Biggest changeThe following table provides information regarding other income (expenses) ( in thousands ): Year Ended December 31, Year Ended December 31, 2023 2022 Change 2022 2021 Change Interest income $ 21,768 $ 6,276 $ 15,492 $ 6,276 $ 1,993 $ 4,283 Interest expense (11,334) (11,014) (320) (11,014) (19,682) 8,668 Other income, net 1,594 974 620 974 231 743 Loss on extinguishment of debt — (7,578) 7,578 (7,578) — (7,578) Total other income (expense), net $ 12,028 $ (11,342) $ 23,370 $ (11,342) $ (17,458) $ 6,116 The $23.4 million change in our total other income (expense), net for the year ended December 31, 2023 compared to the year ended December 31, 2022, is primarily attributable to a $15.5 million increase in interest income in 2023, which was due to increases in short-term interest rates and higher average balances on our interest-bearing security investments, and the $7.6 million loss on extinguishment of debt that was recognized in 2022 in connection with the partial repurchase of the Convertible Senior Notes due 2025.
Biggest changeThe following table provides information regarding other income (expenses) ( in thousands ): Year Ended December 31, 2024 2023 Change Interest income $ 17,817 $ 21,768 $ (3,951) Interest expense (11,182) (11,334) 152 Other (expense) income, net (3,318) 1,594 (4,912) Total other income (expense), net $ 3,317 $ 12,028 $ (8,711) 75 Table of Contents The $8.7 million change in our total other income (expense), net for the year ended December 31, 2024 compared to the year ended December 31, 2023, is primarily attributable to a $4.0 million decrease in interest income in 2024.
Ligand may terminate the license agreement due to (i) our insolvency, (ii) our material uncured breach of the agreement, (iii) our failure to use commercially reasonable efforts to develop and commercialize sparsentan as described above or (iv) certain other conditions. We may terminate the license agreement due to a material uncured breach of the agreement by Ligand.
Ligand may terminate the Ligand License Agreement due to (i) our insolvency, (ii) our material uncured breach of the agreement, (iii) our failure to use commercially reasonable efforts to develop and commercialize sparsentan as described above or (iv) certain other conditions. We may terminate the Ligand License Agreement due to a material uncured breach of the agreement by Ligand.
See Note 9 to our unaudited Consolidated Financial Statements for further discussion. 78 Table of Contents Thiola License Agreement In 2014, we entered into a license agreement with Mission Pharmacal ("Mission"), pursuant to which we obtained an exclusive, royalty-bearing license to market, sell and commercialize Thiola (tiopronin) in the United States and Canada, and a non-exclusive license to use know-how relating to Thiola to the extent necessary to market Thiola.
See Note 9 to our unaudited Consolidated Financial Statements for further discussion. 78 Table of Contents Mission License Agreement In 2014, we entered into a license agreement with Mission Pharmacal ("Mission"), pursuant to which we obtained an exclusive, royalty-bearing license to market, sell and commercialize Thiola (tiopronin) in the United States and Canada, and a non-exclusive license to use know-how relating to Thiola to the extent necessary to market Thiola ("Mission License Agreement").
Under the terms of the license agreement, as subsequently amended, which runs through May 2029, we are obligated to pay to Mission the greater of $2.1 million, representing the guaranteed minimum royalty, or 20% of our Thiola net sales generated globally during each calendar year. See Note 9 to Consolidated Financial Statements for further discussion.
Under the terms of the Mission License Agreement, as subsequently amended, which runs through May 2029, we are obligated to pay to Mission the greater of $2.1 million, representing the guaranteed minimum royalty, or 20% of our Thiola net sales generated globally during each calendar year. See Note 9 to Consolidated Financial Statements for further discussion.
Factors that may affect financing requirements include, but are not limited to: • the timing, progress, cost and results of our clinical trials, preclinical studies and other discovery and research and development activities; • the timing and outcome of, and costs involved in, seeking and obtaining marketing approvals for our products, and in maintaining quality systems standards for our products; • the timing of, and costs involved in, commercial activities, including product marketing, sales and distribution; • our ability to successfully commercialize FILSPARI for IgAN, to obtain full regulatory approval for, and successfully commercialize, FILSPARI for the treatment of IgAN, and to obtain regulatory approval for, and successfully commercialize, sparsentan for FSGS and our other or future product candidates; • increases or decreases in revenue from our marketed products, including decreases in revenue resulting from generic entrants or health epidemics or pandemics; • debt service obligations on the 2025 Notes and 2029 Notes; • the number and development requirements of other product candidates that we pursue; • our ability to manufacture sufficient quantities of our products to meet expected demand; • the costs of preparing, filing, prosecuting, maintaining and enforcing any patent claims and other intellectual property rights, litigation costs and the results of litigation; • our ability to enter into collaboration, licensing or distribution arrangements and the terms and timing of these arrangements; • the potential need to expand our business, resulting in additional payroll and other overhead expenses; • the potential in-licensing of other products or technologies; • the emergence of competing technologies or other adverse market or technological developments; and • the impacts of inflation and resulting cost increases.
Factors that may affect financing requirements include, but are not limited to: • the timing, progress, cost and results of our clinical trials, preclinical studies and other discovery and research and development activities; • the timing and outcome of, and costs involved in, seeking and obtaining marketing approvals for our products, and in maintaining quality systems standards for our products; • the timing of, and costs involved in, commercial activities, including product marketing, sales and distribution; • our ability to successfully commercialize FILSPARI for the treatment of IgAN, and to obtain regulatory approval for, and successfully commercialize, sparsentan for FSGS and our other or future product candidates; • increases or decreases in revenue from our marketed products, including decreases in revenue resulting from generic entrants or health epidemics or pandemics; • debt service obligations on the 2025 Notes and 2029 Notes; • the number and development requirements of other product candidates that we pursue; • our ability to manufacture sufficient quantities of our products to meet expected demand; • the costs of preparing, filing, prosecuting, maintaining and enforcing any patent claims and other intellectual property rights, litigation costs and the results of litigation; • our ability to enter into collaboration, licensing or distribution arrangements and the terms and timing of these arrangements; • the potential need to expand our business, resulting in additional payroll and other overhead expenses; • the potential in-licensing of other products or technologies; • the emergence of competing technologies or other adverse market or technological developments; and • the impacts of inflation and resulting cost increases.
