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Plamotamab

Phase 1

Rheumatoid Arthritis | Monoclonal antibody | Immunology |Xencor, Inc.|Last Updated: Aug 3, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment68

FDA Designations

No designations recorded

Clinical trial landscape

Plamotamab · 1 trial · 1 indication

Phase 1 1
NCT07230353A Phase 1b Open-label Study to Evaluate Safety of Plamotamab in Participants With Rheumatoid ArthritisRheumatoid Arthritis
RECRUITING68 Analytics
PHASE1RECRUITING
A Phase 1b Open-label Study to Evaluate Safety of Plamotamab in Participants With Rheumatoid Arthritis
Rheumatoid ArthritisUnlock trial analytics

Study Endpoints

Primary Endpoints

Primary
Through Week 52

Percentage of participants with treatment emergent adverse events (TEAEs) and serious adverse events (SAEs)

Secondary Endpoints

Secondary
Through Week 52
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose EscalationEXPERIMENTALPlamotamab administered SC

Interventions

NameTypeDescription
PlamotamabBIOLOGICALBiological
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: Adult participants with moderately to severely active RA. * Documented diagnosis of RA and meeting the 2010 American College of Rheumatology/European Alliance of Associations for Rheumatology classification criteria for RA at least 3 months prior to screening * Inadequate respon...

Countries:GeorgiaMoldovaNew Zealand
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Recent Changes (Last 90 Days)

LOWAug 3, 2026NCT07230353lastUpdatePostDate: changed
LOWAug 3, 2026NCT07230353lastUpdatePostDate: changed

Frequently asked questions about Plamotamab

What is Plamotamab used for?

Plamotamab is an investigational monoclonal antibody being studied for the treatment of rheumatoid arthritis. It is currently in Phase 1 clinical development, with an ongoing open-label trial evaluating its safety in participants with this condition.

What does Plamotamab target?

Plamotamab is a monoclonal antibody, classified as a -mab (antibody) therapeutic. Its specific molecular target has not been disclosed in available information, so the precise mechanism of action is not detailed.

Who is developing Plamotamab?

Plamotamab is being developed by Xencor, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol XNCR. The company is conducting a Phase 1 clinical trial for this drug in rheumatoid arthritis.

What phase is Plamotamab in?

Plamotamab is in Phase 1 clinical development. It is an investigational drug, not yet approved by regulatory authorities. The current trial is a Phase 1b open-label study focused on evaluating safety in participants with rheumatoid arthritis.

What clinical trials is Plamotamab in?

Plamotamab is being studied in a single active clinical trial, identified as NCT07230353. This is a Phase 1b open-label study titled 'A Phase 1b Open-label Study to Evaluate Safety of Plamotamab in Participants With Rheumatoid Arthritis,' which is currently recruiting participants.

Is Plamotamab the same as any other drug?

Plamotamab is a distinct investigational monoclonal antibody developed by Xencor, Inc. No alternative names for this drug have been reported in available clinical trial information, so it is not known to be identical to any other approved or investigational therapy.