More Adalimumab News: Abbvie Signs a Licensing Deal With Coherus, Coherus Sues Amgen for Patent Infringement

The multitude of companies that have lined up to sign 2023 licensing agreements with Abbvie on sales of Humira® biosimilars has grown again. The latest biosimilar maker added to the list is Coherus Biosciences.

Coherus adalimumab biosimilar

Coherus has an investigational adalimumab biosimilar that completed a phase 3 trial in 2017 in patients with plaque psoriasis and psoriatic arthritis. CHS-1420 was found to yield similar clinical outcomes compared with the reference product.

According to the press release from Coherus announcing the deal, the biosimilar will be available for marketing December 15, 2023. This will make it the eighth biosimilar version of adalimumab to enter the market, with Amgen entering first, in January of that year. As with the other deals signed by Abbvie, this signing concludes any patent litigation between the parties and Coherus will pay royalties to Abbvie on the sales of its biosimilar.

Coherus is expected to file a submission with the European Medicines Agency, though the timing of this filing has not been disclosed. Furthermore, it has not yet signed a deal with a marketing partner. In past conference calls, the biosimilar maker has indicated that it will not focus its resources on sales of its products outside the US.  

COHERUS SUES AMGEN OVER ADALIMUMAB PATENTS

To complicate matters a bit more, Coherus has launched a patent infringement suit against Amgen, believed to be the first of a biosimilar maker against another. Amgen’s Amjevita® was approved by the Food and Drug Administration in 2016, and has been for sale in the EU. Coherus intends to file for FDA approval in Q4 2019. Coherus contends that Amgen’s manufacture of Amjevita violates Coherus’ US patents 10,155,039; 10,159,732; and 10,159,733. These patents involve the creation of stable aqueous formulations of adalimumab.

Coherus seeks “damages adequate to compensate for past, present, and future infringement,” which could have implications for revenues from the European sales of Amgen’s biosimilar, because of its manufacture in the US. In addition, Coherus seeks an injunction from the court that permanently enjoins Amgen from engaging in further alleged infringement.  

Coherus President and CEO Denny Lanfear said in its January 25th press release, “Coherus recognized early on the central role intellectual property would play in advancing biosimilars to market. One important element of our IP strategy for advancing [CHS-1420] is reflected in the success we’ve achieved in patenting our innovations in the field of adalimumab formulation. We believe in the strength of our IP and we intend to protect it.”

Although generic manufacturers engaging in patent suits with competitors has occasionally occurred, this may be a first in the biosimilar community. I suppose it was only a matter of time.

An Update on Potential Biosimilars for Bevacizumab

Embroiled in patent litigation, the partnership of Amgen and Allergan have waited for the opportunity to launch Mvasi® since September 2017. During this time, the competition has not been stagnant, with Pfizer moving towards an FDA decision. The next 6 months may prove critical, but when will providers, patients, and payers have access to Avastin® biosimilars? That may be based more on guesstimates than on fact.

Avastin patent litigation

WHAT DO WE KNOW?

(1) Amgen and Allergan received its FDA approval for Mvasi (bevacizumab-awwb) September 17, 2017. The approval covered all of the reference product’s indications. The drug was approved for use by the European Medicines Agency in January 2018.

(2) In court documents filed during its patent battle with Genentech, Amgen had originally stated that it planned to begin marketing Mvasi once the last 8 patents it considered valid expired on December 18, 2018.

(3) Amgen then revised this potential launch date, according to the court filing, saying that it could launch several months earlier, on April 5, 2018.

(4) In either case, the launch has not occurred. According to the Purple Book, Avastin was first approved by the FDA February 26, 2004. That is approximately 15 years, and counting.

(5) The US District Court handling the litigation is expressing impatience with the back and forth between the two parties (read the Judge’s concluding remarks). A trial court date was set for June 2020.

(6) Pfizer completed its phase 3 trial for PF-06439535 in nonsquamous non–small cell lung cancer and filed for FDA approval in August 2018. An FDA decision is expected in the second quarter of this year.

(7) In November 2018, Boehringer Ingelheim completed its phase 3 trial in lung cancer for BI 695502.

(8) Samsung Bioepis completed its phase 3 trial in lung cancer in October 2018 (compared with EU-licensed Avastin).

(9) In addition, Centus Biotherapeutics is scheduled to complete its phase 3 trial in June 2019 as well.

WHAT WE DON’T REALLY KNOW

So much for what we know. Here are some things we know less well.