Generic versions of Thiola and Thiola EC have been approved and have impacted sales, and these or additional generic versions of either formulation could have a material adverse impact on sales and the recoverability of the intangible assets depending on the timing of the market entry and the related impact on net sales.
Generic versions of Thiola and Thiola EC have been approved, and these or additional generic versions of either formulation could have a material adverse impact on sales and the recoverability of the intangible assets depending on the timing of the market entry and the related impact on net sales.
Data to support the accelerated approval of FILSPARI was generated from the Phase 3 PROTECT Study, the largest head-to-head interventional study to date in IgAN.
Data to support the approval of FILSPARI was generated from the Phase 3 PROTECT Study, the largest head-to-head interventional study to date in IgAN.
Under the Stock Purchase Agreement ("the Agreement"), we agreed to make contingent cash payments up to an aggregate of $427.0 million based on the achievement of certain development, regulatory and commercialization events as set forth in the Agreement, as well as additional tiered mid-single digit royalty payments based upon future net sales of any pegtibatinase products in the US and Europe, subject to certain reductions as set forth in the Agreement, and a contingent payment in the event a pediatric rare disease voucher for any pegtibatinase product is granted.
Under the Stock Purchase Agreement ("the Agreement"), we agreed to make contingent cash payments up to an aggregate of $427.0 million based on the achievement of certain development, regulatory and commercialization events as set forth in the Agreement, as well as additional tiered mid-single digit royalty payments based upon future net sales of any pegtibatinase products in the U.S. and Europe, subject to certain reductions as set forth in the Agreement, and a contingent payment in the event a pediatric rare disease voucher for any pegtibatinase product is granted.
On March 11, 2022, coinciding with the issuance of the 2029 Notes, we completed our repurchase of $207.1 million aggregate principal amount of 2025 Notes for cash. After giving effect to the repurchase, the total remaining principal amount outstanding under the 2025 Notes as of December 31, 2023 was $68.9 million.
On March 11, 2022, coinciding with the issuance of the 2029 Notes, we completed our repurchase of $207.1 million aggregate principal amount of 2025 Notes for cash. After giving effect to the repurchase, the total remaining principal amount outstanding under the 2025 Notes as of December 31, 2024 was $68.9 million.
The DUPLEX Study protocol provided for an unblinded analysis of at least 190 patients to be performed after 36 weeks of treatment to evaluate the interim efficacy endpoint - the proportion of patients achieving a FSGS partial remission of proteinuria endpoint (FPRE), which is defined as urine protein-to-creatinine ratio (UPCR) ≤1.5 g/g and a >40% reduction in UPCR from baseline, at week 36.
The DUPLEX Study protocol provided for an unblinded analysis of at least 190 patients to be performed after 36 weeks of treatment to evaluate the interim efficacy endpoint - the proportion of patients achieving a FSGS partial remission of proteinuria endpoint (FPRE), which is defined 68 Table of Contents as urine protein-to-creatinine ratio (UPCR) ≤1.5 g/g and a >40% reduction in UPCR from baseline, at week 36.
The FDA acknowledged the high unmet need for approved therapies as well as the challenges in studying FSGS but indicated that the two-year results from the Phase 3 DUPLEX Study alone are not sufficient to support an sNDA submission.
The FDA acknowledged the high unmet need for approved therapies as well as the challenges in studying FSGS but indicated that the two-year results from the Phase 3 DUPLEX Study alone were not sufficient to support an sNDA submission.
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Our discussion and analysis of our financial condition and results of operations for 2023 as compared to 2022 are discussed below and should be read in conjunction with our audited Consolidated Financial Statements, including the notes thereto.
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Our discussion and analysis of our financial condition and results of operations for 2024 as compared to 2023 are discussed below and should be read in conjunction with our audited Consolidated Financial Statements, including the notes thereto.
Together with CSL Vifor, we also plan to engage with the EMA to determine the potential for a subsequent variation to the Conditional Marketing Authorization (CMA) of sparsentan for the treatment of FSGS, if the MAA of sparsentan in IgA nephropathy is approved.
Together with CSL Vifor, we also plan to engage with the EMA to determine the potential for a subsequent variation to the Conditional Marketing Authorization (CMA) of sparsentan for the treatment of FSGS, if the MAA for full approval of sparsentan in IgA nephropathy is approved.
Pegtibatinase demonstrated dose-dependent reductions in total homocysteine (tHcy) during the 12 weeks of treatment, and in the highest dose cohort to date evaluating 1.5mg/kg of pegtibatinase twice weekly (BIW), treatment with pegtibatinase resulted in rapid and sustained reductions in total homocysteine (tHcy) through 12 weeks of treatment, including a 55.1% mean relative reduction in tHcy from baseline as well as maintenance of tHcy below a clinically meaningful threshold of 100 μmol.
Pegtibatinase demonstrated dose-dependent reductions in total homocysteine (tHcy) during the 12 weeks of treatment, and in the highest dose cohort to date evaluating 1.5 mg/kg of pegtibatinase twice weekly (BIW), treatment with pegtibatinase resulted in rapid and sustained reductions in total homocysteine (tHcy) through 12 weeks of treatment, including a 55.1% mean relative reduction in tHcy from baseline as well as maintenance of tHcy below a clinically meaningful threshold of 100 μmol.
Upon approval of any of our late-stage programs, we intend to leverage the skills of our talented commercial organization which has successfully identified, supported and treated patients prescribed our approved products over the last ten years.
Upon approval of any of our late-stage programs, we intend to leverage the skills of our talented commercial organization which has successfully identified, supported and treated patients prescribed our approved products for over ten years.
In February 2021, we announced that the ongoing Phase 3 DUPLEX Study achieved its pre-specified interim FSGS partial remission of proteinuria endpoint following the 36-week interim period. After 36 weeks of treatment, 42.0 percent of patients receiving sparsentan achieved FPRE, compared to 26.0 percent of irbesartan-treated 67 Table of Contents patients (p=0.0094).
In February 2021, we announced that the ongoing Phase 3 DUPLEX Study achieved its pre-specified interim FSGS partial remission of proteinuria endpoint following the 36-week interim period. After 36 weeks of treatment, 42.0 percent of patients receiving sparsentan achieved FPRE, compared to 26.0 percent of irbesartan-treated patients (p=0.0094).
