In the history of regenerative medicine, 2017 was a critical year. With approvals for Kymriah (tisagenlecleucel) from Novartis AG, Yescarta (axicabtagene ciloleucel) from Kite Pharma (a Gilead company), and Luxturna (voretigene neparvovec-rzyl) from Spark Therapeutics, cell and gene therapies finally made their mark on the regulatory landscape. Then in 2018, those products began both treating patients and bringing in revenues for their sponsor companies.
‚ÄúPatients are being treated, and biotechnology and pharmaceutical companies are being paid for treating them,‚ÄĚ said Anthony Davies (founder of cell and gene therapy specialist firm Dark Horse Consulting) to delegates at the Phacilitate Leaders World and World Stem Cell Summit 2019 in Miami, FL, this past January. ‚ÄúThis is the cycle of life in drug development. We all know cell and gene therapies were approved before, but we also know that these three approvals were a singular milestone in the development of the field.‚ÄĚ
Despite those approvals beckoning the way to a new frontier in medicine, the future will not be so rosy unless industry and government can balance the huge costs of these new curative therapies, he warned. ‚ÄúThe field of medicine is, for the first time in history, at a position where we can make more effective medications than we can afford,‚ÄĚ Davies told a packed plenary session. After launching its Kymriah chimeric antigen receptor (CAR) T-cell therapy, Novartis received criticism for its US$475,000 price tag. The Yescarta CAR-T therapy has a slightly lower list price of $373,000, and Luxturna gene therapy has a list price of $425,000 per eye. ‚ÄúThis is not a first-world thing necessarily,‚ÄĚ he said, ‚Äúbut just consider the second and third world.‚ÄĚ What‚Äôs different now, he explained, is that the medicines companies can make are both effective and becoming so abundant that based on the global gross domestic product (GDP), the world simply can‚Äôt afford them at these prices.
And Davies pointed out that the problem is not one of ‚Äúgreed and pharmaceutical margins,‚ÄĚ but rather the high cost of goods sold (CoGS) and manufacturing costs. ‚ÄúThe CoGS picture is not good. This is a significant driver of pricing, and we don‚Äôt believe that unreasonable margins are being applied by companies to their approved products. But we do feel that for those prices to come down, something serious has to be done about CoGS.‚ÄĚ He added that the field ‚Äúis in danger of sleepwalking into a CoGS crisis,‚ÄĚ which poses the biggest real threat to the forward motion of regenerative medicine as a therapeutic class.
The next cell and gene therapies moving toward commercialization are unlikely to be less expensive. Previously known as AVXS-10, Zolgensma (onasemnogene abeparvovec) gene therapy is in development for the treatment of spinal muscular atrophy (SMA) by Novartis subsidiary AveXis, for example. Speaking with Davies in a fireside chat, AveXis president Dave Lennon reconfirmed comments he made in November 2018 that this product could be priced in the range of $4‚Äď5 million per patient if it reaches the market. Although that pricing strategy has yet to be set in stone, he argued that such a price tag still would be cost effective.
‚ÄúWe have therapies now that do something completely different,‚ÄĚ he said, ‚Äúand I think we need to recognize and properly value those.‚ÄĚ His company has carried out a cost analysis for the product, which has been independently validated, and the results indicate that it will be worth that much money. ‚ÄúThe reality is that healthcare systems spend this type of money on caring for diseases all the time,‚ÄĚ Lennon said, pointing to the high and long-term costs of treating and caring for patients with cancer and chronic diseases. This is what‚Äôs already being spent in the system, he said. ‚ÄúWe just happen to put it into one box, which creates a lot of transparency around how much it costs to care for these kind of cases.‚ÄĚ
But since the Phacilitate conference, the US nonprofit Institute for Clinical and Economic Review (ICER) has claimed that the gene therapy would be cost effective at a price range of $310,000‚Äď$900,000, which is far lower than the range suggested by AveXis.
Big Pharma and CAR-T
Following successes for Novartis and Gilead, other companies are looking more seriously at T cell therapies, say venture capitalists. Big Pharma is looking at strategies to enter the CAR-T cell sector ‚ÄĒ if they‚Äôre not already in it ‚ÄĒ spurred on by 2017 approvals for Novartis and Kite Pharma.
Anna French, an associate at healthcare venture capitalist firm Qiming Ventures Partners, said that companies ‚Äúhave been scrambling to build up their T-cell capabilities. In some cases, there is a real commitment to that, and in other cases it‚Äôs a bit more exploratory.‚ÄĚ
Reni Benjamin, MD, is senior biotechnology analyst at Raymond James Financial. He told delegates that ‚Äúall major pharma companies now are in cell therapies,‚ÄĚ although their interests and investments differ greatly.