At a drug pipeline update at the Academy of Managed Care Pharmacy in October 2018, Express Scripts’ Aimee Tharaldson, PharmD, Senior Clinical Consultant—Emerging Therapeutics, offered a projected launch date of July 2019. In an E-mail communication with Biosimilars Review & Report, Dr. Tharaldson clarified that this estimate was based on the anticipated expiration of a key patent on Avastin that month.

Bevacizumab Biosimilars
Aimee Tharaldson, PharmD

When we contacted a senior Amgen executive, he stated that the company declined to discuss potential launch dates.

Goodwin’s Big Molecule Watch, which keeps a close eye on biosimilar-related patent litigation, does not list any ongoing suits between Genentech and Pfizer or Boehringer Ingelheim regarding Avastin (which may be surprising in itself).

We would anticipate that Pfizer will launch as soon as feasible, if they receive an FDA approval by June. Pfizer has an established record of moving their biosimilars quickly to market (e.g., Inflectra® [with Celltrion], Retacrit®, and Nivestym®).

Samsung Bioepis has not yet revealed their plans around an FDA filing for their investigational biosimilar of bevacizumab.

Boehringer had not yet filed a 351(k) application for approval of BI 695502. Comments by Molly Burich, Director, Public Policy: Biosimilars and Pipeline, in our interview last Fall, made it clear that the company is laser focused on bringing its adalimumab biosimilar (Cytelzo®) to market. In fact, this bevacizumab biosimilar was no longer posted on their pipeline at that time.

WHAT WE FOUND OUT

Today, Susan Holz, Director, Communications, Specialty Care, confirmed that the company decided that this agent was not in its strategic plans and it simply allowed the study to be completed. She said, “Boehringer Ingelheim made the decision to terminate all activities related to the BI 695502 program, a biosimilar candidate to Avastin. It is important to note that this decision was not based on any safety or efficacy findings with the investigational medicinal product BI 695502. Boehringer Ingelheim continuously evaluates our business portfolio and assesses potential strategic partnerships to help enhance our pipeline and development capabilities.”

Perhaps several of these unknowns will be resolved by the end of July, and the clouds will lift a bit. I suspect at that time, we’ll be much closer to biosimilar access for this biologic, which racked up $7 billion worldwide in sales in 2017.

Pfizer Pulls One Biosimilar Adalimumab Application From the EMA

Earlier this month, Pfizer notified the European Medicines Agency (EMA) that it was withdrawing one of its two applications for approval of its biosimilar adalimumab. 

According to Pfizer’s Director of Global Media Relations, Thomas Biegi, the company had submitted two applications for this biosimilar, one for a limited set of indications, and the other for the full array of autoimmune indications of the reference product Humira®. Pfizer has decided to focus on gaining approval for the full slate of indications and withdrew the other application. Under the “skinny label,” the product would have been marketed as Fyzoclad™ in Europe. The potential brand name of the biosimilar if  approved with all of the reference product’s indications was not disclosed. In the US, the biosimilar is still known as PF-06410293 .

Although Pfizer would not confirm its plans for the US filing, phase 3 trial results for PF-06410293 have been published, establishing the biosimilar’s equivalency to Humira in terms of efficacy, safety, and immunogenicity.

PrintPfizer noted in its December 5th letter to EMA that their decision was not related to safety or efficacy. No doubt, Pfizer is surveying the heavy competition for adalimumab in Europe today. Pfizer did not elaborate on why the decision was made to submit applications for both the skinny label and the full set of indications.  

Pfizer signed a licensing deal with Abbvie on November 30 to market this adalimumab biosimilar in the US. It will be the sixth biosimilar to enter the market in 2023, based on this deal. Therefore, Pfizer must believe that a sixth biosimilar entrant to the US market at that time may still yield relevant revenues and marketshare. 

According to EvaluatePharma, Humira US sales estimates (published in 2018) for 2020 will be about $21 billion. By 2024, this company believes Abbvie’s share of the revenue will be a bit more than $12 billion (which is not much different than today’s figures). If this guess is accurate, that leaves $9 billion for seven or so biosimilar makers. If the guess is very inaccurate, and Abbvie is left with far less revenue because of the competition and falling prices, then any number of adalimumab biosimilar manufacturers could attain more than $1 billion in sales. 

In other biosimilar news…Amgen has announced the filing of a new biosimilar version of infliximab. ABP 710 was the subject of a phase 3 trial in patients with moderate-to-severe rheumatoid arthritis; researchers concluded that the drug was equivalent to Remicade® in terms of efficacy, safety and immunogenicity. Today’s filing would put this biosimilar on a path to a late Q3 or early Q4 2019 decision by the FDA. If approved, ABP 710 would be the fourth infliximab biosimilar approved in the United States (Pfizer’s Inflixi® is also approved but will only be sold overseas).

