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Study of XL999 in Patients With Acute Myeloid Leukemia (AML)

A Phase 2 Study of XL999 Administered Intravenously to Subjects With Acute Myeloid Leukemia

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00322673
Enrollment
14
Registered
2006-05-08
Start date
2006-05-31
Completion date
2007-05-31
Last updated
2010-02-22

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

Conditions

Acute Myeloid Leukemia, AML

Keywords

acute myeloid leukemia, AML

Brief summary

This clinical study is being conducted at multiple sites to determine the activity, safety and tolerability of XL999 when given weekly to patients with relapsed or newly-diagnosed AML. XL999 is a small molecule inhibitor against Flk1/kinase insert domain receptor (KDR), PDGFR, c-Kit, FLT3 and SRC. c-Kit and FLT3 are receptors commonly expressed on AML blasts.

Interventions

DRUGXL999

XL999 was administered at a dose of 2.4 mg/kg given as a 4-hour IV infusion weekly for 4 weeks. In the absence of progressive disease and unacceptable toxicity, subjects were to receive XL999 treatment weekly for up to 1 year on this study

Sponsors

Symphony Evolution, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Diagnosis of acute myeloid leukemia (except AML FAB-M3 or acute promyelocytic leukemia \[APL\]) based on the World Health Organization (WHO) classification of ≥ 20% blasts in the bone marrow or peripheral blood at initial diagnosis (prior to start of standard chemotherapy) * ECOG performance status of 0 or 1 * Subjects with newly-diagnosed AML or subjects with relapsed AML after at least 2 chemotherapy regimens. * Adequate liver and renal function * Signed informed consent

Exclusion criteria

* Anticancer therapy including chemotherapeutic, biologic, or investigative agents within 30 days of XL999 treatment * Hematopoietic stem cell transplantation within the previous 6 weeks * Immunosuppressive therapy (eg, cyclosporine, steroids, tacrolimus) for graft-versus-host disease (GvHD) within 30 days prior to the start of XL999 * The subject has not recovered to grade ≤ 1 or to within 10% of baseline from adverse events due to investigational or chemotherapeutic drugs or stem cell transplantation which were administered \> 4 weeks prior to study enrollment * Uncontrolled and/or concomitant illness * Pregnant or breastfeeding females * Known HIV

Design outcomes

Primary

MeasureTime frame
Hematologic and cytogenetic response rateInclusion until disease progression
Safety and tolerabilityInclusion until 30 dyas post last treatment

Secondary

MeasureTime frame
Duration of hematologic response and transfusion independenceInclusion until disease progression
Progression-free survivalInclusion until disease progression
Overall survivalInclusion until 180-day Follow-up post last treatment or death

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026