Biomarkers in Blood Samples From Patients With Stage IV Melanoma Previously Treated With Sargramostim

Eastern Cooperative Oncology Group

Status: Completed

Conditions: Melanoma (Skin)

Treatments: Other: flow cytometry; Other: laboratory biomarker analysis; Other: immunologic technique

Study type: Observational

Funder types: NETWORK; NIH

Identifiers

NCT01388569

CDR0000703098

ECOG-E4697T1

Details and patient eligibility

About

RATIONALE: Studying samples of blood from patients treated with sargramostim in the laboratory may help doctors learn more about the effects of sargramostim on cells. It may also help doctors understand how patients respond to treatment.

PURPOSE: This research trial studies biomarkers in blood samples from patients with stage IV melanoma previously treated with sargramostim.

Full description

OBJECTIVES:

Primary

To correlate circulating myeloid-derived suppressor cells (MDSC) and Treg frequencies with clinical outcome.

Secondary

To correlate circulating anti-sargramostim (GM-CSF) antibody levels with clinical outcome.

OUTLINE: Archived peripheral blood mononuclear cells and serum samples are analyzed for circulating myeloid-derived suppressor cells, Treg (CD3+/CD4+/CD25hi/FOXP3+) frequency, and anti-sargramostim (anti-GM-CSF) antibody levels by flow cytometry and anti-GM-CSF neutralizing antibody assay.

Enrollment: 48 patients

Sex: All

Ages: 18 to 120 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

DISEASE CHARACTERISTICS:

• Diagnosed with melanoma

  • Stage IV disease
  • HLA-A2^+ and A2^+

• Received sargramostim on clinical trial ECOG-4697

• Specimens collected at baseline and either day 43 or day 85 (based on most consistent availability) from long-term survivors and patients with poor survival

PATIENT CHARACTERISTICS:

• Not specified

PRIOR CONCURRENT THERAPY:

• See Disease Characteristics