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CompletedNCT05951140PROTEINUpdated May 7, 2026

Personalised Nutrition for Healthy Living

An interventional study of Usage of the PROTEIN-Application in Diabetes Mellitus, Type 2 and PreDiabetes, sponsored by Prof. Dr. med. Andreas F. H. Pfeiffer. Completed at 1 site in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-07.

Sponsored by Prof. Dr. med. Andreas F. H. Pfeiffer · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 2 years 7 months after the study started (first participant enrolled Oct 2020, registered May 2023).
Phase
Not applicable
Study type
Interventional
Enrollment
27
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The topic of diet and physical activity are of great importance in the treatment of T2D. In the daily routine of a practice or clinic, a doctor has an average of eight minutes per patient, leaving little time for lifestyle issues (Irving et al. 2017). An individualised procedure requires more time and therefore more resources. Currently, an app can be programmed with evidence-based information so that it provides appropriate personalised behavioural recommendations via machine learning. The user gets direct feedback and can make a behavioural change himself. On the one hand, this approach allows better use of doctor-patient time and, on the other hand, the patient learns through positive reinforcement in such a way that his or her behaviour change is supported and reinforced in the longer term and potentially sustainably.

The aim of this intervention pilot study within the scope of the EU-Horizon 2020 project is to investigate lifestyle support through a mobile app and wearables to improve lifestyle (personalised nutrition) and important metabolic outcomes in patients with type 2 diabetes or prediabetes. In addition, exploratory genetic and microbiome data will be explored to answer the question of personalisation of the recommendations.

Read the detailed description

An inadequate diet and increasing sedentary lifestyle are major contributors to the rise of non-communicable diseases. Individualized recommendations can lead to a healthier lifestyle. The scientific evidence of the effectiveness of health apps offering personalized recommendations is limited.

The aim of this intervention pilot study within the scope of the EU-Horizon 2020 project is to investigate lifestyle support through a mobile app and wearables to improve lifestyle (personalised nutrition) and important metabolic outcomes in patients with type 2 diabetes or prediabetes. The Investigators want to asess whether the use of this mobile application that incorporates information of wearables (continuous glucose monitoring and fitness tracker), improves lifestyle and metabolic outcomes in patients with type 2 diabetes (T2D) or prediabetes. Our primary outcome is to improve time in range (TIR) by 5%.

It is a prospective randomized control pilot trial with an intervention period of 12 weeks. Participants will use the Protein app, a continuous glucose monitoring system (CGM) and an activity tracker to collect real world data to enable personalisation.

In order to identify the effect of the PROTEIN-Application, 300 participants with T2DM or prediabetes will be randomly allocated into two groups: the (1) start-group or the (2) wait-group. The start-group will use an activity tracker, a CGM and the PROTEIN app for 12 weeks followed by a six-week period without the app, but they will use the wearables. The wait-group will use an activity tracker and a CGM, but not the PROTEIN app for six weeks followed by a period of 12 weeks using the PROTEIN app. This study design allowed us to have a control group within the whole cohort and clearly see the influence of the PROTEIN app.

02

Conditions studied

  • Diabetes Mellitus, Type 2
  • PreDiabetes
03

In context

Diabetes Mellitus, Type 2

9,359 studies on the registry are indexed under Diabetes Mellitus, Type 2; 1,318 are open to participants now.

This study's enrollment of 27 is below the median of 80 across 7,525 interventional studies indexed under Diabetes Mellitus, Type 2.

Browse Diabetes Mellitus, Type 2 studies →

Lead sponsor

This is the only study on the registry with Prof. Dr. med. Andreas F. H. Pfeiffer as lead sponsor.

