Clinical pharmacology of oncology agents in older adults: A comprehensive review of how chronologic and functional age can influence treatment-related effects

Geriatric Assessment in the Era of Targeted and Immunotherapy

Cancer is a disease that mostly affects older adults and because of the aging of the population, the number of older adults diagnosed with cancer will increase significantly around the world. With increasing age, more older adults are living with frailty, and this may impact the tolerability of cancer treatments. International guidelines, such as the American Society for Clinical Oncology geriatric oncology guideline, recommend a geriatric assessment and management for all older adults with cancer to support the treatment decision-making process as well as develop a plan for supportive care interventions to support the older adults during cancer treatments. While there is clinical trial evidence to support a geriatric assessment and management for older adults receiving chemotherapy, there is less evidence to support a geriatric assessment for older adults starting immunotherapy. There are increasing numbers of new immunotherapies and targeted therapies available for older adults with cancer but often few older adults have been included in the clinical trials, leaving less evidence for clinicians to guide treatment decisions. In this current opinion, we review the current evidence on the use of a geriatric assessment and management in the context of immunotherapy and targeted therapy. We review how a geriatric assessment could support older adults making treatment decisions for immunotherapy, review how geriatric assessment parameters are linked with outcomes and provide guidance on how geriatric assessment can guide the supportive care plan during immunotherapy treatment.

Clinical trials in older patients with cancer - typical challenges, possible solutions, and a paradigm of study design in breast cancer

BACKGROUND AND PURPOSE

While the prevalence of older breast cancer patients is rapidly increasing, these patients are greatly underrepresented in clinical trials. We discuss barriers to recruitment of older patients to clinical trials and propose solutions on how to mitigate these challenges and design optimal clinical trials through the paradigm of IMPORTANT trial.

PATIENTS AND METHODS

This is a narrative review of the current literature evaluating barriers to including older breast cancer patients in clinical trials and how mitigating strategies can be implemented in a pragmatic clinical trial.

RESULTS

The recognized barriers can be roughly divided into trial design-related (e.g. the adoption of strict inclusion criteria, the lack of pre-specified age-specific analysis), patient-related (e.g. lack of knowledge, valuation of the quality-of-life instead of survival, transportation issues), or physician-related (e.g. concern for toxicity). Several strategies to mitigate barriers have been identified and should be considered when designing a clinical trial dedicated to older patients with cancer. The pragmatic, de-centralized IMPORTANT trial focusing on dose optimization of CDK4/6 -inhibitors in older breast cancer patients is a paradigm of a study design where different mitigating strategies have been adopted.

INTERPRETATION

Because of the existing barriers, older adults in clinical trials are considerably healthier than the average older patients treated in clinical practice. Thus, the study results cannot be generalized to the older population seen in daily clinical practice. Broader inclusion/exclusion criteria, offering telehealth visits, and inclusion of patient-reported, instead of physician-reported outcomes may increase older patient participation in clinical trials.

Adjuvant chemotherapy and survival outcomes in older women with HR+/HER2- breast cancer: a propensity score-matched retrospective cohort study using the SEER database

OBJECTIVES

This study aimed to investigate the impact of adjuvant chemotherapy (ACT) on survival outcomes in older women with hormone receptor-positive and human epidermal growth factor receptor 2-negative (HR+/HER2-) breast cancer (BC).

DESIGN

A retrospective cohort study using data from the Surveillance, Epidemiology, and End Results database, which contains publicly available information from US cancer registries.

SETTING AND PARTICIPANTS

The study included 45 762 older patients with BC aged over 65 years diagnosed between 2010 and 2015.

METHODS

Patients were divided into two groups based on age: 65-79 years and ≥80 years. Propensity score matching (PSM) was employed to balance clinicopathological characteristics between patients who received ACT and those who did not. Data analysis used the χ2 test and Kaplan-Meier method, with a subgroup analysis conducted to identify potential beneficiaries of ACT.

OUTCOME MEASURES

Overall survival (OS) and cancer-specific survival (CSS).

