On January 9, 2025 Servier reported updates to two of its Phase 3 programs evaluating TIBSOVO (ivosidenib tablets) in isocitrate dehydrogenase 1 (IDH1)-mutated cancers (Press release, Servier, JAN 9, 2025, View Source [SID1234649554]). The first patient has been enrolled in the CHONQUER study, a pivotal Phase 3 clinical trial evaluating the efficacy and safety of TIBSOVO versus placebo in patients with IDH1-mutated conventional chondrosarcoma. In addition, the Phase 3 PyramIDH clinical trial has been initiated, and sites are actively recruiting across the globe. The PyramIDH study is evaluating TIBSOVO (ivosidenib tablets) monotherapy and azacitidine monotherapy in the treatment of patients with IDH1-mutated myelodysplastic syndromes (MDS) who have not previously been treated with a hypomethylating agent.
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"As the leader in IDH-mutated cancers, Servier aspires to provide new treatment options for those impacted by newly diagnosed IDH1-mutated conventional chondrosarcoma and IDH-1 mutated MDS. The advancement of two of our Phase 3 registration enabling studies is an incredibly important milestone for our TIBSOVO clinical development program and underscores our commitment to understanding the application of IDH1m inhibition in a broad range of malignancies to meet the needs of patients," said Susan Pandya, MD, Vice President, Clinical Development and Global Head of Oncology LS/LCM, Servier Pharmaceuticals. "We are deeply grateful to the patients, families and healthcare providers who are participating in this important research."
The use of TIBSOVO in patients with IDH1-mutated conventional chondrosarcoma, as well as, patients with IDH1-mutated myelodysplastic syndromes who have not previously been treated with a hypomethylating agent are investigational, and its safety and efficacy in these cases have not been evaluated by any regulatory authority.
About the PyramIDH Trial (NCT06465953)
PyramIDH is a pivotal Phase 3, multicenter, open label, randomized clinical trial of TIBSOVO (ivosidenib tablets) monotherapy and azacitidine monotherapy in adult patients with myelodysplastic syndromes (MDS) with an isocitrate dehydrogenase protein, 1 (IDH1) mutation, who have not received treatment with a hypomethylating agent previously. The primary endpoint of PyramIDH is complete remission (CR) or partial remission (PR) as per International Working Group (IWG) 2006 criteria at 4 months. Secondary outcome measures include overall response (OR) rate, event-free survival (EFS) and overall survival (OS).
About the CHONQUER Trial (NCT06127407)
CHONQUER is a pivotal Phase 3, multicenter, double-blind, randomized, placebo-controlled crossover clinical trial of TIBSOVO (ivosidenib tablets) in adult patients with locally advanced or metastatic conventional chondrosarcoma with an isocitrate dehydrogenase protein, 1 (IDH1) mutation who are untreated or were previously treated with one systemic treatment regimen in the advanced/metastatic setting for conventional chondrosarcoma. The primary endpoint of CHONQUER is progression-free survival (PFS) in Grades 1 and 2 participants. Key secondary outcome measures include endpoints such as PFS in all randomized participants, overall survival (OS) in Grades 1 and 2 participants, and OS in all randomized participants. The study also will evaluate the impact of TIBSOVO on health-related quality of life (HRQoL) and health economic outcomes.
About TIBSOVO (ivosidenib tablets)
TIBSOVO is a precision medicine that targets a specific type of mutation known as isocitrate dehydrogenase 1 (IDH1). TIBSOVO is approved in five indications globally, including approvals in the U.S., European Union, Australia and China.
In the U.S., TIBSOVO is approved for the treatment of adults with IDH1-mutant relapsed or refractory AML and in monotherapy or in combination with azacitidine for adults with newly diagnosed IDH1-mutant AML who are ≥75 years old or who have comorbidities that preclude the use of intensive induction chemotherapy, as monotherapy for the treatment of adult patients with IDH1-mutant relapsed or refractory MDS, and for patients with previously treated IDH1-mutated cholangiocarcinoma.
For more information about TIBSOVO in the U.S., please visit www.tibsovo.com.
About Myelodysplastic Syndromes
Myelodysplastic Syndromes (MDS) are disorders in which progenitor (stem) cells do not mature into healthy blood cells.1 In the U.S., approximately 16,000 new cases of MDS are reported each year.2 Approximately 3.6% of MDS patients have an IDH1 mutation,3 which is considered an early "driver" mutation.4 For MDS patients with an IDH1 mutation, the prognosis has often been associated with worse overall outcomes and in an increased risk of transformation to AML.3 Prior to the approval of TIBSOVO, there were no approved targeted therapies for this molecularly defined subset.
About Chondrosarcoma
Chondrosarcoma is a group of bone tumors that are made up of cells that make too much cartilage.1 Chondrosarcoma, the second most common sarcoma of the bones following osteosarcoma,5 accounts for 20-30% of all skeletal sarcomas and has an estimated incidence of 1 in 200,000 per year in the U.S.6 Conventional primary chondrosarcoma is the most common variant and makes up 85% of all cases.2 IDH mutations are found in 50-70% of chondrosarcomas.7 Surgery currently remains the mainstay of treatment for conventional chondrosarcoma as both radiation and chemotherapy have been shown to be ineffective.