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CompletedNCT04040881Updated Oct 6, 2023

Accuracy of a Mobile Sensor-Based System for the Detection of Chemotherapy Toxicity in Older Adults With Cancer in a Developing Country

An interventional study of Remote monitoring using smartphone accelerometer in Cancer, sponsored by Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran. Completed at 1 site in Mexico. Open to participants aged 65 Years and older. Per ClinicalTrials.gov, last updated 2023-10-06.

Sponsored by Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
116
Allocation
Not applicable
Ages
65 Years and older
Sex
All
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Study summary

Patients with cancer in developing countries face considerable challenges in obtaining access to care due to a lack of human resources and infrastructure. This is particularly pressing for vulnerable populations such as older adults. In this setting, many patients receiving chemotherapy are unable to report the presence of toxicities, and adverse events can go unnoticed for considerable amounts of time. The goal of this study is to assess the accuracy of an objective patient-centered measure of physical function (the number of steps taken per day measured using an accelerometer-equipped smartphone) for the remote detection of chemotherapy toxicity in older adults. This study builds on a pilot trial showing that monitoring older patients remotely utilizing an accelerometer-equipped smartphone is feasible and acceptable, and that a decline in the number of steps detected using the device can be an early sign of chemotherapy toxicity. The hypothesis of this study is that a decline in the number daily steps from a prechemotherapy baseline, measured using an accelerometer-equipped smartphone, will be accurate for detecting chemotherapy toxicity in older adults with cancer. This study will evaluate the ability of a patient-centered measure (a decline in the number of daily steps compared with a pre-chemotherapy baseline) to identify the presence of clinically-significant chemotherapy-related toxicity in Mexican older adults with cancer starting first line chemotherapy. Patients will be provided with an accelerometer-equipped smartphone with an installed pedometer application. Baseline steps per day will be obtained and recorded before starting chemotherapy. The patients' steps will be monitored daily for the first three chemotherapy cycles and compared with baseline recordings. Patients will be contacted daily and chemotherapy toxicity will be assessed by a physician. If significant toxicities are identified, the patient will be prompted to seek medical attention. The optimal cutoff point for detecting chemotherapy toxicity utilizing a decline in the number of daily steps will be chosen and validated. The adherence and satisfaction with the intervention will also be evaluated. This study could improve current methods and transform the way in which cancer care is delivered by demonstrating that a simple patient-centered measure obtained using a commercially available smartphone can aid in the accurate identification of clinically significant toxicities among a vulnerable population such as older adults with cancer.

02

Conditions studied

  • Cancer

Keywords

  • Older adults
  • Smartphones
  • eHealth
  • mHealth
  • Remote monitoring
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In context

Lead sponsor

Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran is the lead sponsor of 141 studies on the registry; 17 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
65 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • ≥65 years old
  • Any solid tumor
  • Starting first-line chemotherapy
  • Adjuvant, metastatic or recurrent setting
  • Any socioeconomic and educational level

Exclusion criteria

Exclusion Criteria:

  • Patients with walking disability
  • Bedridden patients (ECOG 3)
  • Second or subsequent line of chemotherapy
  • Inpatients
  • Patients receiving radiation concomitantly with chemotherapy
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Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
116 participants (actual)

Study arms

  • Experimental
    Remote monitoring using Smartphone

    Patients will be provided with a Global System for Mobile communications (GSM) accelerometer-equipped Android smartphone (specific model to be decided) with an installed open source, freely available pedometer application (Google Fit, Google, CA, United States) which will record their daily steps. Patients will receive daily calls from a research assistant to document the presence of clinically significant chemotherapy-related toxicity.

    Behavioral: Remote monitoring using smartphone accelerometer

Interventions

  • BehavioralRemote monitoring using smartphone accelerometer

    Patients will be instructed to carry the smartphone around their hips during waking hours, regardless of whether they are at home or outside (a nylon hip holster will be provided) and to keep it turned on at all times. Daily steps will be recorded for at least seven days before the start of chemotherapy, and the median baseline number of daily steps will be calculated for each patient. On the first day of chemotherapy, patients will receive side effect education as per standard of care. Patients will be instructed to continue carrying the smartphone daily as indicated for the entire duration of the first three chemotherapy cycles. At the end of the follow-up period (or sooner in cases of early interruption of chemotherapy due to toxicity or disease progression; a change in chemotherapy regimen; or hospitalizations lasting ≥3 days), patients will rate their satisfaction with the intervention using a Likert-scale questionnaire and open-ended questions.

06

What researchers measure

Primary outcomes

  1. Accuracy

    We will determine the diagnostic accuracy of percent decline in daily steps (index test) for detecting patient (pt) reported chemotherapy (CT) toxicity (Tox) (reference standard) using the area under the curve (AUC) of the receiver operating characteristic (ROC) curve.

    Time frame: Three months

Secondary outcomes

  1. Adherence

    Ratio of the number of days steps are uploaded (X) to the number of days (N) the pt was asked to carry the phone, reported as a percentage (X/N x100).

    Time frame: Three months

  2. Patient Satisfaction

    Percentage of pts reporting a high satisfaction with their experience carrying the smartphone

    Time frame: Three months

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Study locations

1 site
  • Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán
    Mexico City, Tlalpan 14080, Mexico
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 6, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04040881
Lead sponsor
Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran
Collaborators
Conquer Cancer Foundation
Responsible party
Sponsor
First posted
Aug 1, 2019
Start date
Aug 14, 2019
Primary completion
Dec 14, 2022
Completion
Dec 14, 2022
Last update
Oct 6, 2023

Study contacts

Enrique Soto Pérez de Celis, MD,MSc
principal investigator · Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.

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