Clinical trial NCT00268528: Study to Assess Compliance With Long-Term Mercaptopurine Treatment in Young Patients With Acute Lymphoblastic Leukemia in Remission
Official title: Understanding the Ethnic and Racial Differences in Survival in Children With Acute Lymphoblastic Leukemia
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Childhood Acute Lymphoblastic Leukemia in Remission
Lead sponsor: Children's Oncology Group
Sponsor class: NETWORK
Collaborators: name: National Cancer Institute (NCI)
First posted: 2005-12-22
Enrollment: 720
Sex: ALL
Maximum age (years): 21
Standard ages: CHILD
ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Children with ALL from four different ethnic and racial groups (Caucasians, African-Americans, Hispanics, and Asians) receiving maintenance/continuation chemotherapy.

Brief summary: This clinical trial is assessing compliance with long-term mercaptopurine treatment in young patients with acute lymphoblastic leukemia in remission. Assessing why young patients who have acute lymphoblastic leukemia may not take their medications as prescribed may help identify ways to assist them in taking their medications more consistently and may improve long-term treatment outcomes.

Detailed description: PRIMARY OBJECTIVES:

I. To determine and compare adherence to maintenance mercaptopurine (6-MP) in a cohort of children with acute lymphoblastic leukemia (ALL) from four different ethnic and racial groups (Caucasians, African-Americans, Hispanics, and Asians) receiving maintenance/continuation chemotherapy, using the following assessments: serial red cell 6-MP metabolites (6-thioguanine \[6TGN\] and methyl thioinosine monophosphate \[TIMP\]); frequency of 6-MP dosing using an electronic pill monitoring system (Microelectromechanical Systems \[MEMS\]?); self-report of adherence to 6-MP by questionnaire.

II. To determine the impact of adherence to 6-MP (measured using 6TGN, methyl \[Me\]TIMP, MEMS? and self-report data independently) on event-free-survival (EFS) in the entire cohort, after adjusting for known predictors of disease outcome.

III. Define a critical level of adherence (measured independently by 6TGN, MeTIMP, MEMS?, self-report) that has a significant impact on EFS for the entire cohort.

IV. Describe prevalence of adherence to 6-MP by ethnicity (6TGN, MeTIMP, MEMS?, Self-report).

V. Describe behavioral and socio-demographic predictors of adherence using the questionnaire data.

VI. Describe the pill-taking practices in this cohort using the MEMS? data. VII. To evaluate the impact of adherence on ethnic/racial difference in EFS.

SECONDARY OBJECTIVES:

I. To assess the concordance among 6TGN and MeTIMP levels, electronic pill monitoring, and self-reported adherence in the ethnic/racial groups.

OUTLINE:

Patients receive an electronic pill monitoring system comprising an empty MEMS? medication bottle with TrackCap? child resistant (CR). The mercaptopurine prescription is filled using this system. Beginning on day 1 of the third or later course of maintenance therapy, patients take all doses of mercaptopurine from the MEMS? medication bottle with TrackCap? CR for at least 169 days. The MEMS? TrackCap? CR is mailed to the Coordinating Center at the end of study. Patients also receive methotrexate orally (PO) as indicated by their individual chemotherapy regimen.

NOTE: \*Study closed to accrual for Caucasian and Hispanic patients as of 8/14/2009.

After completion of study, patients are followed up every 6 months for 5 years and then annually for up to 10 years.

Eligibility criteria: Inclusion Criteria:

* Diagnosis of ALL in first remission, irrespective of risk stratification; enrollment on a Children's Oncology Group (COG) therapeutic study for ALL is not required, but the treatment plan must meet the criteria in this protocol
* Belongs to one of the four following ethnic/racial categories: African-American, Asian, Caucasian, or Hispanic; below please find definitions for these categories

  * African-American: includes patients who are African-American or of sub-Saharan black African ancestry
  * Asian: patients of Asian ancestry, including the following: Asian Indian (subcontinent), Chinese, Japanese, Korean, Native Hawaiian, Guamanian or Chamorro, Pacific Islander, Filipino, Vietnamese, Samoan, Hmong, Cambodian, Thai, Laotian, or Other Asian races
  * Caucasian: includes White or light-skinned patients of European, North African, or Middle Eastern ancestry
  * Hispanic: patients of Hispanic ethnicity, including the following: Mexican, Mexican American, Chicano, Cuban, Puerto Rican, or Other Spanish/Hispanic/Latino ethnicity
* Receiving self- or parent/caregiver-administered oral anti-metabolite chemotherapy during the maintenance/continuation phase of therapy; patients are eligible if their treatment plan calls for the following doses of 6-MP and methotrexate (MTX) during the maintenance/continuation phase: 6-MP ? 75 mg/m\^2/day orally; MTX 20 mg/m\^2/week orally;\*\* (modification of 6-MP or MTX dosing based on laboratory or clinical parameters is acceptable)

