Pfizer Launches Retacrit, First Biosimilar Version of Epogen and Procrit

On November 13, Pfizer began marketing its biosimilar version of epoetin alfa. Pfizer launches Retacrit® at a 33.5% discount to Amgen’s reference product Epogen®.

Retacrit was originally developed by Hospira, which Pfizer acquired in 2015. Retacrit was one of the first biosimilars approved in the EU. It had a long journey to reaching the market in the US, however, including rejections by the FDA for manufacturing plant problems. It was finally approved by the FDA on May 15, 2018. The Retacrit launch comes 180 days after the approval.

The wholesale acquisition cost (WAC) of this biosimilar will be $11.03 per 1,000 units/mL, which represents an even steeper discount (57%) to Epogen’s sister product, Procrit® by Johnson & Johnson.

For Pfizer, this represents their third biosimilar being marketed today (along with Inflectra® and Nevistym®).

Udenyca to Launch January 3, Same WAC as Mylan’s Fulphila

Coherus Biosciences surprised many on its third-quarter earnings call late yesterday. It will rely not on a lower price than its biosimilar competitor to gain marketshare after Coherus’ Udenyca launch, but on its ability to pull through on its patient and provider services and supply chain to gain significant marketshare for its biosimilar version of Neulasta®.

This is not to imply that Coherus will not offer contracts to group purchasing organizations (GPOs), hospitals, and payers.  The company intends to do so. However, the wholesale acquisition cost (WAC) for Udenyca® will match that of Mylan’s Fulphila®—$4,175 per vial, or a 33% discount from Amgen’s reference product. Denny Lanfear, CEO of Coherus added that the company’s contracting plans “will deliver additional value to payers.”

Jim Hassard, Coherus

AWAITING HCPCS CODING

Unlike other biosimilar manufacturers, this is their first product to reach the market. Not only was manufacturing and production a priority, but company infrastructure had to be ready for launch. Although Coherus pointed out that the sales force for Coherus is fully in place, they are holding back the Udenyca launch until the Center for Medicare and Medicaid Services (CMS) designates a Q code for claims and billing purposes. Therefore, the goal is a Udenyca launch date of January 3, 2019.

Jim Hassard, Vice President for Marketing and Market Access, emphasized that “Our overall launch strategy goes beyond pricing, to reliable supply and services. We’re committed to world-class execution and salesforce effectiveness.” The company’s Coherus Complete, patient and provider service site, is operational, and this will include copay support for eligible patients. Mr. Hassard stated, “This price is attractive to payers without diminishing our value proposition. We can deliver significant savings to the health system versus Neulasta.”Coherus Biosciences

CAN UDENYCA GRAB SOME ONPRO MARKETSHARE?

One interesting statement made during the call was the expectation that Coherus will go after some of Neulasta Onpro’s share of the market. Amgen’s on-body injector accounts for about 60% of all Neulasta utilization today, “but this growth has flattened out,” Chris Thompson, Vice President of Sales, emphasized. “We’re looking at the whole market, not just prefilled syringe market,” he said. “We think we’ll be able to sell through the Onpro market,” meaning that their pricing and services will attract some of this marketshare. In fact, Coherus executives believe that biosimilars may eventually garner nearly 70% of the pegfilgrastim market.

Coherus believes that there is pent-up demand for the biosimilar in the hospital segment today, which is why GPOs may represent promising contracting opportunities. They are seeking parity positioning at the payer and pharmacy benefit manager level.

This sounds fairly reasonable. Yet the vast majority of biosimilar consultants and payers with whom I had communicated had anticipated that Coherus would launch with at least a modest WAC discount relative to Mylan’s Fulphila. On the conference call, the investment banking participants wanting information on the Udenyca launch seemed caught off guard as well.

UDENYCA REVENUE TO SUPPORT COHERUS FOR NOW

Perhaps this strategy gives Coherus ample room for contracting while retaining a respectable net cost. Mr. Thompson said, “We’ll roll out a comprehensive contracting strategy for GPOs in the next week or two. It will be competitive and designed to win.”

