Cancer and suicidal ideation and behaviours: protocol for a systematic review and meta-analysis

To what extent are psychological variables considered in the study of risk and protective factors for suicidal thoughts and behaviours in individuals with cancer? A systematic review of 70 years of research

Psychological variables substantially shape the risk of suicidal thoughts and behaviours (STBs). However, it is unclear to what extent they are considered in individuals with cancer. We synthesized the quantitative research landscape concerning psychological risk/protective factors of STBs in the (psycho-) oncological context. This pre-registered review (PROSPERO-ID CRD42022331484) systematically searched the databases PubMed/Medline, CINAHL, PsycInfo, Cochrane Library, and Web of Science (as well as the grey literature and preprints). Risk of bias (RoB) was estimated using the ROBINS-I tool. Of 11,159 retrieved records, 319 studies were eligible for inclusion. Of those, 163 (51.1%) had investigated psychological factors (affective: n = 155; social: n = 65; cognitive: n = 63; personality/individual differences: n = 37; life events: n = 6), in a combined 3,561,741 participants. The most common STBs were suicidal ideation (n = 107) or death wishes (n = 20) rather than behaviour (suicide deaths: n = 26; attempts: n = 14). Most studies had a serious RoB. Thus, a large body of research investigated STBs in cancer patients/survivors, but it rarely aligned with the theoretical or clinical developments in suicide research. We propose a conceptual model of STBs in cancer delineating moderation and mediation effects to advance the integration of the fields, and to inform future research and practice.

A systematic review of risk factors associated with depression and anxiety in cancer patients

Depression and anxiety are common comorbid conditions associated with cancer, however the risk factors responsible for the onset of depression and anxiety in cancer patients are not fully understood. Also, there is little clarity on how these factors may vary across the cancer phases: diagnosis, treatment and depression. We aimed to systematically understand and synthesise the risk factors associated with depression and anxiety during cancer diagnosis, treatment and survivorship. We focused our review on primary and community settings as these are likely settings where longer term cancer care is provided. We conducted a systematic search on PubMed, PsychInfo, Scopus, and EThOS following the PRISMA guidelines. We included cross-sectional and longitudinal studies which assessed the risk factors for depression and anxiety in adult cancer patients. Quality assessment was undertaken using the Newcastle-Ottawa assessment checklists. The quality of each study was further rated using the Agency for Healthcare Research and Quality Standards. Our search yielded 2645 papers, 21 of these were eligible for inclusion. Studies were heterogenous in terms of their characteristics, risk factors and outcomes measured. A total of 32 risk factors were associated with depression and anxiety. We clustered these risk factors into four domains using an expanded biopsychosocial model of health: cancer-specific, biological, psychological and social risk factors. The cancer-specific risk factors domain was associated with the diagnosis, treatment and survivorship phases. Multifactorial risk factors are associated with the onset of depression and anxiety in cancer patients. These risk factors vary across cancer journey and depend on factors such as type of cancer and individual profile of the patients. Our findings have potential applications for risk stratification in primary care and highlight the need for a personalised approach to psychological care provision, as part of cancer care.

Mental health considerations in patients undergoing complex head and neck reconstruction

PURPOSE OF REVIEW

To summarize recent advances in the psycho-oncology literature, with a focus on findings relevant to the head and neck cancer patient.

RECENT FINDINGS

Patients with cancer are at an increased risk of suicide and self-harm. Head and neck cancer patients are among the highest risk compared with other cancer patients. Unique challenges pertaining to disfigurement and voicelessness may, in part, explain these observations. Patient-reported outcome measures can be used to help identify high-risk patients.

SUMMARY

Psychosocial support needs are highest for head and neck cancer patients. Patient-reported outcome measures should be integrated within clinical workflows to identify high-risk patients.

Association of Patient-Reported Outcomes With Subsequent Nonfatal Self-injury After a New Cancer Diagnosis

Importance

Nonfatal self-injury (NFSI) is a patient-centered manifestation of severe distress occurring in 3 out of 1000 patients after cancer diagnosis. How to identify patients at risk for NFSI remains unknown.

Objective

To examine the associations between patient-reported outcome measures and subsequent NFSI in patients with cancer.

Design, Setting, and Participants

This population-based matched case-control study included adults with a new cancer diagnosis reporting an Edmonton Symptom Assessment System (ESAS) score within 36 months of diagnosis in Ontario, Canada, 2007 to 2019. Data analysis was performed January 2007 to December 2019.

