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Foresee Pharmaceuticals announces the Casppian Phase 3 Study Meets Primary Efficacy Endpoint, Demonstrating Robust LH Suppression with 6-Month Dosing Interval of leuprolide mesylate

Foresee Pharmaceuticals (TPEx: 6576), ("Foresee") today announced positive topline results from its Phase 3 Casppian clinical trial evaluating the efficacy and safety of FP-001 42 mg (leuprolide mesylate), an investigational, sustained-release GnRH agonist, administered every six months in children with Central Precocious Puberty (CPP).

articleForesee Pharmaceuticals Co., Ltd.December 24, 20254/company/foresee-pharmaceuticals-co-ltd/news/foresee-pharmaceuticals-announces-the-casppian-phase-3-study-meets-primary-efficacy-endpoint-demonstrating-robust-lh-suppression-with-6-month-dosing-interval-of-leuprolide-mesylate
Foresee Pharmaceuticals announces the Casppian Phase 3 Study Meets Primary Efficacy Endpoint, Demonstrating Robust LH Suppression with 6-Month Dosing Interval of leuprolide mesylate

About this update from Foresee Pharmaceuticals Co., Ltd.

[{"type":"list","items":[{"val":[{"type":"text","content":"The proportion of patients with serum luteinizing hormone (LH) suppression to < 4 mIU/mL at 60 minutes following a GnRHa stimulation test at Week 24 was 94%, and the results were statistically significant (P-value = 0.0005), which exceeded the pre-specified success criterion.","length":279,"tagName":"p"}]},{"val":[{"type":"text","content":"Leuprolide mesylate 42mg injection (FP-001) was well tolerated in patients with Central Precocious Puberty (CPP)","length":112,"tagName":"p"}]}],"tagName":"ul","bulletedList":true,"length":391,"olType":false},{"type":"text","content":"TAIPEI, Dec. 24, 2025 /PRNewswire/ -- Foresee Pharmaceuticals (TPEx: 6576), ("Foresee") today announced positive topline results from its Phase 3 Casppian clinical trial evaluating the efficacy and safety of FP-001 42 mg (leuprolide mesylate), an investigational, sustained-release GnRH agonist, administered every six months in children with Central Precocious Puberty (CPP).","length":386,"tagName":"p"},{"type":"text","content":"The study's primary endpoint was defined as the percentage of patients with serum LH concentrations < 4 mIU/mL at 60 minutes following an abbreviated GnRHa stimulation test at Visit 5 (Week 24). The study successfully met its primary efficacy endpoint, with statistically significant results (P-value = 0.0005), demonstrating that 94% of patients had serum luteinizing hormone (LH) suppression to < 4 mIU/mL at 60 minutes following a GnRHa stimulation test at Week 24, and exceeded the pre-specified success criterion.","length":528,"tagName":"p"},{"type":"text","content":"FP-001 42 mg injection was well tolerated and considered effective for the treatment of CPP if ≥80% of patients exhibited this level of LH suppression. The study results convincingly achieved this threshold.","length":207,"tagName":"p"},{"type":"text","content":""We are incredibly encouraged by these pivotal results, which confirm the ability of a single injection of FP-001 42 mg (GnRHa) to provide effective and sustained suppression of the pituitary-gonadal axis for a full six months. Meeting this rigorous primary endpoint with such a high threshold of 94% is a significant milestone. It underscores the potential of FP-001 to offer a meaningful new treatment option, potentially improving convenience and adherence...

More updates from Foresee Pharmaceuticals Co., Ltd.

Central Precocious PubertyCPPGnRHa60 minutestopline resultsprimary endpointsuppressionluteinizing hormonePhase 3 trialForesee