It may need to be. Relying on better services and perhaps even a better supply chain (albeit one that is brand new) may not be sufficiently persuasive to hospital and payer P&T Committees. And Coherus needs to generate revenue from its sole product to feed its new sales team, new product development, and hungry investors.

Momenta Signs Licensing Deal With Abbvie. Did It Have a Choice?

We previously reported that Momenta Pharmaceuticals reevaluated its biopharmaceutical strategy going forward, deciding to move forward only with its investigational adalimumab and aflibercept biosimilars. Yesterday, Momenta announced that it has joined the long queue of pharmaceutical manufacturers signing a biosimilar licensing deal with Abbvie, which will allow commercialization of M923, its biosimilar to Humira, should it obtain regulatory approval. Momenta’s licensing deal is the fifth one signed by prospective biosimilar marketers in the US.

This agreement was pretty much a no-brainer for Momenta. The company did not have the stomach for attempting either an extended patent fight or an at-risk launch. However, the biosimilar licensing agreement only allows Momenta to market its adalimumab biosimilar in the US after December 2023, which will make it the fifth Humira biosimilar that will launch under the licensing agreements (Table). The main patents for Humira have expired in Europe, and these agreements have generally allowed the European launches to occur as of October 16 of this year.

Of the manufacturers signing biosimilar licensing deals with Abbvie , only Amgen and Sandoz have earned FDA approval for Amjevita® and Hyrimoz®, respectively. And Boehringer Ingelheim is still duking out patent litigation with Abbvie in the courts over its approved biosimilar agent Cytelzo®, for which it hopes to receive an interchangeability designation. The second through fifth agents entering the fight will be likely pounding away at subsequently smaller slices of revenue.

Perhaps the most frustrating part is that Abbvie is running a lucrative game; it will collect royalties from all of these manufacturers in 2023 and beyond, which will help offset declining marketshare from its biggest revenue contributor.

 

In Abbvie’s Web: Who Has Signed Licensing Agreements for Biosimilar Adalimumab?

Company/Partner

Drug Name

Launch Date

Amgen

Amjevita*

January 2023

Samsung Bioepis/Merck

SB5

June 2023

Mylan/Fujifilm Kyowa Kirin Biologics

Hulio

August 2023

Sandoz

Hyrimoz*

September 2023

Momenta

M923

December 2023

*Received FDA Approval.

Note: This post was revised and corrected, November 8, 2018.

Sandoz Decides Against Marketing Rituximab Biosimilar in US

On October 30, Novartis announced that it was culling its investigational drug pipeline and dropping 20% of its development programs. Just three days later, its subsidiary Sandoz announced that it would halt its efforts to obtain approval for its biosimilar version of rituximab from the US Food and Drug Administration (FDA). The decision by Sandoz to halt its rituximab biosimilar filing efforts seems to have culminated from Novartis’ announcement and FDA actions.

Sandoz had received a complete response letter on May 2, 2018 in its attempt to obtain approval for use for Rituxan®’s oncologic (but not autoimmune) indications. According to Sandoz’s press releaSandoz Halts Rituximab Biosimilar Filingse, the FDA had asked them for additional information before providing a new decision. Sandoz did not specify the type of data sought in the request, although the company’s Global Head of Biopharmaceuticals, Stefan Hedriks, hinted that additional studies were involved. He stated, “We appreciate the important conversations with the FDA, which have provided specific requirements for our potential US biosimilar rituximab, but believe the patient and marketplace needs in the US will be satisfied before we can generate the data required.” Generally, that means more than a re-analysis of existing data. This seems to be the principal reason for its decision to development and the rituximab biosimilar filing.

However, Rituxan is already available in several major markets, including Australia and New Zealand, the European Union, Japan, and Switzerland. Sandoz received US approval for three biosimilars, but only Zarxio® is currently marketed. Next up for Sandoz will be a refiling for FDA approval of its pegfilgrastim biosimilar. The company announced the original FDA rejection of this product in July 2016.

