Do psychosocial factors influence the course of breast cancer? A review of recent literature, methodological problems and future directions

Frequency of Private Prayer Predicts Survival Over 6 Years in a Nationwide U.S. Sample of Individuals with a Chronic Illness

Prayer is central to religious/spiritual life, and there are many claims for its effectiveness. However, few studies have examined whether frequency of prayer predicts survival in people with a chronic illness. This study follows a nationwide United States sample of people with a chronic illness (N = 1931) from 2014 to 2020. Those who prayed on a daily basis or more were significantly more likely to survive over 6 years (Hazard Ratio = 1.48; 95% Confidence Intervals: 1.08-2.03) compared with those who prayed less often, after controlling for biomedical variables (age, medical symptoms), sociodemographics (sex, race, and education), psychosocial variables (depression, social support), and health behaviors (alcohol use, smoking, exercise, and body mass index/weight).

Psychosocial interventions reduce cortisol in breast cancer patients: systematic review and meta-analysis

Introduction

Cancer initiation, progression and recurrence are intricate mechanisms that depend on various components: genetic, psychophysiological, or environmental. Exposure to chronic stress includes fear of recurrence that can affect biological processes that regulate immune and endocrine systems, increase cancer risk, and influence the survival rate. Previous studies show that psychological interventions might influence the level of cortisol that has been extensively used as a biomarker for measuring hypothalamic-pituitary-adrenal axis functioning and body's immunity response. This meta-analysis aimed to provide a quantitative scrutiny of the effect of certain types of psychosocial interventions on cortisol as a neuroendocrine biomarker in saliva or blood and might predict breast cancer (BC) progression.

Methods

A literature search was performed in the following databases: PubMed, The Cohrane Library, Scopus, WOS, PsychInfo, Google Scholar, Ovid Science Direct. After methodical selection of originally generated 2.021 studies, the search yielded eight articles that met inclusion criteria. All these studies explored effects of psychosocial interventions that measured cortisol in total of 366 participants with BC, stages 0-IV, in randomized control trial or quasi experimental study design setting. We applied random effects model to conduct meta-analyses on the parameters of salivary and plasma cortisol and used PRISMA Guidelines as validated methodology of investigation to report the results.

Results

Eight studies selected for meta-analysis have shown the reduction of cortisol level due to applied psychosocial intervention. The random effects model showed that interventions produced large effect sizes in reductions of cortisol in blood (Cohen's d = -1.82, 95% Confidence Interval (CI): -3.03, -0.60) and slightly less in saliva (d = -1.73, 95%CI: -2.68, -0.78) with an overall effect of d = -1.76 (95%CI: -2.46, -1.07).

Conclusion

Our study concluded that certain types of psychosocial interventions reduce cortisol (indicator of chronic stress) in patients with BC. Application of specific psychosocial support as adjuvant non-invasive therapy for affected females with BC at all phases of treatment could contribute to more cost-effective health care.

Fighting for Life: A Qualitative Analysis of the Process of Psychotherapy-Assisted Self-Help in Patients With Metastatic Cancer

This exploratory study is an attempt to define psychological attributes related to longer survival in patients with meta-static cancers. Previous published analyses have been limited in two ways. First, they have almost always been carried out on patients not receiving therapy; we have followed people receiving a year of group therapy, on the assumption that if mental qualities are to affect cancer progression, substantial mental change would be needed to alter the established balance between the cancer cells and host regulatory mechanisms. Second, the methods typically used to characterize patients’ psychology have been self-report inventories, and many decades of research with such methods have largely failed to produce a consensus on what mental qualities, if any, promote survival. By contrast, we have used qualitative methods, allowing a much more in-depth analysis of the patients, without preliminary assumptions as to what would be important.