RESULTS

Due to clinicopathological characteristic imbalances between patients with BC aged 65-79 years and those aged ≥80 years, PSM was used to categorise the population into two groups for analysis: the 65-79 years age group (n=38 128) and the ≥80 years age group (n=7634). Among patients aged 65-79 years, Kaplan-Meier analysis post-PSM indicated that ACT was effective in improving OS (p<0.05, HR=0.80, 95% CI 0.73 to 0.88), particularly in those with advanced disease stages, but did not show a significant benefit in CSS (p=0.09, HR=1.13, 95% CI 0.98 to 1.31). Conversely, for patients aged ≥80 years, ACT did not demonstrate any improvement in OS (p=0.79, HR=1.04, 95% CI 0.79 to 1.36) or CSS (p=0.09, HR=1.46, 95% CI 0.69 to 2.26) after matching. Subgroup analysis also revealed no positive impact on OS and CSS.

CONCLUSIONS

Patients with HR+/HER2- BC ≥80 years of age may be considered exempt from ACT because no benefits were found in terms of OS and CSS.

Disparities in treatment modalities and survival among older patients with high-grade serous ovarian cancer

BACKGROUND

Undertreatment of ovarian cancer is common among older women. We aimed to evaluate the treatment modalities offered to older patients and their impact on overall survival (OS).

METHODS

The study identified 5,055 patients with high-grade serous ovarian cancer and 3584 patients with advanced stage (IIIC + IV) disease from the Surveillance, Epidemiology, and End Results (SEER) database from January 1, 2010, to December 31, 2017. We performed comparisons of OS and ovarian cancer-specific survival (OCSS) across age groups using a Cox proportional hazards model.

RESULTS

Very elderly patients (≥ 75 years old) received treatment with significantly less surgical complexity, such as no lymphadenectomy (59.7% vs. 48.6%; p < 0.001) and a lower rate of optimal debulking surgery (44.0% vs. 52.7%; p < 0.001), as well as lower rates of chemotherapy (78.2% vs. 89.4%; P<0.001) and standard treatment (70.6% vs. 85%; p < 0.001). High proportions of both very elderly and elderly patients received neoadjuvant chemotherapy (NACT), with no significant difference (38.7% vs. 36.2%; P = 0.212). Patients aged ≥ 75 years had significantly worse OS and OCSS.

CONCLUSION

With increasing age, the survival rate of women with ovarian cancer decreases significantly. Noticeably fewer ovarian cancer patients aged over 75 years receive standard treatments, and more very elderly patients are treated with NACT.

Association of polypharmacy with all-cause mortality and adverse events among elderly colorectal cancer survivors

BACKGROUND

The risk of inappropriate drug exposure in elderly colorectal cancer (CRC) survivors after the initial cancer treatment has not been well studied. This study investigated the association of polypharmacy (PP) with overall survival, hospitalization, and emergency room (ER) visits among older CRC survivors.

METHODS

A retrospective cohort study was conducted using the Korean National Health Insurance claims data follow-up from 2002 to 2017. Participants comprised those aged ≥65 years who were hospitalized with a diagnosis of CRC received cancer treatment and survived at least 2 years from the initial CRC diagnosis between 2003 and 2012. PP was defined based on the number of individual drugs during the third year, after 2 years of survival since the initial cancer treatment. PP was categorized as follows: non-PP (zero to four prescribed drugs); PP (five to nine drugs), and excessive PP (≥10 drugs). Main outcomes are all-cause mortality, hospitalization, and ER visits.

RESULTS

Of the 55,228 participants, 44.5% died, 83.1% were hospitalized, and 46.1% visited the ER. The PP and excess PP groups showed increased risk of all-cause mortality, hospitalization, and ER visit compared with the low PP group, and was highly associated among groups including patients aged 65 to 74 years and those in low-level frailty groups.

CONCLUSIONS

These risks can be minimized by increasing awareness and enhancing behaviors among health care professionals, especially clinician and pharmacists, to be aware of potential drug interactions, review, and ongoing monitoring.

PLAIN LANGUAGE SUMMARY

The risk of inappropriate drug exposure in older colorectal cancer (CRC) survivors after the initial cancer treatment has not been well studied. Polypharmacy was associated with adverse outcomes, including all-cause mortality, hospitalization, and emergency room visits among older CRC survivors and it was particularly associated with those who were 65 to 75 years and those with low risk of frailty. When prescribing drugs, physicians should be mindful of finding a balance between adequate treatment of diseases and avoiding adverse drug effects in survivors of CRC.

