RecruitingPhase 1NCT06952010

A Study of XB628 in Participants With Recurrent Advanced or Metastatic Solid Tumors

A Phase 1 Study of XB628 in Participants With Recurrent Advanced or Metastatic Solid Tumors


Sponsor

Exelixis

Enrollment

75 participants

Start Date

May 1, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

This is a phase 1, first-in-human, open-label, dose-escalation study of XB628, a first-in-class bispecific antibody natural killer (NK) cell engager that targets NK group 2 member A (NKG2A), an inhibitory receptor on NK cells, and programmed cell death-ligand 1 (PD-L1).


Eligibility

Min Age: 18 Years

Inclusion Criteria8

  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1.
  • Minimum life expectancy of ≥ 12 weeks.
  • Have a recurrent advanced or metastatic solid tumor that is histologically or cytologically confirmed.
  • Adequate organ and marrow function.
  • Not amenable to curative treatment with surgery or radiation.
  • Received at least 1 line of prior systemic anticancer therapy in the recurrent or metastatic setting.
  • Acceptable alternative therapy was received, refused, intolerable, or no longer effective.
  • Capable of understanding and complying with the protocol requirements and provide signed informed consent according to the protocol and local requirements.

Exclusion Criteria5

  • Primary brain tumors or known active brain metastases.
  • Major surgery (eg, gastrointestinal surgery, removal or biopsy of brain metastasis) within 4 weeks before the first dose of study treatment.
  • Received radiation therapy within 1 week before the first dose of study treatment or clinically relevant ongoing complications from prior radiation therapy.
  • Received prior therapy targeting NK cells (eg, monalizumab).
  • A woman of childbearing potential has a positive serum pregnancy test within 7 days prior to study treatment.

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Interventions

BIOLOGICALXB628

Intravenous infusion(s)


Locations(10)

Exelixis Site #5

San Francisco, California, United States

Exelixis Site #4

New Haven, Connecticut, United States

Exelixis Clinical Site #8

Tampa, Florida, United States

Exelixis Clinical Site #10

Boston, Massachusetts, United States

Exelixis Site #6

St Louis, Missouri, United States

Exelixis Site #7

New York, New York, United States

Exelixis Clinical Site #1

Hickory, North Carolina, United States

Exelixis Clinical Site #3

Nashville, Tennessee, United States

Exelixis Clinical Site #9

Houston, Texas, United States

Exelixis Clinical Site #2

San Antonio, Texas, United States

View Full Details on ClinicalTrials.gov

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NCT06952010


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