While a portion of people living with the disease are able to manage symptoms through diet and fluid intake, the prevalence of cystinuria in the US is estimated to be 10,000 to 12,000, indicating that there may be as many as 4,000 to 5,000 affected individuals with cystinuria in the US that would be candidates for Thiola or Thiola EC.
While a portion of people living with the disease are able to manage symptoms through diet and fluid intake, the prevalence of cystinuria in the U.S. is estimated to be 10,000 to 12,000, indicating that there may be as many as 4,000 to 5,000 affected individuals with cystinuria in the U.S. that would be candidates for Thiola or Thiola EC.
As of December 31, 2023, our evaluation concluded that all such milestones associated with our collaboration and licensing agreements remained constrained and therefore no adjustment to the respective transaction price was necessary.
As of December 31, 2024, our evaluation concluded that all such milestones associated with our collaboration and licensing agreements remained constrained and therefore no adjustment to the respective transaction price was necessary.
Allowances for commercial rebates are established based on actual payer information, which is reasonably estimated at the time of delivery for applicable products. Rebate discounts are included in accrued expenses in the accompanying consolidated balance sheets. Prompt Pay Discounts: We offer discounts to certain customers for prompt payments.
Allowances for commercial rebates are established based on actual payer information, which is reasonably estimated at the time of delivery for applicable products. Rebate discounts are included in accrued expenses in the accompanying consolidated balance sheets. 71 Table of Contents Prompt Pay Discounts: We offer discounts to certain customers for prompt payments.
Although the DUPLEX Study did not achieve its two-year primary endpoint with statistical significance over the active control irbesartan, we are encouraged by the results, including the secondary endpoints on proteinuria and topline exploratory endpoints, including renal outcomes, which trended favorably for sparsentan.
Although the DUPLEX Study did not achieve its two-year primary endpoint with statistical significance over the active control irbesartan, we are encouraged by the results, including the pre-specified secondary endpoints on proteinuria and exploratory endpoints, including renal outcomes, which trended favorably for sparsentan.
Purchase Agreement Proceeds Sale of Bile Acid Product Portfolio On July 16, 2023, we entered into the Purchase Agreement with Mirum, pursuant to which Mirum agreed to purchase substantially all of the assets primarily related to our business of development, manufacture and commercialization of the Products, which comprised our bile acid business.
Purchase Agreement Proceeds Sale of Bile Acid Product Portfolio In July 2023, we entered into the Purchase Agreement with Mirum, pursuant to which Mirum agreed to purchase substantially all of the assets primarily related to our business of development, manufacture and commercialization of the Products, which comprised our bile acid business.
Potential sources of cash over this time horizon may include net revenues from sales of our existing products and, if commercialized, our pipeline products, licensing revenue, the sale or maturity of marketable debt securities in our investment portfolio, the refinancing of all or a portion of our debt, including the 2025 Notes and 2029 Notes, on or before maturity, or the issuance of additional debt or equity.
Potential sources of cash over this time horizon may include net revenues from sales of our existing products and, if commercialized, our pipeline products, licensing revenue, the sale or maturity of marketable debt securities in our investment portfolio, the refinancing of all or a portion of our debt, on or before maturity, or the issuance of additional debt or equity.
For a discussion of our financial condition and results of operations for 2022 as compared to 2021, except as set forth below, please refer to Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 202 2 Annual Report on Form 10-K , which discussion is incorporated by reference herein.
For a discussion of our financial condition and results of operations for 2023 as compared to 2022, except as set forth below, please refer to Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 202 3 Annual Report on Form 10-K , which discussion is incorporated by reference herein.
Thiola EC became available to patients in July 2019. In May 2021, a generic option for the 100 mg version of the original formulation of Thiola (tiopronin tablets) became available and in June 2022, a second option for the 100 mg version of the original formulation of Thiola (tiopronin tablets) was approved.
Thiola EC became available to patients in July 2019. In May 2021, a generic option for the 100mg version of the original formulation of Thiola (tiopronin tablets) became available and in June 2022, a second option for the 100mg version of the original formulation of Thiola (tiopronin tablets) was approved.
For the year ended December 31, 2023, we capitalized $4.4 million to intangible assets for royalties owed on net sales of FILSPARI. The license agreement will continue until neither party has any further payment obligations under the agreement and is expected to continue for up to 20 years from the effective date.
For the year ended December 31, 2024, we capitalized $20.3 million to intangible assets for royalties owed on net sales of FILSPARI. The Ligand License Agreement will continue until neither party has any further payment obligations under the agreement and is expected to continue for up to 20 years from the effective date.
Beyond the next 12 months and over the foreseeable future, our known commitments and potential financial obligations will likely include ongoing operations funding, operating lease payments, interest payments on our outstanding debt, royalties on sales of our existing commercialized products, research and development expenses pertaining to clinical and preclinical development activities across our pipeline, milestone and royalty payments associated with FILSPARI, pegtibatinase, and other developmental programs based upon the achievement of certain agreement-specific criteria, along with sales-based royalties and the repayment of principal on the outstanding 2025 Notes and 2029 Notes upon their respective maturities.
Beyond the next 12 months and over the foreseeable future, our known commitments and potential financial obligations will likely include ongoing operations funding, operating lease payments, interest payments on our outstanding debt, royalties on sales of our existing commercialized products, research and development expenses pertaining to clinical and preclinical development activities across our pipeline, milestone and royalty payments associated with FILSPARI, pegtibatinase, and other developmental programs based upon the achievement of certain agreement-specific criteria, along with sales-based royalties and the repayment of principal on the outstanding 2029 Notes, which mature on September 1, 2029.
In addition, depending on prevailing market conditions, our liquidity requirements, contractual restrictions, and other factors, we may also from time to time seek to retire or purchase our outstanding debt, including the 2025 Notes or 2029 Notes, through cash purchases and/or exchanges for equity securities, in open market purchases, privately negotiated transactions or otherwise.
In addition, depending on prevailing market conditions, our liquidity requirements, contractual restrictions, and other factors, we may also from time to time seek to retire or purchase our outstanding debt through cash purchases and/or exchanges for equity securities, in open market purchases, privately negotiated transactions or otherwise.
