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Nirogacestat

Phase 3

Desmoid Tumor | Small molecule | Oncology |SpringWorks Therapeutics, Inc.|Last Updated: Jun 29, 2026

Target and mechanism

Molecular targetAPH1A, PSENEN, APH1B, PSEN1, NCSTN, PSEN2
Target classInhibitor
ModalitySmall molecule

Also known as Nirogacestat oral tablet

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment190

FDA Designations

PRIORITY_REVIEWFAST_TRACKORPHAN_DRUGBREAKTHROUGH_THERAPY

Clinical trial landscape

Nirogacestat · 7 trials · 7 indications

Phase 3 1Phase 2 4Phase 1 2
NCT03785964Nirogacestat for Adults With Desmoid Tumor/Aggressive Fibromatosis (DT/AF)Desmoid Tumor
COMPLETED142 Analytics
PHASE3COMPLETED
Nirogacestat for Adults With Desmoid Tumor/Aggressive Fibromatosis (DT/AF)
Desmoid TumorUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression Free Survival (PFS) Defined as the Time From Randomization Until Date of Assessment of Progression or Death by Any Cause.
On the first day of every 3 cycles (each cycle is 28 days) until disease progression is observed or death, whichever comes first, assessed up to approximately 2 years

Progression will be determined radiographically using RECIST v1.1 (Eisenhauer, 2009) or clinically as assessed by the investigator. Clinical progression is defined as the onset or worsening of symptoms resulting in a global deterioration of health status causing the permanent discontinuation from study treatment and the initiation of emergent treatment (e.g., radiotherapy, surgery, or systemic therapy including chemotherapy or tyrosine kinase inhibitors) for DT/AF. Events of clinical progression will be adjudicated by an independent blinded central Endpoint Adjudication Committee (EAC) which will qualify events of clinical progression for inclusion in the PFS endpoint prior to study unblinding according to an EAC Review Charter.

Objective response rate (ORR)
On the first day of every 3 cycles (each cycle is 28 days) until disease progression is observed or death, assessed up to approximately 3 years.

Objective response rate (ORR), defined as the proportion of participants with confirmed complete response (CR) + partial response (PR) assessed by independent Central Imaging Review using RECIST v1.1 (Eisenhauer 2009).

Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0
through study completion; an average of 1 year.
Clinical Benefit per RECIST v1.1
1 year

Clinical benefit (CB) is defined as the number of participants assessed with a complete response (CR), partial response (PR), or stable disease (SD) within 1 year and with no evidence of loss of response nor progression within that year. Response \& progression will be assessed according to the Revised Response Evaluation Criteria in Solid Tumors (RECIST)v1.1, as follows: RECIST v1.1: * CR=Disappearance of all lesions * PR=≥30% decrease in diameter of target lesions * Progressive disease (PD)=20% increase in diameter of target lesion; progression of non-target lesion; or ≥1 new lesion(s) For the overall outcome: * SD=Changes not meeting above criteria * Overall Response (OR)=CR+PR * CB=CR+PR+SD

Plasma area under the concentration-time curve from dosing extrapolated to infinity (AUCinf) and maximum observed plasma concentration (Cmax) for the CYP cocktail probes alone, and coadministered with nirogacestat.
CYP cocktail - Day -3 and Day 15 at predose (-60 minutes) and at 0.5, 1, 2, 3, 4, 6, 8, (10% nominal), 12, 24, 48, and 72 hours and nirogacestat Days 1 through 17 predose trough samples should be obtained within 1 hour of the nominal time from dosing.

Area under the concentration-time curve from dosing extrapolated to infinity. AUCinf = (AUClast + Clast/Kel) where Clast is the plasma concentration at the last quantifiable timepoint estimated from the log-linear regression analysis and Kel is the terminal elimination phase rate constant estimated by linear regression based on observations justified to describe the terminal phase on the log-linear concentration-time profile.

Maximum Observed Plasma Concentration (Cmax) of the CYP cocktail probes alone, and coadministered with nirogacestat.
CYP cocktail - Day -3 and Day 15 at predose (-60 minutes) and at 0.5, 1, 2, 3, 4, 6, 8, (10% nominal), 12, 24, 48, and 72 hours and nirogacestat Days 1 through 17 predose trough samples should be obtained within 1 hour of the nominal time from dosing.