The present report describes the results of a detailed qualitative analysis of data collected from 22 participants over a year of weekly group therapy. Using grounded methods, categories were derived from the extensive verbal data (comprising patients’ written homework and therapists’ notes), and linked in a model of change. By applying ratings to some of these categories, and combining these ratings, we derived a quantitative estimate of patients’“involvement in self-help.” Rankings on degree of involvement corresponded quite closely with the quality of patients’ experience and with their survival duration.

There was a great range in degree of involvement, and various subgroupings could be discerned. Nine of the participants were classed as “highly involved,” meaning that they devoted regular daily time, often several hours, to such self-help strategies as relaxation, mental imaging, meditation, cognitive monitoring and journalling. All but 1 of these patients enjoyed a good quality of life and lived at least 2 years. Two of them have remained in complete remission for 7 years. At the other end of the scale, 8 patients showed little application to the work, being either unconvinced that it would help them or hampered by psychological problems such as low self-esteem. None of these was rated as having a good quality of life, and only 1 lived more than 2 years, although, as a group, their medicalprognoses were no more unfavorable at the onset of therapy than for the “high involvement” group. The different subgroups and aspects of the model are illustrated by representative quotations.

When Technical Rationality Fails

The theory that thinking is modelled on the social activity of argument is investigated through the views of general practitioners about terminally ill patients. The social activity of general practice centres on the consultation, which the doctor manages by 'technical rationality'. But this is difficult when the patient is terminally ill. In that case technical rationality is seen to fail and rhetorical skills are invoked. GPs' thinking about such consultations can be described using an agonistic model based on a hierarchy of objectives, strategies and tactics. The objective of keeping patients comfortable and dignified is aimed at through three strategies, and a variety of rhetorical tactics is drawn on in thinking about these strategies.

What is the state of the evidence on the mind–cancer survival question, and where do we go from here? A point of view

GOALS OF WORK

There is long history of anecdote and surmise linking psychosocial factors to cancer incidence and survival. However, over the past three decades, an increasing number of rigorous studies have investigated the possibility of a mind-cancer survival connection. The objective of this paper is (1) to review the past 30 years of psycho-oncology research on the mind-cancer survival question, (2) to review the methodological debate and interpretations of the research findings, and (3) to consider future research directions.

MAIN RESULTS

Over the past three decades, a small number of studies have been published. Some observational and quasi-experimental studies suggest the possibility that coping and psychological factors may influence disease outcomes, but clinical trials suggest that psychosocial interventions do not prolong survival. Methodological comment and interpretation about the significance of these trials vary. Some researchers view the mind-cancer survival question as resolved and negative, whereas others identify conceptual and methodological challenges and view the possible impact of psychosocial factors on survival as simply unproven. We take the position that the question is unanswered.

CONCLUSION

Recommended future research directions include: (1) more trials based on testable theories, targeted interventions, and greater specificity in the measurement model and (2) new research questions and more rigorous observational, prospective, and longitudinal studies, case studies, mixed methods, and innovative design approaches being developed by complementary and alternative medicine researchers. Further research is warranted on the mind-cancer survival question.

Personality and disease outcome in malignant melanoma

OBJECTIVE

The objective of this study is to evaluate the role of personality in the prediction of recurrence and survival times in early-stage malignant melanoma.

METHODS

Sixty patients with Stage I malignant melanoma were assessed shortly after surgery and followed for 10-year outcome. Survival analyses were conducted (i.e., log-rank test and Cox proportional hazards regression method), with covariates and personality type as measured by the Eysenck Personality Questionnaire (EPQ).

RESULTS

Men were three times more likely to recur and seven times more likely to die from malignant melanoma than were women. Every millimeter of tumor depth also increased the risks of both recurrence and death twofold. In contrast to medical indices, personality type could not be used to determine risk for either outcome.

CONCLUSION

In the present study, personality type did not predict recurrence and survival times. Rather, malignant melanoma prognosis was overwhelmingly determined by disease biology.

