ConquerFear-Group: A randomized controlled trial of an online-delivered group-based psychological intervention for fear of cancer recurrence in breast cancer survivors.

OBJECTIVE: Fear of cancer recurrence (FCR) is a distressing concern among cancer survivors. Interventions to address FCR need to be effective but also accessible and low cost. This randomized controlled trial evaluated the efficacy of an online group-based psychological intervention for FCR (ConquerFear-Group). METHODS: Eligible breast cancer (BC) survivors had completed primary treatment 3 months-5 years previously, were ≥18 years, and scored ≥22 on the Fear of Cancer Recurrence Inventory-Short Form (FCRI-SF). Participants were randomized to online ConquerFear-Group (focusing on metacognitive strategies, values-clarification, and education about follow-up behavior) or online group-based relaxation training (active control). Questionnaires were completed at baseline (T1), 1 week post-intervention (T2), three (T3) and six (T4) months later. The primary outcome was FCR (FCRI total). A number of secondary and process outcomes were also collected. Treatment effects were evaluated with mixed linear models. RESULTS: Of 866 eligible BC survivors, 475 (55%) completed the FCR screening, and 85 (18%) were randomized to ConquerFear-Group or relaxation training (2 × 6 groups). Compared with control participants, ConquerFear-Group participants experienced larger reductions in FCR (Cohen's d = 0.47, p = 0.001) and FCR severity (d = 0.57, p < 0.001), as well as mindfulness and decentering from baseline through follow-up, and improvements in emotion regulation (T2), worry (T2, T3) and rumination (T2) at some time points. CONCLUSIONS: The results demonstrated statistically significant and stable effects of ConquerFear-Group on FCR that were maintained over a 6-month period. It is suggested to investigate the program in a real-life setting, where a pragmatic trial can further demonstrate feasibility and effectiveness.

What is the prevalence of fear of cancer recurrence in cancer survivors and patients? A systematic review and individual participant data meta-analysis.

OBJECTIVE: Care for fear of cancer recurrence (FCR) is considered the most common unmet need among cancer survivors. Yet the prevalence of FCR and predisposing factors remain inconclusive. To support targeted care, we provide a comprehensive overview of the prevalence and severity of FCR among cancer survivors and patients, as measured using the short form of the validated Fear of Cancer Recurrence Inventory (FCRI-SF). We also report on associations between FCR and clinical and demographic characteristics. METHODS: This is a systematic review and individual participant data (IPD) meta-analysis on the prevalence of FCR. In the review, we included all studies that used the FCRI-SF with adult (≥18 years) cancer survivors and patients. Date of search: 7 February 2020. Risk of bias was assessed using the Joanna Briggs Institute critical appraisal tool. RESULTS: IPD were requested from 87 unique studies and provided for 46 studies comprising 11,226 participants from 13 countries. 9311 respondents were included for the main analyses. On the FCRI-SF (range 0-36), 58.8% of respondents scored ≥13, 45.1% scored ≥16 and 19.2% scored ≥22. FCR decreased with age and women reported more FCR than men. FCR was found across cancer types and continents and for all time periods since cancer diagnosis. CONCLUSIONS: FCR affects a considerable number of cancer survivors and patients. It is therefore important that healthcare providers discuss this issue with their patients and provide treatment when needed. Further research is needed to investigate how best to prevent and treat FCR and to identify other factors associated with FCR. The protocol was prospectively registered (PROSPERO CRD42020142185).

ConquerFear-group: Feasibility study with pilot results of a psychological intervention for fear of cancer recurrence delivered in groups.

OBJECTIVE: ConquerFear has been found to effectively reduce fear of cancer recurrence (FCR). Group interventions may be particularly effective for the treatment of FCR and could lower overall costs. Our objectives were therefore to adapt ConquerFear into a group format (ConquerFear-Group, CF-G), and to evaluate its feasibility, acceptability, and preliminary efficacy. METHODS: Eligible patients had completed treatment for breast cancer 3 months to 5 years previously, were ≥18 years, and scored ≥22 on the Fear of Cancer Recurrence Inventory-Short Form (FCRI-SF). The manual was first evaluated with seven patients (Pilot 1), adjusted in accordance with feedback from the patients, therapists, and the original ConquerFear developers. After further evaluation with eight patients (Pilot 2), and subsequent adjustments, the preliminary efficacy of the final manual was evaluated with 27 patients, randomized in blocks to CF-G (N = 13) or active control (AC) (relaxation training) (N = 14) (Pilot 3). The primary outcome was the FCRI total score. Secondary outcomes included general distress, quality-of-life, and process outcomes pertaining to metacognitions, decentering, and worry. All measures were completed at baseline, post-treatment, and at 3 and 6 months follow-up. RESULTS: Adjustments of the original ConquerFear manual (Pilot 1 and 2) included changes in the order of treatment components, simplified exercises, and shortened homework. Compared with ACs, CF-G participants reported greater reductions in FCRI total scores from baseline to post-treatment (Hedges's g = 0.59, p = 0.004), 3 months (g = 0.50, p = 0.026), and 6 months later (g = 0.93, p = 0.043). Differences corresponding to medium-to-large effect sizes (Pilot 3). Although non-significant, group differences concerning reductions in general distress and maladaptive metacognitions corresponded to small-to-medium effect sizes (g = 0.40-0.61; ps = 0.40-0.61). CONCLUSIONS: CF-G appears feasible and potentially efficacious in treating FCR in a breast cancer population. These preliminary results are promising but need to be confirmed in a larger randomized trial.

Effect of Psychological Intervention on Fear of Cancer Recurrence: A Systematic Review and Meta-Analysis.

PURPOSE: Fear of cancer recurrence (FCR) is a significantly distressing problem that affects a substantial number of patients with and survivors of cancer; however, the overall efficacy of available psychological interventions on FCR remains unknown. We therefore evaluated this in the present systematic review and meta-analysis. METHODS: We searched key electronic databases to identify trials that evaluated the effect of psychological interventions on FCR among patients with and survivors of cancer. Controlled trials were subjected to meta-analysis, and the moderating influence of study characteristics on the effect were examined. Overall quality of evidence was evaluated using the GRADE system. Open trials were narratively reviewed to explore ongoing developments in the field (PROSPERO registration no.: CRD42017076514). RESULTS: A total of 23 controlled trials (21 randomized controlled trials) and nine open trials were included. Small effects (Hedges's g) were found both at postintervention (g = 0.33; 95% CI, 0.20 to 0.46; P < .001) and at follow-up (g = 0.28; 95% CI, 0.17 to 0.40; P < .001). Effects at postintervention of contemporary cognitive behavioral therapies (CBTs; g = 0.42) were larger than those of traditional CBTs (g = 0.24; ß = .22; 95% CI, .04 to .41; P = .018). At follow-up, larger effects were associated with shorter time to follow-up (ß = -.01; 95% CI, -.01 to -.00; P = .027) and group-based formats (ß = .18; 95% CI, .01 to .36; P = .041). A GRADE evaluation indicated evidence of moderate strength for effects of psychological intervention for FCR. CONCLUSION: Psychological interventions for FCR revealed a small but robust effect at postintervention, which was largely maintained at follow-up. Larger postintervention effects were found for contemporary CBTs that were focused on processes of cognition-for example, worry, rumination, and attentional bias-rather than the content, and aimed to change the way in which the individual relates to his or her inner experiences. Future trials could investigate how to further optimize and tailor interventions to individual patients' FCR presentation.