Management of hot flushes in UK breast cancer patients: clinician and patient perspectives

Treatment utilization and non-drug interventions for vasomotor symptoms in breast cancer survivors taking endocrine therapy: Real-world findings from the United States and Europe

OBJECTIVES

Vasomotor symptoms induced by endocrine therapy are common in breast cancer survivors and a risk factor for therapy discontinuation and lower quality of life. The REALISE study evaluated the real-world treatment landscape in breast cancer survivors with vasomotor symptoms taking endocrine therapy, including pharmaceuticals, lifestyle changes, and over-the-counter products.

STUDY DESIGN

Secondary analysis of the Adelphi Vasomotor Disease Specific Programme™, a large cross-sectional point-in-time survey and chart review conducted in the US and five European countries (February-October 2020). Oncologists provided demographic, clinical, and treatment data for adult breast cancer survivors with induced vasomotor symptoms taking endocrine therapy (tamoxifen or aromatase inhibitors); patients voluntarily completed self-report surveys on their symptom severity, concomitant sleep and/or mood symptoms, lifestyle changes, and use of over-the-counter products.

MAIN OUTCOME MEASURES

Patient characteristics; vasomotor symptom severity; use of pharmaceuticals, lifestyle changes, and over-the-counter products (from pre-defined lists); lines of treatment.

RESULTS

Overall, 77 oncologists reported data for 618 breast cancer survivors, of whom 183 (29.6 %) completed self-report forms. Physicians classified 420 (68.0 %) women as experiencing moderate-severe vasomotor symptoms, of whom 66.9 % were receiving treatment. In total, 15.2 % of all breast cancer survivors were prescribed systemic hormone therapy. Venlafaxine (24.7 %), citalopram (16.5 %), and paroxetine (13.6 %) were the most commonly prescribed nonhormonal medications. Lifestyle changes (77.8 %) and over-the-counter products (61.6 %) were common, especially in patients with concomitant sleep and/or mood symptoms.

CONCLUSIONS

Despite contraindications, a relatively large proportion of treatment-seeking breast cancer survivors with vasomotor symptoms were prescribed systemic hormone therapy. This, combined with high patient-reported use of lifestyle changes and over-the-counter products, suggests a need for symptomatic relief and demand for new nonhormonal alternatives with established safety profiles in this population.

Acupuncture in cancer care: recommendations for safe practice (peer-reviewed expert opinion)

BACKGROUND

Up-to-date recommendations for the safe practice of acupuncture in integrative oncology are overdue with new cancer treatments and an increase in survivors with late effects of disease; 17 years have elapsed since Filshie and Hester's 2006 guidelines. During 2022/2023 an expert panel assembled to produce updated recommendations aiming to facilitate safe and appropriate care by acupuncturists working with people with cancer.

METHODS

A core development team comprising three integrative oncology professionals comprehensively updated pre-existing unpublished recommendations. Twelve invited international experts (senior acupuncturists with and without experience of working in oncology settings, oncologists, physicians and nurses trained in integrative oncology, researchers, academics, and professional body representatives) reviewed the recommendations. In multiple iterations, the core team harmonised comments for final ratification. To aid dissemination and uptake the panel represents national and international integrative oncology associations and major cancer treatment centres in Europe, USA, Australia, and the Middle East.

RESULTS

These recommendations facilitate safe care by articulating contra-indications, cautions, and risks for patients both on and off treatment (surgery, SACT, radiotherapy). Situations where acupuncture may be contra-indicated or practices need adapting are identified. "Red and Amber Flags" highlight where urgent referral is essential.

CONCLUSION

These are the first international, multidisciplinary peer-reviewed recommendations for safe acupuncture practice in integrative oncology. Concerns about safety remain a significant barrier to appropriate referral from oncology teams, to use by acupuncturists and to uptake by patients. Disseminating trustworthy, widely accessible guidance should facilitate informed, confident practice of acupuncture in and outside of oncology healthcare settings.