  * For guidance regarding if and when a patient being treated on or according to a specific COG (or legacy group) protocol is eligible, please refer to ?AALL03N1 Eligibility by Protocol Tool,? available in the study data forms packet on the COG website
* Has completed at least 24 weeks of maintenance/continuation chemotherapy, and is scheduled to receive at least 24 more weeks of maintenance/continuation chemotherapy\*\*

  * For guidance regarding if and when a patient being treated on or according to a specific COG (or legacy group) protocol is eligible, please refer to ?AALL03N1 Eligibility by Protocol Tool,? available in the study data forms packet on the COG website
* Written informed consent from the patient and/or the patient?s legally authorized guardian, obtained prior to registration and any study-related procedures, and in accordance with institutional policies approved by the United States (U.S) Department of Health and Human Services

Exclusion Criteria:

* Patients of multi-ethnic/multi-racial backgrounds are not eligible for this study; while patients of multi-ethnic/multi-racial ancestry (e.g., Caucasian/Japanese, Hawaiian/Puerto Rican) are not eligible, patients of mixed ancestry within a race/ethnicity (e.g., Japanese/Chinese = Asian or Korean/Japanese/Hawaiian = Asian or Mexican/Puerto Rican = Hispanic) may participate as long as they fall under the general classification of "African-American," "Asian," "Caucasian," or "Hispanic"