In June 2019 we announced that the FDA approved 100 mg and 300 mg tablets of Thiola EC, an enteric-coated formulation of Thiola, to be used for the treatment of cystinuria. Thiola EC offers the potential for administration with or without food, and the ability to reduce the number of tablets necessary to manage cystinuria.
In June 2019 we announced that the FDA approved 100mg and 300mg tablets of Thiola EC, an enteric-coated formulation of Thiola, to be used for the treatment of cystinuria. Thiola EC offers the potential for administration with or without food, and the ability to reduce the number of tablets necessary to manage cystinuria.
We have the right to terminate the Agreements and return the shares for a nominal price at any time upon 60 days' notice, subject to survival of contingent obligations, if any. See Note 5 to Consolidated Financial Statements for further discussion.
We have the right to terminate the Agreements and sell the shares back for a nominal payment at any time upon 60 days' notice, subject to survival of contingent obligations, if any. See Note 5 to Consolidated Financial Statements for further discussion.
In December 2023, we announced that we completed our planned Type C meeting with the FDA to discuss previously reported results from the Phase 3 DUPLEX Study of sparsentan in FSGS.
In December 2023, we announced that we completed a planned Type C meeting with the FDA to discuss results from the Phase 3 DUPLEX Study of sparsentan in FSGS.
These consist of internal shared resources related to the development and maintenance of systems and processes applicable to all of our programs. We currently have one Phase 1/2 clinical trial and three Phase 3 clinical trials in process that are in various stages of activity, with ongoing non-clinical support trials.
These consist of internal shared resources related to the development and maintenance of systems and processes applicable to all of our programs. We currently have four Phase 3 clinical trials in process that are in various stages of activity, with ongoing non-clinical support trials.
We remain responsible for the clinical development of sparsentan in the applicable territories and we will retain all rights to sparsentan in the United States and rest of world outside of the territories licensed to CSL Vifor and Renalys, provided that CSL Vifor has a right of negotiation to expand the licensed territories into Canada, China, Brazil and/or Mexico.
We will retain all rights to sparsentan in the United States and rest of world outside of the territories licensed to CSL Vifor and Renalys, provided that CSL Vifor has a right of negotiation to expand the licensed territories into Canada, China, Brazil and/or Mexico.
Following successful meetings with the Pharmaceuticals and Medical Devices Agency (PMDA) in 2023, Renalys plans to initiate an open label registrational study of sparsentan in Japan in the second quarter of 2024 to support potential approval of sparsentan in Japan.
Following successful meetings with the Pharmaceuticals and Medical Devices Agency (PMDA) in 2023, in the second quarter of 2024 Renalys initiated an open label registration study of sparsentan in Japan to support potential approval of sparsentan in Japan.
Intangible assets subject to amortization are reviewed for impairment whenever events or circumstances indicate that the carrying amount of these assets may not be recoverable and are also reviewed annually to determine whether any impairment is necessary.
Impairment of Intangible Assets subject to amortization Intangible assets subject to amortization include certain license agreements and purchased technologies. Intangible assets subject to amortization are reviewed for impairment whenever events or circumstances indicate that the carrying amount of these assets may not be recoverable and are also reviewed annually to determine whether any impairment is necessary.
Pegtibatinase Pegtibatinase is a novel investigational human enzyme replacement candidate being evaluated for the treatment of classical homocystinuria (HCU). Classical HCU is a rare metabolic disorder characterized by elevated levels of plasma homocysteine that can lead to vision, skeletal, circulatory and central nervous system complications. It is estimated that there are approximately 7,000 to 10,000 people living with HCU globally.
Pegtibatinase Pegtibatinase is a novel investigational human enzyme replacement candidate being evaluated for the treatment of classical homocystinuria (HCU). Classical HCU is a rare metabolic disorder characterized by elevated levels of plasma homocysteine that can lead to vision, skeletal, circulatory and central nervous system complications. We estimate that there are approximately 7,000 to 10,000 addressable HCU patients globally.
Under the terms of the License Agreement, we received an upfront payment of $55.0 million in September 2021, and will be eligible for up to $135.0 million in aggregate regulatory and market access related milestone payments and up to $655.0 million in aggregate sales-based milestone payments for a total potential value of up to $845.0 million.
Under the terms of the License Agreement, we will be eligible for up to $135.0 million in aggregate regulatory and market access related milestone payments and up to $655.0 million in aggregate sales-based milestone payments for a total potential value of up to $845.0 million.
Refer to Note 19 of our Consolidation Financial Statements for additional information. 69 Table of Contents Strategic Reorganization In December 2023, we implemented an approximate 20% workforce reduction focused on non-field-based employees in an effort to align our resources on the ongoing FILSPARI launch and the pivotal Phase 3 HARMONY Study to support the potential approval of pegtibatinase as the first potential disease-modifying treatment for HCU.
Strategic Reorganization In December 2023, we implemented an approximate 20% workforce reduction focused on non-field-based employees in an effort to align our resources on the ongoing FILSPARI launch and the pivotal Phase 3 HARMONY Study to support the potential approval of pegtibatinase as the first potential disease-modifying treatment for HCU.
Over the next 12 months, our expected financial obligations include, but are not limited to, funding our operations, operating lease payments, interest payments on our outstanding debt, anticipated milestone payments, royalties on sales of our existing commercialized products, research and development expenses pertaining to clinical and preclinical development activities across our pipeline, expenses associated with the launch of FILSPARI.
Over the next 12 months, our expected financial obligations include, but are not limited to, funding our operations, operating lease payments, interest payments on our outstanding debt, anticipated milestone payments, royalties on sales of our existing commercialized products, research and development expenses pertaining to clinical and preclinical development activities across our pipeline, expenses associated with the launch of FILSPARI and the anticipated repayment of the outstanding principal of approximately $68.9 million on the 2025 Notes which mature on September 15, 2025.
We currently have one Phase 1/2 clinical trial and three Phase 3 clinical trials in process that are in varying stages of activity, with ongoing non-clinical support trials that are significant and changes in estimates could have a material impact on expenses we recognize.
We currently have four Phase 3 clinical trials in 72 Table of Contents process that are in varying stages of activity, with ongoing non-clinical support trials that are significant and changes in estimates could have a material impact on expenses we recognize.
For the years ended December 31, 2023, 2022 and 2021, the Company recorded a net product revenue increase of $0.4 million, $0.2 million, and $0.2 million, respectively, related to performance obligations satisfied in previous periods.