Main Outcomes and Measures

Cases included patients with NFSI, and controls were patients without NFSI. Cases and controls were matched 1:4. Multivariable conditional logistic regression assessed the association between moderate to severe ESAS symptom scores and total ESAS (t-ESAS, range 0-90) score with NFSI in the subsequent 180 days.

Results

Of 408 858 patients reporting 1 or more ESAS assessments, 425 patients experienced NFSI and reported an ESAS score in the preceding 180 days. Of those, 406 cases were matched to 1624 control patients without an NFSI. Cases reported a higher proportion of moderate to severe symptoms and higher t-ESAS score than controls prior to the event. After adjustment, moderate to severe anxiety (odds ratio [OR], 1.61; 95% CI, 1.14-2.27), depression (OR, 1.66; 95% CI, 1.20-2.31), and shortness of breath (OR, 1.65; 95% CI, 1.18-2.31) and each 10-point increase in t-ESAS score (OR, 1.51; 95% CI, 1.40-1.63) were independently associated with higher odds of subsequent NFSI.

Conclusions and Relevance

In this case-control study, reporting moderate to severe anxiety, depression, and shortness of breath and an increasing t-ESAS score after cancer diagnosis were associated with higher odds of NFSI in the following 180 days. These data support the prospective use of routine ESAS screening as a means of identifying patients at higher risk for NFSI to improve supportive care.

Emerging Roles of N6-Methyladenosine Demethylases and Its Interaction with Environmental Toxicants in Digestive System Cancers

Digestive system cancers are common cancers with high cancer deaths worldwide. They have become a major threat to public health and economic burden. As one of the most universal RNA modifications in eukaryotes, the N6-methyladenosine (m6A) modification is involved in the occurrence, development, prognosis, and treatment response of various cancers, including digestive system cancers. M6A demethylases shape the m6A landscape dynamically, playing important roles in cancers. In addition, accumulating evidence reveal that many environmental toxicants are the established risk factors for digestive system cancers and associated with m6A modification. In this review, we summarize the multiple functions of M6A demethylases (fat mass and obesity-associated protein (FTO), AlkB homolog 5 (ALKBH5) and AlkB homolog 3 (ALKBH3)) in digestive system cancers, which are aberrantly expressed and affect cancer progression. We also discuss the potential roles of m6A demethylases in the assessment of environmental exposure, the signature for prevention and diagnosis of digestive system cancers.

Incidence of and Factors Associated With Nonfatal Self-injury After a Cancer Diagnosis in Ontario, Canada

IMPORTANCE

Psychological distress is a key component of patient-centered cancer care. While a greater risk of suicide among patients with cancer has been reported, more frequent consequences of distress, including nonfatal self-injury (NFSI), remain unknown.

OBJECTIVE

To examine the risk of NFSI after a cancer diagnosis.

DESIGN, SETTING, AND PARTICIPANTS

This population-based retrospective cohort study used linked administrative databases to identify adults diagnosed with cancer between 2007 and 2019 in Ontario, Canada.

EXPOSURES

Demographic and clinical factors.

MAIN OUTCOMES AND MEASURES

Cumulative incidence of NFSI, defined as emergency department presentation of self-injury, was computed, accounting for the competing risk of death from all causes. Factors associated with NFSI were assessed using multivariable Fine and Gray models.

RESULTS

In total, 806 910 patients met inclusion criteria. The mean (SD) age was 65.7 (14.3) years, and 405 161 patients (50.2%) were men. Overall, 2482 (0.3%) had NFSI and 182 (<0.1%) died by suicide. The 5-year cumulative incidence of NFSI was 0.27% (95% CI, 0.25%-0.28%). After adjusting for key confounders, prior severe psychiatric illness, whether requiring inpatient care (subdistribution hazard ratio [sHR], 12.6; 95% CI, 10.5-15.2) or outpatient care (sHR, 7.5; 95% CI, 6.5-8.8), and prior self-injury (sHR, 6.6; 95% CI, 5.5-8.0) were associated with increased risk of NFSI. Young adults (age 18-39 years) had the highest NFSI rates relative to individuals aged 70 years or older (sHR, 5.4; 95% CI, 4.5-6.5). The magnitude of association between prior inpatient psychiatric illness and NFSI was greatest for young adults (sHR, 17.6; 95% CI, 12.0-25.8). Certain cancer subsites were also associated with increased risk, including head and neck cancer (sHR, 1.5; 95% CI, 1.2-1.9).

CONCLUSIONS AND RELEVANCE

In this study, patients with cancer had a higher incidence of NFSI than suicide after diagnosis. Younger age, history of severe psychiatric illness, and prior self-injury were independently associated with risk of NFSI. These exposures appeared to act synergistically, placing young adults with a prior mental health history at the greatest risk of NFSI. These factors should be used to identify at-risk patients.

