NCT04453072 · Jonsson Comprehensive Cancer Center
A Study to See if an iPhone Weight Management App Can Help Promote Weight Loss in Adolescents and Young Adults After a Stem Cell Transplant
What this study is about
This early phase I trial studies how well a behavioral weight loss intervention consisting of a smartphone application and coaching works for the promotion of weight loss in adolescents and young adults after a stem cell transplant. This study may help researchers learn more about how adolescents and young adults can lose weight and develop healthy eating habits.
View original scientific description
This early phase I trial studies how well a behavioral weight loss intervention consisting of a smartphone application and coaching works for the promotion of weight loss in adolescents and young adults after a stem cell transplant. This study may help researchers learn more about how adolescents and young adults can lose weight and develop healthy eating habits.
Interventions
OTHER
Interview
Participate in interviews
OTHER
Media Intervention
Receive iPhone with W8Loss2Go app
OTHER
Questionnaire Administration
Complete questionnaires
OTHER
Scale Device
Receive body scale and food scale
BEHAVIORAL
Telephone-Based Intervention
Receive telephone calls
OTHER
Text Message
Receive text message
Primary outcome measures
Change in body mass index (BMI) status
Time frame: Baseline up to 12 months
The main outcomes measures will be height (meters), weight (kg), and BMI (kg/m\^2). Height will be measured to assess consistency in height measurements. Weight will be measured to assess trends in weight over the time span of the intervention. BMI will be measured as a product of weight and height to obtain an appropriate metric that accounts for these measures, and is the standard measure to assess weight progression in weight intervention studies.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients with a history of HSCT of any type, at least 100 days post-transplant at initial consultation of the study, will be eligible for the study
- Patients must classify as obese, represented as body mass index (BMI) \>= 85th percentile for age and gender
- Patients must also be able to read English since the app intervention is only available in English form
- No patients will be excluded for any specific underlying medical condition, but decisions will be made on a case by case basis if a patient's functioning is deemed to significantly interfere with intervention participation
- His/her child meets all inclusion criteria
- \>= 18 years of age
- Can speak English
Exclusion criteria
- Patients who are \< 100 days post-transplant at initial consultation will not be eligible for the study, but may become eligible if they are \> 100 days post-transplant at their next consultation that falls within the enrollment window
- Patients whose BMI does not fall under the obese category will be excluded
Where
- Los Angeles, California
Collaborators
eHealth International, INC.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 11, 2026 · Source of record for eligibility and locations