising the bar for approvals based on single-arm studies. Especially in slowly progressing diseases with variable endpoints, the agency now requires an effect so dramatic it's akin to a parachute's benefit—unmistakable and not subject to interpretation against historical data.

The drug crisis may be perpetuated by a system that benefits from its existence, including pharmaceutical companies, bureaucracies, and consultants. The proposed solution of providing more prescribed drugs is framed as ironically profiting the same industry that helped cause the opioid crisis, creating a perverse incentive against recovery.

The opioid crisis wasn't a broad marketing failure but a hyper-targeted success. Purdue Pharma used data to identify and focus all its resources on the tiny fraction of doctors who were irresponsible prescribers. This asymmetrical strategy of targeting the 'super spreaders' was the key to the epidemic's takeoff.

Gaining a broad pain indication requires multiple, distinct clinical trials. Acute pain studies are short-term (e.g., 7 days) and use specific surgical models like bunion removal ('hard tissue') and tummy tucks ('soft tissue'). In contrast, chronic pain trials must run for months and target long-term conditions like diabetic neuropathy or lower back pain.