GutCheck: Optimization of a Personalized Mobile Health App for Survivors of Gastrointestinal Cancer
16 de junio de 2026 actualizado por: Masonic Cancer Center, University of Minnesota
There are two components to the study: a patient and a clinician study.
The clinician study will include one-hour semi-structured interviews with oncology specialists to identify facilitators and barriers to integrating digital diet interventions into the clinical workflow, and to understand their needs and preferences for digital diet interventions.
The patient study aims to investigate initial feasibility, efficacy and acceptability of the GutCheck app and intervention.
It will last 9 weeks and involves 2 study visits and 2 active phases with a transition week and optional transition visit between phases.
During active phases, participants will be asked to use the GutCheck app every day.
Prior to the first active phase, participants will go through informed consent and app training.
The first active phase will last two weeks and will focus on tracking participants' diet, gastrointestinal (GI) symptoms, and stress.
The data collected during the first active phase will be used to identify any potential trigger foods that may contribute to GI symptoms, but only if the participant reports experiencing GI symptoms.
Between active phases, participants will have one Transition Week, where results from the first phase are given to the participants with the option to attend a Transition Week Visit.
The second active phase will last four weeks and will involve the message intervention.
A single-blind, micro-randomized trial design will be used to repeatedly randomize participants to different intervention combinations, determining both the timing and frequency of intervention message delivery throughout the day.
Lastly, there will be an exit visit and interview within a week from the intervention to collect post-intervention measures and ask about the participant's experience with the GutCheck app.
Descripción general del estudio
Estado
Aún no reclutando
Condiciones
Intervención / Tratamiento
Tipo de estudio
Intervencionista
Inscripción (Estimado)
200
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Estudio Contacto
- Nombre: Annie W. Lin, PhD, RD
- Número de teléfono: (612) 356 2001
- Correo electrónico: awlin@umn.edu
Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Sí
Descripción
Inclusion
Survivors of GI cancer are eligible if they are:
- ≥18 years old
- reside in or have received cancer care in Minnesota
- own a smartphone • consent to install the GutCheck app and discontinue diet tracking in other lifestyle apps (e.g., MyFitness, Fitbit, Noom).
- are English-speaking
- have received a GI cancer diagnosis (e.g., esophageal, gastric, colorectal, liver, pancreatic, etc)
- At least 2 months post-cancer treatment
Inclusion criteria for oncology specialists (oncologists, advanced practice providers, nurses, dietitians, and patient navigators) include:
- Have interacted with at least 1 cancer patient or survivor in the past month.
- Have experience working with electronic health records (EHR).
Exclusion
- Currently pregnant (Patient Study ONLY)
- Pregnancy status may be self-reported by the participant.
- Individuals who are postmenopausal, surgically sterile, or otherwise unable to become pregnant are not subject to this exclusion.
- Active cancer or receiving treatment for another cancer.
- Currently taking or has taken antibiotics in the last 3 months.
- Diagnosis of inflammatory bowel disease (e.g., Crohn's Disease, ulcerative colitis), and/or celiac disease.
- Involuntary weight loss of 10% or more of usual body weight within 6 months, or involuntary loss of 5% or more of usual body weight in 1 month.
Oncology specialists' exclusion criteria include:
- Unable to participate in an interview
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Investigación de servicios de salud
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación cruzada
- Enmascaramiento: Único
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Comparador activo: Personalization Level - No
The "no personalization" group will receive generic push messages based on United States Department of Agriculture and Centers for Disease Control and Prevention recommendations.
Within their personalization level, participants will be automatically randomized daily to varying message frequency (one vs. three times per day) and timing (preferred times vs. established times).
After each message, all participants will be asked to evaluate whether the message was useful using a 3-point Likert-type visual scale in the app.
|
Participants who were selected to collect their stool samples will be mailed their second kit before the last week (week 8) of intervention.
Participants will collect their stool sample during week 8 and mail them to be processed prior to the Exit Interview Visit.
Participants will be asked to log their food and beverages, stress, and gastrointestinal symptoms daily.
They will also track physical activity.
|
|
Comparador activo: Personalization Level - Low
The "low personalization" group will receive similar messages, with occasional use of their names and references to GI cancer.
Within their personalization level, participants will be automatically randomized daily to varying message frequency (one vs. three times per day) and timing (preferred times vs. established times).
After each message, all participants will be asked to evaluate whether the message was useful using a 3-point Likert-type visual scale in the app.
|
Participants who were selected to collect their stool samples will be mailed their second kit before the last week (week 8) of intervention.
Participants will collect their stool sample during week 8 and mail them to be processed prior to the Exit Interview Visit.
Participants will be asked to log their food and beverages, stress, and gastrointestinal symptoms daily.
They will also track physical activity.
|
|
Comparador activo: Personalization Level - High
The "high personalization" group messages will be further tailored to age and gender to provide social comparisons.
This group will receive food-related GI messages based on their responses from the personalization quiz during Week 1. Messages will emphasize affordable, commonly available foods to increase likelihood of accessibility.
Within their personalization level, participants will be automatically randomized daily to varying message frequency (one vs. three times per day) and timing (preferred times vs. established times).
After each message, all participants will be asked to evaluate whether the message was useful using a 3-point Likert-type visual scale in the app.
|
Participants who were selected to collect their stool samples will be mailed their second kit before the last week (week 8) of intervention.
Participants will collect their stool sample during week 8 and mail them to be processed prior to the Exit Interview Visit.
Participants will be asked to log their food and beverages, stress, and gastrointestinal symptoms daily.
They will also track physical activity.
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Adherence of Diet Tracking
Periodo de tiempo: 1 year
|
Average count of days where the participant tracked at least two episodes a day.
|
1 year
|
|
Adherence of Gastrointestinal (GI) Symptom and Stress Level Tracking
Periodo de tiempo: 1 year
|
Average count of days of GI symptom and stress tracking combination (i.e., once a day for two weeks for both).
|
1 year
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Colaboradores
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Estimado)
1 de diciembre de 2026
Finalización primaria (Estimado)
1 de junio de 2029
Finalización del estudio (Estimado)
1 de junio de 2030
Fechas de registro del estudio
Enviado por primera vez
16 de junio de 2026
Primero enviado que cumplió con los criterios de control de calidad
16 de junio de 2026
Publicado por primera vez (Actual)
22 de junio de 2026
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
22 de junio de 2026
Última actualización enviada que cumplió con los criterios de control de calidad
16 de junio de 2026
Última verificación
1 de junio de 2026
Más información
Términos relacionados con este estudio
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 2025LS135
- MNCCTN038 (Otro identificador: Minnesota Clinical Trials Network (MNCCTN))
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
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