Maximum observed plasma concentration. Observed directly from the data.

Area under the concentration-time curve from time zero to infinity of nirogacestat.
Serial blood samples will be collected to determine concentrations of nirogacestat (in serum) on Day 1, Day 6, and Day 17 predose (-30 minutes) and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours postdose

Serum AUCinf of nirogacestat.

Maximum serum concentration (Cmax) of nirogacestat.
Serial blood samples will be collected to determine concentrations of nirogacestat (in serum) on Day 1, Day 6, and Day 17 predose (-30 minutes) and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours postdose

Serum Cmax of nirogacestat.

Effect of a single 2-hour staggered dose of famotidine on the PK AUCinf of nirogacestat
Serial blood samples will be collected to determine concentrations of nirogacestat (in serum) on Day 1, Day 6, and Day 17 predose (-30 minutes) and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours postdose

Serum AUCinf of nirogacestat.

Effect of a single 2-hour staggered dose of famotidine on the PK Cmax of nirogacestat
Serial blood samples will be collected to determine concentrations of nirogacestat (in serum) on Day 1, Day 6, and Day 17 predose (-30 minutes) and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours postdose

Serum Cmax of nirogacestat.

Secondary Endpoints

Objective Response Rate Using RECIST Version 1.1 Criteria.
On the first day of every 3 cycles (each cycle is 28 days) through study completion, an average of 2 years
Change From Baseline at Cycle 10 in the Brief Pain Inventory (BPI) Average Pain Intensity (API) Score.
Daily for the last 7 days of every cycle (each cycle is 28 days) through study completion, an average of 2 years
Change From Baseline at Cycle 10 in the GOunder/Desmoid Tumor Research Tumor Foundation (DTRF) DEsmoid Tumor Symptom Scale (DTSS) - Total Score
Daily for the last 7 days of every cycle (each cycle is 28 days) through study completion, an average of 2 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Double-Blind Phase - NirogacestatEXPERIMENTALNirogacestat 150 mg by mouth, twice daily
Double-Blind Phase - PlaceboPLACEBO_COMPARATORPlacebo by mouth, twice daily
Open-Label Phase - NirogacestatEXPERIMENTALNirogacestat 150 mg by mouth, twice daily
NirogacestatEXPERIMENTALNirogacestat 150 mg by mouth, twice daily
Nirogacestat 150 mgEXPERIMENTALPatients will receive 3-cycle lead-in with systemic therapy with nirogacestat 150 mg po BID, given continuously.
Nirogacestat Open-LabelEXPERIMENTALNirogacestat 150 mg by mouth, twice daily Nirogacestat oral tablet: Nirogacestat tablet
Nirogacestat and CYP cocktailEXPERIMENTALNirogacestat 100 mg BID will be administered orally from Day 1 through Day 17 and an oral dose of CYP cocktail (CYP2B6 \[bupropion 20 mg\], CYP2C8 \[repaglinide 0.05 mg\], CYP2C9 \[flurbiprofen 10 mg\], CYP2C19 \[omeprazole 10 mg\], and CYP3A4 \[midazolam 1 mg\]) will be administered on Day -3, and again on Day 15.
Period 1 - Nirogacestat Dose (Reference)ACTIVE_COMPARATORNirogacestat will be administered, after at least a 10-hour fast, in the morning on Day 1, Day 6, and Day 17
Period 2 - Nirogacestat and Famotidine (Test)ACTIVE_COMPARATORFamotidine will be administered as an oral tablet 2 hours after the administration of nirogacestat on Day 6.
Period 3 Nirogacestat and Rabeprazole (Test)ACTIVE_COMPARATORRabeprazole will be administered as an oral tablet in the evenings on Day 10 through Day 16.

