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Safety and Tolerability of XmAb®5574 in Chronic Lymphocytic Leukemia

A Phase 1 Study of XmAb®5574 to Evaluate the Safety, Tolerability, and Pharmacokinetics in Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01161511
Enrollment
27
Registered
2010-07-13
Start date
2010-09-30
Completion date
2013-01-31
Last updated
2014-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma

Keywords

CLL, SLL, CD19

Brief summary

This is an open-label, multi-dose, single-arm, Phase 1, dose-escalation study of XmAb5574. The study was conducted to identify the maximum tolerated dose (MTD) and/or recommended dose(s) (RD) for further study, to characterize safety and tolerability, to characterize PK, PD and immunogenicity, and to evaluate preliminary antitumor activity of XmAb5574 in patients with relapsed or refractory CLL/SLL.

Interventions

BIOLOGICALXmAb5574

Intravenous infusion of XmAb5574 administered weekly during two 28-day cycles with an additional dose being administered during the first week of Cycle 1. (Cycle 1 on Days 1, 4, 8, 15, 22; Cycle 2 on Days 1, 8, 15, 22)

Sponsors

Xencor, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* relapsed or refractory CLL/SLL * at least 18 years of age * able to receive outpatient treatment and follow-up at the treating institution * completed all CLL therapies \> 4 weeks prior to first study dose

Exclusion criteria

* previously treated with an anti-CD19 antibody therapy * undergone prior allogeneic stem cell transplantation within 6 months or having active graft versus host disease * active Richter's syndrome * designated Class III or IV by the New York Heart Association (NYHA) criteria * history of myocardial infarction or stroke within the last 6 months * active viral, bacterial, or systemic fungal infection requiring treatment * HIV or Hepatitis C positive * Hepatitis B infection

Design outcomes

Primary

MeasureTime frame
To determine the dose limiting toxicities28 days

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 7, 2026