Safety of Complementary and Alternative Medicine (CAM) treatment among children and young adults who suffer from adverse effects of conventional cancer treatment: A systematic review

Background:

Complementary and Alternative Medicine (CAM) is widely used around the world to treat adverse effects derived from cancer treatment among children and young adults. Parents often seek CAM to restore and maintain the child’s physical and emotional condition during and after cancer treatment.

Objectives:

The objectives of this review were (i) to identify literature that investigates CAM use for treating adverse effects of conventional cancer treatment, (ii) to investigate the safety of the included CAM modalities, and (iii) to evaluate the quality of included studies.

Methods:

Five scientific research databases were used to identify observational, quasi-experimental, and qualitative studies from January 1990 to May 2021. Included studies investigated the use of CAM to treat adverse effects of cancer treatment in childhood cancer.

Results:

Fifteen studies were included in this review. Ten quasi-experimental, 3 observational studies (longitudinal/prospective), 2 qualitative studies, and 1 study with a quasi-experimental and qualitative arm were identified. Less than half (n = 6; 40%) of the studies included reported adverse effects for the CAM modality being studied. Among the studies that reported adverse effects, they were mostly considered as direct risk, as 13% reported mainly bleeding and bruising upon acupuncture treatment, and dizziness with yoga treatment. All adverse effects were assessed as minor and transient. CAM modalities identified for treating adverse effects of cancer treatment were alternative medical systems, manipulative and body-based therapies, biologically-based therapies, and mind-body therapies. CAM modalities were used to alleviate anxiety, pain, toxicity, prevent trauma, and improve health-related quality of life, functional mobility, and physical activity levels. All studies assessed scored 70% or above according to the Joanna Briggs Institute critical appraisal for study quality checklists.

Conclusion:

Most of the studies (58.3%) included in this review did not report adverse effects from CAM modalities used to treat adverse effects of cancer treatment in children and young adults. This lack of safety information is of concern because parents need to know whether the modality represents an extra burden or harm to the child. To improve awareness about safety in the field, a universal and uniform reporting system for adverse effects in CAM research is needed.

Yoga for improving health-related quality of life, mental health and cancer-related symptoms in women diagnosed with breast cancer

BACKGROUND

Breast cancer is the cancer most frequently diagnosed in women worldwide. Even though survival rates are continually increasing, breast cancer is often associated with long-term psychological distress, chronic pain, fatigue and impaired quality of life. Yoga comprises advice for an ethical lifestyle, spiritual practice, physical activity, breathing exercises and meditation. It is a complementary therapy that is commonly recommended for breast cancer-related impairments and has been shown to improve physical and mental health in people with different cancer types.

OBJECTIVES

To assess effects of yoga on health-related quality of life, mental health and cancer-related symptoms among women with a diagnosis of breast cancer who are receiving active treatment or have completed treatment.

SEARCH METHODS

We searched the Cochrane Breast Cancer Specialised Register, MEDLINE (via PubMed), Embase, the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 1), Indexing of Indian Medical Journals (IndMED), the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) search portal and Clinicaltrials.gov on 29 January 2016. We also searched reference lists of identified relevant trials or reviews, as well as conference proceedings of the International Congress on Complementary Medicine Research (ICCMR), the European Congress for Integrative Medicine (ECIM) and the American Society of Clinical Oncology (ASCO). We applied no language restrictions.

SELECTION CRITERIA

Randomised controlled trials were eligible when they (1) compared yoga interventions versus no therapy or versus any other active therapy in women with a diagnosis of non-metastatic or metastatic breast cancer, and (2) assessed at least one of the primary outcomes on patient-reported instruments, including health-related quality of life, depression, anxiety, fatigue or sleep disturbances.

DATA COLLECTION AND ANALYSIS

Two review authors independently collected data on methods and results. We expressed outcomes as standardised mean differences (SMDs) with 95% confidence intervals (CIs) and conducted random-effects model meta-analyses. We assessed potential risk of publication bias through visual analysis of funnel plot symmetry and heterogeneity between studies by using the Chi² test and the I² statistic. We conducted subgroup analyses for current treatment status, time since diagnosis, stage of cancer and type of yoga intervention.