For the years ended December 31, 2024 and 2023, the Company recorded adjustments to net product revenue of $0.5 million and $0.4 million, respectively, related to performance obligations satisfied in previous periods.
The bile acid business has been classified as a discontinued operation for all periods presented and is excluded from the following discussion of the results of our continuing operations in the results of operations.
The bile acid business has been classified as a discontinued operation for all periods presented and is excluded from the following discussion of the results of our continuing operations in the results of operations. Refer to Note 19 of our Consolidation Financial Statements for additional information.
We also make grants to research and non-profit organizations to conduct research which may lead to new intellectual properties that we may subsequently license under separately negotiated license agreements. Such grants may be funded in lump sums or installments.
We also make grants to research and non-profit organizations to conduct research which may lead to new intellectual properties that we may subsequently license under separately negotiated license agreements.
We are party to a collaboration agreement with PharmaKrysto Limited and their early-stage cystinuria discovery program, whereby we are responsible for funding all research and development expenses for the pre-clinical activities associated with the cystinuria program.
We acquired pegtibatinase as part of the November 2020 acquisition of Orphan Technologies Limited. Preclinical Program: We are party to a collaboration agreement with PharmaKrysto Limited and their early-stage cystinuria discovery program, whereby we are responsible for funding all research and development expenses for the pre-clinical activities associated with the cystinuria program.
The gain consists of net consideration, including the upfront payment and the deduction of investment banker fees owed upon the Closing, plus the derecognition of the carrying value of the net liabilities included in the transaction and the immaterial tax due on the sale.
The gain consists of net consideration, including the upfront payment and the deduction of investment banker fees owed upon the Closing, plus the derecognition of the carrying value of the net liabilities included in the transaction and the immaterial tax due on the sale. See Note 19 to our Consolidated Financial Statements for further discussion.
Pre-clinical data have shown that blockade of both endothelin type A and angiotensin II type 1 pathways in forms of rare chronic kidney disease, reduces proteinuria, protects podocytes and prevents glomerulosclerosis and mesangial cell proliferation.
Pre-clinical data have shown that blockade of both endothelin type A and angiotensin II type 1 pathways in forms of rare chronic kidney disease, reduces proteinuria, protects podocytes and prevents glomerulosclerosis and mesangial cell proliferation. FILSPARI has been granted seven years of Orphan Drug Exclusivity in the U.S.
The 2025 Notes do not contain any financial or operating covenants or any restrictions on the payment of dividends, the issuance of other indebtedness or the issuance or repurchase of securities by us.
The 2025 Notes do not contain any financial or operating covenants or any restrictions on the payment of dividends, the issuance of other indebtedness or the issuance or repurchase of securities by us. See Note 7 to Consolidated Financial Statements for further discussion.
See Note 7 to Consolidated Financial Statements for further discussion. 79 Table of Contents Funding Requirements We believe that our available cash and short-term investments as of the date of this filing will be sufficient to fund our anticipated level of operations beyond the next 12 months.
Funding Requirements We believe that our available cash and short-term investments as of the date of this filing will be sufficient to fund our anticipated level of operations beyond the next 12 months from the date of this filing.
Discontinued Operations Results of discontinued operations are as follows ( in thousands ): Year Ended December 31, Year Ended December 31, 2023 2022 Change 2022 2021 Change Income from discontinued operations, net of tax $ 264,934 $ 52,986 $ 211,948 $ 52,986 $ 37,201 $ 15,785 The $211.9 million increase in income from discontinued operations, net of tax for the year ended December 31, 2023 compared to the year ended December 31, 2022 is primarily due to the August 31, 2023 sale of our bile acid business, which resulted in a gain, net of tax, of $226.0 million.
Discontinued Operations Results of discontinued operations are as follows ( in thousands ): Year Ended December 31, 2024 2023 Change (Loss) income from discontinued operations, net of tax $ (915) $ 264,934 $ (265,849) The $265.8 million change in (loss) income from discontinued operations, net of tax for the year ended December 31, 2024 compared to the year ended December 31, 2023 is primarily due to the August 31, 2023 sale of our bile acid business, which resulted in a gain, net of tax, of $226.0 million.
The HARMONY Study is a global, randomized, multi-center, double-blind, placebo-controlled Phase 3 clinical trial designed to evaluate the 68 Table of Contents efficacy and safety of pegtibatinase as a novel treatment to reduce total homocysteine (tHcy) levels. Topline results from the HARMONY Study are expected in 2026.
The HARMONY Study is a global, randomized, multi-center, double-blind, placebo-controlled Phase 3 clinical trial designed to evaluate the efficacy and safety of pegtibatinase as a novel treatment to reduce total homocysteine (tHcy) levels. In the beginning of 2024, the first patients were dosed in the HARMONY Study.
For the year ended December 31, 2023 compared to the year ended December 31, 2022, our cost of goods sold - license and collaboration increased by $3.0 million due to the sale of active pharmaceutical ingredients to CSL Vifor in March 2023.
For the year ended December 31, 2024 compared to the year ended December 31, 2023, our cost of goods sold - license and collaboration decreased by $2.7 million, primarily due to the sale of active pharmaceutical ingredients to CSL Vifor in the first quarter of 2023.
For the years ended December 31, 2023 and 2022, we had the following balances and financial performance ( in thousands ): 76 Table of Contents December 31, 2023 December 31, 2022 Cash and cash equivalents $ 58,176 $ 61,688 Marketable debt securities, at fair value $ 508,675 $ 388,557 Convertible debt $ 377,263 $ 375,545 Accumulated deficit $ (1,125,622) $ (1,014,223) Stockholders' equity $ 200,810 $ 42,851 Net working capital* $ 438,867 $ 344,274 Net working capital ratio** 3.47 3.42 * Current assets less current liabilities **Current assets divided by current liabilities As of December 31, 2023, we had cash and cash equivalents of $58.2 million and available-for-sale marketable debt securities of $508.7 million.
For the years ended December 31, 2024 and 2023, we had the following balances and financial performance ( in thousands ): December 31, 2024 December 31, 2023 Cash and cash equivalents $ 58,535 $ 58,176 Marketable debt securities, at fair value $ 312,166 $ 508,675 Convertible debt $ 378,988 $ 377,263 Accumulated deficit $ (1,447,167) $ (1,125,622) Stockholders' equity $ 59,077 $ 200,810 Net working capital* $ 215,951 $ 438,867 Net working capital ratio** 2.08 3.47 * Current assets less current liabilities **Current assets divided by current liabilities 76 Table of Contents As of December 31, 2024, we had cash and cash equivalents of $58.5 million and available-for-sale marketable debt securities of $312.2 million.
