Kelly Davio

Fourteen parties have submitted comments on the guidance; in addition to other concerns with the document, including calls for clarification on the use of non-US comparator products and the potential for the waiver of bridging studies in the biosimilar development process, some drug makers called on the FDA to clarify issues associated with lot-to-lot variation and quality attributes.

Among the data that supported the biosimilar’s approval was a phase 3 study in patients with advanced nonsquamous non–small cell lung cancer. This week, researchers published detailed findings from that study.

Genentech had asked the court for a temporary restraining order and a preliminary injunction against Amgen in a Biologics Price Competition and Innovation Act (BPCIA) litigation related to patents covering Herceptin. The United States District Court for the District of Delaware denied Genentech’s motion, and the court has now made public a redacted version of the memorandum opinion in the matter.

The Senate Finance Committee has released its long-awaited chairman’s mark of the Prescription Drug Pricing Reduction Act of 2019. The bill, aimed at lowering the cost of drugs for American patients, contains a number of provisions that impact biosimilars.

The FDA has approved Pfizer’s rituximab biosimilar, Ruxience (rituximab-pvvr), referencing Rituxan. The biosimilar was approved to treat non-Hodgkin lymphoma, chronic lymphocytic leukemia, and granulomatosis with polyangiitis and microscopic polyangiitis.

"We argue that the default should be that biosimilars are interchangeable, unless there is compelling evidence otherwise," write Hans C. Ebers, PhD, of Biogen, and Hubb Schellekens, MD, PhD, of Utrecht University.

Sandoz announced today that it has enrolled its first patient in a combined phase 1 and phase 3 study of its proposed denosumab biosimilar versus EU-authorized Prolia.

When the Senate Committee on Health, Education, Labor, and Pensions released bipartisan legislation aimed at lowering the cost of healthcare in the United States in May, biosimilar stakeholders had some cause for optimism. However, one provision of the bill that has garnered significantly less attention from the broader healthcare community has raised concerns among many biologics stakeholders.

The first anticancer biosimilars have arrived on the US market. Amgen and Allergan have announced the launch of Mvasi, a bevacizumab biosimilar referencing Avastin, and Kanjinti, a trastuzumab biosimilar referencing Herceptin, in the United States.

Patients with inflammatory diseases in the United States continue to wait for the availability of a biosimilar etanercept, despite the 2016 approval of Erelzi and the 2019 approval of Eticovo. However, in the European context, biosimilar etanercept is already available, and recently presented data demonstrate that, in some countries, use of the biosimilar is high and making an impact on healthcare costs.

The retrospective, observational, multicenter study included 141 patients, 96 with ulcerative colitis and 45 with Crohn disease, at 14 centers in Italy.

According to the Congressional Budget Office (CBO), enacting the bill would increase direct spending by about $18.7 billion and increase direct revenues by $26.2 billion, resulting in a net decrease in the deficit of $7.6 billion by 2029.

Republic of Korea–based drug maker Celltrion announced this week that it is launching its first clinical trial of CT-P39, a proposed biosimilar omalizumab referencing Xolair. The company says that it plans to enter phase 3 trials in the first half of 2020 and has plans to commercialize the biosimilar by 2022.

Access to biologic drugs is uneven, even in nations with relatively robust healthcare resources. In lower-resource areas, such as Eastern Europe, access to biologic therapy for diseases like inflammatory bowel disease (IBD) may be very limited.

Singapore-based Prestige BioPharma announced this week that its HD204, a proposed biosimilar bevacizumab product referencing Avastin, met its primary end point in a phase 1 study evaluating the pharmacokinetics (PK), safety, and immunogenicity of the biosimilar in comparison to its reference.

The study, conducted at a hospital in Spain from 2015 to 2017, included all 100 patients who were switched to the biosimilar from the reference infliximab when the hospital transitioned to using the lower-cost product.

This week, a research letter appearing JAMA Internal Medicine reported on efforts to understand whether there exists an association between payments from drug makers and Medicare spending on adalimumab and certolizumab.

Spain-based drug maker mAbxience is developing a biosimilar rituximab, RTXM83. Last week, researchers reported findings from a head-to-head study of the proposed biosimilar versus its reference product as a first-line treatment for patients with diffuse large B-cell lymphoma (DLBCL).

Biosimilar developer Biocon is facing yet another setback after the FDA issued another Form 483 for its insulin facility.

The United States District Court for the District of Columbia has vacated the Trump administration’s rule requiring the disclosure of wholesale acquisition costs for drugs in direct-to-consumer television advertising. The rule had been slated to take effect today, July 9.

Biosimilar developer Samsung Bioepis has gained an updated label for its biosimilar adalimumab, Imraldi, referencing Humira. The biosimilar is now approved for storage in nonrefrigerated conditions for up to 28 days. This update means that the biosimilar can now be stored for an additional 2 weeks at room temperature.

Anti–vascular endothelial growth factor therapy is the standard of care for the first-line treatment of macular edema associated with central retinal vein occlusion or hemiretinal vein occlusion, and a number of therapeutic options are available, including aflibercept, ranibizumab, and off-label bevacizumab.

The subcutaneously administered trastuzumab contains the same monoclonal antibody as the intravenous formulation at a dose of 600 mg per 5-mL vial, plus a recombinant human hyaluronidase, to be used every 3 weeks. The hyaluronidase is used to increase the permeability of the extracellular matrix, allowing for administration of higher volumes and enhanced absorption of the drug.

As more centers begin to switch patients from reference infliximab to biosimilar options, patients who have benefitted from rapid infusions of the reference product may want to continue to receive time-saving infusions that reduce the burden of lengthy visits to infusion centers.

Given the head-to-head data from the SPIRIT trial, Humira maker AbbVie may face even further challenges in trying to maintain its sales as newer products like ixekizumab advance in such therapeutic areas as psoriatic arthritis (PsA).

In a study conducted from 2017 to 2018 among all of the infliximab-treated patients with inflammatory bowel disease (IBD) in a single center, patients who were in clinical remission were invited to complete a questionnaire to assess their biosimilar knowledge and acceptance of a switch.

Starting in 2017, the Henry Ford Cancer Institute started using follow-on filgrastim (tbo-filgrastim, a product approved prior to the establishment of the biosimilar approval pathway in the United States) and biosimilar filgrastim (Zarxio) in stem cell mobilization prior to transplant.

June 2019 was a busy month for oncology biosimilars, in both the supportive care and anticancer contexts, with regulatory activity and the presentation of reassuring new data.

The FDA has approved Pfizer’s bevacizumab biosimilar, bevacizumab-bvzr, referencing Avastin.

The Biosimilars Council, a part of the Association for Accessible Medicines, has issued a new white paper in which it condemns abuses of the patent system that delay biosimilar competition. It also argues that legislative proposals to regulate settlements would “merely benefit companies investing in the creation of patent thickets.”