Impact of pharmaceutical care interventions on multidisciplinary care of older patients with cancer: A systematic review

INTRODUCTION

Optimizing medication use is a major issue in older patients with cancer and pharmacists are increasingly involved in their multidisciplinary care. The implementation of pharmaceutical care interventions must be supported by impact evaluations to enable their development and funding. This systematic review aims to synthesize evidence on the impact of pharmaceutical care interventions in older patients with cancer.

MATERIALS AND METHODS

A comprehensive search was performed in the PubMed/Medline, Embase, and Web of Science databases, for articles reporting evaluations of pharmaceutical care interventions for patients with cancer aged 65 years or older.

RESULTS

Eleven studies met the selection criteria. Most pharmacists were part of multidisciplinary geriatric oncology teams. Whether in outpatient or inpatient settings, interventions had common components, including patient interview, medication reconciliation, and comprehensive medication review to assess drug-related problems (DRPs). DRPs were identified in 95% of patients with 1.7 to 3 DRPs on average. Pharmacist recommendations resulted in a 20-40% reduction in the total number of DRPs and a 20-25% decrease in the prevalence of DRP. Prevalence of potentially inappropriate or omitted medications and their subsequent deprescribing or addition varied greatly between studies, notably depending on detection tools used. Clinical impact was insufficiently evaluated. Only one study reported a reduction of anticancer treatment toxicities following a joint pharmaceutical and geriatric assessment. A single economic evaluation calculated a potential net benefit of $3,864.23 per patient resulting from the intervention.

DISCUSSION

These encouraging results must be confirmed by more robust evaluations to support the involvement of pharmacists in multidisciplinary care of older patients with cancer.

Geriatric assessment for older patients with breast cancer: A single-institution study

Introduction

Although geriatric assessment (GA) has been used for a long time in the field of geriatrics and internal medicine, there are few studies on its application in the field of breast surgery. Therefore, the utility of specific GA domains for the assessment of older patients with breast cancer remains unclear. The aim of the present study was to evaluate the association between specific GA domains and the survival rate of older patients with breast cancer.

Methods

We used the database of Peking Union Medical College Hospital to identify older patients who were newly diagnosed with breast cancer between 2012 and 2018 and retrospectively analysed the data of 541 patients aged ≥65 years. Patients with metastatic cancer and those with missing vital status data were excluded. The primary outcomes were overall survival (OS) and breast cancer-specific survival. The GA domains used in this study included functional status, comorbidities, and psychological state. Multivariate regression analysis was used to estimate hazard ratios for these three domains.

Results

After a median follow-up of 72 months, we observed a significant relationship between functional impairment and mortality (adjusted HR: 3.06, 95% confidence interval [CI]: 1.83-5.10, P<0.001). Similarly, patients with severe comorbidities (adjusted HR: 2.35; 95% CI: 1.16-4.75, P=0.017) and an impaired psychological state (adjusted HR: 2.82, 95% CI: 1.45-5.50, P=0.002) showed worse OS rates. Accordingly, addition of the three GA domains to the basic model, which included age, tumour stage, lymph node stage, and intrinsic molecular subtype as baseline variables, yielded higher C-statistics for mortality analysis (from 0.713 to 0.740).

Conclusion

To our knowledge, this is the first study to include specific GA domains in a prognostic model for older patients with breast cancer in China. Three domains, namely functional status, comorbidities, and psychological state, should be considered for survival analyses in this particular population. The full model including these three GA domains may be more accurate in predicting the survival of older patients with breast cancer.

