Study of Bone Marrow and Blood Samples in Patients With Untreated Acute Myeloid Leukemia or Acute Lymphoblastic Leukemia Enrolled on Clinical Trial CALGB-9621 or CALGB-9720

Mount Sinai Medical Center, New York

CCOP - North Shore University Hospital, Manhasset

Don Monti Comprehensive Cancer Center at North Shore University Hospital, Manhasset

Long Island Jewish Medical Center, New Hyde Park

Monter Cancer Center of the North Shore-LIJ Health System, Lake Success

Queens Cancer Center of Queens Hospital, Jamaica

CCOP - Hematology-Oncology Associates of Central New York, East Syracuse

SUNY Upstate Medical University Hospital, Syracuse

CCOP - Christiana Care Health Services, Newark

Tunnell Cancer Center at Beebe Medical Center, Lewes

Union Hospital Cancer Program at Union Hospital, Elkton

Wayne Memorial Hospital, Incorporated, Goldsboro

Kinston Medical Specialists, Kinston

McLeod Regional Medical Center, Florence

Fort Wayne Medical Oncology and Hematology, Fort Wayne

Masonic Cancer Center at University of Minnesota, Minneapolis

Liberty Hospital, Liberty

Saint Luke's East - Lee's Summit, Lee's Summit

Truman Medical Center - Hospital Hill, Kansas City

Saint Luke's Cancer Institute at Saint Luke's Hospital, Kansas City

St. Joseph Medical Center, Kansas City

North Kansas City Hospital, Kansas City

Heartland Hematology Oncology Associates, Incorporated, Kansas City

CCOP - Kansas City, Kansas City

Research Medical Center, Kansas City

Heartland Regional Medical Center, Saint Joseph

Saint Joseph Oncology, Incorporated, Saint Joseph

Shawnee Mission Medical Center, Shawnee Mission

Menorah Medical Center, Overland Park

Saint Luke's Hospital - South, Overland Park

Methodist Estabrook Cancer Center, Omaha

University Medical Center of Southern Nevada, Las Vegas

CCOP - Nevada Cancer Research Foundation, Las Vegas

Naval Medical Center - San Diego, San Diego

Walter Reed Army Medical Center, Washington D.C.

University of Illinois Cancer Center, Chicago

University of Chicago Cancer Research Center, Chicago

Holden Comprehensive Cancer Center at University of Iowa, Iowa City

CancerCare of Maine at Eastern Maine Medical Center, Bangor

Norris Cotton Cancer Center at Dartmouth-Hitchcock Medical Center, Lebanon

Cancer Institute of New Jersey at Cooper - Voorhees, Voorhees Township

Roswell Park Cancer Institute, Buffalo

Lineberger Comprehensive Cancer Center at University of North Carolina - Chapel Hill, Chapel Hill

Blumenthal Cancer Center at Carolinas Medical Center, Charlotte

Wake Forest University Comprehensive Cancer Center, Winston-Salem

Memorial Hospital of Rhode Island, Pawtucket