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EXS73565

Phase 1

Relapsed or Refractory B-cell Malignancies | Small molecule | Other |Recursion Pharmaceuticals, Inc.|Last Updated: Aug 13, 2026

Target and mechanism

Molecular targetMALT1
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment85

FDA Designations

No designations recorded

Clinical trial landscape

EXS73565 · 1 trial · 7 indications

Phase 1 1
NCT06980116Dose Determining Study of EXS73565 in Participants With Relapsed or Refractory B-Cell MalignanciesRelapsed or Refractory B-cell Malignancies
RECRUITING85 Analytics
PHASE1RECRUITING
Dose Determining Study of EXS73565 in Participants With Relapsed or Refractory B-Cell Malignancies
Relapsed or Refractory B-cell MalignanciesUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants with Treatment-emergent Adverse Events (TEAEs)
Up to 282 days
Number of Participants With Dose-limiting toxicities (DLTs)
Up to 28 days

Secondary Endpoints

Time to Maximum Concentration (Tmax) of EXS73565-001
Up to 253 days
Area Under the Concentration-time Curve from Time Zero to the Time of the Last Quantifiable Concentration AUC(0-last) of EXS73565-001
Up to 253 days
Maximum Concentration (Cmax) of EXS73565-001
Up to 253 days
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
EXS73565EXPERIMENTAL -

Interventions

NameTypeDescription
EXS73565DRUGEXS73565 oral administration
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites17

Key Inclusion Criteria: * Age ≥18 years at the time of signing the informed consent. * Eastern Cooperative Oncology Group (ECOG) performance status of 0-1. * Histologically confirmed diagnosis of one of the following B-cell malignancies: chronic lymphocytic leukemia (CLL), including Richter's trans...

Countries:GeorgiaGreeceMoldovaPolandSpainUkraineUnited Kingdom
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Recent Changes (Last 90 Days)

LOWAug 14, 2026NCT06980116lastUpdatePostDate: changed
LOWAug 14, 2026NCT06980116lastUpdatePostDate: changed
LOWAug 14, 2026NCT06980116lastUpdatePostDate: changed
LOWAug 1, 2026NCT06980116Enrollment: 50 → 85
LOWAug 1, 2026NCT06980116Enrollment: 50 → 85
LOWAug 1, 2026NCT06980116Enrollment: 50 → 85

Frequently asked questions about EXS73565

What is EXS73565 used for?

EXS73565 is an investigational small molecule being developed for the treatment of relapsed or refractory B-cell malignancies, including chronic lymphocytic leukemia/small lymphocytic lymphoma, follicular lymphoma, marginal zone lymphoma, mantle cell lymphoma, diffuse large B-cell lymphoma, and Waldenstrom's macroglobulinemia.

What does EXS73565 target?

EXS73565 targets MALT1, a protein involved in B-cell signaling pathways. By inhibiting MALT1, the drug aims to disrupt survival signals in malignant B-cells, potentially leading to their death. This mechanism is being studied in patients with relapsed or refractory B-cell malignancies.

Who makes EXS73565?

EXS73565 is being developed by Recursion Pharmaceuticals, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol RXRX. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with relapsed or refractory B-cell malignancies.

What phase is EXS73565 in?

EXS73565 is currently in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The ongoing Phase 1 trial is a dose-determining study designed to evaluate the drug's safety, tolerability, and pharmacokinetics in patients with relapsed or refractory B-cell malignancies.

What clinical trials is EXS73565 in?

EXS73565 is being studied in a Phase 1 clinical trial registered as NCT06980116. This is a dose-determining study in participants with relapsed or refractory B-cell malignancies, including CLL/SLL, follicular lymphoma, marginal zone lymphoma, mantle cell lymphoma, DLBCL, and Waldenstrom's macroglobulinemia. The trial is currently recruiting participants across multiple countries in Europe.

Is EXS73565 the same as any other drug?

No alternative names for EXS73565 have been disclosed. The drug is identified solely by its code name EXS73565 in clinical trial registrations and company communications. It is a distinct investigational compound being developed by Recursion Pharmaceuticals for the treatment of relapsed or refractory B-cell malignancies.