Management of chemotherapy dose intensity for metastatic colorectal cancer (Review)

Chemotherapy dose intensity is a momentous parameter of antitumor clinical medication. In certain clinical trials, the actual application dose of the chemotherapeutic drugs is frequently different from the prescribed dose. The chemotherapy dose intensity completed in different trials is also variable, which has an impact on the treatment efficacy, disease prognosis and patient safety. When these agents are tested in the population, chemotherapy reduction and delay or failure to complete the planned cycle constantly occur due to age, performance status, adverse reactions and other reasons, resulting in the modification of the chemotherapy dose intensity. The present review analyzed the correlation between the chemotherapy dose intensity and the incidence of adverse reactions, the treatment efficacy and disease prognosis in clinical trials of metastatic colorectal cancer. Moreover, the clinical applications of chemotherapy dose intensity were discussed. Based on individual differences, the present review analyzed the clinical trials that examined the efficacy of the chemotherapy dose intensity in different patient populations. The conclusions suggested that different populations require a specific dose intensity to reduce treatment toxicity without affecting the curative effect.

Perspectives and limits of cancer treatment in an oldest old population

BACKGROUND

Population of oldest old will grow dramatically in the next future and cancer, physiologically related to aging, will be very prevalent among them. Lack of evidence is a huge problem to manage cancer in oldest old and will be more and more in the next years.

AIMS

Our purpose was to investigate the characteristics of a population of oldest old patients with cancer treated in the Radiation Oncology Unit of Fondazione Policlinico A. Gemelli IRCCS.

METHODS

We conducted a retrospective study. The primary outcome was to evaluate which characteristics of the population could influence the choice of oncological treatment (with radical or non-radical intent).

RESULTS

We identified a total of 348 patients: 140 were on follow-up; 177 were under treatment; 31 were considered not eligible for treatments. Patients under treatment had a high comorbidity index (mean Charlson Comorbidity Index 5.4), and a high prevalence of polypharmacy (mean number of drugs 5.6). More than half (53.1%) was treated with radical intent. Patients treated with radical intent were 1 year younger (87.1 years old vs 88.1 years old), more performant (ECOG 0.7 vs 1.3), and had less prevalence of metastatic neoplasia (6.4% vs 34.9%); comorbidities and drugs did not show differences in the two groups.

CONCLUSION

Oldest old, usually not considered in international guidelines, are treated for oncological disease, often with radical intent. The treatment seems not to be tailored considering comorbidities but on performance status.

Anthracycline-related cardiotoxicity in older patients with acute myeloid leukemia: a Young SIOG review paper

The incidence of acute myeloid leukemia (AML) increases with age. Intensive induction chemotherapy containing cytarabine and an anthracycline has been part of the upfront and salvage treatment of AML for decades. Anthracyclines are associated with a significant risk of cardiotoxicity (especially anthracycline-related left ventricular dysfunction [ARLVD]). In the older adult population, the higher prevalence of cardiac comorbidities and risk factors may further increase the risk of ARLVD. In this article of the Young International Society of Geriatric Oncology group, we review the prevalence of ARLVD in patients with AML and factors predisposing to ARLVD, focusing on older adults when possible. In addition, we review the assessment of cardiac function and management of ARLVD during and after treatment. It is worth noting that only a minority of clinical trials focus on alternative treatment strategies in patients with mildly declined left ventricular ejection fraction or at a high risk for ARLVD. The limited evidence for preventive strategies to ameliorate ARLVD and alternative strategies to anthracycline use in the setting of cardiac comorbidities are discussed. Based on extrapolation of findings from younger adults and nonrandomized trials, we recommend a comprehensive baseline evaluation of cardiac function by imaging, cardiac risk factors, and symptoms to risk stratify for ARLVD. Anthracyclines remain an appropriate choice for induction although careful risk-stratification based on cardiac disease, risk factors, and predicted chemotherapy-response are warranted. In case of declined left ventricular ejection fraction, alternative strategies should be considered.

Research priorities to address polypharmacy in older adults with cancer

Polypharmacy poses a significant public health problem that disproportionately affects older adults (≥65 years) since this population represents the largest consumers of medications. Clinicians caring for older adults with cancer must rely on evidence to understand polypharmacy and its implications, not only to communicate with patients and other healthcare providers, but also because of the significant interplay between polypharmacy, cancer, cancer-related treatment, and clinical outcomes. Interest in polypharmacy is rising because of its prevalence, the origins and facilitating factors behind it, and the direct and indirect clinical outcomes associated with it. The growing body of publications focused on polypharmacy in older adults with cancer demonstrates that this is a significant area of research; however, limited evidence exists to guide medication use (e.g., prescribing, administration) in this population. Currently, research priorities aimed at polypharmacy in the field of geriatric oncology lack clarity. We identified current gaps in the literature in order to establish research priorities for polypharmacy in older adults with cancer. The five research priorities-Polypharmacy Methodology and Definitions, Suboptimal Medication Use, Comorbidities and Geriatric Syndromes, Underrepresented Groups, and Polypharmacy Interventions-highlight critical areas for future research to improve outcomes for older adults with cancer.

