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eRapa

Phase 3

Familial Adenomatous Polyposis | Small molecule | Gastrointestinal |Biodexa Pharmaceuticals plc|Trials Updated: Mar 17, 2026

eRapa target and mechanism

ModalitySmall molecule

Also known as Encapsulated Rapamycin (eRapa), Encapsulated Rapamycin, eRapa (encapsulated rapamycin)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials2
Total Enrollment198

FDA Designations

FAST_TRACKORPHAN_DRUG

eRapa clinical trials

eRapa · 2 trials · 2 indications

Phase 3 1Phase 2 1
NCT06950385Phase 3 Trial of eRapa in Patients With Familial Adenomatous PolyposisFamilial Adenomatous Polyposis (FAP)
RECRUITING168 Analytics
PHASE3RECRUITING
Phase 3 Trial of eRapa in Patients With Familial Adenomatous Polyposis
Familial Adenomatous Polyposis (FAP)Unlock trial analytics

Study Endpoints

Primary Endpoints

Progression-free survival (PFS) in high-risk patients with FAP treated with eRapa versus placebo.
3 years

* Death from any cause * Cancer/high-grade dysplasia * Major FAP-related surgery (e.g., colectomy, proctectomy, total proctocolectomy with ileal pouch anal anastomosis \[IPAA\], pouch resection, ileostomy, duodenectomy, or surgical ampullectomy) * Advancement of Spigelman stage (not related solely to increase in polyp number) * Meets criteria for surgery (consistent with United States \[US\] and European Union \[EU\] practice guidelines) (Yang, Gurudu et al. 2020, Zaffaroni, Mannucci et al.2024) * Retained rectum/sigmoid or pouch (≥10 polyps ≥3 mm in size at baseline) * Duodenum (Stage 3/4 and at least 1 polyp ≥10 mm removed in last 18 months)

Frequency and severity of adverse events associated with low dose eRapa in FAP patients
All adverse events with start dates occurring any time after informed consent is obtained until 7 days (for non-serious adverse events) or 30 days (for serious adverse events) after the last day of study participation will be recorded.

Safety and tolerability of eRapa as determined by graded toxicity assessed throughout the trial per CTCAE v5.0.

Determine the Recommended Phase 2 Dose (RP2D)
After informed consent is obtained up to 30 days after the last day of study participation.

The Recommended Phase 2 Dose (RP2D) will be determined by examining and analyzing safety/ adverse events as reflected by Outcome 1, dose delays, dose reductions, withdrawal of treatment secondary to low-grade toxicities, and serum pharmacokinetic monitoring.

Efficacy of eRapa in delaying polyp progression in patients with FAP as measured by change in polyp burden over time.
Time for each patient is baseline to 6 months.

Percentage change from baseline in colorectal polyp burden as measure by endoscopy at 6 months.

Secondary Endpoints

The safety and tolerability of eRapa in patients with FAP
3 years
The effect of eRapa treatment on GI polyposis in patients with FAP
3 years
The effect of eRapa treatment on Spigelman stage score in patients with FAP
3 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
eRapaEXPERIMENTAL0.5 mg eRapa once a day (QD) every other week
PlaceboPLACEBO_COMPARATORPlacebo once a day (QD) every other week
Cohort 1EXPERIMENTALCohort 1 will receive 0.5mg of eRapa every other day.
Cohort 2EXPERIMENTALCohort 2 will receive 0.5mg of eRapa daily with 7 days on therapy, followed by 7 days off therapy.
Cohort 3EXPERIMENTALCohort 3 will receive 0.5 mg of eRapa daily.
Food EffectEXPERIMENTALUpon identification of the RP2D, after a 2 week washout (14 days), subjects will be randomized into a fed and fasted (2 weeks - 14 days) two period cross over, with an intervening 2 week washout (14 days) for a total of 2 months (8 weeks).

Interventions

NameTypeDescription
eRapa (encapsulated rapamycin)DRUG0.5 mg capsules for oral use; white opaque capsule filled with off-white powder; Trial intervention will be provided in 28-count round high-density polyethylene bottles with a polypropylene child-resistant screw cap and foil induction seal.
PlaceboDRUGCapsules in 28-count round high-density polyethylene bottles with a polypropylene child-resistant screw cap and foil induction seal.
Encapsulated Rapamycin (eRapa)DRUGeRapa is encapsulated rapamycin. The rapamycin is encapsulated in order to deliver the rapamycin at a consistent and lower dosage. eRapa is a capsule, and is administered orally.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites26

Inclusion Criteria: 1. Participant must be ≥18 years of age inclusive. 2. Participant must have documented FAP, confirmed by adenomatous polyposis coli genotype mutation testing. 3. Participant must have at least 1 of the following high-risk features: \>100 polyps but ≤500 polyps in the colon, or ≥...

Countries:United StatesDenmarkGermanyNetherlandsPuerto RicoSpain
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Frequently asked questions about eRapa

What is eRapa used for in Familial Adenomatous Polyposis?

eRapa is an investigational small molecule being developed for Familial Adenomatous Polyposis (FAP), a gastrointestinal condition. It is being studied to prevent progression of the disease in patients under active surveillance. eRapa has received Fast Track and Orphan Drug designations from the FDA for this indication.

Who is developing eRapa?

eRapa is being developed by Biodexa Pharmaceuticals plc, which trades under the ticker BDRX. The company is advancing the asset through late-stage clinical development for Familial Adenomatous Polyposis, with two active trials currently listed, including a Phase 3 study.

What phase is eRapa in?

eRapa is in Phase 3 clinical development for Familial Adenomatous Polyposis. The Phase 3 trial, NCT06950385, is currently recruiting, while an earlier Phase 2 trial, NCT04230499, is active but no longer recruiting. eRapa is investigational and has not been approved by the FDA.

What clinical trials is eRapa in?

eRapa is being evaluated in two clinical trials for Familial Adenomatous Polyposis. The Phase 3 trial NCT06950385 is recruiting 168 patients across the United States, Denmark, Germany, Netherlands, Puerto Rico, and Spain. The Phase 2 trial NCT04230499 has enrolled 30 patients in the United States and is active but not recruiting.

Is eRapa the same as Encapsulated Rapamycin?

Yes, eRapa is the same as Encapsulated Rapamycin. The drug is also referred to as eRapa (encapsulated rapamycin) and Encapsulated Rapamycin (eRapa). These names all describe the same investigational small molecule being developed by Biodexa Pharmaceuticals for Familial Adenomatous Polyposis.

What FDA designations has eRapa received?

eRapa has received Fast Track and Orphan Drug designations from the FDA for Familial Adenomatous Polyposis. These designations are intended to support and expedite the development of therapies for serious conditions and rare diseases. eRapa remains investigational and is not FDA approved.