Coherus Gets FDA Approval for Its Pegfilgrastim Biosimilar

With the Food and Drug Administration (FDA) approval today of Coherus Bioscience’s Udenyca™ (pegfilgrastim-cbqv), the second pegfilgrastim to compete with Amgen’s Neulasta®, much attention will be now focused on the company’s November 8 earning call.

The FDA approved Udenyca on the basis of a supportive analytical similarity package, but with phase 1 data only. Over 600 healthy subjects were given the agent to test its pharmacokinetic, pharmacodynamic, and immunogenicity safety.

We should learn a great deal by the end of the week about the nature of the competition for the injectable pegfilgrastim marketplace into 2019. In the press release announcing the approval, the company said it will reveal its launch plans, including pricing, during its week’s call. On Monday, November 5, we should hear the first information about whether Mylan’s first-to-market entry, Fulphila®, has gained some traction against the injectable form of Neulasta. Mylan launched Fulphila at the end of July.

In a previous post, we discussed how Amgen’s Neulasta Onpro® patch has already captured upwards of 80% of the pegfilgrastim business. Because of the convenience of the patch formulation, it would be surprising if Onpro’s share of market eroded significantly. However, Amgen must ensure that the net cost difference between the biosimilars and Neulasta Onpro is not noteworthy. Otherwise, payers’ can be expected to try to disadvantage Onpro through step edits or greater patient cost sharing. That would take a sizable bite out of Amgen’s large slice of the $4 billion pegfilgrastim pie.

The FDA approved Udenyca for the following indication: to decrease the incidence of infection, as manifested by febrile neutropenia, in patients with non-myeloid malignancies receiving myelosuppressive anti-cancer drugs associated with a clinically significant incidence of febrile neutropenia. It was not approved for the mobilization of peripheral blood progenitor cells for hematopoietic stem cell transplantation. This indication language does not differ from that for Fulphila. Neulasta has the additional indication of increasing survival in patients acutely exposed to myelosuppressive doses of radiation.

Undenyca was also approved for sale in the EU, although Coherus has not launched there, awaiting a marketing partner.

A Third Biosimilar Adalimumab Approval in the US and Potentially Huge Humira Price Discount in Europe

The Food and Drug Administration (FDA) announced yesterday the approval of adalimumab-adaz from Sandoz. The new agent, dubbed Hyrimoz™, will not be launched in the US until 2023. The approval of Hyrimoz is the third for Sandoz (but only one, Zarxio®, is available for prescription in the US).

The FDA approval of adalimumab-adaz covered several indications, including adult Crohn’s disease, ankylosing spondylitis, juvenile idiopathic arthritis, plaque psoriasis, psoriatic arthritis, rheumatoid arthritis, and ulcerative colitis. The drug’s approval was based partly on the findings of a phase 3 clinical trial in patients with chronic plaque psoriasis, in which the biosimilar was found to be noninferior to the originator product Humira® in terms of efficacy (i.e., PASI 75 score) and safety.

Hyrimoz is the third  approved adalimumab biosimilar, none of which have been marketed due to patent litigation.  Abbvie has signed licensing agreements with Amgen and Samsung Bioepis to delay US launches.

HUMIRA PRICE DISCOUNT IN THE EU

This biosimilar is being marketed in the EU, competing with several others for the Humira marketshare overseas. However, signs of real competition are heating up in Europe, as Abbvie has offered a Humira price discount of as much as 80%.

According to an article published in Fierce Pharma, Abbvie is hoping to squash the biosimilar competition and prevent it from gaining valuable European experience ahead of US launches in 2023. The article cited a report by Bernstein analyst Ronny Gal, indicating that even at an 80% discount, Humira will still be profitable for Abbvie. “The objective is to defend the US market by denying the biosimilars in-market experience [in Europe] and then arguing the Europeans ‘chose’ Humira over the biosimilars for quality reasons beyond price,” according to Gal’s report.

On the other hand, this puts the biosimilar makers in a tight spot on the continent. They need to earn back their R&D costs and may be unwilling to face an immediate low-profit reality. Revenues within the EU for Humira are $4 billion. Even if it offered tenders of 80% for every member country (and they were accepted), revenues would still be in the range of $800 million. This would drastically reduce the size of the revenue slices for the European biosimilar competitors. It could be possible that some may drop out of the market, at least until the time of the US launches.

