Translation to impact on Amgen and the field:
- More subtypes means a small patient population and less revenue potential
- To the field, this means: 1) Less need for a large field force given the cost/benefit when the number of patients drops 2) More patient types to memorize and convince doctors they need to identify. This will be challenging as we all know doctors are lazy 3) More PA requirements to prove that you are targeting the right patients.
- The LDL benefit wasn't going to be a linear curve where once you hit "0" LDL, patients would live forever. LDL is only one piece of cardiovascular health and a patient's overall health. This drug isn't going to protect you from eating cheeseburgers all day. While there will be some clinical benefit, it may only be moderate. And the price to make it cost-effective may very well be below what Amgen wants to price at. Don't expect payer requirements to ease up and especially not until the price drops and for another 2 years when contracts get renegotiated. Payers will take their time when the ball is in their court.
- If a patient has a high baseline, they would likely go to a higher statin before PCSK9s. If the reason the statin is low is because of tolerability, then PCSK9s would be appropriate and that's not too much different from today. Got prove side-effects of statins first and have it documented.
- Keep in mind Sanofi/Regeneron will report first (Q4 2016) and depending on the data, there may be a strong class effect. I mean we are suing them because it's basically the same drug so I would expect similar results for Repatha.
All of this means is that the peak sales of Repatha may be more like Prolia, a $1.5B dollar drug WW but $1.5-2.0B in 2025 not 2019-2020 meaning it won't impact the biosimilar encroachment of Neulasta/Neupogen/etc. It may be a blockbuster by definition of over a $1B in sales but that won't be until 7+ years after launch. Remember Gileads HCV drug did $10B US it's first year.
With Kyprolis having reduced revenue expectations and a longer than expected ramp to the lower peak sales, it means Amgen will likely be desperate to buy Kite Pharma if it's the first to launch. Amgen is desperate to be a leader in oncology and missed the big play in immuno-oncology since the BiTe bi-specific platform is commercially limited. Amgen will likely have more layoffs, and on it's way to being merged with another desperate pharma company. Bob Bradway will have his deal and exit parachute while the community inTO dissolves.