 

This post was updated and corrected on December 18, 2018.

Pfizer Signs Licensing Agreement With Roche on Trastuzumab Biosimilar

With Pfizer expecting to hear back on its 351(k) resubmission on a trastuzumab biosimilar in early 2019, Genentech and its parent, Roche, may have been getting nervous about their competitor’s intentions. After all, Pfizer was willing to launch at risk with its marketing of Inflectra®, the infliximab biosimilar manufactured by partner Celltrion. In fact, it is the only biosimilar manufacturer that has gambled on an at-risk biosimilar launch.

According to a report in the Pink Sheet, a district court filing on December 4 noted that the two parties signed a settlement that will put an end to their patent litigation, and presumably allow Pfizer to market its biosimilar trastuzumab in the US at a future date. As in previous agreements signed by Roche, the terms are confidential, and launch dates and licensing fees are unknown.

trastuzumab biosimilar

A similar confidential agreement was completed between Mylan and Roche, for Mylan and partner Biocon’s Ogivri®, the first trastuzumab biosimilar approved by the Food and Drug Administration (FDA) in April 2017.

Three other trastuzumab biosimilars are also trying to reach the market. Amgen and Allergan received a complete response letter in June 2018, and have not yet announced when it might resubmit its 351(k) application. Samsung Bioepis is awaiting its initial decision on its trastuzumab biosimilar, filed in January 2018. Teva and Celltrion seem to be on the cusp of an FDA decision, after receiving their initial rejection in July 2017.

Roche has it covered, though. It filed patient litigation against Samsung Bioepis in September 2018 and partners Celltrion and Teva as well.

This is the very situation that the federal government, payers, and patients want to try to avoid, however. Licensing fees paid to the reference manufacturers may work to significantly inflate the drug’s price to the health system. The lack of transparency characterizing these agreements and the associated delays in launch are being decried by those patients and entities who can benefit from access to biosimilar competition. Herceptin was first approved in 1998. No one envisioned Genentech having 20+ years of marketing exclusivity.

In other biosimilarnews… MomentaPharmaceuticals, which signed an Abbvie licensing agreement for its biosimilar adalimumab, said in a statement that it will delay FDA filing M923 beyond 2019, which will help reduce its corporate expenditures. This delay should not impact the expected commercial launch date of November 20, 2023, according to the company.

Celltrion announced that it has filed an application for European Medicines Agency approval for its subcutaneous form of its infliximab biosimilar Remsima (US brand name, Inflectra®). This would provide the first subcutaneous injection formulation of infliximab.

Amgen Withdraws Membership From Biosimilars Advocacy Group

Journalist Dan Stanton reported that Amgen withdrew in September from The Biosimilars Forum, based on disagreements with the remaining eight biosimilar-manufacturing members and perhaps internal conflicts within Amgen.

Founded by 11 members (Allergan, Amgen, Boehringer Ingelheim, Coherus BioSciences, EMD Serono, Epirus Biopharmaceuticals, Merck and Co., Pfizer, Samsung Bioepis, Sandoz, and Teva), 8 now remain (B-I, Coherus, Fresenius Kabi, Merck, Pfizer, Samsung Bioepis, Sandoz, and Teva).

An Amgen spokesperson told Mr. Stanton, “As one of its founding members, Amgen supports the Forum’s mission to advance biosimilars and improve access to biological medicines. Although aligned on this mission, Amgen and the Forum disagree on how best to support the establishment and growth of a vibrant US biosimilars market.”

Areas of disagreement may have arose over the need for policies to support widespread acceptance of biosimilars and innovation in originator biologics, and the types of education and how it is disseminated to support uptake.

Amgen harbors a healthy pipeline of biosimilars as well as defending its brands against biosimilar competition. Whereas its Epogen®, Neupogen®, and Neulasta® are under active assault by biosimilars, its biosimilar versions of adalimumab (Amjevita®) and bevacizumab (Avastin®) are both approved but not marketed in the US.

As was pointed out by Mr. Stanton’s report, Amgen sponsored a YouTube video that supported use of naming conventions that differentate biosimilars from reference products (against the Biosimilar Forum’s advocacy) as well as implying that biosimilar switches can result in negative outcomes. Earlier in November, Forum-member Sandoz issued a statement in support of Pfizer’s Citizen’s Petition, complaining of inaccurate and misleading statements made by makers of reference biologics.