Health-Related Quality of Life Parameters As Prognostic Factors in a Nonmetastatic Breast Cancer Population: An International Multicenter Study

Purpose

The purpose of this research was to evaluate whether baseline health-related quality of life (HRQOL) parameters are prognostic factors for survival in locally advanced breast cancer patients. Although the literature highlights the important role of HRQOL parameters in predicting survival in advanced metastatic disease, little evidence exists for earlier stages.

Patients and Methods

The overall sample consisted of 448 patients randomly assigned to receive cyclophosphamide, epirubicin, and fluorouracil versus epirubicin, cyclophosphamide, and granulocyte colony-stimulating factor. Patients were enrolled in 12 countries. HRQOL baseline scores were assessed using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire C30. The Cox proportional hazards regression model was used for both univariate and multivariate analyses of survival. In addition, a bootstrap resampling technique was used to assess the stability of the outcomes. Bootstrap results were then applied for model averaging purposes as a means to account for the observed model selection uncertainty.

Results

The final multivariate model retained inflammatory breast cancer (T4d) as the only factor predicting overall survival (OS) with a hazard ratio of 1.375 (95% CI, 1.027 to 1.840; P = .03). The presence of inflammatory breast cancer lowers the median survival time from 6.6 to 4.2 years (36% reduction). None of the preselected HRQOL variables were prognostic for OS or disease-free survival, in either the univariate or multivariate analysis.

Conclusion

Our findings suggest that baseline HRQOL parameters have no prognostic value in a nonmetastatic breast cancer population.

Immune function and adjustment style: do they predict survival in breast cancer?

The aim of this study was to investigate the role of immune status and psychosocial factors in survival from early breast cancer (N=61). Baseline assessments included lymphocyte number and function, natural killer cell activity (NKA), plasma cortisol and prolactin level. Psychosocial measures included anxiety, depression and mental adjustment to cancer and social support. Length of follow-up was 6.1-7.9 years with 14 (23%) breast cancer deaths. In Cox proportional hazards models adjusting for lymph node status two parameters predicted longer survival, low NKA (HR 29 per LLU, p=0.003) and minimizing the illness adjustment (HR 0.64 per scale point, p=0.012). These data provide little evidence for a psychoneuroimmunological mechanism in the survival from breast cancer. While this study is limited due to small sample size, and therefore the possibility of inflated estimates, longer survival in those minimizing the illness is a finding consistent with recent studies; however, the counter-intuitive finding that high NKA predicts shorter survival may be a marker for current disease or response to treatments.

Stress response syndromes and cancer: conceptual and assessment issues

Stress response syndromes have begun to receive research attention in cancer, including melanoma, Hodgkin's disease, breast cancer, and mixed-diagnosis samples. This paper focuses on conceptual and assessment issues in the application of the trauma model to adaptation to cancer. Among the central considerations: differentiating cancer from other traumatic events, the utility of conceptualizing stress responses along a continuum in this population, diagnostic issues, and preliminary recommendations for therapeutic interventions.

Participation of oncological outpatients in psychosocial support

In total, 132 cancer patients in four oncology outpatient clinics in Hamburg completed a questionnaire consisting of a newly designed instrument for measuring psychosocial support. In this questionnaire, patients were asked about their knowledge of institutions offering support, their previous participation in psychosocial support, the reasons for participation and their experience with and attitude towards it. A second section consisted of standardized instruments: the EORTC QLQ-C30 questionnaire (Aaronson), the Brief Symptom Inventory (Derogatis and Melisaratos), the List of Physical Complaints (von Zerssen and Koller) and the Impact of Event Scale (Horowitz). Descriptive and variance-analytical methods were used for the analysis of results. Most respondents were women (88%). The largest group (72%) had a history of breast cancer. A total of 28% of the patients in the sample had participated in psychosocial support, about 4% of these in self-help groups. Participants in psychosocial support did not differ from non-participants in gender, but they were significantly younger. They showed considerably higher scores in emotional and physical distress than non-participants, their attitude towards psychosocial support was more positive, and they had more knowledge about institutions offering support than non-participants. The main reasons listed for their participation in psychosocial support were mental distress, a desire to obtain help, and the wish to cope with the illness. The main reason for not participating was sufficient support from the family, friends or doctors.

