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CompletedNCT05897047smartNTxUpdated Sep 1, 2026

The smartNTx Trial:Telemedical Management Versus Standard Aftercare in Kidney Transplant Recipients (KTR)

An interventional study of Additional interventional telemedical management in Kidney Transplant Rejection and Kidney Transplant Failure, sponsored by University of Erlangen-Nürnberg Medical School. Completed at 2 sites in Germany. Open to participants aged 1 Year to 99 Years. Per ClinicalTrials.gov, last updated 2026-09-01.

Sponsored by University of Erlangen-Nürnberg Medical School · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
391
Allocation
Randomized
Ages
1 Year to 99 Years
Sex
All
01

Study summary

The smartNTx trial: Prospective, randomized controlled trial (RCT) to investigate additional interventional telemedical management versus standard aftercare in kidney transplant recipients (KTR).

STUDY PURPOSE: To demonstrate that additional interventional telemedical management will lead to a higher chance for long-term graft survival, increase adherence, quality of life (QoL), and reduce complications and healthcare costs after kidney transplantation.

Read the detailed description

This is a 1-year, prospective, randomized, 2-armed, parallel group multicenter trial in 3 German Kidney Transplant Centers (KTCs) to demonstrate that additional and continuous interventional telemedical management will lead to a better composite endpoint of 7 key outcome variables (hospitalizations, length of hospitalization, development of a de-novo donor specific antibody (DSA), medication adherence, tacrolimus intra-patient variability, blood pressure control and renal function after kidney transplantation). All patients will receive the same routine posttransplant aftercare. Patients in the interventional arm will receive a predefined additional telemedical management including regular telemedicine visits and automatic data transfer (e.g. vital signs, well-being, medication plan laboratory data and chat) between the patient at home and KTC through a certified smartphone application (comjoo business solutions GmbH, Berlin, Germany). Furthermore, home nephrologists of patients in the interventional arm are invited to participate in automatic data transfer of key variables (such as vital signs, laboratory data) with KTC. A separate telemedicine team will constantly review the incoming data according to a predefined protocol and eventually contact the patient and/or the home nephrologist in order to start appropriate interventions.

02

Conditions studied

  • Kidney Transplant Rejection
  • Kidney Transplant Failure

Keywords

  • Aftercare
  • Telemedical Management
03

In context

Lead sponsor

University of Erlangen-Nürnberg Medical School is the lead sponsor of 267 studies on the registry; 51 are open to participants now.

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

04

Who can participate

Ages eligible
1 Year to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Kidney transplantation within last 12 months
  • Treatment with tacrolimus
  • Routine aftercare planned at KTC
  • Ability to use a smartphone or tablet or with help of someone close by
  • For children \< 12 years parents have to take over the use of the smartphone
  • Patients who are willing and able to participate in the study and from whom written informed consent has been obtained prior to study participation or pediatric patients with parenteral consent
  • Ability to communicate in German or English
  • Adequate and stable renal function (eGFR > 30 ml/min, Proteinuria \< 1g/g creatinine) eGFR will be determined according to CKD-EPI for adults [81] or Schwartz formula for children [82]

Exclusion criteria

Exclusion Criteria:

  • Patient with mental dysfunction or inability to comply with the study protocol or pediatric patients whose parents cannot comply with the study protocol
  • Any significant diseases or clinically significant findings, including psychiatric and behavioral problems, medical history and/or physical examination findings that would in the opinion of the investigator preclude the patient from participating in the study
  • History of alcohol or drug abuse with less than 6 months of sobriety
  • Participation in any other interventional clinical trial less than 1 month before participation in this study
  • Patients who have been institutionalized by official or court order
  • Patients with a combined kidney transplant or multi-organ recipients (other solid organ (e.g. pancreas) or bone marrow)
  • Presence of DSA with MFI > 1000 at time of transplantation
  • Recurrence of underlying kidney disease (e.g. focal segmental glomerulosclerosis (FSGS) or atypical hemolytic uremic syndrome (aHUS)
  • Patient with active malignancy post-transplant with the exception of local, non-invasive, fully excised, cutaneous basal cell carcinoma, cutaneous squamous cell carcinoma, or cervical carcinoma in situ
  • Patients with clinically symptomatic congestive heart failure (CHF) or symptomatic coronary artery disease
  • Patients with documented (either by serology and/or nuclear acid testing (NAT) clinically active infections (e.g. with a known hepatitis B (HBV), hepatitis C (HCV), HIV, CMV or BK virus infection).
05

Study design

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

Study arms

  • Experimental
    Intervention group "Additional telemedical management"

    Patients in the interventional arm will receive a predefined additional telemedical management including regular telemedicine visits and automatic data transfer (e.g. vital signs, well-being, medication plan laboratory data and chat) between the patient at home and KTC through a certified smartphone application.

