Core Insights - Mirum Pharmaceuticals' revenue is primarily driven by its lead product, Livmarli, which has shown consistent sales growth since its launch [1][3][11] Product Overview - Livmarli is an orally administered IBAT inhibitor approved for treating cholestatic pruritus in patients with Alagille syndrome and certain patients with PFIC in the U.S. and Europe [2] - A new tablet formulation of Livmarli has been approved, enhancing convenience for older patients [3] Financial Performance - In the first nine months of 2025, Livmarli's net product sales reached $253.6 million, reflecting a 70% year-over-year increase [3] - Mirum anticipates total revenues for 2025 to be between $500 million and $510 million, up from a previous estimate of $490 million to $510 million, driven by Livmarli and bile acid products [6] Product Portfolio Expansion - Mirum has made progress with other marketed products, Cholbam and Ctexli, which were added to its portfolio following the acquisition of Travere Therapeutics' bile acid products in 2023 [5][6] Pipeline Developments - Mirum's lead pipeline candidate, volixibat, is currently under evaluation in two phase IIb studies for primary biliary cholangitis and primary sclerosing cholangitis [7] Competitive Landscape - Mirum faces competition from Albireo AB's Bylvay, which directly competes with Livmarli in the PFIC and ALGS markets [9] - GSK is developing linerixibat, another IBAT inhibitor, which could pose significant competition for Mirum's pipeline candidate volixibat [10][12] Stock Performance and Valuation - Over the past six months, Mirum's shares have increased by 35.9%, outperforming the industry and the S&P 500 [13] - The company's shares are trading at a premium, with a price/book ratio of 11.87 compared to the industry average of 3.55 [14] Earnings Estimates - The Zacks Consensus Estimate for Mirum's 2025 loss per share has narrowed from 67 cents to 41 cents, while estimates for 2026 have shifted from earnings of 4 cents per share to a loss of 29 cents [15]

Core Insights - Mirum Pharmaceuticals' lead product, Livmarli, is the primary revenue driver for the company, significantly contributing to its top-line growth [1][3][13] Product Overview - Livmarli is an orally administered ileal bile acid transporter (IBAT) inhibitor approved for treating cholestatic pruritus in patients with Alagille syndrome (ALGS) and certain patients with progressive familial intrahepatic cholestasis (PFIC) [2] - A new tablet formulation of Livmarli was approved by the FDA earlier this year, enhancing convenience for older patients [3] Financial Performance - In the first half of 2025, Livmarli's net product sales reached $161.4 million, reflecting a 79.1% year-over-year increase [3] - Mirum has raised its revenue guidance for 2025 to a range of $490-$510 million, up from the previous estimate of $435-$450 million, due to strong sales performance [6][13] Market Dynamics - Mirum's acquisition of Travere Therapeutics' bile acid products in 2023 has diversified its revenue stream, adding Cholbam capsules and Ctexli tablets to its portfolio [5] - Competition is intensifying in the market, particularly from Albireo AB's Bylvay, which directly competes with Livmarli [8] Pipeline Developments - Mirum's lead pipeline candidate, volixibat, is currently undergoing evaluation in two phase IIb studies for primary biliary cholangitis and primary sclerosing cholangitis [9] Valuation and Stock Performance - Year-to-date, Mirum's shares have increased by 74.6%, outperforming the industry average of 7.4% [14] - The company's shares are trading at a premium, with a price/book ratio of 14.21 compared to the industry average of 3.35 [15] - The Zacks Consensus Estimate for 2025 loss per share has improved from 84 cents to 69 cents, with 2026 estimates shifting from a loss of 13 cents to earnings of 3 cents [16]