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Surzetoclax

Phase 1

Multiple Myeloma | Small molecule | Oncology |AbbVie Inc.|Trials Updated: Sep 14, 2026

Surzetoclax development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since May 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLED
Total Trials1
Total Enrollment325

FDA Designations

No designations recorded

Surzetoclax clinical trials

Surzetoclax · 1 trial · 1 indication

Phase 1 1
NCT06953960A Study to Assess Adverse Events and Change in Disease Activity of Oral Surzetoclax Alone or in Combination With Subcutaneous and/or Oral Antimyeloma Agents in Adult Participants With Multiple Myeloma (MM)Multiple Myeloma
RECRUITING325 Analytics
PHASE1RECRUITING
A Study to Assess Adverse Events and Change in Disease Activity of Oral Surzetoclax Alone or in Combination With Subcutaneous and/or Oral Antimyeloma Agents in Adult Participants With Multiple Myeloma (MM)
Multiple MyelomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Dose-Limiting Toxicities (DLT)s of ABBV-453
Up to Approximately 45 Months

DLT events are defined as specific clinically significant adverse events or abnormal laboratory values assessed as events regardless of attribution to ABBV-453, except those clearly and incontrovertibly associated with underlying disease or extraneous causes.

Number of Participants with Adverse Events (AE)s
Up to Approximately 4.5 Years

An adverse event is defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment.

Secondary Endpoints

Overall Response Rate (ORR)
Up to Approximately 4.5 Years
Progression-Free Survival (PFS)
Up to Approximately 4.5 Years
Duration of Response (DOR)
Up to Approximately 4.5 Years
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Substudy 1: Dose Escalation Surzetoclax CombinationEXPERIMENTALParticipants will receive various doses of surzetoclax in combination with daratumumab + dexamethasone, to determine the best dose of surzetoclax, as part of the total 4.5 year study duration.
Substudy 1: Dose Optimization & Selection ABBV-453 CombinationEXPERIMENTALParticipants will receive 1 of 2 doses of ABBV-453 in combination with daratumumab + dexamethasone, as part of the total 4.5 year study duration.
Substudy 1: Dose Optimization & Selection ControlACTIVE_COMPARATORParticipants will receive daratumumab, dexamethasone, and pomalidomide, as part of the total 4.5 year study duration.
Substudy 2: Dose Escalation ABBV-453 MonotherapyEXPERIMENTALJapanese participants will receive various doses of ABBV-453 as a monotherapy, to determine the best dose of ABBV-453, as part of the total 4.5 year study duration.
Substudy 3: Dose Escalation Surzetoclax + EtentamigEXPERIMENTALParticipants will receive various doses of both surzetoclax and etentamig, to determine the best dose of surzetoclax and etentamig, as part of the total 4.5 year study duration.
Substudy 3: Dose Optimization Etentamig Dose A CombinationEXPERIMENTALParticipants will receive etentamig dose A in combination with surzetoclax, as part of the total 4.5 year study duration.
Substudy 3: Dose Optimization Etentamig Dose B CombinationEXPERIMENTALParticipants will receive etentamig dose B in combination with surzetoclax, as part of the total 4.5 year study duration.
Substudy 3: Dose Optimization Etentamig MonotherapyEXPERIMENTALParticipants will receive etentamig, as part of the total 4.5 year study duration.

Interventions

NameTypeDescription
SurzetoclaxDRUGOral
DaratumumabDRUGSubcutaneous (SC) Injection
DexamethasoneDRUGOral
PomalidomideDRUGOral
EtentamigDRUGIntravenous Infusion
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites50

Inclusion Criteria: * Documented diagnosis of multiple myeloma (MM) based on standard international myeloma working group (IMWG) diagnostic criteria. * All participants must have measurable disease per central laboratory with at least 1 of the following assessed within 28 days prior to enrollment: ...

Countries:United StatesAustraliaBelgiumFranceGermanyIsraelItalyJapanPolandPortugalSwedenUnited Kingdom
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Competitive Landscape -Multiple Myeloma 338 trials

Recent Changes (Last 90 Days)

LOWSep 15, 2026NCT06953960lastUpdatePostDate: changed
LOWSep 15, 2026NCT06953960lastUpdatePostDate: changed
LOWSep 15, 2026NCT06953960lastUpdatePostDate: changed
LOWSep 11, 2026NCT06953960lastUpdatePostDate: changed
LOWSep 11, 2026NCT06953960lastUpdatePostDate: changed
MEDIUMSep 2, 2026NCT06953960Enrollment: 199 → 325
MEDIUMSep 2, 2026NCT06953960Enrollment: 199 → 325
MEDIUMSep 2, 2026NCT06953960Enrollment: 199 → 325

Frequently asked questions about Surzetoclax

What is Surzetoclax used for in multiple myeloma?

Surzetoclax is an investigational small molecule being studied for the treatment of multiple myeloma. It is currently in Phase 1 clinical development and is not yet approved by regulatory authorities. The drug is being evaluated alone and in combination with other antimyeloma agents in adult participants with multiple myeloma.

Who makes Surzetoclax?

Surzetoclax is being developed by AbbVie Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker ABBV. The company is conducting a Phase 1 clinical trial to assess the safety and efficacy of the drug in patients with multiple myeloma.

What phase is Surzetoclax in?

Surzetoclax is currently in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by the FDA or other regulatory agencies. The ongoing Phase 1 trial is actively recruiting participants to evaluate the drug's safety and disease activity in multiple myeloma.

What clinical trials is Surzetoclax in?

Surzetoclax is being studied in one active Phase 1 clinical trial with the identifier NCT06953960. This trial is recruiting 325 adult participants with multiple myeloma across multiple countries, including the United States, Australia, Belgium, France, Germany, Israel, Italy, Japan, Poland, Portugal, Sweden, and the United Kingdom.

Is Surzetoclax being tested alone or in combination?

Surzetoclax is being tested both alone and in combination with subcutaneous and/or oral antimyeloma agents. The Phase 1 trial is designed to assess adverse events and changes in disease activity when the drug is administered as a monotherapy or as part of a combination regimen in adults with multiple myeloma.

Is Surzetoclax a randomized controlled trial?

Yes, the Phase 1 clinical trial of Surzetoclax is randomized and active-controlled, meaning participants are assigned to different treatment groups to compare the investigational drug against an active control. The trial is not double-blinded and does not require a biomarker-selected patient population.