Desmoid Tumor

This study is being conducted to study how nirogacestat may affect the ovarian function of adult premenopausal women with progressing desmoid tumors/aggressive fibromatosis.

This program is being offered on a patient by patient basis and will require company, Institutional Review Board/Independent Ethics Committee, and applicable competent authority approval.

This is an open-label, multicenter, single-arm phase 2 clinical study designed to evaluate the efficacy, safety, tolerability, patient-reported outcomes (PROs), pharmacokinetics (PK), anti-drug antibody (ADA) and pharmacodynamics (PD) of ES014 in adult desmoid tumor patients.

"Wait \& see" is currently the standard of care of recently diagnosed desmoid tumors (DT). In case of progression or symptomatic disease, medical therapy is nowadays widely used including chemotherapy. Cryoablation has proven to be beneficial for the treatment of large, progressive and symptomatic DT. This randomized phase II trial aims to compare cryoablation versus medical therapy in DT patients progressing after the "wait \& see" period. Moreover, a cross-over design has been anticipated to allow all patients to undergo cryoablation if necessary.

The primary purpose of this protocol is Systemic therapy with oral study agent, nirogacestat, followed by a single cryoablation procedure.

This is a prospective study on the safety and effectiveness of radiofrequency ablation in patients with desmoid tumors. In the study group, all patients after radiofrequency ablation of the tumor after 1 month will be evaluated using MRI and CT studies and, if solid components of the tumor are detected, repeated surgical treatment is performed followed by active monitoring after 1 month. In the absence of a solid component, the effect is estimated by the volume of the necrotic process and monitored in dynamics every 3 months.