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NCT03849469 · ClinicalTrials.gov registry record · Phase 1

A Study of XmAb®22841 Monotherapy & in Combination w/ Pembrolizumab in Subjects w/ Selected Advanced Solid Tumors

A Phase 1 study, sponsored by Xencor.

Completed
Registry status
Phase 1
Development phase
78
Enrollment target

NCT03849469: Completed Phase 1 study, sponsored by Xencor.

NCT03849469 is a Phase 1 study that has completed, run by Xencor. The registered enrollment target is 78 participants, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (30% higher). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT03849469, a Phase 1 study, has completed, sponsored by Xencor.

COMPLETED
Registry status
Phase 1
Development phase
78 participants
Enrollment target

Study Summary

This is a Phase 1, multiple dose, ascending-dose escalation study and expansion study designed to define a maximum tolerated dose and/or recommended dose of XmAb22841 monotherapy and in combination with pembrolizumab; to assess safety, tolerability, pharmacokinetics, immunogenicity, and anti-tumor activity of XmAb22841 monotherapy and in combination with pembrolizumab in subjects with select advanced solid tumors.

Primary Outcome

Rates of treatment-related adverse events (AEs), graded by CTCAE v4.03, and additionally categorized as either immune-related or non-immune AEs.

Interventions

  • BIOLOGICAL XmAb®22841
  • BIOLOGICAL Pembrolizumab (Keytruda®)

Trial Details

FieldValue
Enrollment Target 78 participants
Start Date 2019-05-29
Est. Completion 2023-02-16
Phase Phase 1
Xencor

27 total trials

What the finished NCT03849469 record still lists

NCT03849469 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 78 participants, a relatively small participant target, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (30% higher).

The record links to 0 conditions, and to 2 interventions - of which XmAb®22841 is the first listed.

NCT03849469 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03849469 about?

NCT03849469 is a clinical study titled "A Study of XmAb®22841 Monotherapy & in Combination w/ Pembrolizumab in Subjects w/ Selected Advanced Solid Tumors". This is a Phase 1, multiple dose, ascending-dose escalation study and expansion study designed to define a maximum tolerated dose and/or recommended dose of XmAb22841 monotherapy and in combination with pembrolizumab; to assess safety, tolerability, pharmacokinetics, immunogenicity, and anti-tumor a...

What is the current status of trial NCT03849469?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 78 participants. The study started on 2019-05-29. Estimated completion is 2023-02-16.

What interventions are being tested in trial NCT03849469?

The interventions under investigation include: XmAb®22841 (BIOLOGICAL), Pembrolizumab (Keytruda®) (BIOLOGICAL).

Who is sponsoring clinical trial NCT03849469?

This trial is sponsored by Xencor, which has 27 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03849469's enrollment target sits among peer trials

78 697th of 2000 higher than 1,298 of 2,000 other Phase 1 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT03849469, the US trial registry maintained by the National Library of Medicine. NCT03849469 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.