Cited by 51Mindfulness and Compassion InterventionsCancer survivorship and carePalliative Care and End-of-Life Issues

Acceptance and commitment therapy for adults with advanced cancer (CanACT): A feasibility randomised controlled trial

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Serfaty, Marc, Armstrong, Megan, Vickerstaff, Victoria, Davis, Sarah, Gola, Anna, McNamee, Philip, Omar, Rumana Z., King, Michael +3 more·2019·Psycho-Oncology

Abstract

Objective: To understand the feasibility of recruiting people with advanced cancer into a randomised controlled trial of acceptance and commitment therapy (ACT) vs a standardised talking control (TC) and delivering ACT to this population; to explore the acceptability of outcome measures and generate normative data. Methods: This was a feasibility two‐arm randomised controlled trial. Participants were attendees with advanced cancer at one of three hospice‐based day‐therapy units in London, United Kingdom, who demonstrated low scores on the Functional Assessment of Cancer Therapies—General (FACT‐G). The primary end point was 3 months. Results: The recruitment target was 54 participants; 42 people were recruited and randomised to up to eight individual sessions of ACT (n = 20) or TC (n = 22). Eighteen out of 42 (43%) of participants completed the primary outcome at 3 months, and at least one follow‐up was available in 30/42 (71%) participants. An exploratory analysis revealed a non‐significant adjusted mean difference after 3 months in the main outcome FACT‐G of −3.41 (CI = −18.61‐11.79) with TC having better functioning. Over 6 months, the adjusted mean difference between trial arms was 2.25 (CI = −6.03‐10.52) in favour of ACT. Conclusions: It is feasible to recruit people with advanced cancer in a trial of ACT versus TC. Future research should test the effectiveness of ACT in a fully powered trial.

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Crossref · 10.1002/pon.4960

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  • Six studies showed improvements in valued living post intervention, although only one RCT showed statistically significant improvements.

    “Six studies showed improvements in valued living post intervention,46,52,60,63,66 although only one RCT showed statistically significant improvements. 66”

    From Acceptance and Commitment Therapy (ACT) for people with advanced progressive illness, their caregivers and staff involved in their care: A scoping review. (2023) · cites this paper as [60]

    The citation numbered 66 is attached to the claim that this RCT found a statistically significant improvement in valued living. In the paper’s “Process of ACT” section, the three-month adjusted difference on the Valued Living Questionnaire is 0.22, with a 95% confidence interval of −19.42 to 19.87. Because that interval includes zero, the reported result does not support statistical significance. (LLM, conf=0.91)

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  • ACT has shown significant and lasting results in reducing emotional distress and depressive symptoms, anxiety, fatigue, and sleep, and improving health-related quality of life, acceptance, and psychological flexibility in advanced cancer.

    “Ha mostrado resultados significativos y duraderos en reducción del distrés emocional y síntomas depresivos, ansiedad, fatiga y sueño, y en mejora de calidad de vida relacionada con la salud, de la aceptación y de la flexibilidad psicológica (19,47 ,49,66-68)”

    From AVANZACT: protocolo e intervención psicoterapéutica en cáncer avanzado basados en Terapia de Aceptación y Compromiso. (2025) · cites this paper as [47]

    The Abstract reports that an earlier trial in advanced ovarian cancer suggested improved quality of life and reduced psychological distress with ACT. But this feasibility trial did not establish significant or lasting benefits: the three-month confidence intervals for distress and quality of life include no difference, and the cited passages do not report benefits for depression, anxiety, fatigue, sleep, or acceptance. (LLM, conf=0.86)

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  • Six studies showed improvements in distress, with three RCTs showing statistically significant improvements.

    “Six studies showed improvements in distress, with three RCTs showing statistically significant improvements53,54,60”

    From Acceptance and Commitment Therapy (ACT) for people with advanced progressive illness, their caregivers and staff involved in their care: A scoping review. (2023) · cites this paper as [60]

    The Psychological distress section reports a lower mean distress score in the ACT group at three months, so this trial shows a descriptive improvement. But its adjusted between-group difference was 0.6 (95% CI −7.25 to 8.53), which does not support counting it as an RCT with a statistically significant improvement. This paper alone cannot establish the claimed counts across six studies or three RCTs. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • In the other hospice-based study, only 8 of 20 (40%) allocated to the 8-week intervention condition completed the 1.5 month follow-up due to death, feeling too unwell, feeling overburdened and related reasons.

    “in the other, only 8 of 20 (40%) allocated to the 8-week intervention condition completed the 1.5 month follow-up due to death, feeling too unwell, feeling overburdened and related reasons. 60”

    From Acceptance and Commitment Therapy (ACT) for people with advanced progressive illness, their caregivers and staff involved in their care: A scoping review. (2023) · cites this paper as [60]

    The Interventions section describes eight weekly sessions, and Timing of measures places a FACT-G follow-up at six weeks (1.5 months). The paper also reports substantial follow-up attrition and deaths, but the Uptake of therapy sessions section says 21 participants were allocated to ACT, not 20; the available passages do not establish that eight ACT participants completed the six-week follow-up or that the listed reasons account for noncompletion at that time point. Page numbers are unavailable in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Compared with previous studies on ACT for patients with advanced cancer, this work showed high attendance and retention rates.

    “Compared with previous studies on ACT for patients with advanced cancer,54,55 this work showed high attendance and retention rates.”

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Authors
Serfaty, M., Armstrong, M., Vickerstaff, V., Davis, S., Gola, A., McNamee, P., Omar, R. Z., King, M., Tookman, A., Jones, L., & Low, J. T. S.
Affiliations
  • University College London (GB)
  • St Pancras Hospital (GB)
  • Marie Curie (GB)
Corresponding author
Armstrong, Megan
Venue
Psycho-Oncology
Publisher
Wiley
Published
2018-12-21
Volume
28
Issue
3
Pages
488-496
ISSN
  • 1057-9249 (ISSN-L)
  • 1099-1611
OpenAlex
W2903295109
Cited by
50
References
26
Citations by year
2026: 3 · 2025: 5 · 2024: 8 · 2023: 9 · 2022: 8 · 2021: 8 · 2020: 5 · 2019: 4
FWCI
4.98
Type
journal article
Language
en
Open access
Locations
  • Psycho-Oncology (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • National Institute for Health Research (NIHR): Research for Patient Benefit (PB-PG-1111-26043)
  • Marie Curie core grant funding (MCCC-FPO-16-U)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
  • Health Sciences › Medicine › Oncology › Cancer survivorship and care
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Palliative Care and End-of-Life Issues
Keywords
acceptance and commitment therapy, advanced cancer, feasibility, trial recruitment, FACT-G, quality of life, trial acceptability
MeSH terms
Adult, Cost-Benefit Analysis, Feasibility Studies, Female, United Kingdom, Humans, Male, Middle Aged, Neoplasms, Patient Compliance, Patient Satisfaction, Outcome Assessment, Health Care, Acceptance and Commitment Therapy

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