Entering what Mirum Pharmaceuticals Inc. CEO Chris Peetz called “a new phase of growth and value creation,” the company plans to submit an NDA to the U.S. FDA in the second half of this year, based on phase IIb data from the Vistas trial with oral ileal bile acid transporter (IBAT) inhibitor volixibat in primary sclerosing cholangitis (PSC).
With the U.S. FDA’s approval of GSK plc’s ileal bile acid transporter (IBAT) inhibitor, Lynavoy (linerixibat), patients with primary biliary cholangitis no longer need off-label treatments for a debilitating internal itch symptom called cholestatic pruritus.
Mirum Pharmaceuticals Inc. is buying privately held Bluejay Therapeutics Inc., an $820 million purchase that will bring it Bluejay’s lead asset, brelovitug, for treating chronic hepatitis D virus.
Though it’s been used off-label for more than three decades to treat cerebrotendinous xanthomatosis, Mirum Pharmaceuticals Inc.’s chenodiol gained an official U.S. FDA nod Feb. 21 as the first drug approved specifically for treating the rare autosomal recessive lipid storage disease.
Label comparisons began promptly with the accelerated U.S. FDA clearance of Gilead Sciences Inc.’s oral peroxisome proliferator-activated receptor (PPAR)-delta drug, Livdelzi (seladelpar), for primary biliary cholangitis (PBC). The space includes Ipsen Pharma SA’s dual PPAR alpha/delta agonist, Iqirvo (elafibranor), licensed from Genfit SA and cleared in June 2024, as well as Ocaliva (obeticholic acid), the first-in-class farnesoid X receptor agonist from Intercept Pharmaceuticals Inc., greenlighted for PBC in May 2016.
Optimism on Wall Street proved wise and shares of Mirum Pharmaceuticals Inc. (NASDAQ:MIRM) rose accordingly to close June 17 at $33, up $7.08, or 27.3%, as the firm disclosed interim results from two phase IIb studies evaluating volixibat, an oral ileal bile acid transporter (IBAT) inhibitor, in patients with primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC). The drug proved its mettle in both liver biliary tract-stenosing indications, with no new safety signals turning up, Foster City, Calif.-based Mirum said.
Two sNDAs, one from Bristol Myers Squibb Co. (BMS) and the other from Mirum Pharmaceuticals Inc., have received U.S. FDA approval to further expand their treatment indications.
Dealmaking proved alive and well, with Sangamo Biosciences Inc. disclosing a tie-up worth as much as $1.19 billion with a subsidiary of Eli Lilly and Co., while Mirum Pharmaceuticals Inc. pledged to acquire for $445 million the bile-acid product portfolio owned by Travere Therapeutics Inc.
Mirum Pharmaceuticals Inc. plans to “move rapidly toward regulatory filings” to expand use of IBAT inhibitor Livmarli (maralixibat) into progressive familial intrahepatic cholestasis (PFIC), President and CEO Chris Peetz told investors during a conference call Oct. 24 to discuss the positive top-line results from the phase III March study, which not only hit its primary endpoint in patients with PFIC2 but showed statistical improvements in pruritis across a range of PFIC subtypes.
A vaccine for dengue fever, an advanced therapy for a complication after transplants, and a potential first-in-class drug for a form of psoriasis were among medicines recommended for approval by European regulators on Oct. 14.