Adherence to Adjuvant Endocrine Therapy in Breast Cancer Patients

BACKGROUND

Adjuvant endocrine therapy (AET) reduces breast cancer recurrence and mortality of women with hormone-receptor-positive tumors, but poor adherence remains a significant problem. The aim of this study was to analyze AET side effects and their impact on adherence to treatment.

METHODS

A total of 373 breast cancer patients treated with AET filled out a specific questionnaire during their follow up visits at the Breast Unit of our Centre.

RESULTS

Side effects were reported by 81% of patients, 84% of those taking tamoxifen and 80% of those taking aromatase inhibitors (AIs). The most common side effect in the tamoxifen group was hot flashes (55.6%), while in the AI group it was arthralgia (60.6%). The addition of GnRH agonists to both tamoxifen and AI significantly worsened all menopausal symptoms. Overall, 12% of patients definitively discontinued AET due to side effects, 6.4% during the first 5 years and 24% during extended therapy. Patients who had previously received chemotherapy or radiotherapy reported a significantly lower discontinuation rate.

CONCLUSIONS

AET side effects represent a significant problem in breast cancer survivors leading to irregular assumption and discontinuation of therapy. Adherence to AET may be improved by trustful patient-physician communication and a good-quality care network.

Using machine learning to predict individual patient toxicities from cancer treatments

PURPOSE

Machine learning (ML) is a powerful tool for interrogating datasets and learning relationships between multiple variables. We utilized a ML model to identify those early breast cancer (EBC) patients at highest risk of developing severe vasomotor symptoms (VMS).

METHODS

A gradient boosted decision model utilizing cross-sectional survey data from 360 EBC patients was created. Seventeen patient- and treatment-specific variables were considered in the model. The outcome variable was based on the Hot Flush Night Sweats (HFNS) Problem Rating Score, and individual scores were dichotomized around the median to indicate individuals with high and low problem scores. Model accuracy was assessed using the area under the receiver operating curve, and conditional partial dependence plots were constructed to illustrate relationships between variables and the outcome of interest.

RESULTS

The model area under the ROC curve was 0.731 (SD 0.074). The most important variables in the model were as follows: the number of hot flashes per week, age, the prescription, or use of drug interventions to manage VMS, whether patients were asked about VMS in routine follow-up visits, and the presence or absence of changes to breast cancer treatments due to VMS. A threshold of 17 hot flashes per week was identified as being more predictive of severe VMS. Patients between the ages of 49 and 63 were more likely to report severe symptoms.

CONCLUSION

Machine learning is a unique tool for predicting severe VMS. The use of ML to assess other treatment-related toxicities and their management requires further study.

Acupuncture in the real world: evaluating a 15-year NADA auricular acupuncture service for breast cancer survivors experiencing hot flushes and night sweats as a consequence of adjuvant hormonal therapies

PURPOSE

While clinical trials provide valuable data about efficacy of interventions, findings often do not translate into clinical settings. We report real world clinical outcomes of a 15-year service offering breast cancer survivors auricular acupuncture to manage hot flushes and night sweats (HFNS) associated with adjuvant hormonal treatments. This service evaluation aims to (1) assess whether usual practice alleviates symptoms in a clinically meaningful way and (2) compare these results with scientific evidence.

METHODS

Data were analysed from 415 referrals to a service offering women eight standardised treatments using the National Acupuncture Detoxification Association (NADA) protocol. Outcome measures administered at baseline, end of treatment (EOT), and 4 and 18 weeks after EOT included hot flush diaries, hot flush rating scale (HFRS) and women's health questionnaire (WHQ).

RESULTS

Over 2285 treatments were given to 300 women; 275 (92.3%) completed all eight treatments. Median daily frequency of HFNS reduced from 9.6 (IQR 7.3) to 5.7 (IQR 5.8) at EOT and 6.3 (IQR 6.5) 18 weeks after EOT. HFRS problem rating showed a clinically meaningful reduction of ≥ 2 points at all measurement points. WHQ showed improvements in several symptoms associated with the menopause. Two adverse events were reported, neither were serious. Results are comparable to published research.

