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Not yet recruitingNCT07815639COMFORTUpdated Sep 11, 2026

Feasibility of the COMFORT (COmplex Symptom Management Intervention FOR adulTs With Advanced Kidney Disease) Intervention for Adults With Advanced Kidney Disease and Their Informal Caregivers

An interventional study of COMFORT Intervention and Usual Care in Chronic Kidney Disease (Stages 4 and 5), sponsored by University of Aarhus. Not yet recruiting at 2 sites in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-11.

Sponsored by University of Aarhus · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
112
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 116 studies in Renal Insufficiency, Chronic with a site in Denmark — 27 open to participants now, 35 under way, 9 of them phase 3. Renal Insufficiency, Chronic · Denmark.

Planned enrollment
49th of 90
112 · median 136
Started
2026
with 7 others
No phase
27 of 116
7 open now
Primary completion
2027-02
later than 16 of 34 live
Registered
114th of 116
by date
Lead sponsor
6 of 116
University of Aarhus

Among the 116 studies in Renal Insufficiency, Chronic with a site in Denmark, this one is the 49th largest by planned enrollment of the 90 interventional ones, is one of 8 that started in 2026, is one of 27 with no phase, reaches primary completion later than 16 of the 34 other live ones, and was the 114th registered.

By phase

116 studies; the count open now beside each. This study's row is marked.

Phase 331 · 4 open
No phasethis study27 · 7 open
Observational26 · 9 open
Phase 222 · 3 open
Phase 48 · 4 open
Phase 1/21 · 0 open
Phase 2/31 · 0 open

By the year they started

First in 2002; this study’s year is marked. 8 started in 2026.

Size and results

Median enrollment 136 across the 90 interventional studies, 321 across the 26 observational. Of the 73 that completed or were terminated, 28 (38%) have results posted.

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02

Study summary

The purpose of this randomized feasibility study is to examine whether the COMFORT intervention is feasible and acceptable for adults with advanced kidney disease and their informal caregivers.

People with advanced kidney disease often experience several symptoms, such as fatigue, itching, pain, and sleep-related problems. These symptoms can affect daily life and quality of life and may also place a burden on family members and other informal caregivers. The COMFORT intervention is a nurse-led programme designed to help patients and their informal caregivers recognise and manage symptoms.

A total of 56 adults with advanced kidney disease will be randomly assigned to one of two groups. One group will receive usual care. The other group will receive usual care plus the COMFORT intervention over approximately 3 months. The intervention includes systematic assessment of symptoms, a symptom management decision-support tool, shared decision-making, support for self-management, and involvement and support of informal caregivers. It is delivered by trained nephrology nurses through two structured consultations and one follow-up telephone consultation.

The study will examine whether patients can be successfully recruited and retained, whether the intervention can be delivered as planned, whether patients, informal caregivers, and nurses find the intervention acceptable, and whether the study procedures and questionnaires are suitable for use in a future larger trial. The study is not designed to determine whether the COMFORT intervention is clinically effective.

Read the detailed description

Adults with advanced kidney disease may experience a substantial burden of physical and psychosocial symptoms, including fatigue, drowsiness, pruritus, pain, and restless legs. Multiple symptoms frequently occur at the same time and can negatively affect daily functioning, quality of life, and participation in everyday activities. Informal caregivers may also experience considerable burden, emotional strain, and uncertainty about how best to support the person with advanced kidney disease.

Despite the high symptom burden, systematic symptom assessment and management are not consistently integrated into routine kidney care. Symptom management strategies may focus on individual symptoms rather than addressing multiple co-occurring symptoms and the broader needs and preferences of patients and their informal caregivers. Patients and caregivers may therefore benefit from a more structured approach that supports symptom recognition and management, shared decision-making, self-management, and caregiver involvement.

The COMFORT Nursing Programme was established in 2023 to address these challenges. The programme has developed a structured, theory-informed, nurse-led intervention for symptom management in adults with advanced kidney disease. The COMFORT intervention comprises four core components: symptom management, shared decision-making, self-management support, and caregiver support.