A Blueprint for Successful Infliximab Biosimilar Switching

Payers have not been quick to add biosimilar infliximab to their drug coverage. Yet, biosimilar switching is the objective for most health plans and insurers who are thinking about long-term savings. Even if they do not exclude the reference product Remicade® from coverage, some health plans, like Kaiser, have been moving forward in this effort.

At the Academy of Managed Care Pharmacy’s Nexus 2018 meeting in Orlando this week, two clinical pharmacy specialists from Kaiser Foundation Health Plan of the Northwest described what may be a best practice in converting patients to biosimilar Inflectra®.

RELEVANCE OF BIOSIMILAR SWITCHING AT THE PLAN LEVEL

Kayla Hubrich, PharmD, emphasized the importance of patient education, and patients’ reliance on Google for research. She said, “When patients will turn to Google and type in ‘Should I switch to an infliximab biosimilar?’ the first search result they see is an ad for ‘Finely Tuned,’ a Janssen website.” This, of course, discourages the use of biosimilars.

At Kaiser Foundation Health Plans, coverage decisions are made at a national level for its 12.5 million members and implemented at the regional plan level, according to Lynsey Smith, PharmD. The health plan made Zarxio® its preferred filgrastim product in 2016, and registered 96% of all filgrastim dispensings in self-injected settings, and 100% of all clinical administrations for this biosimilar.

Biosimilar switching
Source: Kaiser Foundation Health Plan

Obtaining that level of use means that not only treatment-naive patients were using Inflectra, but also those using Remicade in the past. Dr. Smith outlined the key steps in this conversion, starting with the providers. “For new starts,” said Dr. Smith, “the tactic was just to have the doctor choose the biosimilar” using tools incorporated into the electronic health record that encouraged them to order the preferred product. Concerning those patients needing to be converted from the reference product, Kaiser asked the prescriber to sign a ‘Therapeutic Equivalency Protocol’ agreement, which authorized the plan to make the switch. The biosimilar switching agreement was voluntary, and virtually all the rheumatologists, dermatologists, and gastroenterologists signed. “One GI out of 20 declined to authorize the switch in patients already receiving Remicade,” she said.

Kaiser emphasized patient notification and education. A letter, signed in their doctor’s name, was sent to each patient at least 2 weeks before the conversion date, explained Dr. Smith. Clinical Pharmacy Services was enlisted to answer patients’ questions via phone and E-mail. Patients were also given informational handouts about the biosimilar switching program at their infusion center.

“During this process, the clinical pharmacists received 30 to 40 calls,” she said. “The patients’ main concerns were whether the product was going to work as well as their old drug and whether they would receive the same copay assistance as before.” Active patient outreach was not conducted after the switch was instituted. Any patients reporting issues or concerns were triaged through Clinical Pharmacy Services.

Dr. Hubrich added that infusion center pharmacists reviewed all patients scheduled for infusions one week ahead of their appointment. The infusion center confirmed that the provider signed a TEP document, that patients were sent the notification letter, and that the infliximab order changed to Inflectra. Kaiser also developed a nurses’ protocol for the biosimilar switch and worked to educate practice staff about the program.

 

INFLIXIMAB SWITCHING PROGRAM RESULTS

The conversation program began on May 1, 2017, with dermatologists and rheumatologists, focusing on patients who were getting their first infliximab treatment. Dr. Hubrich stated that notification letters were sent to 158 patients. Three weeks later, current patients began to be switched from Remicade to Inflectra. The GI conversion began on May 11, 2017 with treatment-naïve patients, and letters were sent to 188 adult patients (as Inflectra did not have the pediatric ulcerative colitis indication). Active therapeutic switching began in September. “The one GI who declined to sign the TEP agreement joined in 2018,” said Dr. Hubrich. This is likely because of the experience of this doctor’s peers.

