The risk and benefit of Pfizer Inc.’s oral sickle cell disease drug Oxbryta (voxelotor) has flipped, prompted by what the company called new clinical data indicating “an imbalance in vaso-occlusive crises and fatal events” that need more study. Based on an EMA recommendation, Pfizer said it is voluntarily recalling all lots of Oxbryta from wherever it’s approved worldwide. Pfizer also is shuttering its Oxbryta clinical studies and expanded access programs.
Pfizer Inc. plans to pay about $5.8 billion – total equity value – for Global Blood Therapeutics Inc. (GBT) and its oral sickle cell disease (SCD) treatment Oxbryta (voxelotor). The company reported the enterprise value as $5.4 billion, which includes debt and net cash. If completed, the GBT buy would be the second largest M&A in 2022 after Pfizer’s $6.7 billion buyout of Arena Pharmaceuticals Inc. Oxbryta, which netted about $195 million in sales in 2021, gained U.S. FDA approval in November 2019 for the treatment of SCD in adults and pediatric patients ages 12 and up. The FDA later expanded Oxbryta’s approved uses to SCD patients 4 years of age and older in December 2021.
At the European Hematology Association's annual meeting in Vienna last week, companies reported impressive progress for the treatment of sickle cell disease.
The CDC estimates that sickle cell disease affects well over 100,000 Americans, with the disease occurring most often in African Americans. September has been designated as National Sickle Cell Awareness month designed to focus attention on the ongoing research in this field and the need for new treatments.
Less than two weeks after giving the go-ahead to Novartis AG for Adakveo (crizanlizumab) to reduce the frequency of vaso-occlusive crises (VOCs) in adult and pediatric patients ages 16 and older with sickle cell disease (SCD), the FDA cleared – well ahead of its Feb. 26, 2020, PDUFA date – Oxbryta (voxelotor), from Global Blood Therapeutics Inc. (GBT), for SCD in adults and pediatric patients ages 12 and up.