Suicidal ideation, distress, and related factors in a population of cancer patients treated in a general acute hospital

Purpose

Suicidality and suicidal ideation (SI) in oncology has long been an underestimated danger. Although there are cancer-specific distress screening tools available, none of these specifically incorporates items for SI. We examined the prevalence of SI in cancer patients, investigated the relation between SI and distress, and tried to identify additional associated factors.

Methods

A cross-sectional study with patients treated for cancer in a primary care hospital was conducted. Psychosocial distress and SI in 226 patients was assessed. An expert rating scale (PO-Bado-SF) and a self-assessment instrument (QSC-R23) were used to measure distress. SI was assessed with item 9 of the PHQ-9. Data was descriptively analyzed, and correlations and group comparisons between clinically distressed and non-distressed patients were calculated.

Results

SI was reported by 15% of patients. Classified as clinically distressed were 24.8% (QSC-R23) to 36.7% (PO-Bado-SF). SI was correlated with externally (r_τ = 0.19, p < 0.001) and self-rated distress (r_τ = 0.31, p < 0.001). Symptoms sufficiently severe for at least a medium major depressive episode were recorded in 23.5% of patients (PHQ-9). Factors associated with SI were feeling bad about oneself, feeling down, depressed, and hopeless, deficits in activities of daily life, psycho-somatic afflictions, social restrictions, and restrictions in daily life. Being in a steady relationship seemed to have a protective effect.

Conclusions

SI is common in cancer patients. Distress and associated factors are increased in patients with SI. A distress screening with the ability to assess SI could be an important step in prevention, but more research is necessary.

Supplementary Information

The online version contains supplementary material available at 10.1007/s00520-021-06429-w.

Oral health in patients with stroke: a meta-analysis of comparative studies

Objective: This meta-analysis systematically analyzed and compared oral health between stroke patients and controls.Data source: The electronic databases of PubMed, EMBASE, PsycINFO, Medline and Web of Science were independently searched by two authors from their inception to 14 June 2018.Study selection: Eleven studies comparing oral health between stroke patients (n = 1,742) and controls (n = 1,193) were analyzed.Data extraction: The full texts of the 11 studies were independently reviewed. Data on oral health were independently extracted by two authors.Data synthesis: Mean differences (MD) and 95% confidence intervals (CI) were calculated and synthesized using fixed or random-effects models, as appropriate. Compared to controls, stroke patients had poorer oral health: they had more Dental Caries (5 studies; MD = 2.89, 95% CI: 0.91-4.88, p= .04), but less Remaining Teeth scores (6 studies; MD = -2.93, 95% CI: -3.91, -1.95; p < .00001). Both the Plaque Index (3 studies; MD = 0.21, 95% CI: 0.14, 0.28; p < .00001) and Gingival Index scores (4 studies; MD = 0.22, 95% CI: 0.14, 0.30; p < .00001) were significantly higher in stroke patients, indicating worse periodontal status.Conclusions: Stroke patients had poorer overall oral health status compared to controls. Given the importance of oral health to overall health, further research on screening for oral health problems after stroke should be conducted and effective management strategies should be devised and implemented.

Interventions to prevent suicidal behavior and ideation for patients with cancer: A systematic review

OBJECTIVE

This study aimed to summarize interventions for suicide prevention in patients with cancer and highlight any methodological issues.

METHODS

We searched PubMed, PsycINFO, CINAHL, and the Cochrane database from their inception until July 2018. Additionally, we manually searched the references of included studies and recent systematic reviews of psychotherapy, antidepressants, and collaborative care for cancer patients with depression.

RESULTS

Of the 1365 retrieved articles, 11 randomized controlled trials and 11 intervention studies met the inclusion criteria. These were categorized by type of intervention: psychotherapy, pharmacotherapy, integrated collaborative care, muscle relaxation and therapeutic walking, and cancer treatment. The trials showed little evidence to confirm the effects of suicide prevention strategies. Seven trials were designed to assess the efficacy of interventions treating depression. In all studies, suicidal behavior or ideation was reported as one of the secondary outcomes. Three trials did not report information about suicidal ideation, despite assessing depressive symptoms using scales that contained suicidal ideation items. Most trials demonstrated inadequate study quality.

CONCLUSIONS

Our review summarized interventions for suicide prevention in patients with cancer and revealed methodological issues. The findings highlighted a need to explore new treatment strategies that focus on unique suicide risk factors among patients with cancer.