CONCLUSION

This first analysis of a long-term auricular acupuncture service compares favourably with outcomes of other studies for reducing HFNS frequency and associated menopausal symptoms. In day-to-day clinical practice, NADA appears to be a safe effective intervention for breast cancer survivors.

Developing patient-centred strategies to optimize the management of vasomotor symptoms in breast cancer patients: a survey of health care providers

PURPOSE

Vasomotor symptoms (VMS) such as hot flashes and night sweats are common in breast cancer patients and can affect both quality of life and treatment adherence. However, there is limited practical data to guide clinicians in the optimal selection of therapeutic strategies. A survey of health care providers was performed to better understand perspectives and prescribing practices for managing this problem.

METHODS

Canadian health care providers who treat patients with early stage breast cancer (EBC) participated in an anonymous electronic survey. Participants provided their perspectives on the prevalence and severity of VMS among patients with EBC, outlined their management strategies, and provided feedback on the perceived efficacy of interventions for VMS.

RESULTS

Responses were received from 65 providers including breast oncologists (36/65, 55%) and nurses with oncology expertise (29/65, 45%). Seventy-seven percent of participants reported regularly asking patients about VMS, and most indicated that bothersome VMS occurred in the majority of patients. Health care providers cited hot flash severity and sleep disruption as the most important issues for patients. The most common first- and second-line interventions recommended were lifestyle modifications (n = 32/65, 49.2%) and pharmacologic strategies (n = 27/65, 41.5%), respectively. Most respondents felt that interventions, including pharmacologic, over-the-counter, and complementary therapies, were only "somewhat effective". Overall, half of respondents (n = 35/65, 54%) reported being "confident" in managing VMS.

CONCLUSION

Given the variability of treatment recommendations, and health care provider uncertainty around the benefits of therapies for VMS, more 'real-world' trials are needed to optimize patient care.

Specialist breast care nurses for support of women with breast cancer

BACKGROUND

Interventions by specialist breast cancer nurses (SBCNs) aim to support women and help them cope with the impact of the disease on their quality of life.

OBJECTIVES

To assess the effects of individual interventions carried out by SBCNs on indicators of quality of life, anxiety, depression, and participant satisfaction.

SEARCH METHODS

In June 2020, we searched MEDLINE, Embase, CENTRAL (Trials only), Cochrane Breast Cancer Group's Specialist Register (CBCG SR), CINAHL, PsycINFO, World Health Organization International Clinical Trials Registry Platform (WHO ICTRP) and Clinicaltrials.gov.

SELECTION CRITERIA

We selected randomised controlled trials (RCTs) of interventions carried out by SBCNs for women with breast cancer, which reported indicators of quality of life, anxiety, depression, and participant satisfaction.

DATA COLLECTION AND ANALYSIS

The certainty of the evidence was evaluated using the GRADE approach. A narrative description of the results including structured tabulation was carried out.