Sparsentan has been granted Orphan Drug Designation for the treatment of IgAN in the U.S. and the EEA and FILSPARI has been granted seven years of Orphan Drug Exclusivity in the U.S. for the reduction of proteinuria in adults with primary IgAN at risk of rapid disease progression.
(running from the date of accelerated approval) for the reduction of proteinuria in adults with primary IgAN at risk of rapid disease progression, and has been granted a separate seven years of Orphan Drug Exclusivity in the U.S.
On January 30, 2024, the FDA approved an additional generic version of Thiola EC (100mg and 300mg). Accordingly, Thiola EC is subject to immediate generic competitio n, which could impact our sales of Thiola EC. Sale of Bile Acid Product Portfolio On July 16, 2023, we entered into an Asset Purchase Agreement (the “Purchase Agreement”) with Mirum Pharmaceuticals, Inc.
Accordingly, Thiola EC is subject to generic competitio n. Sale of Bile Acid Product Portfolio On July 16, 2023, we entered into an Asset Purchase Agreement (the “Purchase Agreement”) with Mirum Pharmaceuticals, Inc.
In May 2023, we announced positive topline results from the sixth cohort of the Phase 1/2 COMPOSE Study, which was initiated to inform and refine formulation work for future development and commercial purposes and to further evaluate the dose response curve for pegtibatinase, and to further inform our pivotal development program to ultimately support potential approval of pegtibatinase for the treatment of HCU.
Additionally, in a dose-dependent manner in the study to date, methionine levels were substantially reduced and cystathionine levels were substantially elevated following treatment with pegtibatinase, suggesting that pegtibatinase acts in a manner similar to the native CBS enzyme. 69 Table of Contents In May 2023, we announced positive topline results from the sixth cohort of the Phase 1/2 COMPOSE Study, which was initiated to inform and refine formulation work for future development and commercial purposes and to further evaluate the dose response curve for pegtibatinase, and to further inform our pivotal development program to ultimately support potential approval of pegtibatinase for the treatment of HCU.
("Ligand") for a worldwide sublicense to develop, manufacture and commercialize sparsentan (the “Ligand License Agreement”). As consideration for the license, the Company is required to make substantial payments upon the achievement of certain milestones, totaling up to $114.1 million.
Royalties and Contingent Cash Payments Ligand License Agreement In 2012, we entered into an agreement with Ligand Pharmaceuticals, Inc. ("Ligand") for a worldwide sublicense to develop, manufacture and commercialize sparsentan (the “Ligand License Agreement”). As consideration for the license, we are required to make substantial payments upon the achievement of certain milestones, totaling up to $114.1 million.
At December 31, 2023, our evaluation of excess inventory and obsolescence considered certain minimum purchase obligations, which in combination with lower forecasted sales of FILSPARI resulted in a $3.2 million charge to cost of goods sold. The charge to cost of goods sold included a $2.1 million write-down of inventory balances and $1.1 million accrued for firm purchase commitments.
We began capitalizing inventory costs associated with FILSPARI (sparsentan) following the February 2023 approval for treatment in IgAN. At December 31, 2023, our evaluation of excess inventory and obsolescence considered certain minimum purchase obligations, which in combination with lower forecasted sales of FILSPARI resulted in a $3.2 million charge to cost of goods sold.
These restructuring adjustments are expected to result in an estimated annualized savings of approximately $25.0 million beginning in 2024. We believe that our available cash and short-term investments as of the date of this filing, together with anticipated cash generated from operations, will be sufficient to fund our anticipated level of operations beyond the next 12 months.
We believe that our available cash and short-term investments as of the date of this filing, together with anticipated cash generated from operations, will be sufficient to fund our anticipated level of operations beyond the next 12 months from the date of this filing.
Borrowings Convertible Senior Notes Due 2029 On March 11, 2022, we completed a registered underwritten public offering of $316.3 million aggregate principal amount of 2.25% Convertible Senior Notes due 2029 (“2029 Notes”).
We have appealed the pricing decision and will pursue an appeal of the amount paid with the Competent Administrative Court. Borrowings Convertible Senior Notes Due 2029 On March 11, 2022, we completed a registered underwritten public offering of $316.3 million aggregate principal amount of 2.25% Convertible Senior Notes due 2029 (“2029 Notes”).
Pursuant to the Purchase Agreement, after the Closing, we are eligible to receive up to $235.0 million upon the achievement of certain milestones based on specified amounts of annual net sales (tiered from $125.0 million to $500.0 million) of the Products.
Pursuant to the Purchase Agreement, after the Closing, we are eligible to receive up to $235.0 million upon the achievement of certain milestones based on specified amounts of annual net sales (tiered from $125.0 million to $500.0 million) of the Products. 70 Table of Contents A $226.0 million gain, net of tax, was recognized on the transaction as a component of net income from discontinued operations in the Consolidated Statements of Operations.
Future capital requirements will also depend on the extent to which we acquire or invest in additional complementary businesses, products and technologies. 80 Table of Contents Cash Flows The following table summarizes our cash flows for the periods set forth below ( in thousands ): Year Ended December 31, 2023 2022 2021 Net cash used in operating activities $ (280,021) $ (186,291) $ (14,792) Net cash provided by (used in) investing activities 55,776 (32,553) (137,623) Net cash provided by financing activities 218,752 117,573 231,683 Effect of exchange rate changes on cash 1,981 (2,794) 1,713 Net (decrease) increase in cash and cash equivalents (3,512) (104,065) 80,981 Cash and cash equivalents, beginning of year 61,688 165,753 84,772 Cash and cash equivalents, end of year 58,176 61,688 165,753 Marketable debt securities, at fair value 508,675 388,557 387,129 Total cash and cash equivalents and marketable debt securities $ 566,851 $ 450,245 $ 552,882 Management considers marketable debt securities to be available to fund current operations, and they are classified as available for sale and included within current assets in our Consolidated Balance Sheets.
