Tailoring biosimilar coverage policies to the client

The next wave of biosimilars, including Humira-, Eylea-, and Stelara-referenced products, is upon us.

In the U.S., 10 Humira-referenced biosimilars are on the market, nine of which launched in 2023. Until now the biosimilars have gained minimal traction. But that is changing, as the number of new prescriptions written for biosimilar versions of Humira soared to 36% from just 5% during the first week of April, after CVS Caremark altered its formulary.

CVS Caremark—the largest pharmacy benefit manager in the U.S.— removed Humira from its national commercial “template” lists of reimbursable drugs starting April 1. In its place, the PBM included the Humira-referenced biosimilars Hyrimoz, Hadlima and adalimumab-fkjp (a Biocon-produced unbranded product). Hyrimoz appears to be the most favored biosimilar. Similar moves have been signaled by the PBM Express Scripts and its parent company Cigna to be enacted this month, but this time Simlandi will be the most preferred biosimilar.

The FDA also recently approved two interchangeable biosimilars to Eylea, which will produce additional competition for the pharma’s blockbuster as key patent protections are set to expire.

And the biologic Stelara, which was selected as one of the first 10 drugs for Medicare price negotiations, will have its net price disclosed in September of this year in addition to facing biosimilar competition in 2025. The downward pressure on Stelara's price, but also Stelara-referenced biosimilars, will likely be significant.

For their large populations of covered lives who take products in the Humira, Eylea and Stelara-related therapeutic classes, payers will need to implement value-based coverage decisions that provide for the most optimal solutions for health plans and employers but also the lowest out-of-pocket costs for patients.

Improved access to biosimilars will offer patients expanded, less costly treatment options. For uptake to happen, payers must educate healthcare providers and patients on the value of biosimilars so that they are on board, whether they are designated by the Food and Drug Administration as therapeutically interchangeable or not.

Hyrimoz and Simlandi are therapeutically interchangeable and favored due to the formulary moves by CVS Caremark and Express Scripts, respectively.

The therapeutic interchangeability designation still plays a role in the U.S., because for biosimilars to be automatically substitutable at the pharmacy they must have proven interchangeability in addition to biosimilarity. As a result, physicians have expressed a preference for biosimilars that have the designation.

But for the many biosimilars that don’t have the therapeutic interchangeability designation, to boost their adoption manufacturers and payers must overcome this de facto regulatory barrier by informing healthcare providers and patients that proof of biosimilarity is sufficient.

Lyfegen can assist in the design of formularies tailored to clients' objectives. It can also accommodate information requests concerning which value-based arrangements are the most appropriate, given the scope of its library database as well as other client services.

If you wish to improve your negotiating leverage you can do so with real-world simulations for effective prescription drug contracts.

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Study: Out-of-pocket drug costs increasing 5.8% per year

A new study investigated how drug rebates affect out-of-pocket costs for health plan beneficiaries. Rebates lower costs for payers, but depending on the health plan, they can raise costs for the patient.

There is a lot of secrecy surrounding the final price paid for a drug at the pharmacy, as official data on drug prices does not factor in rebates or the end price for the patient. The rebates paid by manufacturers to pharmacy benefit managers is not publicly available. The study therefore sought out to understand the relationship between rebates and the prices paid by insurers and beneficiaries.

Results: The negotiated price, defined as the price paid by the beneficiary at the pharmacy and by the payer after rebates are taken into account, rose 4.3% from 2007 to 2020. However, the out-of-pocket price, or that paid by the patient at the pharmacy, rose 5.8% annually. Retail pharmacy prices increased 9.1% annually.

Implications: Low-income families may be especially impacted by plans with higher deductibles and lower premiums, as they are not prepared for surprise costs associated with cost-sharing. As the authors stated: “consumers with a low deductible or capped copays appear to be shielded from steep pharmacy price increases.” The main contributor to increases in out-of-pocket expenses were increasing deductibles and co-insurance payments.

The authors emphasize that drug price transparency is important for health policy recommendations and more work needs to be done to understand drug price inflation.

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Ongoing debate around GLP-1 drug coverage

Payers are seeing increased costs due to the demand of GLP-1 drugs. It’s estimated that 57.4 million adults under the age of 65 could be eligible for this class of drugs, based on currently approved FDA indications. There are 36.2 million people with an obesity diagnosis alone in the US.

If 10% of eligible adults take GLP-1 medications for weight loss, a $15 increase could be seen in the per-member-per month costs. This number rises to $50 if one-third of eligible adults start taking these drugs. Zepbound, manufactured by Eli Lilly, has a list price of $1059 per month, whereas Novo Nordisk’s Wegovy costs $1349 for a one month supply. However, last month, Eli Lilly announced a major price cut for their weight loss drug. Now, a 4-week supply of their drug at 2.5 mg will cost $399, whereas 5 mg vials will cost $549.

The measure is aimed at improving patient access, while reducing the risk of counterfeit medications. This price reduction was made without changes to insurance policies, and the drugs are available through LillyDirect, the company’s online pharmacy.

Not all insurers want to cover weight loss drugs like Zepbound, Wegovy, Mounjaro, and Ozempic, and innovative strategies are being explored to manage costs while keeping them available. One strategy is a utilization cap, which sets stricter standards for who is eligible. Another strategy is mentioned in Evernorth’s EncircleRX plan, which provides a 15% cost cap or a 3:1 savings guarantee when the medication is covered for weight loss.

The value of these drugs is still being investigated. If these medications can provide additional health benefits, there could be additional savings for payers down the road. Of note, studies have found reductions in cardiovascular death and sleep apnea when the drugs were used for weight loss.

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