MAIN RESULTS

We included 14 RCTs involving 2905 women. With the exception of one study (women with advanced breast cancer), all the women were diagnosed with primary breast cancer. Mean age ranged from 48 to 64 years. Psychosocial nursing interventions compared with standard care for women with primary breast cancer Eight studies (1328 women, low-quality evidence) showed small improvements in general health-related quality of life or no difference in effect between nine weeks and 18 months. Six studies (897 women, low-quality evidence) showed small improvements in cancer-specific quality of life or no difference in effect between nine weeks and 18 months. Six studies (951 women, low-quality evidence) showed small improvements in anxiety and depression between nine weeks and 18 months. Two studies (320 women, low-quality evidence) measured satisfaction during survivorship; one study measured satisfaction only in the intervention group and showed high levels of satisfaction with care; the second study showed equal satisfaction with care in both groups at six months. Psychosocial nursing interventions compared with other supportive care interventions for women with primary breast cancer Two studies (351 women, very-low quality evidence) measured general health-related quality of life. One study reported that psychological morbidity reduced over the 12-month period; scores were consistently lower in women supported by SBCNs alone compared to support from a voluntary organisation. The other study reported that at six months, women receiving psychosocial support by either SBCNs or psychologists clinically improved from "higher levels of distress" to "lower levels of distress". One study (179 women, very-low quality evidence) showed no between-group differences on subscales at all time points up to six months measured using cancer-specific quality of life questionnaires. There were significant group-by-time changes in the global quality of life, nausea and vomiting, and systemic therapy side effects subscales, for women receiving psychosocial support by either SBCNs or psychologists at six months. There were improvements in other subscales over time in both groups. Systemic therapy side effects increased significantly in the psychologist group but not in the SBCN group. Sexual functioning decreased in both groups. Two studies (351 women, very-low quality evidence) measured anxiety and depression. One study reported that anxiety subscale scores and state anxiety scores improved over six months but there was no effect on depression subscale scores in the SBCN group compared to the psychologist group. There was no group-by-time interaction on the anxiety and depression or state anxiety subscales. The other study reported that anxiety and depression scores reduced over the 12-month post-surgery period in the SBCN group; scores were consistently lower in women supported by SBCNs compared to support from a voluntary organisation. SBCN-led telephone interventions delivering follow-up care compared with usual care for women with primary breast cancer Three studies (931 women, moderate-quality evidence) reported general health-related quality of life outcomes. Two studies reported no difference in psychological morbidity scores between SBCN-led follow-up care and standard care at 18 to 24 months. One trial reported no change in feelings of control scores between SBCN-led follow-up care and standard care at 12 months. Two studies (557 women, moderate-quality evidence) reported no between-group difference in cancer-specific quality of life at 18 to 24 months. A SBCN intervention conducted by telephone, as a point-of-need access to specialist care, did not change psychological morbidity compared to routine clinical review at 18 months. Scores for both groups on the breast cancer subscale improved over time, with lower scores at nine and 18 months compared to baseline. The adjusted mean differences between groups at 18 months was 0.7 points in favour of the SBCN intervention (P = 0.058). A second study showed no differences between groups for role and emotional functioning measured using cancer-specific quality of life questionnaires in a SBCN-led telephone intervention compared with standard hospital care, both with and without an educational group programme at 12 months. At 12 months, mean scores were 78.4 (SD = 16.2) and 77.7 (SD = 16.2) respectively for SBCN-led telephone and standard hospital follow-up. The 95% confidence interval difference at 12 months was -1.93 to 4.64. Three studies (1094 women, moderate-quality evidence) reported no between-group difference in anxiety between 12 and 60 months follow-up. One of these studies also measured depression and reported no difference in depression scores between groups at five years (anxiety: RR 1.8; 95% CI 0.6 to 5.1; depression: RR 1.7 95% CI 0.4 to 7.2). Four studies (1331 women, moderate-quality evidence) demonstrated high levels of satisfaction with SBCN-led follow-up care by telephone between 12 and 60 months. Psychosocial nursing interventions compared with usual care for women with advanced breast cancer One study (105 women, low-quality evidence) showed no difference in cancer-specific quality of life outcomes at 3 months.

AUTHORS' CONCLUSIONS

Evidence suggests that psychosocial interventions delivered by SBCNs for women with primary breast cancer may improve or are at least as effective as standard care and other supportive interventions, during diagnosis, treatment and survivorship. SBCN-led telephone follow-up interventions were equally as effective as standard care, for women with primary breast cancer.

Effectiveness of nurse-led group CBT for hot flushes and night sweats in women with breast cancer: Results of the MENOS4 randomised controlled trial

OBJECTIVE

Troublesome hot flushes and night sweats (HFNS) are experienced by many women after treatment for breast cancer, impacting significantly on sleep and quality of life. Cognitive behavioural therapy (CBT) is known to be effective for the alleviation of HFNS. However, it is not known if it can effectively be delivered by specialist nurses. We investigated whether group CBT, delivered by breast care nurses (BCNs), can reduce the impact of HFNS.