Amgen (as well as Pfizer and Boehringer Ingelheim) must walk a tightrope that other biosimilar-focused manufacturers do not. To be leading innovative drug makers, they systemize their efforts to research new medicines and acquire drug discovery firms, engage in lifecycle management, and aggressively protect their intellectual property. Yet both drug makers seem committed to the biosimilar side of their pipeline and growing the value of their biosimilar enterprises.

The Biosimilars Forum, formed in 2015, is an advocacy organization, competing in the policy space with the Biosimilar Council, which has members that represent a more diverse group (Apobiologix, AmerisourceBergen, Amneal Biosciences, Axinn, Biocon, Biorasi, Boehringer Ingelheim, Dr. Reddy’s Laboratories, Lupin, Momenta Pharmaceuticals, Mylan, and Sandoz). The Biosimilars Council is a division of the Association for Accessible Medicines.

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®).

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.

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.

Tidal Wave of Pegfilgrastim Biosimilars About to Hit Europe

We had mentioned the upcoming deluge of adalimumab biosimilars aiming to hit the European market in mid-October, but another biosimilar tidal wave may actually precede this.

The European Medicines Agency (EMA) has had an extremely busy week in the pegfilgrastim biosimilars arena. In addition to granting marketing authorization to Coherus Biosciences for its pegfilgrastim biosimilar, it has also approved the marketing of Pelgraz®, a pegfilgrastim produced by Accord Healthcare. In addition, the EMA’s Committee for Medicinal Products for Human Use has also recommended approval for three pegfilgrastim biosimilars—from Sandoz, Cinfa, and Mylan.

Mylan is the only drug maker with a marketed biosimilar version of pegfilgrastim in the United States. Its product Fulphila® hit the US market in early July. Coherus’ product, Udenyca™, is awaiting a November 2 decision from the Food and Drug Administration. Coherus is reportedly looking for a partner to market its pegfilgrastim biosimilar overseas, while it intends to market the product internally in the US. This means that Accord may have the first pegfilgrastim biosimilar to reach patients in the EU, though this advantage will be short lived should Mylan in particular gain approval.

In other biosimilar news…Boehringer Ingelheim announced positive results in its clinical study of Cylteza® versus Humira® in patients with moderate-to-severe plaque psoriasis. The study results were announced at the European Society of Dermatology and Venereology.

Samsung Bioepis Co., Ltd. announced that the FDA has accepted its 351(k) application for SB5, a biosimilar to adalimumab. Samsung is the fourth manufacturer seeking to enter the biosimilar market for Humira. Two have been approved (Amjevita® by Amgen and Cyltezo® by Boehringer Ingelheim) but are not yet marketed. A decision on Sandoz’s application is expected later this year.

Up to 5 Biosimilar Horses in the Race for Adalimumab in Europe: Heading for the Starting Gate

A long-sought dream in the United States will be a welcome reality in Europe this October: a stampede for Abbvie’s marketshare with adalimumab biosimilars and the savings that go with it.

Four or possibly five manufacturers will be lined up in the starting gate. Fujifilm Kyowa Kirin Biologics and its marketing partner Mylan have not yet received approval from the European Medicines Agency (EMA), but they do have a positive opinion from the Committee on Human Medicinal Products. They expect to hear a final decision from the EMA by October and hope to market it that same month, joining the other adalimumab biosimilar drugmakers.

Those who already have approval to race include:

Manufacturer/Marketing  Partner

Molecule Designation

Brand Name

Samsung Bioepis/Merck
SB5
Imraldi
Boehringer Ingelheim
BI 695501
Cyltezo
Amgen
ABP 501
Amgevita
Sandoz
GP2017
Hyrimoz
Adapted from: http://www.gabionline.net/Biosimilars/General/Biosimilars-of-adalimumab.

Several other manufacturers are also in the running, but will be late entries. They have completed phase III studies but their biosimilar adalimumab applications are not yet filed: Coherus, Pfizer, Fresenius, and Momenta.

adalimumab biosimilarsOn October 16, Abbvie’s Humira® patent expires and the starting gate should open. We’ve not seen anything similar in the US biosimilar market. Even when Abbvie’s patents expire in 2022 and agreements go into effect, this will be more of a staggered start, with Amgen having first crack at the market in January 2023 followed by Samsung Bioepis in June of that year. That is, unless another biosimilar manufacturer refuses to sign a licensing agreement with Abbvie and launches at risk earlier.

In any case, the savings seen in the EU should be immediate and if competition is not hindered, adalimumab biosimilar prices will be slashed. It will be interesting to see how this situation plays out, with one of the world’s biologic sales leaders.

It will certainly leave American payers dreaming about what could be, but will not be, for several years at least.