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

04

Who can participate

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

Inclusion criteria

  • ≥ 18 years of age
  • Diabetes Type 2 or Prediabetes
  • BMI: 20-kg kg/m2
  • Android Smart Phone/ Tablet use
  • In good physical health
  • Able to provide written informed consent

Exclusion criteria

Exclusion Criteria:

  • Severe endocrine, gastrointestinal, metabolic, cardiovascular, pulmonary, inflammatory or psychiatric disorder
  • Active or recent relevant cancer
  • Currently receiving treatment with Insulin
  • People with disordered eating (such as anorexia nervosa etc.)
  • Those who are not be able to provide written consent
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
27 participants (actual)

Study arms

  • Experimental
    Start-Group

    The Start-Group starts with the Protein-Application and wereables for 3 Months and afterwards uses only wereables for 6 Weeks.

    Other: Usage of the PROTEIN-Application

  • Experimental
    Wait-Group

    The Wait-Group starts with 6 Weeks of using only wereables and afterwards adds the usage of the Protein-Application.

    Other: Usage of the PROTEIN-Application

Interventions

  • OtherUsage of the PROTEIN-Application

    Participants were randomly distributed into 2 groups: (1) Start-Group used the developed Application and wereables to investigate the effect of this support. Participants used the devices and the App for 3 Months followed by a 6-Weeks time of only using wereables and no app, to be able to compare the effects of the Application. (2) The Wait-Group used wereables for 6 Weeks before adding the Protein-App for also 3 Months.

06

What researchers measure

Primary outcomes

  1. Improvement of Time In Range (TIR) by 5%

    Our primary objective is to increase the time in range (TIR) of the study participants by 5%

    Time frame: 12 Weeks

  2. Improve eating behavior towards healthier choices

    Improve eating behaviour towards healthier choices during the intervention time

    Time frame: 12 Weeks

Secondary outcomes

  1. Adherence to dietary recommendations of the app

    Adherence to dietary recommendations of the PROTEIN-App

    Time frame: 12 Weeks

  2. Improvement of glycaemic metabolism

    Fasting glucose, HbA1c, HOMA-IR

    Time frame: 12 Weeks

  3. Reduction in sedentary time

    Reduction in sedentary time, defined as: Activity time through fitness trackers or increase in physical activity or increase in steps per day

    Time frame: 12 Weeks

  4. Aproximation of the energy intake

    Approximation of the energy intake (calorie intake and distribution of macronutrients) towards the agreed goals

    Time frame: 12 Weeks

  5. Measurable change in the faecal microbiome

    Measurable change in the faecal microbiome by extraction of DNA and its analysis to identify the relevant species of bacteria

    Time frame: 12 Weeks

  6. Calculation of the Polygenic Risk Score

    Calculation of the Polygenic Risk Score by Isolation of DNA from whole blood

    Time frame: 12 Weeks

07

Study locations

1 site
  • Charité Univesitätsmedizin Berlin
    Berlin, State of Berlin 12203, Germany
08

References and documents

Publications

  • Lalama E, Csanalosi M, Kabisch S, Wilson-Barnes S, Gymnopoulos LP, Dimitropoulos K, Rouskas K, Anagnostis A, Oikonomidis I, Hadjileontiadis L, Cornelissen V, Hassapidou M, Pagkalos I, Balula Dias S, Hart K, Pfeiffer AFH. Effect of a Personalized Mobile App on Glucose Control in Adults With Prediabetes and Type 2 Diabetes: Exploratory Pilot Randomized Controlled Trial. JMIR Hum Factors. 2026 Jun 24;13:e87692. doi: 10.2196/87692. PubMed 42342244 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 7, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05951140
Lead sponsor
Prof. Dr. med. Andreas F. H. Pfeiffer
Collaborators
European Union
Responsible party
Prof. Dr. med. Andreas F. H. Pfeiffer (Principal Investigator, Univ. Prof. Dr. med., Charite University, Berlin, Germany) — Sponsor-investigator
First posted
Jul 18, 2023
Start date
Oct 1, 2020
Primary completion
Nov 30, 2022
Completion
Nov 30, 2022
Last update
May 7, 2026

Study contacts

Lazaros Gymnopoulos, Dr
study director · Information Technologies Institute, Centre for Research and Technology Hellas

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 Jul 2023. You cannot join it, but the record below documents what was studied.

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