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REC-4881

Phase 1

Familial Adenomatous Polyposis | Small molecule | Other |Recursion Pharmaceuticals, Inc.|Last Updated: Jun 5, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
PLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment67
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05552755Evaluate REC-4881 in Participants With Familial Adenomatous Polyposis (FAP)PHASE1 RECRUITING 67Jul 10, 2023Sep 1, 2027Jun 5, 202617 United States
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Study Endpoints
Primary Endpoints
Part 1: Maximum (Peak) Plasma Drug Concentration (Cmax) of REC-4881
Day 1 through Day 43
Part 1: Time to Reach Cmax (Tmax) of REC-4881
Day 1 through Day 43
Part 1: Area Under the Plasma Concentration-time Curve (AUC) of REC-4881
Day 1 through Day 43
Part 2: Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Day 1 through up to Week 37
Part 2: Number of Participants With Dose-limiting Toxicities (DLTs)
First 28 days of treatment
Part 2: Number of Participants Who Discontinued Treatment
Day 1 through up to Week 37
Part 2: Number of Participants With Dose Modification Due to Toxicity
Day 1 through up to Week 37
Part 2: Percent Change From Baseline in Polyp Burden
Baseline, up to Week 37
Secondary Endpoints
Part 1: Number of Participants With TEAEs and SAEs
Day 1 through Day 29
Part 1: Number of Participants Who Discontinued Treatment
Day 1 through Day 29
Part 1: Number of Participants With Dose Modification Due to Toxicity
Day 1 through Day 29
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Placebo (Part 1)PLACEBO_COMPARATORParticipants will receive a single dose of placebo administered orally and then, following 14-28 days, participants will begin once daily (QD) dosing for another 14 days.
REC-4881 4 mg (Part 1)EXPERIMENTALParticipants will receive REC-4881 4 milligrams (mg) administered orally and then, following 14-28 days, participants will begin QD dosing for another 14 days.
REC-4881 4 mg (Part 2): QD Treatment RegimenEXPERIMENTALParticipants will receive REC-4881 4 mg administered orally QD for 12 weeks followed by a 12 week off-treatment period.
REC-4881 8 mg (Part 2): QD Treatment RegimenEXPERIMENTALParticipants will receive REC-4881 8 mg administered orally QD for 12 weeks followed by a 12 week off-treatment period.
REC-4881 4 mg (Part 2): Interval Dosing Treatment RegimenEXPERIMENTALParticipants will receive REC-4881 4 mg administered orally in a 7 day on and off schedule for 24 weeks.
Interventions
NameTypeDescription
REC-4881DRUGREC-4881 capsules
PlaceboDRUGPlacebo capsules
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites17

Inclusion Criteria: 1. Male or female and ≥ 18 years of age 2. Have provided written informed consent to participate in the study 3. Diagnosis of phenotypic classical FAP with disease involvement of the duodenum or the residual colon/rectum/pouch as the primary disease site. 4. Genetic diagnosis of...

Countries:United States
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Recent Changes (Last 90 Days)
LOWJun 5, 2026NCT05552755lastUpdatePostDate: changed
LOWJun 5, 2026NCT05552755lastUpdatePostDate: changed
LOWJun 5, 2026NCT05552755lastUpdatePostDate: changed
LOWJun 5, 2026NCT05552755lastUpdatePostDate: changed
MEDIUMMay 26, 2026NCT05552755primaryCompletionDate: changed
LOWMay 24, 2026NCT05552755studyFirstPostDate: changed