Fibrogen Inc. and its co-development partners for roxadustat, Astrazeneca plc and Astellas Pharma Inc., were dealt a major blow May 5 as the oral hypoxia-inducible factor prolyl hydroxylase inhibitor failed to meet its primary efficacy endpoint in a phase III trial in patients with anemia caused by transfusion-dependent lower-risk myelodysplastic syndromes (MDS).
Fibrogen Inc. has synthesized inhibitors of lysine-specific demethylase 5 (KDM5), particularly KDM5B (JARID1B), reported to be useful for the treatment of cancer, anxiety disorder, schizophrenia, viral infection, bipolar disorder, autism, Alzheimer's and Huntington's diseases, among others.
Hoping its drug, daprodustat, can succeed in the U.S. where two other hypoxia-inducible factor prolyl hydroxylase inhibitors (HIF-PHIs) have failed so far, GSK plc will present its case Oct. 26 to the FDA’s Cardiovascular and Renal Drugs Advisory Committee for the drug's potential use as a treatment for anemia in patients with chronic kidney disease regardless of dialysis dependency.
Continuing an upward trajectory, BioWorld’s Drug Developers Index (BDDI) has climbed more than 10% since the start of this year, following sharp drops at the end of March and May. Shares began to rebound in June and the index has shown a steady incline, similar with the Nasdaq Biotechnology Index, which is currently up 12%.
Less than two weeks after Fibrogen Inc. received an FDA complete response letter for its hypoxia-inducible factor prolyl hydroxylase (HIF-PH) inhibitor, Evrenzo (roxadustat), Astellas Pharma Inc. and Fibrogen have won European Commission approval for the drug to treat symptomatic anemia associated with chronic kidney disease (CKD) in adults. The approval, which followed a positive CHMP opinion in June, triggered a $120 million milestone payment from Astellas to Fibrogen. In addition, Fibrogen will receive royalties on EU sales of the drug.
Fibrogen Inc. was braced for receiving a complete response letter (CRL) and it got one. The FDA suggested it would not approve roxadustat’s NDA for treating anemia of chronic kidney disease until more clinical work is conducted. In July, the FDA’s Cardiovascular and Renal Drugs Advisory Committee said basically the same thing as it voted 13-1 against approval for the nondialysis population and 12-2 against approval for patients on dialysis unless more trial data are submitted.
Stock market exuberance, particularly in favor of an innovative industry working to pull the world out of the deadly COVID-19 pandemic, led to drug developers shares surging 30% in 2020. But if one thing is certain, it is this: Markets usually pull back and that is partially why BioWorld’s Drug Developers Index is showing only a 2.06% gain so far this year, in contrast to both the Nasdaq Biotechnology Index and the Dow Jones Industrial Average, which are up 6.28% and 10.96%, respectively.
In a deal worth up to $108 million, ophthalmic startup Eluminex Biosciences Ltd. has licensed the global rights to Fibrogen Inc.’s biosynthetic cornea derived from recombinant human collagen (RHC) type III intended to tackle corneal blindness.
Despite assembling the largest body of data the FDA said it may ever see for a drug intended to treat anemia due to chronic kidney disease, Fibrogen Inc. will have to get even more trial data to push roxadustat over the finish line in the U.S. – if the FDA follows the advice of its Cardiovascular and Renal Drugs Advisory Committee.
Safety will be the focus July 15 when the FDA’s Cardiovascular and Renal Drugs Advisory Committee dives into the data for Fibrogen Inc.’s roxadustat as a treatment for anemia due to chronic kidney disease.
