Shire cedes biosimilar field

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Shire’s decision to shed the legacy biosimilars portfolio of Baxalta is a sensible move given the group’s shift towards rare diseases. Sales and marketing forces attempting to appeal simultaneously to highly specialised physicians and cost-conscious payers would be working at cross-purposes.

Moreover, even in advance of major biosimilar launches in the US, scale looks to be an important indicator of success, with Amgen and Pfizer now looking like they will take a big chunk of sales. Meanwhile, the victims of Shire’s clearance, Momenta Pharmaceuticals and Coherus Biosciences, saw shares rise yesterday, as the decision could clear the way for more dealmaking (see table below).

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Shire returned to Momenta rights to Bax 2923/M923, a Humira biosimilar, and to Coherus rights to BAX 2200/CHS-0214, an Enbrel lookalike. Coherus said it was not responsible for any payments now or in the future to Shire, while Momenta stated that Shire would be responsible for funding M923 development for another year.

Neither agent is likely to be first to market. Novartis’s Enbrel copy Erelzi received approval in late August, followed by Amgen’s Humira biosimilar Amjevita earlier this week. Both are held up by patent issues – the trial date to resolve Enbrel’s intellectual property is not until April 2018, and the sector is likely to hear that AbbVie is suing to protect its Humira patents soon.

Humira and Enbrel biosimilars to watch
Sales ($m)
Project Company Status 2016 2017 2018 2019 2020 2021 2022
Humira Amjevita (ABP 501) Amgen Approved* - 45 166 326 500 681 829
SB5 Biogen/Samsung Filed** - - - - - - -
ONS-3010 Oncobiologics Phase III - - - 7 69 154 242
GP2017 Novartis Phase III - - - - - - -
FKB327 Kyowa Hakko Kirin/Fujifilm Holdings Phase III - - - - - - -
adalimumab Mylan/Biocon Phase III - - - - 13 24 34
BAX 2923/M923 Momenta Pharmaceuticals Phase III - 1 5 15 32 47 56
adalimumab Coherus BioSciences Phase III - - 9 8 18 21 23
PF-06410293 Pfizer Phase III - 139 237 310 383 463 549
BI 695501 Boehringer Ingelheim Phase III - - - - - - -
MSB11022 Merck KGaA Phase III - - - - - - -
Enbrel Benepali Biogen/Samsung Marketed** 15 45 69 91 109 124 139
Erelzi Novartis Approved* - - - - - - -
CHS-0214/BAX 2200 Coherus BioSciences Phase III - - - - - - -
CT-P05 Pfizer/Celltrion - - - - - - -
Note: *US; ** Europe. Source: EvaluatePharma.

Once these first biosimilars reach the market, any followers may be delayed from entering for at least a year. Thus while losing a partner in Shire is a mild setback, both Coherus and Momenta have time to continue development solo and to secure new partners if necessary. And the knowledge that Shire was looking to streamline its pipeline after the Baxalta acquisition gave investors confidence that the decision was not based on safety or efficacy.

The good news about being a later entrant to the biosimilar scene is that most analysts do not believe that prices and revenue will drop as sharply as for small-molecule generics. There could well be plenty to play for with multiple biosimilar players.

Partnership dance

Given that groups like Pfizer, Novartis, Biogen and Amgen are active in biosimilars, the question remains which are candidates to license in the unencumbered Humira and Enbrel copies. As Amgen has got there first on Humira, while Biogen and Novartis have done the same on Enbrel, the list of possible partners shrinks substantially.

As the commercial owners of Enbrel, Amgen and Pfizer have little interest in supporting a biosimilar entrant, which reduces the list of Coherus partners. Humira, Novartis and Pfizer have late-stage copycats, while Biogen has submitted its SB5 for review in Europe.

These two candidates could provide an opportunity for a latecomer to pull itself into the biosimilar game. Boehringer Ingelheim or Merck & Co, for example, could top up their biosimilars pipeline with Coherus’s Enbrel lookalike, while Teva Pharmaceutical Industries – active in the smaller molecule biologicals like somatropin and epoetin – could get into the monoclonal antibody business by picking up one or both.

However, it looks more and more like bigger pharma players will dominate biosimilars in a way that they do not in generics. Both Momenta and Coherus need new partners – a solo launch does not look like an attractive option.

To contact the writer of this story email Jonathan Gardner in London at jonathang@epvantage.com or follow @ByJonGardner on Twitter

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