The most common side effects include diarrhea, ovarian toxicity, rash, nausea, fatigue, stomatitis, headache, abdominal pain, cough, alopecia, upper respiratory tract infection and dyspnea.[2][3]
Nirogacestat was approved for medical use in the United States in November 2023.[2] It is the first medication approved by the US Food and Drug Administration (FDA) for the treatment of desmoid tumors.[2][5] The FDA considers it to be a first-in-class medication.[6]
Medical uses
Nirogacestat is indicated for adults with progressing desmoid tumors who require systemic treatment.[1][2]
History
The effectiveness of nirogacestat was evaluated in DeFi (NCT03785964), an international, multicenter, randomized (1:1), double-blind, placebo-controlled trial in 142 adult participants with progressing desmoid tumors not amenable to surgery.[3] Participants were randomized to receive 150 milligrams (mg) of nirogacestat or placebo orally, twice daily, until disease progression or unacceptable toxicity.[2] The main efficacy outcome measure was progression-free survival (the length of time after the start of treatment for which a person is alive and their cancer does not grow or spread).[2] Objective response rate (a measure of tumor shrinkage) was an additional efficacy outcome measure.[2] The pivotal clinical trial demonstrated that nirogacestat provided clinically meaningful and statistically significant improvement in progression-free survival compared to placebo.[2] Additionally, the objective response rate was also statistically different between the two arms with a response rate of 41% in the nirogacestat arm and 8% in the placebo arm.[2] The progression-free survival results were also supported by an assessment of patient-reported pain favoring the nirogacestat arm.[2]
As of 2021, nirogacestat was in phase II clinical trials for unresectable desmoid tumors.[7][needs update] In addition, a phase III clinical trial, DeFi, was in progress for nirogacestat for adults with desmoid tumors and aggressive fibromatosis.[8] In addition, three trials were recruiting patients that include nirogacestat with other anticancer therapies in multiple myeloma, including the UNIVERSAL study for nirogacestat with the allogeneic CAR-T therapy ALLO-715.[9][10][11]
Nirogacestat was granted breakthrough therapy designation by the FDA in September 2019, for adults with progressive, unresectable, recurrent or refractory desmoid tumors or deep fibromatosis.[12]
^Chen X, Chen X, Zhou Z, Mao Y, Wang Y, Ma Z, et al. (September 2019). "Nirogacestat suppresses RANKL-Induced osteoclast formation in vitro and attenuates LPS-Induced bone resorption in vivo". Experimental Cell Research. 382 (1): 111470. doi:10.1016/j.yexcr.2019.06.015. PMID31211955. S2CID195065514.
^Clinical trial number NCT04195399 for "A Safety, Pharmacokinetic and Efficacy Study of a y-Secretase Inhibitor, Nirogacestat (PF-03084014) in Children and Adolescents With Progressive, Surgically Unresectable Desmoid Tumors" at ClinicalTrials.gov
^Clinical trial number NCT03785964 for "A Randomized, Double-Blind, Placebo-Controlled, Phase 3 Trial of Nirogacestat Versus Placebo in Adult Patients With Progressing Desmoid Tumors/Aggressive Fibromatosis (DT/AF)" at ClinicalTrials.gov
^Clinical trial number NCT04093596 for "A Single-Arm, Open-Label, Phase 1 Study of the Safety, Efficacy, and Cellular Kinetics/Pharmacodynamics of ALLO-715 to Evaluate an Anti-BCMA Allogeneic CAR T Cell Therapy With or Without Nirogacestat in Subjects With Relapsed/Refractory Multiple Myeloma" at ClinicalTrials.gov
^Clinical trial number NCT04722146 for "A Multi-arm Phase 1b Study of Teclistamab With Other Anticancer Therapies in Participants With Multiple Myeloma" at ClinicalTrials.gov
^Clinical trial number NCT04126200 for "A Phase I/II, Randomized, Open-label Platform Study Utilizing a Master Protocol to Study Belantamab Mafodotin (GSK2857916) as Monotherapy and in Combination With Anti-Cancer Treatments in Participants With Relapsed/Refractory Multiple Myeloma (RRMM) - DREAMM 5" at ClinicalTrials.gov