MAIN RESULTS

We included 24 studies with a total of 2166 participants, 23 of which provided data for meta-analysis. Thirteen studies had low risk of selection bias, five studies reported adequate blinding of outcome assessment and 15 studies had low risk of attrition bias.Seventeen studies that compared yoga versus no therapy provided moderate-quality evidence showing that yoga improved health-related quality of life (pooled SMD 0.22, 95% CI 0.04 to 0.40; 10 studies, 675 participants), reduced fatigue (pooled SMD -0.48, 95% CI -0.75 to -0.20; 11 studies, 883 participants) and reduced sleep disturbances in the short term (pooled SMD -0.25, 95% CI -0.40 to -0.09; six studies, 657 participants). The funnel plot for health-related quality of life was asymmetrical, favouring no therapy, and the funnel plot for fatigue was roughly symmetrical. This hints at overall low risk of publication bias. Yoga did not appear to reduce depression (pooled SMD -0.13, 95% CI -0.31 to 0.05; seven studies, 496 participants; low-quality evidence) or anxiety (pooled SMD -0.53, 95% CI -1.10 to 0.04; six studies, 346 participants; very low-quality evidence) in the short term and had no medium-term effects on health-related quality of life (pooled SMD 0.10, 95% CI -0.23 to 0.42; two studies, 146 participants; low-quality evidence) or fatigue (pooled SMD -0.04, 95% CI -0.36 to 0.29; two studies, 146 participants; low-quality evidence). Investigators reported no serious adverse events.Four studies that compared yoga versus psychosocial/educational interventions provided moderate-quality evidence indicating that yoga can reduce depression (pooled SMD -2.29, 95% CI -3.97 to -0.61; four studies, 226 participants), anxiety (pooled SMD -2.21, 95% CI -3.90 to -0.52; three studies, 195 participants) and fatigue (pooled SMD -0.90, 95% CI -1.31 to -0.50; two studies, 106 participants) in the short term. Very low-quality evidence showed no short-term effects on health-related quality of life (pooled SMD 0.81, 95% CI -0.50 to 2.12; two studies, 153 participants) or sleep disturbances (pooled SMD -0.21, 95% CI -0.76 to 0.34; two studies, 119 participants). No trial adequately reported safety-related data.Three studies that compared yoga versus exercise presented very low-quality evidence showing no short-term effects on health-related quality of life (pooled SMD -0.04, 95% CI -0.30 to 0.23; three studies, 233 participants) or fatigue (pooled SMD -0.21, 95% CI -0.66 to 0.25; three studies, 233 participants); no trial provided safety-related data.

AUTHORS' CONCLUSIONS

Moderate-quality evidence supports the recommendation of yoga as a supportive intervention for improving health-related quality of life and reducing fatigue and sleep disturbances when compared with no therapy, as well as for reducing depression, anxiety and fatigue, when compared with psychosocial/educational interventions. Very low-quality evidence suggests that yoga might be as effective as other exercise interventions and might be used as an alternative to other exercise programmes.

YOCAS©® Yoga Reduces Self-reported Memory Difficulty in Cancer Survivors in a Nationwide Randomized Clinical Trial: Investigating Relationships Between Memory and Sleep

Background. Interventions are needed to alleviate memory difficulty in cancer survivors. We previously showed in a phase III randomized clinical trial that YOCAS©® yoga—a program that consists of breathing exercises, postures, and meditation—significantly improved sleep quality in cancer survivors. This study assessed the effects of YOCAS©® on memory and identified relationships between memory and sleep. Study design and methods. Survivors were randomized to standard care (SC) or SC with YOCAS©® . 328 participants who provided data on the memory difficulty item of the MD Anderson Symptom Inventory are included. Sleep quality was measured using the Pittsburgh Sleep Quality Index. General linear modeling (GLM) determined the group effect of YOCAS©® on memory difficulty compared with SC. GLM also determined moderation of baseline memory difficulty on postintervention sleep and vice versa. Path modeling assessed the mediating effects of changes in memory difficulty on YOCAS©® changes in sleep and vice versa. Results. YOCAS©® significantly reduced memory difficulty at postintervention compared with SC (mean change: yoga=−0.60; SC=−0.16; P<.05). Baseline memory difficulty did not moderate the effects of postintervention sleep quality in YOCAS©® compared with SC. Baseline sleep quality did moderate the effects of postintervention memory difficulty in YOCAS©® compared with SC (P<.05). Changes in sleep quality was a significant mediator of reduced memory difficulty in YOCAS©® compared with SC (P<.05); however, changes in memory difficulty did not significantly mediate improved sleep quality in YOCAS©® compared with SC. Conclusions. In this large nationwide trial, YOCAS©® yoga significantly reduced patient-reported memory difficulty in cancer survivors.

Yoga for Children and Adolescents After Completing Cancer Treatment

Survivors of childhood cancer may experience persistent symptoms, including fatigue, sleep disturbance, and balance impairment. Yoga is a complementary therapy that improves fatigue, sleep, and quality of life in adult cancer survivors. Using a one group, repeated measures design, we evaluated the feasibility of a yoga program and assessed if cancer survivor participants ages 10 to 17 years (n = 13) had significantly less fatigue and anxiety, and better balance and sleep, after a 6-week yoga intervention compared with a 6-week pre-intervention wait period. Study recruitment was challenging with a 32% enrollment rate; yoga attendance was 90%. None of the scores for anxiety, fatigue, sleep, and balance had significant changes during the wait period. After the 6-week yoga program, children (n = 7) had a significant decrease in anxiety score ( P = .04) while adolescent scores (n = 7) showed a decreasing trend ( P = .10). Scores for fatigue, sleep, and balance remained stable post-intervention. Fatigue and balance scores were below norms for health children/adolescents while sleep and anxiety scores were similar to healthy peers.

