Stage IV Breast Cancer

• Memorial Sloan Kettering at Basking Ridge (All protocol activities) — Basking Ridge, New Jersey, United States
• Memorial Sloan Kettering Monmouth (All Protocol Activities) — Middletown, New Jersey, United States
• Memorial Sloan Kettering Bergen (All Protocol Activities) — Montvale, New Jersey, United States
• Memorial Sloan Kettering Suffolk-Commack (All Protocol Activities ) — Commack, New York, United States

• University of Miami — Miami, Florida, United States

• Dana-Farber Cancer Institute — Boston, Massachusetts, United States

Not specified

• University of Alabama at Birmingham Cancer Center — Birmingham, Alabama, United States
• Arizona Center for Cancer Care-Peoria — Peoria, Arizona, United States
• Banner University Medical Center - Tucson — Tucson, Arizona, United States
• City of Hope Comprehensive Cancer Center — Duarte, California, United States

• Northwestern University — Chicago, Illinois, United States

• City of Hope Medical Center — Duarte, California, United States
• City of Hope Antelope Valley — Lancaster, California, United States
• City of Hope- South Pasadena Cancer Center — South Pasadena, California, United States

• Georgetown University Medical Center — Washington D.C., District of Columbia, United States
• Dana-Farber Cancer Institute — Boston, Massachusetts, United States
• University of Michigan — Ann Arbor, Michigan, United States
• Mayo Clinic — Rochester, Minnesota, United States

• University of Colorado Cancer Center — Aurora, Colorado, United States

• Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium — Seattle, Washington, United States