Financial Performance - For the year ended December 31, 2024, total revenues increased to 560.2million,comparedto434.2 million for the same period in 2023, representing a growth of approximately 29% driven by higher demand for approved products [378]. - Net losses for the years ended December 31, 2024 and 2023 were 569.2millionand606.6 million, respectively, indicating a reduction in losses of about 6.2% year-over-year [377]. - Total revenues for the year ended December 31, 2024, were 560.2million,up29434.2 million in 2023, driven by a 105.0millionincreaseinproductsales[410].−ProductsalesforCrysvitaincreasedby78134.7 million in 2024, while Dojolvi sales rose by 25% to 88.2million[410].−Selling,generalandadministrativeexpensesincreasedby11.8 million, or 4%, to 321.6millionfortheyearendedDecember31,2024,comparedto309.8 million in 2023 [420]. - Interest income rose by 9.8million,or3736.5 million for the year ended December 31, 2024, primarily due to higher marketable debt securities balances [422]. - The company recognized an income tax provision of 1.6millionfortheyearendedDecember31,2024,comparedtoanincometaxbenefitof4.8 million in 2023, reflecting a change of 188% [426]. Cash and Investments - As of December 31, 2024, the company had 745.0millioninavailablecash,cashequivalents,andmarketabledebtsecurities[378].−CashusedinoperatingactivitiesfortheyearendedDecember31,2024,was414.2 million, reflecting a net loss of 569.2million[434].−CashprovidedbyfinancingactivitiesfortheyearendedDecember31,2024,was399.2 million, primarily from a public offering that generated 381.0millioninnetproceeds[439].−Theinvestmentportfolioisprimarilycomposedoflow−risk,investment−gradedebtinstruments,includingU.S.governmenttreasuryandagencysecurities[449].−Ahypothetical100basispointchangeininterestrateswouldnothavehadamaterialimpactonthefairmarketvalueofcashequivalentsandmarketabledebtsecuritiesasofDecember31,2024[449].−ThecompanyhasnotexperiencedalossofprincipalonanyinvestmentstodateanddidnotrecordanyallowanceforcreditlossasofDecember31,2024[449].ResearchandDevelopment−Thecompanyhasincurredsubstantialcostsrelatedtoresearchanddevelopment,whichareasignificantcomponentofitsnetlosses[377].−Researchanddevelopmentexpensesroseby8697.9 million in 2024, with significant increases in gene therapy programs and biologic and nucleic acid programs [418]. - The company expects annual research and development expenses to moderate as product candidates advance through clinical development [419]. - Upfront license, acquisition, and milestone fees increased by 238% to 30.5millionin2024,primarilyduetoaclinicalenrollmentmilestoneachievementfortheGTX−102program[418].ProductPortfolio−Thecompanyhasfourcommerciallyapprovedproducts,includingCrysvitaR◯andEvkeezaR◯,targetingseriousraregeneticdiseases[375].−Thecompanyhasadiversepipelineofproductcandidates,includingbiologicsandgenetherapies,aimedattreatingseriousgeneticdiseases[375].−ThecompanytransitionedcommercialresponsibilitiesforCrysvitaintheProfit−ShareTerritorytoKKCinApril2023,impactingrevenuerecognition[411].RoyaltyAgreements−InDecember2019,thecompanyenteredintoaRoyaltyPurchaseAgreementwithRPIfor320.0 million for future royalty payments on Crysvita, with a capped amount of 608.0million[397].−InJuly2022,thecompanyenteredintoaRoyaltyPurchaseAgreementwithOMERSfor500.0 million for 30% of future royalty payments from Crysvita, with a cap of 725.0million[398].−TheeffectiveannualinterestratesfortheroyaltyagreementswithRPIandOMERSwere6.2158.1 million, an increase from 135.2millionin2023,reflectingagrowthof17.576.7 million in 2024, primarily due to increased demand for approved products, especially Crysvita and Evkeeza [413]. - The change in fair value of equity investments recorded a net decrease of 1.1millionfortheyearendedDecember31,2024,comparedtoanetincreaseof0.4 million in 2023, reflecting a change of 381% [423]. - Non-cash interest expense on liabilities for sales of future royalties decreased by 3.0million,or466.0 million for the year ended December 31, 2024 [424]. - Other expenses increased by 3.6millionfortheyearendedDecember31,2024,primarilyduetofluctuationsinforeignexchangerates[425].FutureOutlook−Thecompanyanticipatescontinuedannuallossesintheneartermasitdevelopsandseeksregulatoryapprovalsforproductcandidates[441].−TotalgrossdeferredtaxassetsasofDecember31,2024,were1,213.7 million, fully offset by a valuation allowance due to uncertainties in generating future taxable income [409]. Foreign Exchange Risk - The company faces foreign exchange risk due to transactions in currencies other than U.S. dollars, with a majority of revenue, expenses, and capital expenditures denominated in U.S. dollars for the year ended December 31, 2024 [451]. - A hypothetical 10% change in foreign exchange rates would not have had a material impact on the company's Consolidated Financial Statements [451].