Interventions

NameTypeDescription
Nirogacestat oral tabletDRUGNirogacestat tablet
Placebo Oral TabletDRUGSugar pill manufactured to mimic nirogacestat 50 mg tablet
NirogacestatDRUGGiven by PO
CryoablationPROCEDURECryoablation procedure (single session) of one tumor mass between Cycles 3 and 4 of nirogacestat treatment
Nirogacestat and Cocktail of CYP Specific Probe SubstratesDRUGDrug: Nirogacestat 100 mg tablet Day 1 through Day 17 and Drug: Cocktail of CYP Specific Probe Substrates administered Day 15.
Nirogacestat and FamotidineDRUGoral dose of 150 mg nirogacestat \& oral dose of 40 mg famotidine
Nirogacestat and RabeprazoleDRUGoral dose of 150 mg nirogacestat and oral dose of 20 mg rabeprazole
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites52

Double-Blind Key Inclusion Criteria: * Participant has histologically confirmed DT/AF (by local pathologist prior to informed consent) that has progressed by ≥ 20% as measured by RECIST v1.1 within 12 months of the screening visit scan. * Participant has: 1. Treatment naïve, measurably progressi...

Countries:United StatesBelgiumCanadaGermanyItalyNetherlandsUnited KingdomJapanPoland
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Recent Changes (Last 90 Days)

LOWJun 29, 2026NCT07170644primaryCompletionDate: changed
LOWJun 29, 2026NCT07170644primaryCompletionDate: changed
MEDIUMJun 8, 2026NCT07171619TRIAL_REMOVED: changed
MEDIUMJun 8, 2026NCT07171619TRIAL_REMOVED: changed
MEDIUMJun 8, 2026NCT07171619TRIAL_REMOVED: changed
MEDIUMJun 8, 2026NCT07171619TRIAL_REMOVED: changed
MEDIUMJun 8, 2026NCT07171619TRIAL_REMOVED: changed
MEDIUMJun 1, 2026NCT07259330TRIAL_REMOVED: changed
MEDIUMJun 1, 2026NCT07259330TRIAL_REMOVED: changed
MEDIUMJun 1, 2026NCT07259330TRIAL_REMOVED: changed
LOWMay 26, 2026NCT05879146primaryCompletionDate: changed
LOWMay 26, 2026NCT05949099primaryCompletionDate: changed
LOWMay 26, 2026NCT07170644primaryCompletionDate: changed
LOWMay 24, 2026NCT05949099studyFirstPostDate: changed
LOWMay 24, 2026NCT05879146studyFirstPostDate: changed
LOWMay 24, 2026NCT07170644studyFirstPostDate: changed

Frequently asked questions about Nirogacestat

What is Nirogacestat used for?

Nirogacestat is an investigational small molecule being developed for desmoid tumors, also known as aggressive fibromatosis. It is also being studied in ovarian granulosa-stromal tumors and in healthy volunteers. The drug is currently in Phase 3 clinical development for desmoid tumors.

What does Nirogacestat target?

Nirogacestat is a gamma-secretase inhibitor that targets multiple components of the gamma-secretase complex, including APH1A, PSENEN, APH1B, PSEN1, NCSTN, and PSEN2. By inhibiting this enzyme complex, the drug aims to block Notch signaling, which is implicated in desmoid tumor growth.

Who makes Nirogacestat?

Nirogacestat is being developed by SpringWorks Therapeutics, Inc., a biopharmaceutical company traded on NASDAQ under the ticker symbol SWTX. The company is conducting clinical trials of the drug in desmoid tumors and other conditions.

What phase is Nirogacestat in?

Nirogacestat is in Phase 3 clinical development for desmoid tumors. It has received several FDA designations, including Priority Review, Fast Track, Orphan Drug, and Breakthrough Therapy. The drug is investigational and has not been approved by the FDA.

What clinical trials is Nirogacestat in?

Nirogacestat has been studied in several clinical trials. NCT03785964 is a completed Phase 3 trial in desmoid tumors with 142 participants. NCT05879146 is a recruiting Phase 2 trial in tumors, NCT05949099 is a recruiting Phase 2 trial combining cryoablation, and NCT07170644 is an active Phase 2 trial in Japanese adults with desmoid tumors.

Is Nirogacestat the same as Nirogacestat oral tablet?

Yes, Nirogacestat oral tablet is the formulation of the drug being developed by SpringWorks Therapeutics. The oral tablet is the form used in clinical trials for desmoid tumors and other conditions. The drug is also known by its chemical name, nirogacestat.