App aims to get cancer survivors moving – but trial stopped early

NCT ID NCT03953326

Terminated Symptom relief Sponsor: Penn State University Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a smartphone app called HeartPhone that appears on the lock screen to encourage physical activity in breast cancer, leukemia, and lymphoma survivors. Participants used the app for 3 months and wore a Fitbit to track activity. The goal was to see if the app could increase exercise and improve blood vessel health. However, the trial was terminated early with only 2 participants enrolled, so results are very limited.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: HeartPhone app (behavioral intervention)
What this could lead to: If it worked, this app could help cancer survivors become more active and improve their heart health.
What could go wrong: The trial was terminated early with only 2 participants, so we have very little data. It is unclear if the app is effective or safe for wider use.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for BREAST CANCER are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm leukemia lymphoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

BREAST CANCER LEUKEMIA LYMPHOMA

Contacts and locations

Locations

The Pennsylvania State University

University Park, Pennsylvania, 16802, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.