The intervention combines systematic symptom assessment using the Integrated Palliative care Outcome Scale-Renal (IPOS-Renal) with an evidence-based symptom management decision-support tool. Based on the symptoms, needs, and preferences identified by the participant, trained nephrology nurses support participants in prioritising symptoms, considering relevant symptom management strategies, participating in shared decisions, and strengthening their ability to manage symptoms in everyday life. Informal caregivers are involved and supported as part of the intervention.

In this randomized feasibility study, adults with advanced kidney disease are allocated in a 1:1 ratio to usual care or usual care supplemented with the COMFORT intervention. The intervention is delivered over approximately 3 months and comprises two structured nurse-led consultations and one follow-up telephone consultation.

The primary purpose of the study is to evaluate the feasibility and acceptability of the COMFORT intervention and the procedures required for a future definitive randomised controlled trial. The study will therefore evaluate recruitment and retention, intervention fidelity, acceptability among participants and nephrology nurses, completion and suitability of proposed outcome measures, and the feasibility of study procedures. Patient-reported and caregiver-reported measures will also be collected to evaluate their suitability for a future trial.

The feasibility findings will be used to refine the COMFORT intervention and study procedures and to inform the design and conduct of a future multicentre randomised controlled trial evaluating the effectiveness of the COMFORT intervention.

03

Conditions studied

  • Chronic Kidney Disease (Stages 4 and 5)

Keywords

  • Advanced Kidney Disease
  • Chronic Kidney Disease Stage 5
  • Chronic Kidney Disease Stage 4
  • Kidney Failure
  • Symptom Management
  • Nurse-Led Intervention
  • Self-Management
  • Shared Decision-Making
  • Informal Caregivers
  • Supportive CAre
  • COMFORT intervention
  • Feasibility Study
04

Who can participate

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

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Patients:

  • Age 18 years or older
  • Advanced kidney disease
  • At least one symptom with a score ≥2 on the Integrated Palliative care Outcome Scale-Renal (IPOS-Renal)
  • Receiving haemodialysis, peritoneal dialysis, conservative kidney management, or predialysis care
  • Able to provide

Informal caregivers:

  • Age 18 years or older
  • Identified by a participating patient as an informal caregiver or close relative
  • Able to provide informed consent

Exclusion criteria

Exclusion Criteria:

Patients:

  • Unable to speak or read Danish
  • Unable to provide
  • Unable to complete study questionnaires
  • Severe psychiatric disorder

Informal caregivers:

  • Unable to speak Danish
  • Unable to complete study questionnaires
  • Unable to provide informed consent
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
112 participants (estimated)

Study arms

  • Active comparator
    Usual Care

    Participants allocated to the control group receive usual kidney care according to standard clinical practice at the participating nephrology departments during the 3 months study period.

    Other: Usual Care

  • Experimental
    COMFORT Intervention

    Participants allocated to the intervention group receive usual kidney care supplemented with the COMFORT intervention during the 3 months study period. The COMFORT intervention is a tailored, nurse-led symptom management intervention that includes systematic symptom assessment, a symptom management decision-support tool, shared decision-making, self-management support, and involvement and support of informal caregivers. The intervention is delivered by trained nephrology nurses through two structured consultations and one follow-up telephone consultation.

    Behavioral: COMFORT Intervention

Interventions

  • BehavioralCOMFORT Intervention

    The COMFORT intervention is a tailored, nurse-led symptom management intervention for adults with advanced kidney disease and their informal caregivers. It includes systematic symptom assessment using the Integrated Palliative care Outcome Scale-Renal (IPOS-Renal), an evidence-based symptom management decision-support tool, shared decision-making, self-management support, and caregiver involvement and support. The intervention is delivered by trained nephrology nurses over 12 weeks through two structured consultations and one follow-up telephone consultation, in addition to usual kidney care.