Primary outcomes:
measure: Adherence to 6-MP as measured by 6TGN and MethylTIMP levels
timeFrame: 169 days
measure: Adherence as measured by frequency of 6-MP dosing as a continuous variable using MEMS? defined as the number of days the MEMS? Cap openings are recorded, taken as a percentage of days doses were prescribed during the study period
timeFrame: Up to 169 days
measure: Self-report of adherence to 6-MP by questionnaire, defined as the number of days doses of 6-MP are reported to being taken, as a percentage of days doses were prescribed during the study period
timeFrame: 169 days
measure: EFS
timeFrame: Up to 10 years
measure: Critical level of adherence (measured independently by 6TGN/MethylTIMP, MEMS?, self-report) that has a significant impact on EFS
timeFrame: Up to 10 years
measure: Prevalence of adherence to 6-MP by ethnicity (measured independently by 6TGN/MethylTIMP, MEMS?, Self-report) that has a significant impact on EFS
timeFrame: Up to 10 years
measure: Behavioral, socio-demographic predictors of adherence using the questionnaire data
timeFrame: Up to 10 years
measure: Pill-taking practices using the MEMS? data
timeFrame: Up to 169 days
measure: Impact of adherence (measured independently by 6TGN/MethylTIMP, MEMS, self-report) on ethnic/racial differences in EFS
timeFrame: Up to 10 years
Secondary outcomes:
measure: Concordance among red cell thiopurine metabolite levels, electronic pill monitoring, and self-reported adherence among the ethnic/racial groups
timeFrame: Up to 168 days
Other outcomes:
Locations:
city: Birmingham
country: United States
facility: Children's Hospital of Alabama
state: Alabama
city: Birmingham
country: United States
facility: University of Alabama at Birmingham Cancer Center
state: Alabama
city: Little Rock
country: United States
facility: University of Arkansas for Medical Sciences
state: Arkansas
city: Downey
country: United States
facility: Kaiser Permanente Downey Medical Center
state: California
city: Duarte
country: United States
facility: City of Hope Comprehensive Cancer Center
state: California
city: Loma Linda
country: United States
facility: Loma Linda University Medical Center
state: California
city: Long Beach
country: United States
facility: Miller Children's and Women's Hospital Long Beach
state: California
city: Los Angeles
country: United States
facility: Children's Hospital Los Angeles
state: California
city: Los Angeles
country: United States
facility: Mattel Children's Hospital UCLA
state: California
city: Los Angeles
country: United States
facility: UCLA / Jonsson Comprehensive Cancer Center
state: California
city: Madera
country: United States
facility: Valley Children's Hospital
state: California
city: Oakland
country: United States
facility: Children's Hospital and Research Center at Oakland
state: California
city: Palo Alto
country: United States
facility: Lucile Packard Children's Hospital Stanford University
state: California
city: Sacramento
country: United States
facility: University of California Davis Comprehensive Cancer Center
state: California
city: San Diego
country: United States
facility: Rady Children's Hospital - San Diego
state: California
city: San Francisco
country: United States
facility: UCSF Medical Center-Parnassus
state: California
city: Torrance
country: United States
facility: Harbor-University of California at Los Angeles Medical Center
state: California
city: Aurora
country: United States
facility: Children's Hospital Colorado
state: Colorado
city: Farmington
country: United States
facility: University of Connecticut
state: Connecticut
city: Hartford
country: United States
facility: Connecticut Children's Medical Center
state: Connecticut
city: New Haven
country: United States
facility: Yale University
state: Connecticut
city: Wilmington
country: United States
facility: Alfred I duPont Hospital for Children
state: Delaware
city: Washington
country: United States
facility: MedStar Georgetown University Hospital
state: District of Columbia
city: Washington
country: United States
facility: Children's National Medical Center
state: District of Columbia
city: Fort Myers
country: United States
facility: Lee Memorial Health System
state: Florida
city: Gainesville
country: United States
facility: University of Florida Health Science Center - Gainesville
state: Florida
city: Hollywood
country: United States
facility: Memorial Regional Hospital/Joe DiMaggio Children's Hospital
state: Florida
city: Jacksonville
country: United States
facility: Nemours Children's Clinic-Jacksonville
state: Florida
city: Miami
country: United States
facility: University of Miami Miller School of Medicine-Sylvester Cancer Center
state: Florida
city: Miami
country: United States
facility: Miami Cancer Institute
state: Florida
city: Orlando
country: United States
facility: AdventHealth Orlando
state: Florida
city: Orlando
country: United States
facility: Nemours Children's Clinic - Orlando
state: Florida
city: Pensacola
country: United States
facility: Nemours Children's Clinic - Pensacola
state: Florida
city: Pensacola
country: United States
facility: Sacred Heart Hospital
state: Florida
city: Saint Petersburg
country: United States
facility: Johns Hopkins All Children's Hospital
state: Florida
city: Tampa
country: United States
facility: Saint Joseph's Hospital/Children's Hospital-Tampa
state: Florida
city: Atlanta
country: United States
facility: Children's Healthcare of Atlanta - Egleston