Alberto Santagustino is head of cell and gene technologies at contract development and manufacturing organization (CDMO) Lonza. He said that 80% of innovation comes from small biotechnology companies. Historically, those are snapped up by Big Pharma corporations wanting to supplement or replace their own pipelines. That has happened in the CAR-T space for Juno, Kite, and AveXais, but other companies (e.g., bluebird, Servier, and Sangamo) remain independent but involved in Big Pharma partnerships.
Deep Into CAR-T: Adding up regulatory successes with investments and pipelines, Novartis comes out on top in the CAR-T cell therapy space (Figures 1 and 2). The company teamed up with the University of Pennsylvania in 2011, invested in a manufacturing site the year after, and became the pioneers in CAR-T through the Kymriah approval. Perhaps buoyed by that success, Novartis has laid out plans to widen its production network and boosted its pipeline through mergers and acquisitions. It acquired AveXis for US$8.7 billion in May 2018, adding gene-therapy to its capabilities.
Gilead Sciences broke into this sector through its acquisition of Yescarta developer Kite Pharma for US$11.9 billion in August 2017, weeks before the product achieved US FDA approval. Since then, Gilead has invested in a global Yescarta network and entered a collaboration (worth up to $3 billion) with Sangamo Therapeutics to develop allogeneic therapies in oncology.
Megamergers and Mixed Interest: Through a proposed $74 billion merger with Celgene, Bristol-Myers Squibb (BMS) is showing interest. If the deal goes through, it will propel BMS into the CAR-T cell therapy space. Celgene already has a partnership in place with bluebird bio, and in March 2018 it completed a $9¬†billion acquisition of Juno Therapeutics, adding CAR-T technology and manufacturing capabilities along with a pipeline of hematology and oncology therapies.
Takeda undoubtedly staked a claim to compete among the biggest corporations through its $62 billion takeover of Shire. Although that merger added a gene therapy candidate for hemophilia, Shire‚Äôs pipeline was devoid of CAR-T cell therapies, which it had sold as part of its oncology portfolio to Servier in August 2018. But since then, Takeda has signed separate codevelopment deals with Memorial Sloan Kettering Cancer Center (MSK) and Noile-Immune Biotech. Furthermore, the corporation‚Äôs acquisition of TiGenix following European approval of Alofisel (darvadstrocel) allogeneic cell therapy shows that it intends to be a serious player in regenerative medicine.
Pfizer has been involved in CAR-T cell therapies for several years through partnerships with Cellectis and Servier. But in April 2018, it sold the rights to several such assets to the newly formed Allogene Therapeutics. Pfizer took a 25% stake in Allogene (see box, next page), but this might indicate that it wants to lower its risk in developing allogeneic CAR-T products.
J&J, meanwhile, finally took the plunge into CAR-T cells in December 2017, through a $350 million worldwide collaboration and license agreement with Legend Biotech.
Waiting in the Wings: Other Big Pharma companies have been less dynamic in the cell therapy space.
GlaxoSmithKline (GSK) partnered with Adaptimmune in 2014 and in 2018 took an option to develop that company‚Äôs engineered T-cell therapy NY-ESO program targeting various cancers. Meanwhile, GSK transferred its rare-disease gene-therapy programs to Orchard Therapeutics, taking a 19.9% stake in that company through a deal similar to that of Pfizer and Allogene.
AstraZeneca partnered with Juno in 2015 to conduct combination clinical trials in immunooncology with a CAR-T cell therapy candidate, but according to clinicaltrials.gov, that study is a long way from completion.