METHODS

We recruited women with primary breast cancer following primary treatment with seven or more HFNS/week (including 4/10 or above on the HFNS problem rating scale), from six UK hospitals to an open, randomised, phase 3 effectiveness trial. Participants were randomised to Group CBT or usual care (UC). The primary endpoint was HFNS problem rating at 26 weeks after randomisation. Secondary outcomes included sleep, depression, anxiety and quality of life.

RESULTS

Between 2017 and 2018, 130 participants were recruited (CBT:63, control:67). We found a 46% (6.9-3.7) reduction in the mean HFNS problem rating score from randomisation to 26 weeks in the CBT arm and a 15% (6.5-5.5) reduction in the UC arm (adjusted mean difference -1.96, CI -3.68 to -0.23, P = .039). Secondary outcomes, including frequency of HFNS, sleep, anxiety and depression all improved significantly.

CONCLUSION

Our results suggest that specialist nurses can be trained to deliver CBT effectively to alleviate troublesome menopausal hot flushes in women following breast cancer in the NHS setting.

Complementary and alternative medicine for natural and treatment-induced vasomotor symptoms: An overview of systematic reviews and meta-analyses

BACKGROUND AND PURPOSE

Vasomotor symptoms (VMS) are very common in menopausal populations and cancer patients and can cause physical and mental discomfort. We aim to summarize the findings of systematic reviews and meta-analyses (SRs/MAs) that assessed the effectiveness of complementary and alternative medicines(CAMs)on VMS to provide solid evidence for future practice.

METHODS

PubMed, Embase, the Cochrane Library, and Web of Science were searched from inception to May 2019 to identify relevant SRs/MAs. The methodological quality of SRs/MAs and evidence levels of the outcomes were assessed.

RESULTS

A total of 29 SRs/MAs were reviewed. Evidence has shown that acupuncture, hypnosis, paced respiration, cognitive behavioural therapy, genistein, soy isoflavones, S-equol, combined preparations of black cohosh, and omega-3 supplements could significantly reduce VMS. The methodological quality of the SRs/MAs was moderate or high.

CONCLUSION

CAMs might be beneficial for reducing VMS, but the evidence levels were not high. Several priorities for future practice were identified.

Quantitative comparison of drug efficacy in treating hot flashes in patients with breast cancer

OBJECTIVE

This study aimed to quantitatively evaluate drug efficacy and identify relevant factors that affect the relief of hot flashes in patients with breast cancer.

METHODS

A comprehensive literature search was performed using public databases. Randomized clinical studies on drug therapy for the treatment of hot flashes in patients with breast cancer were identified. A time-effect model was established, and crucial pharmacodynamic parameters, such as maximal efficacy (E_max) and onset time (ET₅₀), were used to reflect the differences in efficacy among the drugs.

RESULTS

Eighteen studies involving 5178 subjects were included. It was found that the baseline of hot flashes was an important factor for the E_max value of drugs. After correcting the baseline to the level of eight times per day, the E_max values of progesterone, selective serotonin reuptake inhibitors and serotonin-norepinephrine reuptake inhibitors (SSRIs/SNRIs), neuroleptic agents, tibolone, phytoestrogen, other types of drugs, and placebo were 8.3(95%CI 6.8, 9.9),5.1(95%CI 4.4, 5.7), 4.4(95%CI 3.6, 5.3), 4.0(95%CI 3.6, 4.3), 3.4(95%CI 2.4, 4.3), 2.5(95%CI 0.8, 4.2), and 2.7(95%CI 2.1, 3.3), respectively. The ET₅₀ of all the drugs were approximately 2-2.5 weeks, which was obviously longer than that of the placebo (1.2 weeks). When compared with the previously reported efficacy characteristics in natural menopausal women, no significant difference was found between the two populations.

CONCLUSIONS

Progesterone showed the highest efficacy, followed by SSRIs/SNRIs, neuroleptic agents, and tibolone, while phytoestrogen and other types of drugs showed no efficacy advantages. There is a significant association between the baseline of hot flashes and drug efficacy, while there was no significant difference between breast cancer patients and natural menopausal women.