A total of 22 patients (6.4%) across specialties reported adverse events, with nine being changed back to reference product (2.6%), five changed to a different medication class, four resulted in a dosage increase, one patient decided to discontinue therapy, and three continuing biosimilar infliximab treatment without any change. They did find that 12.8% of patients experienced some “nocebo” effects, despite the fact that “no statistically significant changes in effectiveness and safety were observed after a medican of four infusions in 9 months of study.”

Dr. Smith asserted that communication was critical to the success of the program, with patients and providers. The provider’s agreement to sign the TEP document was a necessary step, and was accepted by all Kaiser’s specialist providers.

It must be emphasized that Kaiser has a different magnitude of leverage over its physicians than a network plan like Aetna or CIGNA. Yet a biosimilar switching program like this could be a blueprint for other integrated health plans to move forward if they desire to move patients quickly and efficiently to biosimilar therapy.

Federal Policy and Biosimilars: A Conversation With Molly Burich, MS, Boehringer Ingelheim: Part 2

In part two and the conclusion of this interview, Molly Burich, MS, Director, Public Policy: Biosimilars and Pipeline, speaks to Boehringer Ingelheim’s progress in Cytelzo interchangeability studies, its plans for the product in Europe in the face of several adalimumab biosimilars launches in the EU, and also the complexity inherent in CMS’s plans to move biologic agents from part B to part D coverage.

Molly Burich, Boehringer Ingelheim
Molly Burich, MS

BR&R: Boehringer Ingelheim indicated that it started the study on Cytelzo interchangeability last year. What’s the progress on this effort?

Burich: The trial is continuing to progress. It’s a high bar and a big commitment. We will certainly publicize relevant information in due course.

We feel that for Cyltezo, in particular, interchangeability is an important component. It may drive switching. The study will also show a complement of clinical data around that topic. We hope to have information to share in the future. [Editor’s Note: The VOLTAIRE-X study, which will evaluate the effect of switching between Cyltezo and Humira in patients with plaque psoriasis, has an estimated primary study completion date of March 2020 and full study completion of July 2020, according to ClinicalTrials.gov]

BR&R: Speaking about Cyltezo, I have a question about the marketing floodgates being opened in the EU for adalimumab biosimilars. At least 4 are being launched in the EU after the October 16th patent expiration. Does Boehringer Ingelheim plan to join the fray?

Burich: Boehringer Ingelheim had planned to bring Cyltezo to patients in the EU. Due to the patent litigation with AbbVie in the US, we will not commercialize Cyltezo in the EU. Boehringer Ingelheim will continue all activities for our biosimilar in the United States. We are committed to making Cyltezo® available to U.S. patients as soon as possible and certainly before 2023.

PART B TO PART D TRANSITION BY CMS 

BR&R: Medicare has indicated that it will move many Medicare part B drugs into part D. To what extent will this affect biosimilar access and utilization?

Burich: It is a very hot topic these days. We have some pretty significant concerns on conceptually around what it means for moving from part B to part D. The key reason revolves around the access question, including patient cost sharing.

A move from part B to plan D could mean that patient cost sharing may jump significantly. We know that part B beneficiaries have wraparound or Medigap coverage to protect them from cost sharing issues. In part D, there is not such protection. Aside from the biosimilar question, the move from part B to part D really has to be explored and discussed a lot more to understand how we can ensure that patient access is not reduced through high cost sharing. That needs to be ironed out as it applies to any part B drug before we can speculate whether this is an opportunity for a biosimilar. Time will tell what that really looks like.

Last month, CMS released the Medicare Advantage guidance allowing for step therapy for part B drugs. That could be a potential opportunity for biosimilars, if we know how some of the access concerns will be addressed. We just don’t have the full picture at this point.

BR&R: Is it possible that this move to part D might spur some payers to create biosimilar tiers? These would require lower cost sharing for patients compared with reference biologics, assuming contracts with the reference manufacturer permits it.

Burich: In my opinion, we’ll need access to more biosimilars before we see a lot of that activity. It’s hard to foresee what big benefit design changes will be coming, but it’s certainly possible. We’ll need a mature market in the US before that will happen.

