1. Pink Sheet
  2. >>Geography
  3. >>North America
  4. >>United States

Biosimilar But Different: Zarxio, Neupogen Diverge On Syringes, Vials

 
• By Sue Sutter

Differences in product presentation may not have much market impact now but could prove a regulatory challenge if Sandoz pursues an interchangeability determination down the line.

Differences in product presentation and patient labeling between Sandoz Inc.’s Zarxio (filgrastim-sndz) and its reference product, Amgen Inc.’s Neupogen (filgrastim), are not expected to impede the biosimilar’s acceptance by health care professionals and patients, but they could create a regulatory hurdle to an eventual determination of interchangeability.

FDA approved Zarxio, the first biosimilar licensed under the 351(k) pathway, on March 6 with all five of the indications that appear on the

Read the full article – start your free trial today!

Join thousands of industry professionals who rely on Pink Sheet for daily insights

  • Start your 7-day free trial
  • Explore trusted news, analysis, and insights
  • Access comprehensive global coverage
  • Enjoy instant access – no credit card required
Start Free Trial

Already a subscriber?

More from United States

Pharma Industry Argues Tax, Other Incentives Better Than Tariffs

 
• By Jessica Merrill

Pharmaceutical industry organizations offered alternatives to tariffs that could maintain a secure domestic supply chain in public comments filed in response to a federal 232 investigation.

US FDA Guidance Roadblock: Writing Continues, But Publication Has Slowed Or Stopped

 
• By Derrick Gingery

Cuts to the FDA’s policy and legal personnel have prevented dozens of product-specific guidances for generic drug development from being published.

FDA Adcomms Are Back: Four Cancer Drugs, COVID-19 Vaccine Formulations To Get Reviews

 
• By Sue Sutter and Bridget Silverman

The Oncologic Drugs Advisory Committee will meet for two days in mid-May, followed by a Vaccines and Related Biological Products Advisory Committee’s review of the 2025-2026 COVID-19 vaccine formulation.

Tougher Approval Standards May Follow Vinay Prasad’s Appointment To Lead US FDA’s CBER

 
• By Sarah Karlin-Smith

Industry is concerned that Prasad may make regulatory flexibility tougher to obtain for cell and gene therapy, while vaccine and public health advocates are angry about Prasad’s criticisms of US COVID-19 policies.

More from North America

US FDA Expands Surprise Foreign Inspections But Loses Associate Commissioner Michael Rogers

 
• By Sue Sutter

Commissioner Martin Makary’s repeated characterization of foreign facilities as being subject to lower standards than domestic counterparts may have contributed to Rogers’ decision to retire as head of the recently formed Office of Inspections and Investigations.

Sponsors Like START Rare Disease Pilot, Will Prasad Maintain Its Momentum?

 
• By Kate Rawson

Sponsors reported faster development times for products that joined the pilot program intended to speed rare disease treatments in CBER.

Trump Administration Push For Dismissal, Transfer Of Mifepristone Case Leaves Overhang For Pharma

 
• By Sarah Karlin-Smith

The Trump Administration requested a dismissal or transfer of a lawsuit seeking to tighten the safety requirements for the abortion pill mifepristone on procedural grounds, which still leaves the administration's position on the case's merits unclear.