Future capital requirements will also depend on the extent to which we acquire or invest in additional complementary businesses, products and technologies. 80 Table of Contents Cash Flows from Continuing Operations The following table summarizes our cash flows for the periods set forth below ( in thousands ): Year Ended December 31, 2024 2023 2022 Net cash used in operating activities - continuing operations $ (230,024) $ (325,357) $ (260,846) Net cash provided by (used in) investing activities - continuing operations 99,325 (151,626) (32,553) Net cash provided by financing activities - continuing operations 139,422 220,134 120,052 Cash flows from continuing operations 8,723 (256,849) (173,347) Cash flows from discontinued operations (7,451) 251,356 72,076 Effect of exchange rate changes on cash (913) 1,981 (2,794) Net increase (decrease) in cash and cash equivalents 359 (3,512) (104,065) Cash and cash equivalents, beginning of year 58,176 61,688 165,753 Cash and cash equivalents, end of year 58,535 58,176 61,688 Marketable debt securities, at fair value 312,166 508,675 388,557 Total cash and cash equivalents and marketable debt securities $ 370,701 $ 566,851 $ 450,245 Management considers marketable debt securities to be available to fund current operations, and they are classified as available for sale and included within current assets in our Consolidated Balance Sheets.
Therefore, cash and short-term investments available to fund operations is $566.9 million as of December 31, 2023. Cash Flows from Operating Activities Operating activities used $280.0 million of cash during the year ended December 31, 2023 compared to $186.3 million of cash used for the year ended December 31, 2022.
Therefore, cash and short-term investments available to fund operations is $370.7 million as of December 31, 2024. Cash Flows from Operating Activities Cash used in operating activities from continuing operations for the year ended December 31, 2024 was $230.0 million compared to cash used of $325.4 million for the year ended December 31, 2023.
Convertible Senior Notes Due 2025 On September 10, 2018, we completed a registered underwritten public offering of $276.0 million aggregate principal amount of 2.50% Convertible Senior Notes due 2025 ("2025 Notes"), and entered into a base indenture and supplemental indenture agreement ("2025 Indenture") with respect to the 2025 Notes.
The 2029 Notes do not contain any financial or operating covenants or any restrictions on the payment of dividends, the issuance of other indebtedness or the issuance or repurchase of securities by us. 79 Table of Contents Convertible Senior Notes Due 2025 On September 10, 2018, we completed a registered underwritten public offering of $276.0 million aggregate principal amount of 2.50% Convertible Senior Notes due 2025 ("2025 Notes"), and entered into a base indenture and supplemental indenture agreement ("2025 Indenture") with respect to the 2025 Notes.
Cash Flows from Financing Activities For the year ended December 31, 2023, cash provided by financing activities was $218.8 million compared to cash provided of $117.6 million for the year ended December 31, 2022.
Cash Flows from Investing Activities Cash provided by investing activities from continuing operations for the year ended December 31, 2024 was $99.3 million compared to cash provided of $151.6 million for the year ended December 31, 2023.
It is a global, randomized, multicenter, double-blind, parallel-arm, active-controlled clinical trial that evaluated the safety and efficacy of 400mg of sparsentan, compared to 300mg of irbesartan, in 404 patients ages 18 years and up with IgAN and persistent proteinuria despite available ACE or ARB therapy, and is currently ongoing in the open label extension phase of the study. 66 Table of Contents The PROTECT Study protocol provided for an unblinded analysis of at least 280 patients to be performed after 36 weeks of treatment to evaluate the primary efficacy endpoint - the change in proteinuria (UPCR) at week 36 from baseline.
It is a global, randomized, multicenter, double-blind, parallel-arm, active-controlled clinical trial that evaluated the safety and efficacy of 400mg of sparsentan, compared to 300mg of irbesartan, in 404 patients ages 18 years and up with IgAN and persistent proteinuria despite available angiotensin converting enzyme (ACE) inhibitor or angiotensin receptor blockers (ARB) therapy, and is currently ongoing in the open label extension phase of the study.
See Note 4 to Consolidated Financial Statements for further discussion. 77 Table of Contents Equity Offerings 2023 Underwritten Public Offering of Common Stock In February 2023, we sold an aggregate of approximately 9.7 million shares of our common stock and pre-funded warrants to purchase 1.25 million shares of our common stock in an underwritten public offering, at a price to the public of $21.00 per share of common stock and $20.9999 per pre-funded warrant.
The net proceeds to us from the offering, after deducting the underwriting discounts and offering expenses, were approximately $134.7 million. 2023 Underwritten Public Offering of Common Stock In February 2023, we sold an aggregate of approximately 9.7 million shares of our common stock and pre-funded warrants to purchase 1.25 million shares of our common stock in an underwritten public offering, at a price to the public of $21.00 per share of common stock and $20.9999 per pre-funded warrant.
Purchase Commitments Manufactured Product Certain of our contractual arrangements with contract manufacturing organizations ("CMOs") require binding forecasts or commitments to purchase minimum amounts for the manufacture of drug product supply, which may be material to our financial statements. Royalties and Contingent Cash Payments Ligand License Agreement In 2012, we entered into an agreement with Ligand Pharmaceuticals, Inc.
See Note 18 to Consolidated Financial Statements for further discussion. Purchase Commitments Manufactured Product Certain of our contractual arrangements with contract manufacturing organizations ("CMOs") require binding forecasts or commitments to purchase minimum amounts for the manufacture of drug product supply, which may be material to our financial statements.
Sources of cash over this period include net revenues from sales of our products, the sale or maturity of investments in our portfolio of marketable debt securities, and certain earned and potential milestone payments. We anticipate achieving milestones with both FILSPARI and pegtibatinase that will result in us making net payments of approximately $50.0 million during the next 12 months.
Sources of cash over this period include net revenues from sales of our products, the sale or maturity of investments in our portfolio of marketable debt securities, and certain earned and potential milestone payments.
The increase in cash provided was due to the March 2023 issuance of common stock and pre-funded warrants through an underwritten public offering that provided $215.8 million in net proceeds, compared with net proceeds of $95.0 million from the March 2022 issuance of the 2029 Notes and repurchase of the 2025 Notes and $19.5 million in net proceeds from sales under the ATM Agreement in 2022.
The change was due to the November 2024 issuance of common stock through an underwritten public offering that provided $134.7 million in net proceeds, compared to $215.8 million in net proceeds from the March 2023 issuance of common stock and pre-funded warrants.
