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XmAb24306

Phase 1

Multiple Myeloma | Small molecule | Oncology |Roche Holding AG|Last Updated: Jul 2, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

Clinical trial landscape

XmAb24306 · 2 trials · 2 indications

Phase 1 2
NCT05243342A Study to Evaluate the Safety and Pharmacokinetics of XMAB24306 in Combination With Daratumumab in Participants With Relapsed/Refractory Multiple MyelomaMultiple Myeloma
COMPLETED18 Analytics
NCT04250155An Open-Label Dose-Escalation Study to Evaluate XmAb24306 as a Single Agent and in Combination With Atezolizumab in Participants With Locally Advanced or Metastatic Solid TumorsSolid Tumors
COMPLETED195 Analytics
PHASE1COMPLETED
A Study to Evaluate the Safety and Pharmacokinetics of XMAB24306 in Combination With Daratumumab in Participants With Relapsed/Refractory Multiple Myeloma
Multiple MyelomaUnlock trial analytics
PHASE1COMPLETED
An Open-Label Dose-Escalation Study to Evaluate XmAb24306 as a Single Agent and in Combination With Atezolizumab in Participants With Locally Advanced or Metastatic Solid Tumors
Solid TumorsUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of participants with adverse events (AEs)
Up to approximately 3 years
Percentage of Participants with Adverse Events
Up to approximately 4 years

Secondary Endpoints

Serum concentration of XmAb24306
Baseline to approximately 3 years
Objective response rate (ORR)
Baseline to approximately 3 years
Prevalence of XmAb24306 anti-drug antibodies (ADAs)
Baseline to approximately 3 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose escalationEXPERIMENTALParticipants will receive escalating doses of XmAb24306 with daratumumab up to the maximum tolerated dose (MTD)
Dose expansionEXPERIMENTALParticipants will receive XmAb24306 with daratumumab at the recommended phase 2 dose (RP2D)
Phase 1a Dose EscalationEXPERIMENTALParticipants will receive XmAb24306 until study treatment discontinuation or study termination.
Phase 1a Dose ExpansionEXPERIMENTALParticipants will receive XmAb24306 until study treatment discontinuation or study termination.
Phase 1b Dose EscalationEXPERIMENTALParticipants will receive XmAb24306 and atezolizumab until study treatment discontinuation or study termination.
Phase 1b Dose ExpansionEXPERIMENTALParticipants will receive XmAb24306 and atezolizumab until study treatment discontinuation or study termination.

Interventions

NameTypeDescription
XmAb24306DRUGXmAb24306 will be given via intravenous (IV) infusion
DaratumumabDRUGParticipants will receive daratumumab via subcutaneous (SC) injection every week for Cycles 1-4, every 2 weeks for Cycles 5-12, and every 4 weeks thereafter (cycle length = 2 weeks for Cycles 1-12 and 4 weeks thereafter)
AtezolizumabDRUGParticipants will receive IV XmAb24306 followed by IV atezolizumab
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: * Life expectancy of at least 12 weeks * Measurable disease, as defined by the protocol * Participants must have received a minimum of 3 prior lines of therapy, including at least one PI, one IMiD, and an anti-CD38 monoclonal antibody * Best response of stable disease or better ...

Countries:AustraliaDenmarkNorwaySpainUnited StatesBelgiumBrazilCanadaItalyNetherlandsSouth Korea
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Competitive Landscape -Multiple Myeloma 221 trials

Top 20 of 25 competitors

CompanyTickerTrialsLead PhaseDrugs
AbbVie, Inc.ABBV16PHASE3Pomalidomide, Dexamethasone, Venetoclax
Bristol-Myers Squibb CompanyBMY18PHASE3Iberdomide, Lenalidomide
Takeda Pharmaceutical Co. Ltd. Sponsored ADRTAK5PHASE3IGI, 10%
GSK plc Sponsored ADRGSK17PHASE3Belantamab mafodotin, Pomalidomide, Dexamethasone, Bortezomib
Johnson & JohnsonJNJ28PHASE3Talquetamab, Pomalidomide, Teclistamab, Elotuzumab, Dexamethasone
Regeneron Pharmaceuticals, Inc.REGN11PHASE3Linvoseltamab, Carfilzomib, Daratumumab, Dexamethasone, Pomalidomide
Pfizer Inc.PFE11PHASE3Elranatamab, Lenalidomide
Sanofi SA Sponsored ADRSNY17PHASE3Isatuximab, Dexamethasone, Pomalidomide, Montelukast, Paracetamol/ Acetaminophen
AstraZeneca PLCAZN5PHASE3AZD0120, Daratumumab, Carfilzomib, Dexamethasone, Bortezomib
Gilead Sciences, Inc.GILD3PHASE3Anitocabtagene Autoleucel, Cyclophosphamide, Fludarabine, Pomalidomide, Bortezomib
Karyopharm Therapeutics, Inc.KPTI6PHASE3Selinexor, Elotuzumab, Pomalidomide, Dexamethasone
Grifols, S.A. Sponsored ADR Class BGRFS1PHASE3Xembify
BioLineRX Ltd. Sponsored ADRBLRX1PHASE3BL-8040/kg, G-CSF
C4 Therapeutics, Inc.CCCC3PHASE2Cemsidomide, Dexamethasone
Cellectar Biosciences, Inc.CLRB1PHASE2Iopofosine I 131 single dose, Iopofosine I 131 fractionated dose
GeoVax Labs, Inc.GOVX1PHASE2COVID-19 Vaccine, Synthetic MVA-based SARS-CoV-2 Vaccine GEO-CM04S1
Autolus Therapeutics Plc Sponsored ADRAUTL1PHASE2AUTO CAR T cell therapy
Incyte CorporationINCY2PHASE1Ruxolitinib, Lenalidomide, Methylprednisolone
Moderna, Inc.MRNA2PHASE1mRNA-2808
BeOne Medicines Ltd. Sponsored ADRONC1PHASE1Sonrotoclax, Dexamethasone, Carfilzomib, Daratumumab, Pomalidomide
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Recent Changes (Last 90 Days)

MEDIUMAug 2, 2026NCT04250155TRIAL_REMOVED: changed
MEDIUMAug 2, 2026NCT04250155TRIAL_REMOVED: changed
MEDIUMAug 2, 2026NCT04250155TRIAL_REMOVED: changed
MEDIUMAug 2, 2026NCT04250155TRIAL_REMOVED: changed

Frequently asked questions about XmAb24306

What is XmAb24306 used for?

XmAb24306 is an investigational oncology therapy being studied for solid tumors and multiple myeloma. It is in Phase 1 clinical development for locally advanced or metastatic solid tumors and for relapsed/refractory multiple myeloma. The drug is not approved and remains under clinical investigation.

Who makes XmAb24306?

XmAb24306 is being developed by Roche Holding AG, which trades under the ticker RHHBY. The company is conducting clinical trials of the drug in oncology indications including solid tumors and multiple myeloma.

What phase is XmAb24306 in?

XmAb24306 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. Two Phase 1 studies have been completed, one in solid tumors and one in multiple myeloma.

What clinical trials is XmAb24306 in?

XmAb24306 has been studied in two completed Phase 1 trials. NCT04250155 evaluated the drug as a single agent and in combination with atezolizumab in solid tumors. NCT05243342 evaluated it in combination with daratumumab in relapsed/refractory multiple myeloma.

Is XmAb24306 the same as XMAB24306?

Yes, XmAb24306 and XMAB24306 refer to the same drug. The capitalization of the name varies in clinical trial records, but both spellings denote the same investigational oncology therapy being developed by Roche.