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CompletedNCT04989595MyIUSUpdated Mar 6, 2025

A Study to Learn More About How a Smartphone App Called MyIUS Predicts Future Menstrual Bleeding in Women After They Have Begun Using Intrauterine Birth Control Method (a Birth Control Device is Inserted Into a Woman's Uterus by Her Doctor)

An observational study in Uterine Bleeding Profile Prediction, sponsored by Bayer. Completed at 6 sites in 6 countries. Open to female participants, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-03-06.

Sponsored by Bayer · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
3,045
Sex
Female
01

Study summary

Researchers are looking to learn more about future menstrual bleeding in women who have started using intrauterine contraception methods. "Intrauterine contraception" means that a device is inserted into a woman's uterus by her doctor. The device then releases a birth control treatment into the uterus.

Researchers have found that when women use intrauterine contraception, its effects on the menstrual cycle can cause changes to how often and for how long women will bleed. This is one of reasons women may stop using their intrauterine contraception.

So, the researchers in this study wanted to learn about a tool that can be used to predict future bleeding events. This tool was developed based on the results of previous clinical studies that researched menstrual bleeding. This tool is a smartphone application called MyIUS.

This study will include about 3,000 women who have recently had intrauterine contraception inserted and who use the MyIUS app.

There will be no visits with a study doctor in this study. After the intrauterine contraception has been inserted, the women will start to record any events of bleeding in the MyIUS app. After they have recorded events of bleeding for a total of 90 days, the MyIUS app will give a prediction of menstrual bleeding expected for the next 180 days. The women who sign the electronic informed consent form will continue to record their bleeding events for a total of 6 months.

The researchers will then collect this information. They will use this information to find out how well the MyIUS app can predict future menstrual bleeding.

Read the detailed description

The aim of this study is to demonstrate that the bleeding prediction algorithm which was developed and validated based on clinical trial data also works in a real-world setting.

02

Conditions studied

  • Uterine Bleeding Profile Prediction

Keywords

  • Prevention of pregnancy
03

In context

Uterine Hemorrhage

156 studies on the registry are indexed under Uterine Hemorrhage; 19 are open to participants now.

This study's enrollment of 3,045 is above the median of 121 across 40 observational studies indexed under Uterine Hemorrhage.

Browse Uterine Hemorrhage studies →

Lead sponsor

Bayer is the lead sponsor of 1,643 studies on the registry; 57 are open to participants now.

Of its 209 completed or terminated interventional studies of FDA-regulated products, 129 (62%) have results posted.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
Female
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Women (of legal age to provide electronic informed consent (eIC)) after insertion of Kyleena, Jaydess, or Mirena who use medical device software (MyIUS app) for bleeding profile prediction at day 90.

Inclusion criteria

  • Insertion of Kyleena, Jaydess, or Mirena IUS
  • Female (of legal age to provide electronic informed consent (eIC)) using the MyIUS app
  • Submitted eIC to use all data documented in the MyIUS app

Exclusion criteria

Exclusion Criteria:

  • None
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
3,045 participants (actual)
Patient registry
No

Groups and cohorts

  • Women_Kyleena

    Device: MyIUS app

  • Women_Jaydess

    Device: MyIUS app

  • Women_Mirena

    Device: MyIUS app

Interventions

  • DeviceMyIUS app

    Data will be self-reported by participants through the MyIUS app.

06

What researchers measure

Primary outcomes

  1. Accuracy of the bleeding intensity prediction algorithm in predicting one out of three intensity clusters

    Intensity clusters: bleeding, spotting, none

    Time frame: Up to 270 days

Secondary outcomes

  1. Accuracy of the menstrual cycle regularity prediction algorithm

    Time frame: Up to 270 days

  2. Difference in accuracy of the original prediction algorithm compared to the adapted algorithm on the collected real-world data

    Time frame: Up to 270 days

07

Study locations

6 sites
  • Many Locations
    Many Locations, Brazil
  • Many Locations
    Many Locations, Denmark
  • Many Locations
    Many Locations, Germany
  • Many Locations
    Many Locations, Mexico
  • Many Locations
    Many Locations, Spain
  • Many Locations
    Many Locations, Sweden
08

References and documents

Individual participant data

Plan to share: No — Availability of this study's data will later be determined according to Bayer's commitment to the EFPIA/PhRMA "Principles for responsible clinical trial data sharing". This pertains to scope, timepoint and process of data access. As such, Bayer commits to sharing upon request from qualified researchers patient-level clinical trial data, study-level clinical trial data, and protocols from clinical trials in patients for medicines and indications approved in the US and EU as necessary for conducting legitimate research. This applies to data on new medicines and indications that have been approved by the EU and US regulatory agencies on or after January 01, 2014. Interested researchers can use www.clinicalstudydatarequest.com to request access to anonymized patient-level data and supporting documents from clinical studies to conduct research. Information on the Bayer criteria for listing studies and other relevant information is provided in the Study sponsors section of the portal.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 6, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04989595
Lead sponsor
Bayer
Responsible party
Sponsor
First posted
Aug 4, 2021
Start date
Sep 17, 2021
Primary completion
Jan 6, 2024
Completion
Feb 27, 2024
Last update
Mar 6, 2025

Oversight

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

Not currently enrolling

This study is completed, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.

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