BR&R: The devil is in the details with this switching issue but there’s also an access issue. Plans can make midyear formulary changes, this would then apply to biosimilars and reference drugs covered under part D.

Burich: This is an important issue. The latest guidance that we saw from CMS, which is now a couple of years old, allowed positive formulary changes. Adding the biosimilar to a formulary is always allowed mid-year. The question involves removing an originator product or changing its tier.

CMS has said that those situations would be reviewed on a case-by-case basis. These rules preventing negative formulary changes midyear are there to protect patient access. It will take CMS some time to iron out what the process looks like for this type of potential formulary change midyear. For now, we’ll have to rely on CMS’s case-by-case review

BR&R: In general, payers do not consistently fund and manage self-injectable specialty drugs in the same way. In some cases, they cover these agents under the pharmacy benefits, medical benefit, or even both. Further, they can be managed under either benefit as well. However, it seems we are moving toward pharmacy management of these agents. How does this affect biosimilar access, if at all?

Burich: There will be more benefit design changes once we have a more robust biosimilar market. More specifically, when we have pharmacy benefit biosimilars.

We’ve mentioned CMS’s intention to move more of these products from part B to part D. It is possible that commercial plans will have different benefit designs and treat injectables differently than Medicare does. We want to make sure that biosimilar or not, the access piece is really at the center of those changes; it will not be beneficial to the biosimilar market if this move causes significant patient access issues (e.g., actual access to this drug or big swings in cost sharing). All of those things will be equally problematic for a biosimilar as they are for an originator, so we want to make sure we have our eye on the access component.

BR&R: Health and Human Services Secretary Azar and FDA Commissioner Gottlieb have loudly stated their desire to improve biosimilar patient and market access. The Biosimilar Action Plan was released earlier in the summer to that end. What is the one aspect of the Biosimilar Action Plan that appeals most to manufacturers like Boehringer Ingelheim?

Burich: The aspect of education, tackling both proactive education and countering misinformation is very critical from our perspective. We’d like to see more materials moving forward that focus on switching and on interchangeability. We haven’t really scratched the surface on those topics from an education standpoint.

The reality is that the FDA has an important voice and bringing validity to educational materials is so critical for patients, physicians, and health plans as well. We hope that the FDA will stand by its public commitment to release more reading materials, more videos, more web info, etc. It is especially important at this juncture; we are seeing misinformation and a lack of clarity on certain things.

IS THE BIOSIMILAR ACTION PLAN ACTIONABLE?

BR&R: One of the biggest barriers to biosimilar access is the patent thickets. The rebate trap problem is another story. What power does HHS have to clear out the patent thickets? Or is this an area that can only be addressed by Congress?

Burich: This is the most difficult part of the Action Plan, because it is unclear who can truly implement change and what change might be realistic. We have to protect true innovation that’s important to all stakeholders.

At the same time, there’s no question that patent litigation is the leading barrier to biosimilar accesss. Some makers of branded pharmaceuticals have constructed patent thickets so that they could sustain prolonged, expensive litigation against competitors, while stifling competition. Humira is the prime example: More than 15 years after the molecule was approved , no biosimilar is being marketed – in the U.S. What the answer is and which government agency can effect change has yet to be determined.

BR&R: That change won’t come quickly, in any case. Whether enacted by Congress or the Office of the Inspector General, which may have to reinterpret the safe harbor statutes, this may only first apply to the second-generation of biosimilar agents, beyond 2021 perhaps. It seems likely that this will be a very deliberate process.

Burich: I do believe Commissioner Gottlieb is thinking about both how to get more products launched in the short term and also the long-term vision of a sustainable biosimilar market. That is such an important part of the problem.

We were very happy that the FDA had their public hearing. The FDA panel asked a lot of thoughtful and probing questions to the individual speakers. We are fully supportive of the Action Plan and its individual components. If we saw all of those things come together and start to see action, including finalizing the interchangeability guidance and providing more education, the biosimilar market would be in a far better place.