  • OtherUsual Care

    Participants receive usual kidney care according to standard clinical practice at the participating nephrology departments during the 12-week study period. Participants in this arm do not receive the COMFORT intervention.

06

What researchers measure

Primary outcomes

  1. Recruitment Rate

    Percentage of eligible patients approached for participation who provide informed consent and are enrolled in the feasibility study. The recruitment rate will be calculated as the number of enrolled patients divided by the number of eligible patients approached, multiplied by 100.

    Time frame: Baseline and 3 months

  2. Participant Retention Rate at 3 Months

    Percentage of enrolled patients who remain in the feasibility study and complete the 3-month follow-up assessment. The retention rate will be calculated as the number of enrolled patients completing the 3-month follow-up divided by the total number of enrolled patients, multiplied by 100.

    Time frame: 3 months after enrolment

  3. Adherence to the COMFORT Intervention

    Percentage of planned COMFORT intervention sessions attended by participants allocated to the intervention group. Adherence will be calculated as the number of intervention sessions attended divided by the number of planned intervention sessions, multiplied by 100. Scores range from 0% to 100%, with higher percentages indicating greater adherence.

    Time frame: Baseline and 3 months

  4. Fidelity to the COMFORT Intervention

    Percentage of prespecified COMFORT intervention components delivered as planned, assessed using session logs completed by the nephrology nurses delivering the intervention. Fidelity will be calculated as the number of intervention components delivered as planned divided by the number of applicable prespecified components, multiplied by 100. Scores range from 0% to 100%, with higher percentages indicating greater intervention fidelity.

    Time frame: Baseline and 3 months

  5. Completeness of Questionnaire Data

    Percentage of expected questionnaire data that are completed at the planned assessment time points. Data completeness will be calculated as the number of completed questionnaire data fields divided by the total number of expected questionnaire data fields, multiplied by 100. Scores range from 0% to 100%, with higher percentages indicating greater data completeness.

    Time frame: Baseline and 3 months

  6. Acceptability of the COMFORT Intervention Assessed by Qualitative Interviews

    Acceptability of the COMFORT intervention will be explored through qualitative interviews with participating patients, informal caregivers, and nephrology nurses. Interview data will be analysed qualitatively to identify themes specifically related to experiences of and acceptability of the intervention.

    Time frame: At 3 months

  7. Perceived Relevance of the COMFORT Intervention Assessed by Qualitative Interviews

    Perceived relevance of the COMFORT intervention will be explored through qualitative interviews with participating patients and informal caregivers. Interview data will be analysed qualitatively to identify themes specifically related to the perceived relevance of the intervention.

    Time frame: At 3 months

  8. Perceived Feasibility of the COMFORT Intervention Assessed by Qualitative Interviews

    Perceived feasibility of the COMFORT intervention will be explored through qualitative interviews with participating patients, informal caregivers, and nephrology nurses. Interview data will be analysed qualitatively to identify themes specifically related to the practical feasibility of the intervention.

    Time frame: At 3 months

Secondary outcomes

  1. Change From Baseline in Symptom Burden Assessed With the Integrated Palliative care Outcome Scale-Renal at 3 Months

    Symptom burden will be assessed using the Integrated Palliative care Outcome Scale-Renal (IPOS-Renal). The IPOS-Renal total score ranges from 0 to 90, with higher scores indicating greater symptom burden and other health-related concerns. The outcome will be the change in total score from baseline to 3 months.

    Time frame: Baseline and 3 months

  2. Change From Baseline in EuroQol 5-Dimension 3-Level Index Score at 3 Months

    Health-related quality of life will be assessed using the EuroQol 5-Dimension 3-Level (EQ-5D-3L) questionnaire. Health states will be converted to an EQ-5D-3L index score using the Danish time trade-off value set. Index scores range from -0.624 to 1.000, with higher scores indicating better health-related quality of life. The outcome will be the change in index score from baseline to 3 months.