These generic versions of the original formulation of Thiola have impacted our sales, and these or additional generic versions of either formulation could have a material adverse impact on sales. During 2023, two generic versions of Thiola EC (100 mg and 300 mg) were approved by the FDA.
These generic versions of the original formulation of Thiola have impacted our sales, and these or additional generic versions of either formulation could have a material adverse impact on sales. As of December 31, 2024, several generic options for the 100mg and 300mg versions of Thiola EC have been approved by the FDA and become available.
IgAN is characterized by hematuria, proteinuria, and variable rates of progressive renal failure. With an estimated prevalence of up to 150,000 people in the United States and greater numbers in Europe and Asia, IgAN is the most common primary glomerular disease.
With an estimated prevalence of up to 150,000 people in the United States and greater numbers in Europe and Asia, IgAN is the most common primary glomerular disease. Most patients are diagnosed between the ages of 16 and 35, with up to 40% progressing to kidney failure within 15 years.
At-the-Market Equity Offering In February 2020, we entered into an Open Market Sale Agreement ("ATM Agreement") with Jefferies LLC, as agent (“Jefferies”), pursuant to which we may offer and sell, from time to time through Jefferies, shares of our common stock having an aggregate offering price of up to $100.0 million.
At-the-Market Equity Offering In October 2024, we filed a prospectus supplement to the prospectus included in our registration statement on Form S-3 (File No. 333-281194), pursuant to which we may offer and sell, from time to time through Jefferies LLC, as agent (“Jefferies”), up to $100.0 million of our common stock pursuant to an Amended and Restated Open Market Sale Agreement ("ATM Agreement") with Jefferies dated October 2024.
Prior to the February 2023 FDA accelerated approval of FILSPARI (sparsentan), we recognized approximately $7.5 million in research and development expenses related to the production of active pharmaceutical ingredients to support the commercial launch of FILSPARI. For the year ended December 31, 2023, sales of FILSPARI primarily consisted of zero-cost inventories.
Prior to the February 2023 FDA accelerated approval of FILSPARI (sparsentan), we expensed the production of active pharmaceutical ingredients purchased to support the commercial launch of FILSPARI in research and development expenses.
We accrue for the calculated prompt pay discount based on the gross amount of each invoice for those customers at the time of sale. Product Returns: Consistent with industry practice, we offer our customers a limited right to return product purchased directly from us, which is principally based upon the product’s expiration date.
Other fees are recorded as an offset to revenue based on contractual terms at the time revenue from the sale is recognized. Product Returns: Consistent with industry practice, we offer our customers a limited right to return product purchased directly from us, which is principally based upon the product’s expiration date. Historically, returns have been immaterial.
These restructuring adjustments are expected to result in an estimated annualized savings of approximately $25.0 million beginning in 2024, and an estimated non-recurring charge of approximately $12.0 million to $14.0 million, of which $11.4 million was recognized in the fourth quarter 2023. We expect that we will incur the remaining estimated restructuring costs during 2024.
These restructuring initiatives were expected to result in an estimated non-recurring charge of approximately $12.0 million to $14.0 million, the majority of which was recognized in the fourth quarter of 2023.
The calculation of the accrual for co-pay assistance is based on an estimate of claims and the estimated cost per claim associated with product that has been recognized as revenue. Payments received under collaboration and licensing agreements may include non-refundable fees at the inception of the arrangements, milestone payments for specific achievements and royalties on the sale of products.
Payments received under collaboration and licensing agreements may include non-refundable fees at the inception of the arrangements, milestone payments for specific achievements and royalties on the sale of products.
Results from the urine protein/creatinine ratio (UP/C) endpoint in the study are expected in the second half of 2025 to support a submission for approval to PMDA. Under the terms of the licensing agreement, Renalys will be responsible for development, regulatory matters, and commercialization in the licensed territories.
In July 2024, Renalys announced that the first patient was dosed in the study, and in January 2025, Renalys announced achievement of full enrollment in the study. Results from the urine protein/creatinine ratio (UP/C) endpoint in the study are expected in the second half of 2025 to support a submission for approval to PMDA.
We anticipate an opinion by the Committee for Medicinal Products for Human Use (the "CHMP") in the first quarter of 2024. In January 2024, we announced our entry into an exclusive licensing agreement with Renalys Pharma, Inc. ("Renalys"), to bring sparsentan to patients in Japan and other countries in Asia, for the treatment of IgAN.
In January 2024, we announced our entry into an exclusive licensing agreement with Renalys Pharma, Inc. ("Renalys"), to bring sparsentan for the treatment of IgAN to patients in Japan and other countries in Asia. Renalys will hold regional rights to sparsentan for Japan, South Korea, Taiwan, Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam.
We are also entitled to receive tiered double-digit royalties of up to 40 percent of annual net sales of sparsentan in the Licensed Territories.
We are also entitled to receive tiered double-digit to mid-20 percent royalties of annual net sales of sparsentan in the licensed territories. In addition, we received an option to purchase shares of common stock of Renalys (“Option Agreement”), which we exercised in January 2024.
FILSPARI® (sparsentan) On February 17, 2023, the FDA granted accelerated approval of FILSPARI® (sparsentan) to reduce proteinuria in adults with primary IgAN at risk of rapid disease progression, generally a UPCR ≥1.5 gram/gram.
FILSPARI® (sparsentan) On September 5, 2024, the FDA granted full approval of FILSPARI® (sparsentan) to slow kidney function decline in adults with primary Immunoglobulin A nephropathy (IgAN) who are at risk of disease progression. FILSPARI had previously been granted accelerated approval in February 2023 based on the surrogate marker of proteinuria.
For the year ended December 31, 2023, we recognized restructuring costs of $11.4 million, comprised of one-time termination benefits, including severance, continuation of health insurance coverage, and other benefits for a specified period of time. Other Income/Expenses Other income/expenses consists of interest income and expense, finance expense and miscellaneous other income/expenses.
Of the $13.8 million recognized to date, $2.4 million was recognized during the year ended December 31, 2024, including $1.2 million related to impairment and disposal costs and initial direct costs to obtain a sublease. Restructuring costs were primarily comprised of one-time termination benefits, including severance, continuation of health insurance coverage, and other benefits for a specified period of time.