BR&R: We say that biosimilar manufacturers can make their products attractive to payers, but payers need to play a positive role here. Commissioner Gottlieb has said that payers have to help in this process by taking the long-term view, by not automatically sticking with the reference product because of the rebate revenue. They have to be open to using the biosimilars and nurturing the health of the industry. Is there anything else the biosimilar manufacturer can do to convince payers to make this market viable?

Burich: Certainly, biosimilar manufacturers have to approach these payer negotiations and conversations with competitive and innovative contracting approaches. That does not just include pricing but also how do you drive volume and true savings to both payers and patients. That kind of innovative approach is necessary, because we know it’s a challenging market.

Biosimilar manufacturers have to look at the whole picture as well. That means providing targeted patient/physician services to really help ensure that the switching experience is seamless for the patient and the physician so that biosimilar utilization is not viewed as something very disruptive.

Word From the Adalimumab Front: A Conversation With Molly Burich, MS, Boehringer Ingelheim: Part 1

In the first portion of a two-part interview with Molly Burich, MS, Director, Public Policy: Biosimilars and Pipeline, Boehringer Ingelheim, we cover the challenges of driving biosimilar uptake, as well as the unique situation that has focused this manufacturer’s attention on biosimilars and interchangeability. 

BR&R: The viability of the US biosimilar industry is being challenged if companies cannot rely on revenue from switching, especially for the autoimmune category.

Molly Burich, Boehringer Ingelheim
Molly Burich, MS

Molly Burich: Yes, biosimilar uptake is certainly going to be dependent on switching. But switching comes in a few different types. One case involves patients who are going to be switched to a therapy with a different mechanism of action. Perhaps their existing therapy no longer works (or didn’t work in the first place).

Another case is medication substitution by the physician. The doctor drives that decision to switch the patient either to a biosimilar or to an interchangeable.

Lastly is automatic substitution, which will come as a result of interchangeability and enabled by state laws. However, that is only in play once a product gains the interchangeability designation.

All of those are important components, but certainly switching overall is an important part of the market viability.

BR&R: When we’re talking about automatic switching, multiple stakeholders are involved, including the prescribers, pharmacies, payers, patients. And none of it matters if we don’t have an interchangeable product or even final guidelines from the FDA on interchangeability. In retrospect, should we have made automatic switching for biosimilars based on something other than interchangeability?

Burich: There are a lot of stakeholders involved and this is. why multiple ways of switching will likely occur. In terms of switching, interchangeability allows pharmacists to switch one reference product prescription for an interchangeable one without intervention of the physician at the front end—pending state laws of course. The physician must be notified of the change.

In our opinion though, automatic switching is certainly not the only way to drive uptake of biosimilars. We believe physician-driven switching and payer-drive substitution via formulary decision-making are very important to drive the uptake of biosimilars.

BOEHRINGER INGELHEIM’S SINGULAR PRODUCT FOCUS

BR&R: Biosimilar utilization, and the overall market, has been growing slowly since the first biosimilar approval. Prospective biosimilar manufacturers have tended to jump into the market with both feet, filling their pipelines with multiple biosimilar agents. Boehringer Ingelheim may be the only major manufacturer with a single biosimilar listed on its pipeline web page. Is the company in a wait-and-see mode, to see if the industry will survive? Or is Boehringer making further investments in biosimilar development behind the scenes?

Burich: We are constantly in an evaluation process of our portfolio. Obviously, we are focused on our approved biosimilar Cyltezo® (adalimumab-adbm) and also on interchangeability, here in the U.S. That is our focus area. We believe that the introduction of biosimilars will improve the lives of patients, as well as contribute to the quality and economic sustainability of healthcare systems.

INTERCHANGEABILITY: MISUNDERSTOOD BUT NO SILVER BULLET

BR&R: The issues around interchangeability are particularly frustrating. At the time the BPCIA was written, was the concept of interchangeability (which does not exist in EMA regulations) an attempt to give prescribers and consumers a warm and fuzzy feeling of an AB-rated generic?

Burich: It’s an important question. As you said, when the BPCIA was written, interchangeability was viewed as a sort of silver bullet. The reality is that interchangeability is an important concept, but perhaps it makes more sense for only certain products. As we gain experience in the biosimilar market, we’re starting to see this.

