Key Takeaways Mirum's revenues hinge on Livmarli, which generated $253.6M in the first nine months of 2025.MIRM expects continued Livmarli growth as increasing global adoption supports demand.Cholbam and Ctexli sales also rose, adding to Mirum's expanding rare-disease drug portfolio.Mirum Pharmaceuticals’ (MIRM) revenue base is largely supported by its lead product, Livmarli (maralixibat), which has been witnessing steady sales uptake since its launch. The drug remains a key top-line driver for the company. ...

Core Insights - Mirum Pharmaceuticals has initiated the phase II BLOOM study for MRM-3379, a PDE4D inhibitor aimed at treating Fragile X syndrome (FXS), with the first patient enrolled [1][6] - The study will focus on safety, tolerability, and potential clinical benefits, with top-line data expected in 2027 [2][6] - FXS affects approximately 50,000 males in the U.S. and Europe, and currently, there are no approved therapies for this condition [2] Company Developments - MRM-3379 has shown promise in improving cognitive and behavioral symptoms associated with FXS in preclinical studies, indicating a potential novel treatment approach [3] - Mirum's lead product, Livmarli, is approved for treating cholestatic pruritus in patients with Alagille syndrome and progressive familial intrahepatic cholestasis, generating significant revenue [7][8] - Livmarli's net product sales reached $253.6 million in the first nine months of 2025, reflecting a 70% year-over-year increase [8] Pipeline Progress - Mirum is advancing other products, including Cholbam capsules and Ctexli tablets, which are also approved for rare diseases, contributing to revenue growth [9] - The lead pipeline candidate, volixibat, is undergoing evaluation in two phase IIb studies for primary biliary cholangitis and primary sclerosing cholangitis, with top-line data expected in 2026 [9][10] Market Performance - Year-to-date, Mirum's shares have increased by 69.3%, outperforming the industry average rise of 20.3% [4]

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]

Core Insights - CorMedix (CRMD) and Mirum Pharmaceuticals (MIRM) are focusing on treatments for underserved medical conditions, creating niches in areas often overlooked by larger pharmaceutical companies [1] CorMedix (CRMD) - CorMedix's lead product, DefenCath, is the first FDA-approved antimicrobial catheter lock solution in the U.S., aimed at reducing catheter-related bloodstream infections in adult patients undergoing chronic hemodialysis [2] - DefenCath generated $78.8 million in net revenues in the first half of 2025, prompting CorMedix to raise its full-year revenue guidance for 2025 [6] - The company plans to expand DefenCath's label into total parenteral nutrition to increase its customer base [7] - CorMedix acquired Melinta Therapeutics for $300 million, adding seven marketed therapies and diversifying its revenue streams [8] - The acquisition of Melinta is a strategic move to mitigate competition in the CRBSI market from established players like Pfizer and Amphastar [10] - The Zacks Consensus Estimate for CorMedix's 2025 sales and EPS indicates a year-over-year increase of approximately 411% and 607%, respectively [19] Mirum Pharmaceuticals (MIRM) - Mirum's lead product, Livmarli, is approved for treating cholestatic pruritus in patients with Alagille syndrome and has generated $161.4 million in net product sales in the first half of 2025, reflecting a 79.1% year-over-year increase [3][14] - Livmarli's sales momentum is expected to continue, supported by a new tablet formulation launched in June 2025 [13] - MIRM's revenue is heavily reliant on Livmarli, making it vulnerable to regulatory setbacks and competitive pressures, particularly from Albireo's Bylvay [18][29] - Mirum's strategic acquisition of Travere Therapeutics' bile acid products has diversified its revenue stream, generating $78 million in the first half of 2025 [17] - The Zacks Consensus Estimate for Mirum's 2025 sales implies a year-over-year increase of around 51%, with a projected 61% narrowing of loss per share [19] Comparative Analysis - Year-to-date, CRMD shares have gained 39.1%, while MIRM shares have increased by 78.7%, compared to a 3.5% return for the industry [24] - MIRM's shares trade at a higher price/book (P/B) ratio of 14.35 compared to CRMD's 3.47, indicating a more expensive valuation [25] - CorMedix is viewed as a stronger investment option due to its expanding product portfolio and growth trajectory, while Mirum's reliance on Livmarli poses risks [27][31]