Comprehensive geriatric assessment in older adults with cancer: Recommendations by the Italian Society of Geriatrics and Gerontology (SIGG)

INTRODUCTION

Optimizing the approach to older adults with cancer is now a priority given the increasing frequency of new cancer diagnoses that are made in the older population. The comprehensive geriatric assessment (CGA) represents the gold-standard for (1) defining prognosis and ability to withstand cancer treatments, (2) exploring the multiple aspects that define the complexity of frail older persons, and (3) designing person-tailored interventions.

MATERIALS AND METHODS

In this document, based on a comprehensive revision of the literature, the Italian Society for Geriatrics and Gerontology proposes a CGA model (ONCOGER CGA) to be adopted by oncology centers for their routine approach to older patients with cancer.

RESULTS AND DISCUSSION

A widespread use of this standardized CGA format will facilitate comparisons across institutions, promote studies based on a multidimensional patient assessment, and foster the inclusion of geriatric endpoints in oncological clinical trials. Furthermore, we predict that the use of a standardized CGA approach will increase the integration of geriatricians into oncology care teams with the final result of improving therapeutic choices and clinical outcomes.

Clinical characteristics and outcomes among 2347 patients aged ≥85 years with major lymphoma subtypes: a Nordic Lymphoma Group study

There is a lack of data regarding treatment and prognosis for the growing group of oldest old patients with lymphoma. Therefore, we studied 2347 patients aged ≥85 years from the Danish and Swedish lymphoma registers 2000–2016 (Denmark) and 2007–2013 (Sweden). Outcome was assessed using relative survival (RS). The 2‐year RS overall for patients with aggressive lymphomas was 38% [95% confidence interval (CI) 35–42%], of whom 845 (66%) patients received active treatment (chemotherapy, radiotherapy, immunotherapy, other). For aggressive lymphomas, not receiving active treatment was associated with an inferior 2‐year RS of 12% (95% CI 9–17%) compared to 49% (95% CI 45–53%) for patients who received active treatment (excess mortality rate ratio 2·84, 95% CI 2·3–3·5; P < 0·0001). For patients with indolent lymphoma, the 2‐year RS was 77% (95% CI 72–82%). Here, 383 (46%) patients received active treatment at diagnosis, but did not have better 2‐year RS (75%, 95% CI 67–81%) compared to those who did not receive active treatment (83%, 95% CI 74–89%). We conclude that outcomes for the oldest old patients with lymphoma are encouraging for several subtypes and that active treatment is associated with improved outcome amongst the oldest old patients with aggressive lymphomas, indicating that age itself should not be a contraindication to treatment.

Relationship between polypharmacy and inpatient hospitalization among older adults with cancer treated with intravenous chemotherapy

OBJECTIVES

Polypharmacy (≥5 concurrent medications) is common among older patients with cancer (48%-80%) and associated with increased frailty, morbidity, and mortality. This study examined the relationship between polypharmacy and inpatient hospitalization among older adults with cancer treated with intravenous (IV) chemotherapy.

MATERIALS AND METHODS

The main data source was the Surveillance, Epidemiology, and End Results-Medicare linked files. Patients (≥65 years) were included if they were diagnosed with prostate (n = 1430), breast (n = 5490), or lung cancer (n = 7309) in 1991-2013 and received IV chemotherapy in 2011-2014. The number of medications during the six-month window pre-IV chemotherapy initiation determined polypharmacy status. Negative binomial models were used to assess the association between polypharmacy and post-chemotherapy inpatient hospitalization. The results were presented as incidence rate ratios.