state: Georgia
city: Augusta
country: United States
facility: Augusta University Medical Center
state: Georgia
city: Honolulu
country: United States
facility: University of Hawaii Cancer Center
state: Hawaii
city: Chicago
country: United States
facility: Rush University Medical Center
state: Illinois
city: Chicago
country: United States
facility: University of Illinois
state: Illinois
city: Maywood
country: United States
facility: Loyola University Medical Center
state: Illinois
city: Oak Lawn
country: United States
facility: Advocate Children's Hospital-Oak Lawn
state: Illinois
city: Park Ridge
country: United States
facility: Advocate Lutheran General Hospital
state: Illinois
city: Indianapolis
country: United States
facility: Indiana University/Melvin and Bren Simon Cancer Center
state: Indiana
city: Indianapolis
country: United States
facility: Saint Vincent Hospital and Health Care Center
state: Indiana
city: Des Moines
country: United States
facility: Blank Children's Hospital
state: Iowa
city: Lexington
country: United States
facility: University of Kentucky/Markey Cancer Center
state: Kentucky
city: New Orleans
country: United States
facility: Tulane University Health Sciences Center
state: Louisiana
city: New Orleans
country: United States
facility: Children's Hospital New Orleans
state: Louisiana
city: Bangor
country: United States
facility: Eastern Maine Medical Center
state: Maine
city: Ann Arbor
country: United States
facility: C S Mott Children's Hospital
state: Michigan
city: Detroit
country: United States
facility: Wayne State University/Karmanos Cancer Institute
state: Michigan
city: Detroit
country: United States
facility: Ascension Saint John Hospital
state: Michigan
city: Flint
country: United States
facility: Hurley Medical Center
state: Michigan
city: Grand Rapids
country: United States
facility: Helen DeVos Children's Hospital at Spectrum Health
state: Michigan
city: Grand Rapids
country: United States
facility: Spectrum Health at Butterworth Campus
state: Michigan
city: Minneapolis
country: United States
facility: Children's Hospitals and Clinics of Minnesota - Minneapolis
state: Minnesota
city: Minneapolis
country: United States
facility: University of Minnesota/Masonic Cancer Center
state: Minnesota
city: Jackson
country: United States
facility: University of Mississippi Medical Center
state: Mississippi
city: Columbia
country: United States
facility: University of Missouri - Ellis Fischel
state: Missouri
city: Kansas City
country: United States
facility: Children's Mercy Hospitals and Clinics
state: Missouri
city: Saint Louis
country: United States
facility: Washington University School of Medicine
state: Missouri
city: Omaha
country: United States
facility: University of Nebraska Medical Center
state: Nebraska
city: Las Vegas
country: United States
facility: Nevada Cancer Research Foundation CCOP
state: Nevada
city: Lebanon
country: United States
facility: Dartmouth Hitchcock Medical Center
state: New Hampshire
city: Hackensack
country: United States
facility: Hackensack University Medical Center
state: New Jersey
city: Livingston
country: United States
facility: Saint Barnabas Medical Center
state: New Jersey
city: Newark
country: United States
facility: Newark Beth Israel Medical Center
state: New Jersey
city: Paterson
country: United States
facility: Saint Joseph's Regional Medical Center
state: New Jersey
city: Summit
country: United States
facility: Overlook Hospital
state: New Jersey
city: Albuquerque
country: United States
facility: University of New Mexico Cancer Center
state: New Mexico
city: Bronx
country: United States
facility: Montefiore Medical Center - Moses Campus
state: New York
city: Brooklyn
country: United States
facility: Brooklyn Hospital Center
state: New York
city: Buffalo
country: United States
facility: Roswell Park Cancer Institute
state: New York
city: Mineola
country: United States
facility: NYU Winthrop Hospital
state: New York
city: New York
country: United States
facility: Laura and Isaac Perlmutter Cancer Center at NYU Langone
state: New York
city: New York
country: United States
facility: NYP/Columbia University Medical Center/Herbert Irving Comprehensive Cancer Center
state: New York
city: Stony Brook
country: United States
facility: Stony Brook University Medical Center
state: New York
city: Syracuse
country: United States
facility: State University of New York Upstate Medical University
state: New York
city: Valhalla
country: United States
facility: New York Medical College
state: New York
city: Asheville
country: United States
facility: Mission Hospital Inc-Memorial Campus
state: North Carolina
city: Charlotte
country: United States
facility: Novant Health Presbyterian Medical Center
state: North Carolina
city: Durham
country: United States
facility: Duke University Medical Center
state: North Carolina
city: Winston-Salem
country: United States
facility: Wake Forest University Health Sciences
state: North Carolina
city: Akron
country: United States
facility: Children's Hospital Medical Center of Akron
state: Ohio
city: Cleveland
country: United States
facility: Rainbow Babies and Childrens Hospital
state: Ohio
city: Columbus
country: United States
facility: Nationwide Children's Hospital
state: Ohio
city: Dayton
country: United States
facility: Dayton Children's Hospital
state: Ohio
city: Toledo
country: United States
facility: The Toledo Hospital/Toledo Children's Hospital
