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NCT Number: NCT07234656

Patient-partnered Research in Investigating Fear of Cancer Recurrence in Kidney Cancer

The goal of this observational study is to gather real-world information about Fear of Cancer Recurrence (FCR) following surgery in patients with renal cell carcinoma (RCC) and their partners/spouses by 1) establishing a panel consisting of patients with or without partners/spouses to facilitate patient-partnered research. Furthermore, 2) Through discussions among panel members and researchers identification of the most pertinent topics related to FCR, as well as the optimal timing and methods for collecting that information in the follow-up care after surgery. Finally, to conduct a feasibility and pilot study to investigate the feasibility of the recommendations developed in 1) + 2) and assess FCR in patients with RCC following surgery and their partners/spouses.

In phase 1 participants (panel members) will be asked to collaborate with researchers in the development of recommendations for FCR questions, mode of administration and timing in the follow-up care after surgically treated kidney cancer.

In phase 2 participants (patients and partners) in follow-up care after surgically treated kidney cancer are asked to answer questions about FCR at specific timepoints defined by panel members and researchers in phase 1.

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Key information

About this study

Rationale Previously, Fear of Cancer Recurrence (FCR) has been investigated in patients with renal cell carcinoma (RCC) showing that FCR is the most common source of frustration, and the prevalence of FCR has been estimated to be 54% in patients with localized RCC.

Studies in families with cancer show that approximately 50% of family caregivers experience FCR.

Patient involvement in research is much requested, however, no study to date has involved patients and partners/spouses in the investigation of FCR in patients with kidney cancer and their family caregivers.

Therefore, in this study the investigators will ask patients with localized kidney cancer and their partners/spouses to contribute with their perspectives on what questions to ask in the follow-up care after surgery for kidney cancer to identify FCR. For this purpose, the validated 42-item Fear of Cancer Inventory (FCRI) will be used for inspiration. A caregiver version of the FCRI exists, but has not been translated to Danish and thus translation will be conducted in this study.

This study is expected to provide information to clinicians on how to comply with the European Association of Urology guideline that recommends psychological evaluation for all patients diagnosed with RCC and involvement of patients in adjuvant RCC treatment decisions. Furthermore, the investigators conduct this study to give patients with kidney cancer and partners/spouses a voice in the investigation of FCR in the clinical follow-up care after surgery. This provides an opportunity for a collaboration between patients, partners, patients associations and professional researchers to identify the most appropriate FCR questions, timing, and mode of administration to optimize patient adherence/compliance and treatment outcomes.

Method The project has two phases. Phase 1: Establishment of a patient/partner panel who in collaboration with researchers will use the 5-stage Design thinking model to develop recommendations for investigating FCR in patients and their partners/spouses in follow-up care after surgically treated kidney cancer.

The Reach, Effectiveness, Adoption, Implementation, Maintenance (RE-AIM) framework described by Glasgow et al. will be applied for the process evaluation of recruitment and eligibility of panelists.

The level of meaningful patient/partner/spouse engagement in the project will be evaluated using the Patient Engagement in Research Scale (PEIRS-22).

Phase 2:

The recommendations produced in phase 1 will be tested in a pilot and feasibility study along with investigation of additional factors possibly affecting fear of cancer recurrence in patients and their partners/spouses. All evaluations will be done statistically.

Perspectives If the phase 2 pilot-study turns out successfully in defining FCR in patients with RCC and their partners/spouses, the researchers will seek to perform a national follow-up study, that can constitute a foundation for implementation of FCR as part of standard clinical practice, e.g. detecting when FCR reaches a level that needs interference such as psychological counselling etc.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Phase 1:

  • Single patients diagnosed with Renal Cell Carcinoma (RCC) or patients with RCC being in an intimate relationship with a partner/spouse
  • Partner/spouse to patients who fullfil the inclusion criteria
  • Patients have undergone surgery due to localized RCC (T1-T2-T3 tumor)
  • Time since surgery: 0-120 months
  • Danish speaking patients and partners/spouses. Must be able to speak, write and read Danish
  • Patients/partners/spouses able to and willing to attend online project meetings or in person at Gødstrup Hospital.

Phase 2:

  • Single patients diagnosed with Renal Cell Carcinoma (RCC) or patients with RCC being in an intimate relationship with a partner/spouse
  • Partner/spouse to patients who fullfill the inclusion criteria
  • Patients who have undergone surgery due to localized RCC (T1-T2-T3 tumor)
  • Danish speaking patients and partners/spouses. Must be able to speak, write and read Danish
  • Able to receive digital communication from the hospital
  • Informed consent must be signed before answering Fear of Cancer Recurrence questions

Exclusion criteria

Both phases, both patients and partners/spouses:

  • Diagnosed with cognitive impairment
  • Untreated psychiatric disorders due to non-compliance

Phase 2:

  • Patients and partners/spouses who were panelists in phase 1

Treatment and study plan

Phase 1: Establishment of a patient-partner panel

Other

Phase 1: Establishment of a patient-partner panel who in collaboration with researchers define Fear of Cancer Recurrence questions, mode of administration and timing for investigating Fear of Cancer Recurrence in phase 2 (pilot testing in a feasibility study).

