- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04271215
Overweight and Obesity as Prognostic Factors for Survival in Children With Acute Lymphoblastic Leukemia
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Data collection Information regarding sex, age at diagnosis, place of residence, white blood cell (WBC) count, immunophenotype (B or T lineage), weight and height (length when appropriate) at diagnosis, and chemotherapy protocol is collected from the patients' clinical charts by previously standardized staff. Overcrowding was used as a proxy for socioeconomic status (SES) according to the Bronfman's criteria (high SES, up to 1.5 people per room; medium-low SES, more than 1.6 people per room). The risk classification is according to the criteria of the National Cancer Institute (NCI): standard risk [ages from 1 to 9.99 years; WBC count < 50 × 109/L] or as high risk [age < 1 or ≥ 10 years or WBC ≥ 50 × 109/L].
Assessment of nutritional status at diagnosis of ALL BMI at diagnosis will be used.. Using WHO software (version 3.2.2, World Health Organization, Geneva), the BMI-for-age Z-scores were calculated for each patient. According to WHO classification, patients were categorized as normal (- 1.9999 to 0.9999), wasted (- 2 to - 2.9999), severely wasted (≥ - 3), at risk of overweight (1-1.9999), overweight (2 to 2.9999) and obesity (≥3). In addition, the BMI percentiles cutoffs provided by CDC were: normal (p5-84.9999), underweight (< p5), overweight (p85-94.9999), and obese (≥ p95). The nutritional classification and measurements validation regarding weight and height recorded in clinical files used to classify patients' nutritional status in present research has been previously described. Underweight patients were excluded from the analyses.
Sample size The sample size calculation was performed using Epi-Info version 7 software taking into account a mortality outcome frequency of 10.8% in the unexposed group (normal weight patients) and a death outcome frequency of 24% for the exposed (obese/overweight patients), a statistical power of 80% and a confidence of 95%; resulting in a total "n" of 350 overweight/obese patients to be compared with the rest of the cohort that are not overweight and obese.
Statistical analysis Descriptive statistics and relative risks (RR) calculation with 95% confidence intervals (CI) will be carried out. Kaplan-Meier survival analysis will be conducted. Log-rank test will be calculated. The analyses will be conducted independently for disease-free-survival (DFS) or overall survival (OS), adjusting for variables whose effects on the studied outcomes have been previously documented (age, sex, socioeconomic status, immunophenotype, NCI risk classification, and chemotherapy protocol). A Cox proportional hazard model will be used. Hazard ratios (HR) with 95% CIs will be calculated.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Locations
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Mexico City, Mexico, 02990
- Centro Médico Nacional Hospital General La Raza, IMSS
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Mexico City, Mexico, 03103
- Hospital General Regional Num 1 Carlos McGregor Sánchez Navarro, IMSS
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Mexico City, Mexico, 06720
- Hospital de Pediatria "Dr. Silvestre Frenk Freund" CMN Siglo XXI, IMSS
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients under 15 years of age
- Newly diagnosed with acute lymphoblastic leukemia
- Diagnosis confirmation by bone marrow aspiration and immunophenotype
- Attended in the participating Hospitals.
Exclusion Criteria:
- Patients with Down Syndrome (for being a population with different disease behavior and cytogenetic alterations than patients without this genetic condition)
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Overweight/Obesity
BMI at diagnosis will be used.
Using WHO software (version 3.2.2,
World Health Organization, Geneva), the BMI-for-age Z-scores were calculated for each patient.
According to WHO classification, patients were categorized as normal (- 1.9999 to 0.9999), wasted (- 2 to - 2.9999), severely wasted (≥ - 3), at risk of overweight (1-1.9999),
overweight (2 to 2.9999) and obesity (≥3).
In addition, the BMI percentiles cutoffs provided by CDC were: normal (p5-84.9999),
underweight (< p5), overweight (p85-94.9999),
and obese (≥ p95).
The nutritional classification and measurements regarding weight and height recorded in clinical files will be used to classify patients' nutritional status in present research has been previously described.
|
Chemotherapy protocol used in each participating hospital
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Overall survival
Time Frame: year 5
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Deaths of patients occurring during the follow-up period will be collected.
The cause of death and the date that this occurred will be also registered.
In the case of patients alive at the end of follow-up, the date of the last visit to the hospital will be collected.
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year 5
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Disease-free survival
Time Frame: year 5
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Clinical data and by complementary examinations indicating that there is reappearance of the disease after complete remission has been achieved, presence of blasts > 5% in bone marrow (bone marrow relapse) or presence of blasts in cerebrospinal fluid fluid (CNS relapse), testicular infiltration by blasts in the biopsy (testicular relapse), combined (bone marrow/CNS) at any time during treatment .
In case the patient has relapsed, the site of relapse will be collected (bone marrow, CNS, testicle, ovary, eye, etc.).
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year 5
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Collaborators and Investigators
Investigators
- Principal Investigator: Juan M Mejía-Arangure, PhD, Instituto Mexicano del Seguro Social/Instituto Nacional de Medicina Genomica
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- R-2015-785-070
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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