    Time frame: Baseline and 3 months.

  3. Change From Baseline in Fatigue Severity Scale Score at 3 Months

    Fatigue will be assessed using the 9-item Fatigue Severity Scale (FSS). The total score ranges from 9 to 63, with higher scores indicating greater fatigue severity. The outcome will be the change in total score from baseline to 3 months.

    Time frame: Baseline and 3 months.

  4. Change From Baseline in Life Participation Assessed With Standardised Outcomes in Nephrology-Life Participation at 3 Months

    Life participation will be assessed using the Standardised Outcomes in Nephrology-Life Participation (SONG-LP) instrument. The overall score ranges from 0 to 4 and is calculated as the mean of the available item scores. Higher scores indicate better life participation. The outcome will be the change in overall score from baseline to 3 months.

    Time frame: Baseline and 3 months.

  5. Change From Baseline in Shared Decision-Making Assessed With the Patient Experience of Shared Decision Making Questionnaire at 3 Months

    Shared decision-making will be assessed using the Danish version of the 10-item Patient Experience of Shared Decision Making Questionnaire (SHARED-10). Each item is rated on a 5-point Likert scale from strongly disagree to strongly agree, with higher item scores indicating greater perceived shared decision-making. The instrument assesses three domains: healthcare professional contribution (items 1-4), patient contribution (items 5-7), and shared agreement in the decision (items 8-10). Change from baseline to 3 months will be assessed.

    Time frame: Baseline and 3 months

  6. Change From Baseline in Self-Management Assessed With the Chronic Kidney Disease Self-Management Questionnaire at 3 Months

    Self-management will be assessed using the 17-item short version of the Chronic Kidney Disease Self-Management questionnaire (CKD-SM-17). Each item is rated on a 4-point response scale from never to always. Item scores range from 1 to 4, giving a total score ranging from 17 to 68, with higher scores indicating greater engagement in self-management behaviours. The outcome will be the change in total score from baseline to 3 months.

    Time frame: Baseline and 3 months

  7. Change From Baseline in Caregiver Burden Assessed With the 12-Item Zarit Burden Interview at 3 Months

    Caregiver burden will be assessed among participating informal caregivers using the 12-item Zarit Burden Interview (ZBI-12). The total score ranges from 0 to 48, with higher scores indicating greater caregiver burden. The outcome will be the change in total score from baseline to 3 months.

    Time frame: Baseline to 3 months

07

Study locations

2 sites
08

References and documents

Publications

  • Finderup J, Agerskov H, Deele M, Frandsen CE, Kristensen IV, Bonner A, Konradsen H. Tailored Complex Symptom Management Intervention for Adults with Advanced Kidney Disease and Their Informal Caregivers: Protocol for the COMFORT Research Program. Nephron. 2026;150(2):65-75. doi: 10.1159/000548903. Epub 2025 Oct 13. PubMed 41078064 ↗

Related links

Individual participant data

Plan to share: No — Individual participant data are not planned to be shared with other researchers. Study data will be handled in accordance with applicable data protection regulations and institutional requirements.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Feb 2027, 5 months later.

Of 576 non-industry interventional studies with no phase under Renal Insufficiency, Chronic, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 45. This study's planned 5 months is below that.

Counting every sponsor, half of 616 studies reached it within 23 months; a quarter within 10 and three quarters within 45.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 31, 2026
First posted
Sep 11, 2026
StartEst.
Sep 15, 2026
Primary completionEst.
Feb 2027
CompletionEst.
Feb 2027
Last update
Sep 11, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 11, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07815639
Responsible party
Sponsor
First posted
Sep 11, 2026
Start date
Sep 15, 2026 (estimated)
Primary completion
Feb 2027 (estimated)
Completion
Feb 2027 (estimated)
Last update
Sep 11, 2026

Study contacts

Jeanette Finderup
Contact
jeajee@rm.dk
004578452525

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 not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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