state: Ohio
city: Oklahoma City
country: United States
facility: University of Oklahoma Health Sciences Center
state: Oklahoma
city: Tulsa
country: United States
facility: Natalie Warren Bryant Cancer Center at Saint Francis
state: Oklahoma
city: Portland
country: United States
facility: Legacy Emanuel Hospital and Health Center
state: Oregon
city: Bethlehem
country: United States
facility: Lehigh Valley Hospital - Muhlenberg
state: Pennsylvania
city: Danville
country: United States
facility: Geisinger Medical Center
state: Pennsylvania
city: Philadelphia
country: United States
facility: Children's Hospital of Philadelphia
state: Pennsylvania
city: Pittsburgh
country: United States
facility: Children's Hospital of Pittsburgh of UPMC
state: Pennsylvania
city: Providence
country: United States
facility: Rhode Island Hospital
state: Rhode Island
city: Columbia
country: United States
facility: Prisma Health Richland Hospital
state: South Carolina
city: Sioux Falls
country: United States
facility: Sanford USD Medical Center - Sioux Falls
state: South Dakota
city: Chattanooga
country: United States
facility: T C Thompson Children's Hospital
state: Tennessee
city: Knoxville
country: United States
facility: East Tennessee Childrens Hospital
state: Tennessee
city: Nashville
country: United States
facility: Vanderbilt University/Ingram Cancer Center
state: Tennessee
city: Amarillo
country: United States
facility: Texas Tech University Health Sciences Center-Amarillo
state: Texas
city: Austin
country: United States
facility: Dell Children's Medical Center of Central Texas
state: Texas
city: Corpus Christi
country: United States
facility: Driscoll Children's Hospital
state: Texas
city: Dallas
country: United States
facility: Medical City Dallas Hospital
state: Texas
city: Dallas
country: United States
facility: UT Southwestern/Simmons Cancer Center-Dallas
state: Texas
city: Houston
country: United States
facility: Baylor College of Medicine/Dan L Duncan Comprehensive Cancer Center
state: Texas
city: Lubbock
country: United States
facility: Covenant Children's Hospital
state: Texas
city: San Antonio
country: United States
facility: Methodist Children's Hospital of South Texas
state: Texas
city: San Antonio
country: United States
facility: University of Texas Health Science Center at San Antonio
state: Texas
city: Temple
country: United States
facility: Scott and White Memorial Hospital
state: Texas
city: Salt Lake City
country: United States
facility: Primary Children's Hospital
state: Utah
city: Burlington
country: United States
facility: University of Vermont and State Agricultural College
state: Vermont
city: Falls Church
country: United States
facility: Inova Fairfax Hospital
state: Virginia
city: Richmond
country: United States
facility: Virginia Commonwealth University/Massey Cancer Center
state: Virginia
city: Seattle
country: United States
facility: Seattle Children's Hospital
state: Washington
city: Spokane
country: United States
facility: Providence Sacred Heart Medical Center and Children's Hospital
state: Washington
city: Tacoma
country: United States
facility: Madigan Army Medical Center
state: Washington
city: Charleston
country: United States
facility: West Virginia University Charleston Division
state: West Virginia
city: Green Bay
country: United States
facility: Saint Vincent Hospital Cancer Center Green Bay
state: Wisconsin
city: Marshfield
country: United States
facility: Marshfield Medical Center-Marshfield
state: Wisconsin
city: Milwaukee
country: United States
facility: Children's Hospital of Wisconsin
state: Wisconsin
city: Perth
country: Australia
facility: Princess Margaret Hospital for Children
state: Western Australia
city: Edmonton
country: Canada
facility: University of Alberta Hospital
state: Alberta
city: Vancouver
country: Canada
facility: British Columbia Children's Hospital
state: British Columbia
city: Halifax
country: Canada
facility: IWK Health Centre
state: Nova Scotia
city: Kingston
country: Canada
facility: Kingston Health Sciences Centre
state: Ontario
city: London
country: Canada
facility: Children's Hospital
state: Ontario
city: London
country: Canada
facility: Victoria Hospital
state: Ontario
city: Toronto
country: Canada
facility: Hospital for Sick Children
state: Ontario
city: Montreal
country: Canada
facility: The Montreal Children's Hospital of the MUHC
state: Quebec
city: Regina
country: Canada
facility: Allan Blair Cancer Centre
state: Saskatchewan
city: Saskatoon
country: Canada
facility: Saskatoon Cancer Centre
state: Saskatchewan
Study officials:
affiliation: Children's Oncology Group
name: Smita Bhatia
role: PRINCIPAL_INVESTIGATOR
References:
citation: Yang JJ, Landier W, Yang W, Liu C, Hageman L, Cheng C, Pei D, Chen Y, Crews KR, Kornegay N, Wong FL, Evans WE, Pui CH, Bhatia S, Relling MV. Inherited NUDT15 variant is a genetic determinant of mercaptopurine intolerance in children with acute lymphoblastic leukemia. J Clin Oncol. 2015 Apr 10;33(11):1235-42. doi: 10.1200/JCO.2014.59.4671. Epub 2015 Jan 26.
citation: Bhatia S, Landier W, Hageman L, Kim H, Chen Y, Crews KR, Evans WE, Bostrom B, Casillas J, Dickens DS, Maloney KW, Neglia JP, Ravindranath Y, Ritchey AK, Wong FL, Relling MV. 6MP adherence in a multiracial cohort of children with acute lymphoblastic leukemia: a Children's Oncology Group study. Blood. 2014 Oct 9;124(15):2345-53. doi: 10.1182/blood-2014-01-552166. Epub 2014 May 14.