Quality-of-life scores predict outcome in metastatic but not early breast cancer. International Breast Cancer Study Group

PURPOSE

We compared the prognostic value of quality-of-life (QL) scores in the adjuvant setting and after relapse in two randomized trials of the International Breast Cancer Study Group.

PATIENTS AND METHODS

More than 2,000 premenopausal and postmenopausal patients with node-positive breast cancer who were participating in randomized trials that compared adjuvant therapies completed QL assessments for physical well-being, mood, appetite, and coping at study entry and at months 3 and 18 if they remained relapse-free and, in case of relapse, at 1 month and at 6 months after relapse. Cox regression models were used to test the relationship between QL scores and disease-free survival (DFS), in the adjuvant setting, or overall survival, in the case of postrelapse QL measurement. All models were stratified by language/country group and included other factors related to QL and/or outcome.

RESULTS

DFS was not significantly predicted by QL scores at baseline or month 18, or by changes in QL score between baseline and months 3 or 18. In contrast, after relapse, QL scores were predictive for subsequent overall survival. One month after relapse, better mood (P =.04) in premenopausal patients and better appetite (P =.005) in postmenopausal patients were associated with longer survival. Six months after relapse, better physical well-being (P =.03) and appetite (P =.03) in premenopausal patients and better physical well-being (P <.0001), mood (P =.002), appetite (P =.0001), and coping (P =.0001) in postmenopausal patients predicted longer survival.

CONCLUSION

Any prognostic significance of QL scores in the adjuvant setting is minimal or obscured by chemotherapy effects, but there is strong prognostic significance of QL scores after disease relapse. The contrast suggests that patient perception of the severity of underlying illness may determine reported QL scores.

Consumer participation in the development of psychosocial clinical practice guidelines: opinions of women with breast cancer

Clinical practice guidelines are playing an increasingly important role in defining quality care and consumers have a considerable interest in participating in the development of guidelines. The objective of this study was to explore consumer's perceptions of guideline items relating to psychosocial care of women with breast cancer, developed by Australia's National Health and Medical Research Council National Breast Cancer Centre. Women diagnosed with breast cancer in the previous 2 years (n = 313) received a letter about the study via their radiation oncologist. Consenting women were contacted by the researchers to complete a telephone survey. The survey asked women to rate the importance of draft guidelines items, including discussing prognosis, providing information and choice, doctor-patient communication, preparation for surgery, providing emotional support, providing social support, dealing with practical and cultural issues and continuity of care. One hundred and forty women (45%) completed the survey. The results indicated that at least 50% of respondents rated 28 of the 52 items as 'essential' components, with respondents identifying providing information and choice, and doctor-patient communication as the most important aspects of psychosocial care. The findings suggest the guidelines adequately reflect consumer opinions and identify priority areas for clinicians to address in providing psychosocial support to women with breast cancer.

Improving the quality and quantity of life among patients with cancer: a review of the effectiveness of group psychotherapy

Cancer patients suffer from a number of psychosocial problems related to the progression of their disease as well as standard medical interventions. Fortunately, there is empirical evidence suggesting that group psychotherapy is effective at ameliorating psychological distress and in some cases improving survival. For this literature review we examined the psychological morbidity, particularly anxiety and depression, among cancer patients. Further, we conducted a critical examination of the current evidence regarding the effectiveness of group psychotherapy for improving the quality as well as the quantity of life in cancer patients. Finally, we explored the specific components of effective group psychotherapy, which has been associated with enhanced survival. We conclude that there is compelling evidence indicating that group psychotherapy improves the quality of life of cancer patients. Furthermore, there is a growing body of evidence suggesting that group psychotherapy improves survival of cancer patients.

