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.
Nearly one year after CSL Ltd. announced its $11.7 billion acquisition of Vifor Pharma Ltd., the company outlined for the first time the synergies of the two companies and its long-term growth strategy aimed at the nephrology market.
As it moves into phase II testing with the lead candidate from its hematologic pipeline, privately held Disc Medicine Inc. is also moving to the public markets via a reverse merger agreement with struggling biotech Gemini Therapeutics Inc. Concurrent with a $53.5 million financing from investors, the deal is expected to provide Disc with a cash runway into 2025.
Opinion on Wall Street said the matter could have gone either way, but in the end Akebia Therapeutics Inc.’s vadadustat, a HIF prolyl-hydroxylase inhibitor for anemia caused by chronic kidney disease (CKD), garnered a complete response letter (CRL) instead of approval from the FDA. The news slammed Akebia shares (NASDAQ:AKBA), which closed at 82 cents, down $1.61, or 66%. Specifically, the agency said that the data in the NDA do not support a favorable benefit-risk assessment of vadadustat in dialysis-dependent (DD) and non-DDs patients.
The FDA’s approval of Agios Therapeutics Inc.’s Pyrukynd (mitapivat) for treating hemolytic anemia marks a turnaround from nearly a year ago. That’s when Agios sold its commercial, clinical and research-stage oncology portfolio to privately held Servier Pharmaceuticals LLC to concentrate on rare diseases.
Sierra Oncology Inc. plans an NDA in the second quarter of this year for momelotinib (MMB), thanks to data from the phase III Momentum study with the drug in myelofibrosis (MF) patients who are symptomatic and anemic after treatment with an approved JAK inhibitor. Momentum, which pitted momelotinib against the androgen danazol, met all of its primary and key secondary endpoints. MMB inhibits JAK1/2 and ACVR1/ALK2. Shares of San Mateo, Calif.-based Sierra (NASDAQ:SRRA) closed Jan. 25 at $22.68, up $7.17, or 46%.
Results from two pivotal phase III trials testing Glaxosmithkline plc's daprodustat against anemia due to chronic kidney disease (CKD) found the oral hypoxia-inducible factor prolyl hydroxylase inhibitor helped both non-dialysis and dialysis patients improve or maintain hemoglobin levels without increased cardiovascular risk vs. standard-of-care erythropoietin stimulating agents. Though already approved in Japan as Duvroq, what future the drug might face in the U.S., where the same-class drug roxadustat garnered an FDA complete response letter, remained an open question.
Disc Medicine Inc. closed a $90 million series B round to move its two lead assets into clinical trials in patients next year. Bitopertin, an oral inhibitor of glycine transporter 1 (GlyT1), is entering a phase II trial in patients with erythropoietic porphyrias (EPPs), a set of rare genetic disorders caused by mutations that disrupt heme synthesis. Disc-0974, an antibody directed against hemojuvelin, will enter a phase II trial in myelofibrosis patients with transfusion-dependent anemia. The molecule, which Disc Medicine in-licensed from North Chicago-based Abbvie Inc., is currently undergoing a phase I trial in healthy volunteers.
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.
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.