We believe in the concept of interchangeability and in what the FDA has put forth about interchangeability. We do think there are questions about how an interchangeable product may be perceived compared with one that is not interchangeable. In our comments to the FDA, we encouraged the FDA to come out with educational materials that are geared toward talking about interchangeability, and talking about switching. These are all important questions and need to be addressed for the broad stakeholder community. The FDA is obviously best positioned to bring that type of education in the next round of materials they develop.

BR&R: We’ve heard a great deal about people mischaracterizing interchangeable products as being superior to biosimilars (for the same reference product). Why is this differentiation so important?

Burich: This issue speaks to education. All people engaging in the biosimilar space must realize that the designation of interchangeability does not mean it’s a higher-quality, safer, or more-efficacious product. It means that the manufacturer has conducted additional studies required by the FDA to enable that automatic substitution at the pharmacy level.

The FDA has issued clarifying pieces of information and education on their website about this, but there is room for more. The reality is that when a drug is approved as a biosimilar, it has attained the foundational designation proving that the drug is highly similar to the reference biologic, without any clinically meaningful differences. On the other hand, gaining the interchangeability designation is about conducting trials of multiple switches within the patient and expecting the same results in any given to patient. Those are two different distinctions. It proves something different, allowing for automatic substitution to occur.

In part two and the conclusion of this interview, which will be published in a separate post, Molly Burich speaks to Boehringer Ingelheim’s progress in Cytelzo’s interchangeability studies, its plans for the product in Europe in the face of several adalimumab biosimilars launches in the EU, and also the complexity inherent in CMS’s plans to move biologic agents from part B to part D coverage. 

Biosimilar Step Therapy for Medicare Part B: Does This Make Sense?

The Centers for Medicare and Medicaid Services (CMS) has decided drugs covered under Medicare part B may be subject to step therapy, if so desired by Medicare Advantage plans. UnitedHealthcare has become the first to publicly implement step therapy policies for these drugs. However, biosimilar step therapy is not the typical utilization management tool that industry executives are used to seeing.

biosimilar step therapyTraditional step therapy or step edits for prior authorization policies are typically used to require the use of an effective, low-cost drug class before trying a more-expensive treatment. For example, a plan might have a step in place before a patient can receive Humira®, such as requiring documented failure on other disease-modifying anti-rheumatic drugs, like azathioprine or methotrexate. This makes very good sense when supported by practice guidelines or treatment pathways, based on solid supportive evidence.

For biosimilar manufacturers, the perspective on the revised CMS policy, seems to imply trying the biosimilar before receiving the branded originator product. This biosimilar step therapy would make very little sense. A doctor would not be practicing evidence-based medicine if he or she prescribed Remicade® to a patient after failure of Renflexis®. There is no evidence to show that the biosimilar will work in a patient who did not receive adequate clinical benefit from the reference product (and vice versa). Similarly, there is no information to show that a patient who has an adverse effect while taking Remicade will not have that adverse effect after injecting with Renflexis (or vice versa). In other words, after failing one, a new mechanism of action should be tried, not a product with a very similar structure. This may be a different argument, if a subcutaneous form of infliximab was introduced, and this might be reason to step the infusible form through this drug.

In United’s announcement, they are clearly seeking to increase biosimilar utilization, as designated preferred part B agents, at the expense of Remicade use, the nonpreferred agent. Therefore, it may make more sense that new patients will have to use a biosimilar before being prescribed the reference product. Step therapy in this case is almost an aside.

Ironically, the Department of Health and Human Services has also expressed its desire to move part B agents like self-administered injectables to part D. This may not apply to infliximab, as it is given as an in-office infusion. Should this be the case, plans will have many pharmacy tools at their disposal beyond biosimilar step therapy.

In other biosimilar news…Fresenius Kabi has signed an agreement with Abbvie to delay its adalimumab biosimilar market entry in the US until 2023. The manufacturer is currently trying to secure European approval for the product. A 351(k) application has not yet been filed by Fresenius in the US.