Meanwhile Genentech/Roche has been quieter about CAR-T cell opportunities, although it has invested in next-generation bispecific antibodies for engaging T cells. And Eli Lilly has so far resisted the temptation of cell therapies overall. Speaking about CAR-T cells in particular early in 2019, chief executive officer Dave Ricks told Reuters, ‚ÄúThe data are amazing, but practically it‚Äôs not reaching many people.‚ÄĚ
|An Allogeneic CAR-T Facility Planned in California|
|In January, Allogene Therapeutics revealed to BioProcess Insider its intentions to establish a manufacturing facility in the San Francisco Bay area. The company has entered a lease agreement at a site in Newark, CA, to build a 118,000-ft2 cell therapy manufacturing facility for an allogeneic approach to chimeric antigen receptor (CAR) T-cell therapy.|
|‚ÄúThis manufacturing facility and continued build-out of our in-house process development and characterization capability will allow us to advance manufacturing and secure the supply of our AlloCAR T-cell therapies,‚ÄĚ said Alison Moore (chief technology officer).|
|Founded last year by former Kite Pharma executives, the company‚Äôs allogeneic manufacturing method uses T cells harvested from healthy donors, then engineers those cells to express CARs designed to recognize certain cell-surface proteins expressed on hematologic or solid tumors. Genes within those T cells are edited to reduce the risk of graft-versus-host disease and allogeneic rejection.|
|Cosponsored by Servier (France), lead product candidate UCART19 is one of a number of partnered CAR-T cell programs that Allogene took over from Pfizer in April 2018. Pfizer traded its rights to 17 different CAR-T cell therapy candidates for a 25% percent stake in Allogene.|
(BioProcess Insider, 22 February 2019)
Closed Systems, Standardized Platforms
But there is hope. These are early days in regenerative medicine, still, and Phacilitate delegates believe that the cost of manufacturing will decrease. Lennon said that although the cost of innovation remains high, both his company and the industry overall ‚Äúwill get better at this, and it will get cheaper.‚ÄĚ He said that his company is structured around finding the best solutions ‚Äúwherever they are, and I think we will continue that approach. There are so many steps to optimize here. We‚Äôre going to continue to look at partners and [technological] advances. We‚Äôll explore doing that ourselves, of course, but at the same time we‚Äôre happy to be partnering.‚ÄĚ
During a panel discussion, Nicolas Danzenb√§cher (senior product manager at Miltenyi Biotech) suggested that the high price of some production methods could be reduced through ‚Äúoptimization and clever planning.‚ÄĚ He said that the key areas for biomanufacturers to focus on are closed and automated systems. ‚ÄúThere are no completely closed systems as yet,‚ÄĚ but from a vendor‚Äôs perspective, ‚Äúthe closer you get with the process being as closed as possible, the lower your CoGS will be.‚ÄĚ
David Kneen (vice president of cell therapy at Invetech) agreed, adding that closed systems have a ‚Äúmassive impact on robustness and therefore on CoGS, but this is mostly driven by the ability to get high capacity utilization out of whatever equipment you are using.‚ÄĚ
And Chris Mason (chief scientific officer of early phase gene-therapy company AvroBio) confirmed that ‚Äúclosed and automated are the future.‚ÄĚ As a founding member of the Alliance for Regenerative Medicine (ARM), he warned that the lack of standardized platforms is holding back this segment of the biopharmaceutical industry. ‚ÄúWe‚Äôre going to get to the point at which manufacturing in a closed system will have to standardize, or it‚Äôs just not going to allow the industry to grow and realize its full potential.‚ÄĚ
Before standardization can take place, however, more technology needs to be made available. ‚ÄúAt the moment, we don‚Äôt have enough closed systems,‚ÄĚ Mason concluded. ‚ÄúI‚Äôm struggling to name more than about four or five. [The sector] is so small that we are going to have to see a bit of an explosion in technology in the closed-system space to come up with the next generation.‚ÄĚ
Although much work remains to bring closed and automated systems on board and thus lower biomanufacturing costs in regenerative medicine, the panel and its audience took some solace in looking back: During the early days of monoclonal antibody (MAb) production, a gram of that drug substance cost over $30,000 to make. Today that cost is just a few dollars.
Lopes AG, Sinclair A, Frohlich B. Cost Analysis of Cell Therapy Manufacture: Autologous Cell Therapies, Part 1. BioProcess Int. 27 March 2018; https://bioprocessintl.com/manufacturing/cell-therapies/analysis-cost-of-cell-therapy-manufacturing-autologous-cell-therapies-part-1.
Lopes AG, Sinclair A, Frohlich B. Cost Analysis of Cell Therapy Manufacture: Autologous Cell Therapies, Part 2. BioProcess Int. 20 April 2018; https://bioprocessintl.com/manufacturing/cell-therapies/cost-analysis-of-cell-therapy-manufacturing-autologous-cell-therapies-part-2.
Bauer N. Manufacturing Automation for Patient-Scale Cell Therapies (webinar). BioProcess Int. 24 August 2018; https://bioprocessintl.com/sponsored-content/manufacturing-automation-for-patient-scale-cell-therapies.
Based in Montpellior, France, Dan Stanton is editor of BioProcess Insider. Contact him at firstname.lastname@example.org, or follow him on Twitter: @Dan5tanton.