Nirogacestat in Premenopausal Females With Desmoid Tumor/Aggressive Fibromatosis (DT/AF)
A Single-Arm, Open-Label Phase 4 Study of Nirogacestat in Adult Premenopausal Females With Desmoid Tumors/Aggressive Fibromatosis (DT/AF)
2 other identifiers
interventional
50
6 countries
23
Brief Summary
This study is being conducted to study how nirogacestat may affect the ovarian function of adult premenopausal women with progressing desmoid tumors/aggressive fibromatosis.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for phase_4
Started Sep 2025
Longer than P75 for phase_4
23 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
July 31, 2025
CompletedFirst Posted
Study publicly available on registry
September 16, 2025
CompletedStudy Start
First participant enrolled
September 17, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 14, 2031
ExpectedStudy Completion
Last participant's last visit for all outcomes
January 14, 2031
July 17, 2026
July 1, 2026
5.3 years
July 31, 2025
July 15, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Ovarian function recovery rate of ovarian toxicity (OT) treatment-emergent adverse events (TEAEs)
Ovarian function recovery is defined as achieving the resumption of ≥2 consecutive menstrual periods and an FSH level \<30 mIU/mL with concomitant estradiol \<80 pg/mL OR resumption of ≥2 consecutive menstrual periods and AMH level within normal range adjusted for age and pretreatment baseline OR a positive serum β-HCG pregnancy test.
Up to 24 cycles (each cycle is 28 days) of treatment and up to 2 years in the Clinical Follow-up Period
Secondary Outcomes (3)
Incidence of OT TEAEs
Up to 24 cycles (each cycle is 28 days) of treatment and up to 2 years in the Clinical Follow-up Period
Time to ovarian function recovery in participants with a TEAE of OT
Up to 24 cycles (each cycle is 28 days) of treatment and up to 2 years in the Clinical Follow-up Period
The incidence of adverse events (AEs) according to toxicities graded by National Cancer Institute (NCI) Common Technology Criteria for Adverse Events (CTCAE) Version 5
Up to 24 cycles (each cycle is 28 days) of treatment and up to 2 years in the Clinical Follow-up Period
Other Outcomes (10)
Objective Response Rate (ORR)
First day of every 3 cycles (each cycle is 28 days) for up to 24 cycles of treatment and up to 1 year in the Clinical Follow-up Period
Duration of Response (DoR) for participants whose best response is CR or PR
First day of every 3 cycles (each cycle is 28 days) until disease progression is observed or death, whichever comes first, up to 24 cycles of treatment and up to 1 year in the Clinical Follow-up Period
Disease Control Rate (DCR) for participants whose best response is CR, PR or Stable Disease (SD)
First day of every 3 cycles (each cycle is 28 days) for up to 24 cycles of treatment and up to 1 year in the Clinical Follow-up Period
- +7 more other outcomes
Study Arms (1)
Nirogacestat
EXPERIMENTALNirogacestat 150 mg by mouth, twice daily
Interventions
Eligibility Criteria
You may qualify if:
- Participant is female, postpubertal aged ≥18 and ≤40 years of age at the time of signing the informed consent and premenopausal at baseline. Premenopausal is defined as meeting all of the following: Estradiol \>30 pg/mL. Follicle-stimulating hormone (FSH) \<40 IU/L. Regular menses (e.g., menstrual cycle length of 21 to 35 days) for at least 3 menstrual cycles prior to signing informed consent
- Participant uses 1 highly effective non-hormonal contraceptive method, has a negative pregnancy test prior to first dose of study treatment), is not breastfeeding, agrees to not harvest or donate eggs for at least 90 days prior to and during the study
- Participant has histologically confirmed DT/AF with symptomatic or progressive disease requiring systemic treatment
- Participant has an Eastern Cooperative Oncology Group (ECOG) performance status ≤2 at screening
- Participant has adequate organ and bone marrow function.
You may not qualify if:
- Participant has known malabsorption syndrome or preexisting gastrointestinal conditions that may impair absorption of nirogacestat
- Participant has experienced any of the following within 6 months of signing informed consent: clinically significant cardiac disease (New York Heart Association Class III or IV), myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident, transient ischemic attack, or symptomatic pulmonary embolism.
- Participant has had lymphoma, leukemia, or any malignancy within the past 5 years at the time of informed consent, except for any locally recurring cancer that has been treated curatively (e.g., resected basal or squamous cell skin cancer, superficial bladder cancer, carcinoma in situ of the cervix or breast), with no evidence of metastatic disease for 3 years at the time of informed consent.
