Received 459 new patient start forms for FILSPARI® (sparsentan) in the fourth quarter of 2023; preliminary net product sales of FILSPARI totaled
Company on track to submit sNDA to FDA in Q1 2024 for conversion of the existing
CHMP opinion on potential approval of sparsentan for the treatment of IgAN in
Pivotal Phase 3 study of pegtibatinase in classical homocystinuria (HCU) underway
"Our strong fourth quarter results reflect the growing demand for FILSPARI in IgAN driven by our field teams’ education and outreach efforts to healthcare providers,” said
Program Updates and Anticipated 2024 Milestones
FILSPARI (sparsentan) is an endothelin and angiotensin II receptor antagonist indicated to reduce proteinuria in adults with primary immunoglobulin A nephropathy (IgAN) at risk of rapid disease progression, generally a UPCR ≥1.5 g/g. In 2024, the Company anticipates conversion of FILSPARI from accelerated approval to full approval for IgAN as well as a potential approval for the treatment of IgAN in
FILSPARI (sparsentan) – IgAN
- In the fourth quarter of 2023, the Company received 459 new patient start forms (PSFs), reflecting continued strength in physician demand.
- Preliminary net product sales of FILSPARI in the fourth quarter of 2023 were
$15 million; $30 millionsince the beginning of commercial launch in February 2023.
- The Company is on track to submit a supplemental New Drug Application (sNDA) in the first quarter of 2024 for conversion of the existing
U.S.accelerated approval of FILSPARI to full approval.
- Following submission of the two-year results from the PROTECT Study of FILSPARI in IgAN and a corresponding procedural review clock-stop, the Company and its collaborator CSL Vifor anticipate a review opinion by the Committee for Medicinal Products for Human Use (CHMP) on the potential approval of the Conditional Marketing Authorization (CMA) application for sparsentan for the treatment of IgAN in
Europein the first quarter of 2024. If approved, sparsentan would receive CMA in all member states of the European Union, as well as in Iceland, Liechtenstein, and Norway.
- In 2024, the Company expects additional data from its ongoing open-label studies evaluating the safety and efficacy of sparsentan in combination with sodium glucose cotransporter-2 inhibitors (SGLT2i) as well as from the ongoing SPARTAN Study evaluating the potential effect of FILSPARI as a first-line therapy in patients with newly diagnosed IgAN.
- In 2024, the Company anticipates inclusion of FILSPARI into the Kidney Disease Improving Global Outcomes (KDIGO) Clinical Practice Guideline for the Management of Glomerular Diseases.
Sparsentan – Focal Segmental Glomerulosclerosis (FSGS)
- In 2024, the Company is conducting additional analyses of FSGS data and will engage with regulators to evaluate potential regulatory pathways for a sparsentan FSGS indication.
Pegtibatinase – Classical HCU
The Company is advancing pegtibatinase, a novel investigational enzyme replacement therapy with the potential to become the first and only disease-modifying therapy for people living with classical homocystinuria (HCU).
December 2023, the Company initiated the pivotal Phase 3 HARMONY Study to support the potential approval of pegtibatinase for the treatment of classical HCU. 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. The trial is expected to enroll approximately 70 patients with a diagnosis of classical HCU and tHcy levels ≥50 μM while maintaining their standard-of-care treatment. Participants will be randomized 1:1 to receive 2.5 mg/kg of pegtibatinase or placebo, administered subcutaneously, for a 24-week blinded treatment duration. The primary endpoint is relative geometric mean change in plasma tHcy levels from baseline compared to weeks 6 through 12. Durability of treatment response through 24 weeks of treatment will also be measured as a secondary endpoint. Topline results from the HARMONY Study are expected in 2026.
- The Company will also be initiating the ENSEMBLE Study, a Phase 3b, open-label, long-term extension, that will evaluate the ongoing efficacy and long-term safety of pegtibatinase in participants with HCU following their completion of the COMPOSE Study or the HARMONY Study. ENSEMBLE will include an optional protein tolerance modification sub-study that will evaluate if patients can increase their natural dietary protein intake and maintain an acceptable level of metabolic control while receiving pegtibatinase.
The Company expects to announce complete full year 2023 financial results and provide a corporate update in February.
About Preliminary Financial Results
The preliminary results set forth above are unaudited, are based on management’s initial review of the Company’s results for the quarter and year ended
About FILSPARI (sparsentan)
FILSPARI (sparsentan) is a once-daily, oral medication designed to selectively target two critical pathways in the disease progression of IgAN (endothelin-1 and angiotensin II) and is the first and only non-immunosuppressive therapy approved for the treatment of this condition. FILSPARI is a prescription medicine indicated to reduce proteinuria in adults with primary IgAN at risk of rapid disease progression, generally a UPCR ≥1.5 g/g.