Phase 2: Feasibility testing of FCR questions, mode of administration and timing for investigating Fear of Cancer Recurrence

Other

As the intervention for phase 2 is a product of the collaboration and discussions between panel members and researchers during phase 1, the intervention can not be described more detailed.

Primary outcomes

  1. Phase 1: Assessment of the recruitment to and composition the patient-partner panel

    Time frame: From inclusion to week 16 or date of last subject included whichever comes first.

    The RE-AIM (Reach, Effectiveness, Adoption, Implementation, Maintenance) framework will be applied for the assessment of the recruitmentprocess, eligibility of panelists and their representativity.

  2. Phase 1: Assessment of the degree of patient and partner/spouse involvement

    Time frame: From inclusion to week 26 or end of engagement whichever comes first.

    The Patient Engagement in Research Scale (PEIRS) will be applied to assess the degree of meaningful patient and family caregiver engagement in research from a patient and partner/spouse perspective.

    The 22-item Patient Engagement in Research Scale (PEIRS) score ranges from 0-88. Minimum value per item: 0 (Strongly Disagree), maximum value per item: 4 (Strongly Agree). Higher scores = better engagement in research.

    To make interpretation easier, many studies convert the raw total to a 0-100 score calculated by taking the total sum score, divided by 88 (22 items X 4 scores), and multiplying it by 100

  3. Phase 2: To investigate whether the recommendations for timing, instructions, mode of administration and Fear of Cancer Recurrence questions stated in phase 1 are feasible in a clinical setting,

    Time frame: From inclusion to week 52.

    Patients' and partners/spouses' compliance to the investigation of Fear of Cancer Recurrence will be evaluated using descriptive statistics.

    Fulfillment of the feasibility criteria are met when 80% of the included subjects complete the pilot testing.

  4. Phase 2: The prevalence of Fear of Cancer Recurrence in single patients with localized Renal Cell Carcinoma

    Time frame: From inclusion to week 52 or when the subject withdraws from the study whichever comes first.

    Descriptive statistics will be used to present the level of Fear of Cancer Recurrence. Data will be presented as median Fear of Cancer Recurrence score with 95% Confidence Interval.

  5. Phase 2: The prevalence of Fear of Cancer Recurrence in patients with localized Renal Cell Carcinoma and living in a relationship with a partner/spouse.

    Time frame: From inclusion to week 52 or when the subject withdraws from the study whichever comes first.

    Descriptive statistics will be used to present the level of Fear of Cancer Recurrence. Data will be presented as median Fear of Cancer Recurrence score with 95% Confidence Interval.

  6. Phase 2: The prevalence of Fear of Cancer Recurrence in partners/spouses to patients with localized Renal Cell Carcinoma.

    Time frame: From inclusion to week 52 or when the subject withdraws from the study whichever comes first.

    Descriptive statistics will be used to present the level of Fear of Cancer Recurrence. Data will be presented as median Fear of Cancer Recurrence score with 95% Confidence Interval.

Secondary outcomes

  1. Phase 2: Associations between data on Fear of Cancer Recurrence and disease stage in single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analysis will be conducted to investigate associations between Fear of Cancer Recurrence and disease stage: Leibovich disease risk groups (low, medium, and high) .

    The Fear of Cancer Recurrence Inventory will be used to measure Fear of Cancer Recurrence (FCR). Higher score means higher FCR. The score range from 0-168.

  2. Phase 2: Associations between data on Fear of Cancer Recurrence and comorbidity burden in single patients.

    Time frame: From inclusion to the study to week 52 or when the subject withdraws consent whichever comes first.

    Logistic regression analysis will be conducted to investigate associations between Fear of Cancer Recurrence and Charlson Comorbidity Index score.

    The Fear of Cancer Inventory will be used to measure FCR. Higher score means higher FCR. The score ranges from 0-168.

  3. Phase 2: Associations between data on Fear of Cancer Recurrence and sex in single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  4. Phase 2: Associations between data on Fear of Cancer Recurrence and age in single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  5. Phase 2: Associations between data on Fear of Cancer Recurrence and educational level in single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  6. Phase 2: Associations between data on Fear of Cancer Recurrence and disease stage in patients with a partner/spouse.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  7. Phase 2: Associations between data on Fear of Cancer Recurrence and comorbidity burden in patients with a partner/spouse.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations between Fear of Cancer Recurrence score and Charlson Comorbidity Index score.