RESULTS

We identified 13,959 patients with prostate, breast, or lung cancer treated with IV chemotherapy. The median number of prescription medications during the six-month window pre-IV chemotherapy initiation was high: ten among patients with prostate cancer, nine among patients with breast cancer, and eleven among patients with lung cancer. Compared to patients taking <5 prescriptions, post-chemotherapy hospitalization rate for patients with prostate cancer was 42%, 75%, and 114% higher among those taking 5-9, 10-14, and 15+ medications, respectively. Patients with breast and lung cancer demonstrated similar patterns.

CONCLUSION

This large population-based study found that polypharmacy during the six-month window pre-IV chemotherapy is highly predictive of post-chemotherapy inpatient hospitalization. Further studies are needed to evaluate whether medication management interventions can reduce post-chemotherapy inpatient hospitalization among older patients with cancer.

Oncology pharmacist-led medication reconciliation among cancer patients initiating chemotherapy

BACKGROUND

Pharmacist-led medication reconciliation (PMR) ensures adequate recording and use of medications by patients. PMR may be important for cancer patients initiating new therapies, as they have a high burden of medication use and are more susceptible to inadvertent medication discrepancies. To describe medication changes (additions, discontinuations, and modifications) made to the electronic health record during a PMR among cancer patients initiating chemotherapy.

METHODS

From October 2011 to March 2012, 397 cancer patients initiating chemotherapy underwent a PMR at the University of North Carolina Cancer Hospital. Self-reported medications and those in the patients' electronic health record were reviewed. Log-binomial regression models were used to estimate adjusted prevalence ratios and 95% confidence intervals for the associations between patient characteristics and medication changes made to the electronic health record.

RESULTS

Mean age at time of the PMR was 58. Median number of medications taken prior to the PMR was 10 and median time to PMR completion was 11 min. Vitamins and herbal supplements accounted for the largest proportion of medication additions (38%) and modifications (20%). Antimicrobials accounted for the largest share of discontinuations (15%). After adjustment for all other covariates, patients aged 60-69 years were more likely to have additions than those aged 50 and under (aPR = 1.47, 95%CI: 1.10-1.97). Patients 70 years and over were more likely to have modifications (aPR = 1.74, 95%CI: 1.07-2.82).

CONCLUSION

Our results show that most cancer patients had a medication change in the electronic health record. A brief oncology PMR can accurately capture and improve medication safety by preventing prescribing and administration errors.

Cancer statistics for adults aged 85 years and older, 2019

Adults aged 85 years and older, the "oldest old," are the fastest-growing age group in the United States, yet relatively little is known about their cancer burden. Combining data from the National Cancer Institute, the North American Association of Central Cancer Registries, and the National Center for Health Statistics, the authors provide comprehensive information on cancer occurrence in adults aged 85 years and older. In 2019, there will be approximately 140,690 cancer cases diagnosed and 103,250 cancer deaths among the oldest old in the United States. The most common cancers in these individuals (lung, breast, prostate, and colorectum) are the same as those in the general population. Overall cancer incidence rates peaked in the oldest men and women around 1990 and have subsequently declined, with the pace accelerating during the past decade. These trends largely reflect declines in cancers of the prostate and colorectum and, more recently, cancers of the lung among men and the breast among women. We note differences in trends for some cancers in the oldest age group (eg, lung cancer and melanoma) compared with adults aged 65 to 84 years, which reflect elevated risks in the oldest generations. In addition, cancers in the oldest old are often more advanced at diagnosis. For example, breast and colorectal cancers diagnosed in patients aged 85 years and older are about 10% less likely to be diagnosed at a local stage compared with those diagnosed in patients aged 65 to 84 years. Patients with cancer who are aged 85 years and older have the lowest relative survival of any age group, with the largest disparities noted when cancer is diagnosed at advanced stages. They are also less likely to receive surgical treatment for their cancers; only 65% of breast cancer patients aged 85 years and older received surgery compared with 89% of those aged 65 to 84 years. This difference may reflect the complexities of treating older patients, including the presence of multiple comorbidities, functional declines, and cognitive impairment, as well as competing mortality risks and undertreatment. More research on cancer in the oldest Americans is needed to improve outcomes and anticipate the complex health care needs of this rapidly growing population.