Randomised controlled trials of yoga interventions for women with breast cancer: a systematic literature review

PURPOSE

Yoga is increasingly used as a complementary therapy to manage disease and treatment-related side effects in patients with cancer and has resulted in an increase in the number of studies exploring the effectiveness of yoga interventions. This systematic review examines whether yoga interventions provide any measurable benefit, both physically and psychologically, for women with breast cancer. The results will inform future research in this field and advance the development of yoga programmes.

METHODS

We performed electronic searches of MEDLINE, PsychINFO, the Cochrane Library, Embase, CINAHL, AMED, Web of Science and Scopus for articles published up to June 2012. Only randomised controlled trials (RCTs) were included and methodological quality rating scores were determined using the PEDro (Physiotherapy Evidence Database) Scale.

RESULTS

One hundred thirty-two studies were identified through a systematic search of eight electronic databases. Only published manuscripts that employed a RCT design were included (n = 18). The sample sizes for these studies varied widely from 18 to 164 participants and the associated PEDro scores ranged from 1 (poor) to 8 (good). All 18 studies reported positive effects for treatment-related side effects in favour of the yoga interventions, with the greatest impact on global quality of life (QoL) scores and emotional well-being.

CONCLUSION

Results from the few RCTs suggest there is moderate to good evidence that yoga may be a useful practice for women recovering from breast cancer treatments. Large-scale RCTs using objective measures and patient-reported outcomes with long-term follow-up are needed to substantiate whether the benefits are true and sustainable.

Troublesome symptoms in cancer survivors: fatigue, insomnia, neuropathy, and pain

Patients with cancer suffer from a variety of symptoms associated with both cancer and its treatment. These symptoms may lead to a decreased quality of life for patients and can affect compliance with cancer therapies. The importance of adequately treating cancer-related symptoms is gaining more attention but, overall, many symptoms remain underdiagnosed and undertreated. Fatigue, insomnia, neuropathy, and pain are among the most common troublesome symptoms experienced by cancer survivors. This article will focus on the management of these symptoms, including an assessment of the current research and proposed best- management practices.

A qualitative exploration of the impact of yoga on breast cancer survivors with aromatase inhibitor-associated arthralgias

RESEARCH QUESTION

Arthralgia affects postmenopausal breast cancer survivors (BCS) receiving aromatase inhibitors (AI), which may result in reduced function and long-term well-being. This is an exploratory, qualitative investigation of BCS who participated in a yoga-based program to understand impact on joint pain and various aspects of quality of life (QOL) through a yoga program.

THEORETICAL FRAMEWORK

Social cognitive theory was used and provided the foundation for developing a yoga intervention through sources of efficacy information: (1) performance accomplishment, (2) structured experience, (3) verbal support from instructor and group, and (4) physical feedback.

METHODOLOGY

Ten postmenopausal women with stage I-III breast cancer and AI associated arthralgia (AIAA) received yoga twice a week for eight weeks for 90 minutes and were instructed to continue in a home-based yoga program. We used social cognitive theory (SCT) to structure a yoga intervention as an ongoing physical activity to manage joint pain and function. Participants completed journal reflections on their experience and received weekly phone calls.

ANALYSIS

Data was collected and analyzed using qualitative methods. Member checks were completed and emergent themes were explored and agreed upon by the research team to ensure reliability and validity of data. Several emergent themes were discovered: Empowerment: Importance of Camaraderie, Community, and Sharing; Pain Relief; Increased Physical Fitness (Energy, Flexibility, and Function); Relieved Stress/Anxiety and Transferability of Yoga through Breathing. These themes were identified through instructor observation, participant observation, and weekly phone call documentation.

INTERPRETATION

Participants experienced an eight-week yoga intervention as an effective physical activity and support group that fostered various improvements in quality of life (QOL) and reduction in AIAA. Participants were highly motivated to improve physical fitness levels and reduce pain. This study revealed benefits from alternative forms of exercise such as yoga to provide a structure, which is transferable in other situations. Information, structured physical guidance in yoga postures, support, and feedback are necessary to foster physical activity for BCS experiencing pain.

IMPLICATIONS FOR CANCER SURVIVORS

Results of this qualitative analysis indicate that interventions to support BCS with AIAA are warranted. Yoga appears to positively impact these side effects of hormonal therapies. Additional research would aid in the development of other interventions.