FILSPARI is an endothelin and angiotensin II receptor antagonist indicated to reduce proteinuria in adults with primary immunoglobulin A nephropathy (IgAN) at risk of rapid disease progression, generally a UPCR ≥1.5 g/g.
This indication is granted under accelerated approval based on reduction in proteinuria. It has not been established whether FILSPARI slows kidney function decline in patients with IgAN. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory clinical trial.
FILSPARI (sparsentan) Important Safety Information
BOXED WARNING: HEPATOTOXICITY AND EMBRYO-FETAL TOXICITY
Because of the risks of hepatotoxicity and birth defects, FILSPARI is available only through a restricted program called the FILSPARI REMS. Under the FILSPARI REMS, prescribers, patients and pharmacies must enroll in the program.
Some Endothelin Receptor Antagonists (ERAs) have caused elevations of aminotransferases, hepatotoxicity, and liver failure. In clinical studies, elevations in aminotransferases (ALT or AST) of at least 3-times the Upper Limit of Normal (ULN) have been observed in up to 2.5% of FILSPARI-treated patients, including cases confirmed with rechallenge.
Measure transaminases and bilirubin before initiating treatment and monthly for the first 12 months, and then every 3 months during treatment. Interrupt treatment and closely monitor patients who develop aminotransferase elevations more than 3x Upper Limit of Normal (ULN).
FILSPARI should generally be avoided in patients with elevated aminotransferases (>3x ULN) at baseline because monitoring for hepatotoxicity may be more difficult and these patients may be at increased risk for serious hepatotoxicity.
FILSPARI can cause major birth defects if used by pregnant patients based on animal data. Therefore, pregnancy testing is required before the initiation of treatment, during treatment and one month after discontinuation of treatment with FILSPARI. Patients who can become pregnant must use effective contraception before the initiation of treatment, during treatment, and for one month after discontinuation of treatment with FILSPARI.
Contraindications: FILSPARI is contraindicated in patients who are pregnant. Do not coadminister FILSPARI with angiotensin receptor blockers (ARBs), endothelin receptor antagonists (ERAs), or aliskiren.
Warnings and Precautions
Hepatotoxicity: Elevations in ALT or AST of at least 3-fold ULN have been observed. To reduce the risk of potential serious hepatotoxicity, measure serum aminotransferase levels and total bilirubin prior to initiation of treatment, monthly for the first 12 months, then every 3 months during treatment.
Advise patients with symptoms suggesting hepatotoxicity (nausea, vomiting, right upper quadrant pain, fatigue, anorexia, jaundice, dark urine, fever, or itching) to immediately stop treatment with FILSPARI and seek medical attention. If aminotransferase levels are abnormal at any time during treatment, interrupt FILSPARI and monitor as recommended.
Consider re-initiation of FILSPARI only when hepatic enzyme levels and bilirubin return to pretreatment values and only in patients who have not experienced clinical symptoms of hepatotoxicity.
Avoid initiation of FILSPARI in patients with elevated aminotransferases (>3x ULN) prior to drug initiation.
- Embryo-Fetal Toxicity: FILSPARI can cause fetal harm. Advise patients who can become pregnant of the potential risk to a fetus. Obtain a pregnancy test and advise patients who can become pregnant to use effective contraception prior to, during, and one month after discontinuation of FILSPARI treatment.
- FILSPARI REMS: FILSPARI is available only through a restricted program under a REMS called the FILSPARI REMS.
Important requirements include:
- Prescribers must be certified with the FILSPARI REMS by enrolling and completing training.
- All patients must enroll in the FILSPARI REMS prior to initiating treatment and comply with monitoring requirements.
- Pharmacies that dispense FILSPARI must be certified with the FILSPARI REMS and must dispense only to patients who are authorized to receive FILSPARI.
Further information is available at www.filsparirems.com or 1-833-513-1325.
Please see Full Prescribing Information for FILSPARI here
This press release contains “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995. Without limiting the foregoing, these statements are often identified by the words “on-track”, “positioned”, “look forward to”, “will,” “would,” “may”, “might”, “believes”, “anticipates”, “plans”, “expects”, “intends,” “potential” or similar expressions. In addition, expressions of our strategies, intentions or plans are also forward-looking statements. Such forward-looking statements include, but are not limited to, references to: continued progress with the FILSPARI launch and preliminary estimates of metrics related thereto; the planned submission of an sNDA for full approval of FILSPARI and the anticipated timing and outcome thereof; statements regarding the potential approval of sparsentan for the treatment of IgAN in
Source: Travere Therapeutics, Inc.