Management of the toxicity of chemotherapy and targeted therapies in elderly cancer patients

The elderly form a very heterogeneous group in relation to their general health state, degree of dependence, comorbidities, performance status, physical reserve and geriatric situation, so cancer treatment in the older patient remains a therapeutic challenge. The physiological changes associated with aging increase the risk of developing a serious toxicity induced by chemotherapy treatment, as well as other undesirable consequences as hospitalizations, dependence and non-compliance with treatment, that can negatively affect survival, quality of life and treatment efficacy. The use of hematopoietic growth factors and other active supportive interventions in the elderly can help prevent and/or alleviate these toxicities. However, we have little data on the efficacy and tolerance of support treatments in the older patient. The objective of this work is to review the most frequent toxicities of oncological treatments in the elderly and their management.

A Practical Guide to Geriatric Syndromes in Older Adults With Cancer: A Focus on Falls, Cognition, Polypharmacy, and Depression

Geriatric syndromes are multifactorial conditions that are prevalent in older adults. Geriatric syndromes are believed to develop when an individual experiences accumulated impairments in multiple systems that compromise their compensatory ability. In older adults with cancer, the presence of a geriatric syndrome is common and may increase the complexity of cancer treatment. In addition, the physiologic stress of cancer and cancer treatment may precipitate or exacerbate geriatric syndromes. Common geriatric syndromes include falls, cognitive syndromes and delirium, depression, and polypharmacy. In the oncology setting, the presence of geriatric syndromes is relevant; falls and cognitive problems have been shown to be predictive of chemotherapy toxicity and overall survival. Polypharmacy and depression are more common in older adults with cancer compared with the general geriatric population. Multiple screening tools exist to identify falls, cognitive problems, polypharmacy, and depression in older adults and can be applied to the oncology setting to identify patients at risk. When recognized, several interventions exist that could be considered for this vulnerable population. We review the available evidence of four geriatric syndromes in the oncology setting, including clinical implications, validated screening tools, potential supportive care, and therapeutic interventions.

Considerations of elderly factors to manage the complication of liver cirrhosis in elderly patients

The aging of the organ function causes sensitivity to the disease progression and need careful consideration for the medical treatment. With the increase of aging population, the opportunity to provide medical treatment for people in very old age is rapidly increasing therefore, the understanding of the various physiological changes of cellular function, size and function of organs are essential for the decision of therapeutic options. Among the various chronic conditions seen in elderly people, we have focused on liver cirrhosis, since despite specific therapeutic options for many of liver diseases including direct acting antivirals for hepatitis C virus, nucleoside analogs for hepatitis B, and corticosteroids for autoimmune hepatitis, there is currently no standard therapy to treat liver cirrhosis, which is the final stage of these liver diseases. Therefore, management of the various symptoms of liver cirrhosis is essential, and aging-related parameters must be considered in the decision making for therapeutic strategies and dosage of the available medicine. In this mini-review, we have summarized the therapeutic options to manage various symptoms of liver cirrhosis, carefully considering the physiological changes of various organs associated with aging.

Impact of comorbidity on disease characteristics, treatment intent and outcome in diffuse large B-cell lymphoma: a Swedish lymphoma register study

BACKGROUND

Comorbidity impacts overall survival amongst patients with diffuse large B-cell lymphoma (DLBCL). However, associations of comorbidity with lymphoma characteristics, treatment selection and lymphoma-specific mortality are less well known.

OBJECTIVE

To examine the impact of comorbidity on DLBCL characteristics, treatment intent and cause of death.

METHODS

We identified 3905 adult patients diagnosed with DLBCL 2007-2013 through the Swedish Lymphoma Register. We assessed comorbid disease history according to the Charlson comorbidity index (CCI). Comorbidity data and causes of death were collected through register linkage. Associations were estimated using multinomial regression and flexible parametric survival models.