Clinical trials in integrative therapies

OBJECTIVES

To review clinical trials in natural products and mind-body therapies for oncology symptom management, to discuss issues related to developing clinical trials in this area, and outline examples of rigorous and innovative study design.

DATA SOURCES

Peer reviewed literature.

CONCLUSION

Most of the evidence for the integrative therapies reviewed is derived from phase II trials, and is considered preliminary. More research is needed in these therapies to clearly articulate their role in the management of oncology symptoms. Innovative strategies and methodologies for studying integrative therapies have been demonstrated.

IMPLICATIONS FOR NURSING PRACTICE

It is necessary to critically evaluate the literature to be able to educate patients about integrative therapies. Investigators should expand on well-designed studies that demonstrate clinically important effects. Dissemination trials may be a good strategy, once data exists, to move integrative therapies into the care of patients.

Mind-body therapies in integrative oncology

There is growing interest in mind-body therapies as adjuncts to mainstream cancer treatment, and an increasing number of patients turn to these interventions for the control of emotional stress associated with cancer. Increased research funding has enabled many such interventions to be evaluated for their efficacy, including studies of mind-body interventions to reduce pain, anxiety, insomnia, anticipatory, and treatment-related nauseas, hot flashes, and improved mood. Mind-body treatments evaluated for their utility in oncology include relaxation therapies, biofeedback, meditation and hypnosis, yoga, art and music therapy, tai chi, and qigong. Although studies are not always methodologically sound and results mixed, a growing number of well-designed studies provide convincing evidence that mind-body techniques are beneficial adjuncts to cancer treatment. The evidence is sufficient to recommend further investigation and adoption of these techniques in mainstream oncology care.

Clinical cancer advances 2010: annual report on progress against cancer from the American Society of Clinical Oncology

A MESSAGE FROM ASCO'S PRESIDENT

Like many health professionals who care for people with cancer, I entered the field because of specific patients who touched my heart. They still do. In an effort to weave together my personal view of what the American Society of Clinical Oncology (ASCO) stands for and the purpose the organization serves, my presidential theme this year is “Patients. Pathways. Progress.” Patients come first. Caring for patients is the most important, rewarding aspect of being an oncology professional. At its best, the relationship between doctor and patient is compassionate and honest—and a relationship of mutual respect. Many professional organizations have an interest in cancer, but no other society is so focused on the entire spectrum of cancer care, education, and research. Nor is any other society as particularly interested in bringing new treatments to our patients through clinical trials as ASCO is. Clinical trials are the crux for improving treatments for people with cancer and are critical for continued progress against the disease. “Pathways” has several meanings. Some pathways are molecular—like the cancer cell's machinery of destruction, which we have only begun to understand in recent years. But there are other equally important pathways, including the pathways new therapies follow as they move from bench to bedside and the pathways patients follow during the course of their diseases. Improved understanding of these pathways will lead to new approaches in cancer care, allowing doctors to provide targeted therapies that deliver improved, personalized treatment. The best pathway for patients to gain access to new therapies is through clinical trials. Trials conducted by the National Cancer Institute's Cooperative Group Program, a nationwide network of cancer centers and physicians, represent the United States' most important pathway for accelerating progress against cancer. This year, the Institute of Medicine released a report on major challenges facing the Cooperative Group Program. Chief among them is the fact that funding for the program has been nearly flat since 2002. ASCO has called for a doubling of funding for cooperative group research within five years and supports the full implementation of the Institute of Medicine recommendations to revitalize the program. ASCO harnesses the expertise and resources of its 28,000 members to bring all of these pathways together for the greater good of patients. Progress against cancer is being made every day—measurable both in our improved understanding of the disease and in our ability to treat it. A report issued in December 2009 by the National Cancer Institute, the Centers for Disease Control and Prevention, the American Cancer Society, and the North American Association of Central Cancer Registries found that rates of new diagnoses and rates of death resulting from all cancers combined have declined significantly in recent years for men and women overall and for most racial and ethnic populations in the United States. The pace of progress can be and needs to be hastened. Much remains to be done. Sustained national investment in cancer research is needed to bring better, more effective, less toxic treatments to people living with cancer. Pathways to progress continue in the clinic as doctors strive to find the right treatments for the right patients, to understand what represents the right treatments, and to partner with patients and caregivers for access to those treatments. This report demonstrates that significant progress is being made on the front lines of clinical cancer research. But although our nation's investment in this research is paying off, we must never forget the magnitude of what lies ahead. Cancer remains the number two killer of Americans. Future progress depends on continued commitment, from both ASCO and the larger medical community. George W. Sledge Jr, MD President American Society of Clinical Oncology