Assessing the impact of a self-guided digital intervention for fear of cancer recurrence (iConquerFear) in ovarian cancer survivors: a pilot randomised waitlist-controlled trial.

Background: Approximately 50% of ovarian cancer (OC) survivors report fear of cancer recurrence/progression (FCR/P) as the most challenging aspect of living with cancer. This pilot, randomised waitlist-controlled trial aimed to evaluate the feasibility, acceptability, and safety of iConquerFear, a self-guided online FCR intervention for OC survivors.

Methods: Stage I-III OC survivors were recruited via Ovarian Cancer Australia (OCA) between October-December 2022. Participants were randomised to access iConquerFear immediately (intervention) or after 8 weeks (waitlist-control). Primary outcomes were feasibility, acceptability, and safety. Secondary outcomes included: engagement barriers/enablers, perceived impact of iConquerFear, and suggested improvements via semi-structured interviews. Exploratory outcomes included group differences in FCR and FoP after iConquerFear use.

Results: Of 62 eligible survivors, 55 (61%) were randomised (intervention n = 29; control n = 26). At baseline 55% (30/55) reported severe FCR (FCRI-SF ≥ 22). Of those randomised, 51% (n = 28) accessed iConquerFear; 16/28 (57%) users completed ≥ 3/5 modules. Mean post-intervention acceptability score (IEUQ) was 3/4 (SD = 0.8). Three (11%) users withdrew due to distress from iConquerFear. Qualitative interviews (n = 13) identified 6 key themes (e.g., participant factors influencing engagement). Differences between intervention and control group changes in FCR/P were non-significant.

Conclusions: iConquerFear does not appear appropriate for OC survivors in its current format due to limited engagement, varied acceptability, safety concerns and minimal group differences in FCR/P after iConquerFear use. More work is needed regarding how to augment online interventions addressing sensitive issues such as FCR/P in OC survivors (e.g., offering complementary in-person support) to ensure feasibility, acceptability and safety.

Trial Registration: This trial is registered with ANZCTR.org (ACTRN12622000592741p) on 21 April 2022.