RESULTS

Overall, 45% of the patients (n = 1737) had a history of at least one comorbidity at DLBCL diagnosis (cardiovascular disease, diabetes and solid cancer were most frequent), and 997 (26%) had a CCI score of ≥2. The relative probability of presenting with poor performance status (PS > 2) was higher amongst comorbid patients [Relative Risk Ratio (RRR)_PS>2 : 2.02, 95% CI: 1.63-2.51]. Comorbid patients had a substantially lower relative probability of receiving curative treatment (RRR: 0.48, 95% CI: 0.38-0.61). Amongst all patients, CCI ≥ 1 was associated with a significantly increased risk of all-cause and lymphoma-specific death after adjustments. Amongst patients selected for curative treatment, comorbidity was associated with an increased risk of all-cause death (HR_CCI>1 : 1.54, 95% CI: 1.32-1.80), but not with lymphoma-specific death (HR_CCI>1 : 1.05, 95% CI: 0.86-1.28).

CONCLUSION

Comorbidity is associated with inferior DLBCL outcome, mainly due to a lower likelihood of receiving treatment with curative intent. Possibly, more comorbid DLBCL patients could be treated with curative intent if comorbid conditions were optimized in parallel.

Novel Cancer Therapeutics in Geriatrics: What is Unique to the Aging Patient?

With the worldwide trend of aging populations, the number of older adults who develop and survive cancer is likely to increase. In the last decade, oncology drug development has shifted away from conventional chemotherapeutics towards agents that can 'target' a driver mutation of a specific cancer or 'unleash' the patient's native immune system to attack the cancer-so-called molecularly targeted therapies and immunotherapeutics. The basic algorithms of cancer treatment in elderly patients are essentially the same as in younger patients; however, one needs to pay exceptional attention to the effects of co-morbidities, interaction with other drugs, and the organ function reserve of an older individual before determining his/her 'eligibility' for a specific cancer treatment modality. Despite the growing evidence of safety and effectiveness of combination chemotherapy in fit elderly patients, the data are still lacking concerning the use of currently approved targeted agents and immunotherapies. The current evidence, though limited, suggests reasonable tolerability with comparable efficacy in patients > 65 years old treated with immune-based therapies to that in younger controls; however, it is unclear if this leads to significant patient-relevant gains such as improved survival with an acceptable quality of life. Nonetheless, these newer agents remain better tolerated than cytotoxic chemotherapy in clinical practice, particularly in older patients. Alternatively, a personalized approach for elderly patients with consideration of the incidence and management of adverse effects, as well as strategies for optimizing efficacy in the context of an aging immune system, would be of utmost value in our aging cancer population. Future trials should also explore immune markers to predict response to these therapeutics in elderly patients, taking into consideration the effects of immunosenescence and immune modulation in aging hosts.

Hospitalization by cytotoxic chemotherapy regimen among older women with stage IV breast cancer

BACKGROUND

Older patients with cancer are at risk for increased side effects of treatment. Our goal was to inform treatment for older patients by analyzing the relationship between chemotherapy regimen and hospitalization among older women receiving palliative cytotoxic chemotherapy for breast cancer.

METHOD

We identified women aged 66-99 years with stage IV de novo breast cancer diagnosed between 2010 and 2013 who received any of the 10 most common cytotoxic chemotherapy-containing regimens in the Surveillance, Epidemiology, and End Results (SEER)-Medicare database. The primary outcome was hospitalization or death within 30 days of starting a new line of chemotherapy. Generalized linear mixed effects models with patient-specific random effects were used for multivariable analysis of the association between chemotherapy regimen and this outcome. Additional covariates included number of prior lines of therapy; time since diagnosis; hormone receptor and HER2 status; sites of metastatic disease; and age, race, and marital status. The unit of analysis was each new line of chemotherapy.

RESULTS

Of 972 lines of chemotherapy initiated among 693 patients, 188 (19%) were followed by hospitalization or death within 30 days. After adjustment, there was significant variation in this outcome by chemotherapy regimen (P = .03); compared with capecitabine, hospitalization/death rates were higher with cyclophosphamide + docetaxel (odds ratio [OR], 2.71; 95% confidence interval [CI], 1.31-5.59), cyclophosphamide + doxorubicin (OR, 2.45; 95% CI, 1.19-5.03), docetaxel (OR, 2.49; 95% CI, 1.19-5.21), and gemcitabine (OR, 3.51; 95% CI, 1.72-7.19).

CONCLUSION

Treatment regimen was associated with significant variation in 30-day hospitalization or death among older women receiving cytotoxic chemotherapy for stage IV de novo breast cancer.