- Participant has known hepatic impairment
- Participant previously received or is currently receiving gamma secretase inhibitors or anti-Notch antibody therapy
- Participant is currently using any treatment for DT/AF including tyrosine kinase inhibitors (TKIs) or any investigational treatment 28 days (or 5 half-lives, whichever is longer) prior to the first dose of study treatment
- Participant is currently using or anticipates using food or drugs that are known strong/moderate cytochrome P450 (CYP) 3A4 inhibitors, or strong CYP3A inducers within 14 days prior to the first dose of study treatment.
- Participant has a history of polycystic ovary syndrome, hypothalamic amenorrhea, severe endometriosis involving ovaries, family history of primary ovarian insufficiency, any chromosomal abnormality, mutation, gene variant or medical condition associated with early/premature menopause, including a history of OT while on a TKI
- Participant is currently using or has used hormonal contraception or ovarian suppression within 90 days prior to first dose of study treatment
- Participant has a history of heavy tobacco smoking (≥20 pack years) or is a current smoker (\>1 pack per day)
- Participant has experienced other severe acute or chronic medical or psychiatric conditions within 1 year of signing informed consent.
- Participant is unable to comply with study related procedures (including, but not limited to, the completion of a menstrual diary and electronic patient-reported outcomes and ability to return to clinic for hormone level blood draws timed to the menstrual cycle (days 1-5)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (23)
Cliniques Universitaires Saint-Luc (CUSL)
Brussels, 1200, Belgium
Universitaetsmedizin Mannheim
Mannheim, 68167, Germany
IRCCS Istituto Romagnolo per lo Studio dei Tumori "Dino Amadori" - IRST S.r.l.
Meldola, Forli-Cesena, 47014, Italy
La Fondazione e l'Istituto di Candiolo
Candiolo, Torino, 10060, Italy
IRCCS Azienda Ospedaliero-Universitaria di Bologna - Policlinico di Sant Orsola
Bologna, 40138, Italy
IRCCS Istituto Ortopedico Rizzoli di Bologna
Bologna, 40138, Italy
Fondazione IRCCS Istituto Nazionale dei Tumori Milano
Milan, 20133, Italy
Istituto Nazionale Tumori I.R.C.C.S- Fondazione G. Pascale
Naples, 80131, Italy
Policlinico Universitario Campus Bio-Medico
Roma, 00128, Italy
Nederlands Kanker Instituut - Antoni van Leeuwenhoek Ziekenhuis (NKI-AVL)
Amsterdam, 1066 CX, Netherlands
Academisch Ziekenhuis Leiden
Leiden, 2333 ZA, Netherlands
Hospital de la Santa Creu i Sant Pau
Barcelona, 08041, Spain
Institut Catala d'Oncologia
Barcelona, 08907, Spain
Hospital General Universitario Gregorio Maranon
Madrid, 28007, Spain
Hospital Fundacion Jimenez Diaz
Madrid, 28040, Spain
Hospital Universitario 12 de Octubre
Madrid, 28041, Spain
Hospital Universitario La Paz
Madrid, 28046, Spain
Hospital Universitari i Politecnic La Fe de Valencia
Valencia, 46026, Spain
Hospital Universitario Miguel Servet
Zaragoza, 50009, Spain
Cambridge University - Addenbrooke's Hospital
Cambridge, CB2 0QQ, United Kingdom
University College London Hospital
London, NW1 2PG, United Kingdom
The Royal Marsden NHS Foundation Trust
London, SW3 6JJ, United Kingdom
The Christie NHS Foundation Trust
Manchester, M20 4BX, United Kingdom
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Medical Responsible
SpringWorks Therapeutics, Inc., a healthcare company of Merck KGaA, Darmstadt, Germany
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
July 31, 2025
First Posted
September 16, 2025
Study Start
September 17, 2025
Primary Completion (Estimated)
January 14, 2031
Study Completion (Estimated)
January 14, 2031
Last Updated
July 17, 2026
Record last verified: 2026-07
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, SAP, CSR, ANALYTIC CODE
- Time Frame
- IPD from completed trials will be publicly available within 6 months after all of the following events: * Approval of a product/new indication by major authorities (FDA, EMA, PMDA if requested) with no pending submissions * Public results via primary manuscript or trial registry disclosure * Legal authority to share data * Privacy protections are in place If approval is not sought or development is globally discontinued, data will be publicly available within 18 months after global trial completion. Further information on how to request data can be found on our website bit.ly/IPD21
- Access Criteria
- Qualified researchers may propose access to IPD from sponsored trials via https://vivli.org/members/ourmembers/
IPD supporting publicly available results will be evaluated for sharing.