    Combination Product: Additional interventional telemedical management

  • No intervention
    Control group "Routine posttransplant aftercare"

    Patients in the control group will receive routine posttransplant aftercare.

Interventions

  • Combination productAdditional interventional telemedical management

    Predefined additional telemedical management including regular telemedicine visits and automatic data transfer (e.g. vital signs, well-being, medication plan laboratory data and chat) between the patient at home and KTC through a certified smartphone application.

06

What researchers measure

Primary outcomes

  1. Medication adherence

    According to BAASIS questionnaire at month 12

    Time frame: 12 months

  2. Unplanned hospitalizations

    yes/no during study period

    Time frame: 12 months

  3. Length of unplanned hospitalization

    More/less than 10 nights during study period

    Time frame: 12 months

  4. Development of de-novo DSA

    yes/no at month 12

    Time frame: 12 months

  5. Tacrolimus intra-patient variability

    Above/below 30% between month 6 to 12

    Time frame: 12 months

  6. Blood pressure control

    normal/abnormal 24h-RR profile at month 12

    Time frame: 12 months

  7. Renal function

    suboptimal renal function (eGFR \< 45 ml/min at month 12

    Time frame: 12 months

Secondary outcomes

  1. Reduced graft losses (result evalution)

    Documentation of graft losses at all visits - Month 3, 6, 9, 12

    Time frame: 12 months

  2. Better prognosis of the iBox score (result evalution)

    Documentation of the prognosis of the AI during visit 5, month 12

    Time frame: 12 months

  3. Improvement in quality of life (result evalution)

    Change in quality of life over 12 months (PROMIS 29 questionnaire) at month 0, 3, 6, 9, 12 (visit 1 to 5).

    Time frame: 12 months

  4. Improving disease management (process evalution)

    Change in disease management over 12 months (PAM13 questionnaire) at month 0, 3, 6, 9, 12 (visit 1 to 5)

    Time frame: 12 months

  5. Acceptance of the new restoration among patients (process evalution)

    Survey using established questionnaires and rating and satisfaction with care (own development) at Visit 4, 5 (month 9; 12)

    Time frame: 12 months

  6. Acceptance of the new restoration among service providers (process evalution)

    Survey using established and newly developed questionnaires, as well as analyzes for usage behavior, including Grade and Assess Predictive tools. Benefit assessment of the data- and AI-supported Decision support (in-house development).

    Time frame: 12 months

07

Study locations

2 sites
  • Charité Universitätsmedizin Berlin
    Berlin, Bavaria 10117, Germany
  • University Hospital Essen
    Essen, Germany
08

References and documents

Publications

  • Schiffer M, Pape L, Wolff JK, Gertges R, Visconti V, Reichert K, Pfau A, Dieterle A, Sauerstein K, Kribben A, Boss K, Karaterzi S, Nensa F, Winneckens P, Cypko M, Duettmann W, Zukunft B, Schrezenmeier E, Naik MG, Halleck F, Roller R, Moller S, Amft O, Budde K. The SmartNTx-study: a prospective, randomized controlled trial to investigate additional interventional telemedical management versus standard aftercare in kidney transplant recipients. Front Nephrol. 2025 Jun 19;5:1591962. doi: 10.3389/fneph.2025.1591962. eCollection 2025. PubMed 40612527 ↗

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 Sep 1, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05897047
Lead sponsor
University of Erlangen-Nürnberg Medical School
Collaborators
Charite University, Berlin, Germany, University Hospital, Essen
Responsible party
Sponsor
First posted
Jun 9, 2023
Start date
May 15, 2023
Primary completion
Apr 30, 2026
Completion
Jul 30, 2026
Last update
Sep 1, 2026

Study contacts

Mario Schiffer, Prof. Dr.
principal investigator · Uniklinikum Erlangen

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 Aug 2026. You cannot join it, but the record below documents what was studied.

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