  8. Phase 2: Associations between data on Fear of Cancer Recurrence and sex in patients with a partner/spouse.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  9. Phase 2: Associations between data on Fear of Cancer Recurrence and age in patients with a partner/spouse.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  10. Phase 2: Associations between data on Fear of Cancer Recurrence and educational level in patients with partner/spouse.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  11. Phase 2: Associations between data on Fear of Cancer Recurrence and patients' disease stage in partners/spouses of non-single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations between data on Fear of Cancer Recurrence and patients' disease stage: Leibovich disease risk groups (low, medium, and high).

  12. Phase 2: Associations between data on Fear of Cancer Recurrence and partners'/spouses' comorbidities in partners/spouses of non-single patients.

    Time frame: From inclusion to week 52.

    Logistic statistical analyses will be conducted to investigate associations.

  13. Phase 2: Associations between data on Fear of Cancer Recurrence and sex of partners/spouses among non-single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  14. Phase 2: Associations between data on Fear of Cancer Recurrence and age of partners/spouses among non-single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

  15. Phase 2: Associations between data on Fear of Cancer Recurrence and educational level in partners/spouses of non-single patients.

    Time frame: From inclusion to week 52.

    Logistic regression analyses will be conducted to investigate associations.

Other outcomes

  1. Phase 2: Investigate the association between Fear of Cancer Recurrence within couples (patient and partner/spouse).

    Time frame: From inclusion to week 52.

    For the investigation of the association between Fear of Cancer Recurrence (FCR) within couples (patient and partner) ideally the Actor-Partner Interdependence Model (APIM) will be applied. Alternatively, a Multilevel Model (MLM) can be applied if couples are treated as clusters to account for the dependent FCR scores between partners/spouses.

    The Fear of Cancer Inventory will be used to determine FCR. Higher score represents higher level of FCR. The score ranges from 0-168.

  2. Phase 2: Comparison between Fear of Cancer Regression in single patients and patients living in a relationship.

    Time frame: From inclusion to week 52.

    To compare the Fear of Cancer Recurrence score between single patients and patients in relationship, the Mann-Whitney U test will be applied.

    The Fear of Cancer Inventory will be used to to determine FCR. Higher score represents higher level of FCR. The score ranges from 0-168.

  3. Phase 2: Between-group differences of age distribution

    Time frame: At enrollment.

    Data on age will be presented as mean ± standard deviation and the independent t-test will be applied to investigate between-group differences (single patients vs. patients in a relationship vs. partner/spouse).

  4. Phase 2: Between-group differences in gender distribution

    Time frame: At enrollment.

    Data on sex will be presented as frequency with percentage using. Chi Square test will be applied to investigate between-group differences (single patients vs. patients in a relationship vs. partner/spouse).

  5. Phase 2: Between-group differences in educational level

    Time frame: At enrollment.

    Data on educational level will be presented as frequency with percentages. Chi Square test will be applied to investigate between-group differences (single patients vs. patients in a relationship vs. partner/spouse).

  6. Phase 2: Between-group differences in disease stage

    Time frame: At enrollment.

    Data on disease stage by Leibovich disease risk groups (low, medium, and high) be presented as frequency and percentages. To investigate between-group differences (single patients vs. patients in a relationship) the Chi Square test will be applied

  7. Phase 2: Between-group differences of comorbidity burden

    Time frame: At enrollment.

    The Charlson Comorbidity Index will be applied to investigate disease burden in single patients versus non-single patients. The higher the score, the worse the prognosis.

    0 points: No comorbidities are present. 1-2 points: Moderate comorbidity. 3 points or above: Severe comorbidity. Data will be presented as frequency and percentages.

Study contacts

Contact information is provided by the study sponsor or research team.

Anne H Nielsen, PhD

CONTACT

[email protected]

+45 2015 8924

Brigitta R Villumsen, PhD

CONTACT

[email protected]

+45 20487820

Sponsors and collaborators

Lead sponsor

Brigitta Rasmussen Villumsen

Other

Collaborators

  • Aalborg University Hospital
  • Aarhus University Hospital

Registry information

Official study title

Patient-partnered Research: a Key to Investigating Fear of Cancer Recurrence in Patients With Surgically Treated Kidney Cancer (PP-RECURK)

Acronym: PP-RECURK

Important dates

Study start
2025
Primary completion
2028
Study completion
2028
First posted
Nov 18, 2025
Registry last updated
Apr 1, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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