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REC-1245

Phase 1

Unresectable | Small molecule | Oncology |Recursion Pharmaceuticals, Inc.|Last Updated: Aug 20, 2026

Target and mechanism

Molecular targetRBM39
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment170

FDA Designations

No designations recorded

Clinical trial landscape

REC-1245 · 1 trial · 4 indications

Phase 1 1
NCT06678659A Study of REC-1245 in Participants With Unresectable, Locally Advanced, or Metastatic CancerUnresectable
RECRUITING170 Analytics
PHASE1RECRUITING
A Study of REC-1245 in Participants With Unresectable, Locally Advanced, or Metastatic Cancer
UnresectableUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1-Part 1A (Dose Finding)- Number of Participants With Dose Limiting Toxicities (DLTs)
Initiation of study drug through 4 weeks

To characterize the incidence of DLTs

Phase 1 and 2 - Number of Participants With a Treatment-emergent Adverse Event
Initiation of study drug through 30 days after the last dose (up to approximately 24 months)

To characterize the incidence of treatment emergent adverse events

Phase 2- Objective Response Rate (ORR)
Initiation from study drug until disease progression (up to approximately 24 months)

To assess tumor response

Secondary Endpoints

Phase 1- ORR
Initiation from study drug until disease progression (up to approximately 24 months)
Phase 1 and 2- Disease Control Rate (DCR)
Initiation from study drug until disease progression as applicable (up to approximately 24 months)
Phase 1 and 2 - Duration of Response (DOR)
Initiation from study drug until disease progression as applicable (up to approximately 24 months)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1aEXPERIMENTALDose Finding
Phase 1b Cohort AEXPERIMENTAL -
Phase 1b Cohort BEXPERIMENTAL -
Phase 1b Cohort CEXPERIMENTAL -
Phase 1b Cohort DEXPERIMENTAL -
Phase 2 Cohort 1 Dose #1EXPERIMENTAL -
Phase 2 Cohort 1 Dose #2EXPERIMENTAL -
Phase 2 Cohort 2 Dose #1EXPERIMENTAL -
Phase 2 Cohort 2 Dose #2EXPERIMENTAL -

Interventions

NameTypeDescription
REC-1245DRUGOral
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Eligibility Criteria

Age Range12 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: * Have histologically-confirmed unresectable, locally advanced, or metastatic select solid tumors or select relapsed / refractory lymphoma * Have experienced progressive disease, relapsed disease, or be intolerant to at least one established standard systemic anti-cancer treatme...

Countries:United StatesCanada
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Recent Changes (Last 90 Days)

LOWAug 20, 2026NCT06678659lastUpdatePostDate: changed
LOWAug 20, 2026NCT06678659lastUpdatePostDate: changed

Frequently asked questions about REC-1245

What is REC-1245 used for?

REC-1245 is an investigational small molecule being developed for the treatment of unresectable, locally advanced, or metastatic cancers, as well as relapsed or refractory lymphomas. It is currently being studied in a Phase 1 clinical trial.

What does REC-1245 target?

REC-1245 targets RBM39, a protein involved in RNA splicing and gene regulation. By targeting RBM39, the drug aims to disrupt cancer cell survival mechanisms. This mechanism is being evaluated in the context of advanced solid tumors and lymphomas.

Who is developing REC-1245?

REC-1245 is being developed by Recursion Pharmaceuticals, Inc., a biopharmaceutical company listed on the Nasdaq under the ticker symbol RXRX. The company is conducting clinical trials for this investigational oncology drug.

What phase is REC-1245 in?

REC-1245 is in Phase 1 of clinical development. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. The ongoing Phase 1 trial is currently recruiting participants to evaluate its safety and preliminary efficacy.

What clinical trials is REC-1245 in?

REC-1245 is being studied in a Phase 1 clinical trial with the identifier NCT06678659. This trial is enrolling approximately 170 participants with unresectable, locally advanced, or metastatic cancers, as well as relapsed or refractory lymphomas, at sites in the United States and Canada.

Is REC-1245 the same as RBM39?

No, REC-1245 is not the same as RBM39. REC-1245 is the investigational drug name, while RBM39 is the molecular target of the drug. The drug is designed to interact with RBM39, but they are distinct entities.