Psychosocial correlates of cancer relapse and survival: a literature review

This article reviews literature on the psychosocial correlates of cancer relapse and survival from 1979 through 1995. The factors studied were structured according to a theoretical model of coping with cancer. Reviewed studies have shown that factors most frequently evaluated were depression, anxiety, hopelessness/helplessness, hostility, marital status and social involvement. Mainly inconsistent results were found. The strongest evidence for a relationship between psychosocial variables and prognosis was found for social involvement/social support; in 7 of 15 studies a positive relationship was demonstrated, while no negative associations were found. Coping styles e.g., fighting spirit and stoic acceptance, and severe/stressful life events were found to have no conclusive influence on the length of survival. Important determinants of the coping model, such as uncertainty and information given by the specialist were not studied as possible predictors of survival and/or relapse free period. Among the factors that showed no correlation at all was multidimensional health locus of control. For the inconsistent findings, a considerable number of methodologic shortcomings with respect to study design, sample size, measure and statistical analysis are enumerated.

Cognitive-existential group therapy for patients with primary breast cancer--techniques and themes

We describe a model of cognitive-existential group therapy designed to be integrated over 6 months with regimens of adjuvant chemotherapy given as conventional medical treatment to breast cancer patients with stage 1 and 2 disease. Our broad therapy goals are for members to develop a supportive network, work through grief over losses, improve problem solving and develop cognitive strategies to maximise coping, enhance a sense of mastery over life and re-evaluate priorities for the future. Specific group themes include death anxiety, fear of recurrence, living with uncertainty, understanding treatment with chemotherapy, radiotherapy and hormone regimens, the collaborative doctor-patient relationship, body and self image, sexuality, relationships with partner, friends and family, surgical reconstruction, life style effects and future goals. Active coping skills are developed through teaching formal problem solving and cognitive restructuring of automatic negative thoughts. Technical aspects of the therapy are discussed.

Adjustment to breast cancer: the psychobiological effects of psychosocial interventions

This review focuses on the effects of psychosocial interventions on psychological and biological functioning of breast cancer patients. Once in their lifetime, one out of eleven women receive a diagnosis of breast cancer. A diagnosis of breast cancer is a severe stressful life event with profound consequences on all aspects of human life. Whether a woman will regain emotional balance and accept the idea of living with a potentially life threatening disease depends on her psychological resiliency. Provision of psychosocial interventions can improve these women's coping abilities and reduce emotional distress and feelings of isolation, and improve psychosexual functioning. Additionally, there exists some evidence that psychotherapy may prolong survival. Prolongation of survival may be related, in part, to an increase in certain aspects of immune function (e.g., natural killer cell activity). This is plausible because the function of the immune system seems to be related to mammary tumor growth. Therefore, future research should examine the degree to which the effects on mammary tumor growth relate to immune system changes.

Psychoneuroimmunology and cancer: historical perspectives and current research

The belief that cancer might be related to temperament or distress has been emphasized throughout the history of medicine. The field of psychoneuroimmunology has its origins in psychosomatic medicine, and has evolved to the investigations of complex interactions between the psyche and the nervous, immune, and endocrine systems. Such interactions may have implications in both cancer risk and survival.

Psychosocial support, treatment of metastatic disease and palliative care

This article deals with four linked but distinct aspects of care for women with breast cancer, with an emphasis on the pivotal role of the general practitioner: 1. Modern medicine is fast recognising the need for psychosocial support of patients; in fact, for an integrated approach to caring for the whole person at all stages of illness. 2. Oncological treatment of metastatic disease needs to be individualised and based on realistic expectations of outcome balanced against side effects. 3. An open dialogue about the role and appropriateness of so-called "alternative" or "complementary" therapies is needed. 4. Despite significant improvements in palliative care quality and access in Australia in the last decade, many practitioners still require support and advice in this demanding area of care (particularly about difficult symptom control).

