Less than a year ago, Pfizer Inc. was securing reimbursement in the UK for its sickle cell disease (SCD) drug, Oxbryta (voxelitor), while hematologists were debating how the increasing number of options for the condition, including Oxbryta, would fit into the treatment paradigm. Now, the URL for the drug’s website redirects to Pfizer’s announcement that it is pulling the drug from the market, while European regulators are recommending suspension of its marketing authorization there.
Pfizer Withdraws Oxbryta, But Overall Market Impact May Be Limited
The withdrawal amid concerns about the risk-benefit ratio reduces treatment options for sickle cell disease, but it is not expected to have much effect on the SCD market, including the gene therapies.

More from Drug Safety
The weight management drug, Mysimba, continues to demonstrate a positive benefit-risk balance but the data available are not sufficient to fully determine the cardiovascular safety beyond 12 months. Meanwhile, Currax this month announced the publication of a peer-reviewed study of Mysimba that followed patients for over 4.7 years and found no evidence of excess cardiovascular risk.
Filing in the Whole Women’s Health mifepristone case defends the FDA’s 2023 decision on the abortion pill safety program, but experts warn it does not necessarily signal the Trump Administration position in other mifepristone cases attempting to restrict medication abortion access.
The Pink Sheet drug review profile investigates the long and rigorous process behind the FDA’s recent relaxation of the cardiovascular safety warning for testosterone products.
The Pink Sheet Drug Review Profile breaks down the FDA's long reckoning with testosterone cardiovascular safety concerns
More from Pink Sheet
In his resignation letter, the CBER director said he was willing to work with HHS Secretary Robert F. Kennedy Jr. to address concerns about vaccine safety, but "it has become clear that truth and transparency are not desired by the secretary."
Sanofi’s Dupixent, Amgen’s Uplizna, and Bristol’s Opdivo seek new indications, while J&J hopes to start a franchise with nipocalimab and Stealth’s day of reckoning approaches.
A former CMS manager worries casework and other necessary functions could suffer as a result of the 300 staff cuts at the agency that are part of a massive HHS restructuring.