Active confrontational coping predicts decreased clinical progression over a one-year period in HIV-infected homosexual men

The association between stressful life events, psychiatric symptoms, coping, and social support and HIV disease progression one year later were studied in 51 HIV-infected asymptomatic and early symptomatic homosexual men. Dependent variables were CD4 counts and clinical progression. No associations between the psychosocial parameters and CD4 counts were found. Active confrontation with HIV infection as a coping strategy was predictive of decreased clinical progression at one year follow-up, after taking into account baseline biomedical and behavioral variables. These results show that active coping strategies may have an effect on disease progression, possibly mediated by greater compliance with medical treatments or by psychoneuroimmunological mechanisms.

Psychosocial factors in women with operable breast cancer. An association to estrogen receptor status?

The association between psychosocial parameters and estrogen receptor (ER) status was evaluated in 85 consecutive breast cancer patients with stage I and II disease. Patients were categorized into those with ER+ and ER- tumours. Life events, emotional control, neuroticism, social support, adjustments to illness, and psychological distress were measured the day before surgery. Group comparisons showed significant differences between the groups as to age, emotional control and distribution of the life event: "experienced another illness/accident/hospitalization during the last year". A multiple regression analysis indicated significant effect for variables "age" and "life event", explaining 19% of the variation in ER level. The variable "emotional control" was positively correlated to age (r = 0.369) and did not contribute in itself. We conclude that none of the factors were associated with ER status when age and personal health data were controlled for. Our study does not support ER status as a possible link between behavioural factors and disease course in breast cancer.

Social support and survival among women with breast cancer

BACKGROUND

Two recently reported randomized trials, one among patients with advanced breast cancer and the other among patients with early stage melanoma, suggested that social support may affect survival favorably. This study assesses relationships of social support indicators with 7-year survival among women diagnosed with localized or regional stage breast cancer.

METHODS

All newly diagnosed patients with surgically treated localized or regional disease in seven Quebec City hospitals in 1984 were considered for this analysis. Among 235 eligible patients, 224 (95%) participated in a home interview 3 months after surgery. This interview provided information on the use of confidants in the 3 months after surgery. Data on disease and treatment characteristics were abstracted from patients' medical records.

RESULTS

Compared with women who used no confidant in the 3 months after surgery, the hazard ratio for the 7-year period was 0.61 (95% confidence interval [CI], 0.33-1.12) among those who had used at least one confidant, 0.54 (95% CI, 0.28-1.06) in women who used two or more types of confidant, and 0.51 (95% CI, 0.22-1.18) among those whose confidants included either physician or nurse. These results were adjusted for age, presence of invaded axillary lymph nodes, adjuvant radiotherapy, and adjuvant systemic therapy (hormone or chemotherapy).

CONCLUSION

These results support the view that social support may be associated with longer survival among women with localized or regional stage breast cancer.

Health caring. Psychosocial support for patients with cancer

Psychosocial treatments, including group, individual, and family therapies, are of proven efficacy and deserve inclusion as standard components of biomedical treatment for patients with cancer. Four issues regarding such treatment are reviewed. The first is need. Significant anxiety and depression are common (and treatable) problems among the medically ill and represent a major aspect of the burden of illness. Even those with less severe emotional reactions need help coping with the stress of serious illness. The second is methods. Psychotherapy, both group and individual, provides valuable emotional and social support and teaches important symptom management skills. The third is outcome. Psychotherapy has been shown to be effective in improving quality of life and enhancing the ability of the medically ill to cope with their illness. Results of various psychotherapies include reducing depression and anxiety, improving coping skills, and in some cases, extending survival time. The fourth is cost offset. Appropriate psychotherapeutic intervention saves money by reducing unnecessary office visits, diagnostic tests, medical procedures, and hospital admittance.