Current and future care of patients with the cancer anorexia-cachexia syndrome

Cancer cachexia: A scoping review on non-pharmacological interventions

Objective

Cancer cachexia occurs in 30%-80% of patients, increasing morbidity and mortality and impacting the health-related quality of life also for caregivers. Pharmacological interventions have been studied but have shown inconsistent effects on patients' lives in terms of relative outcomes and poor adherence to pharmacological treatment. We provide an overview of the evidence on non-pharmacological interventions for cancer cachexia.

Methods

We conducted a scoping review based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses-extension for scoping review (PRISMA-ScR). On September 21, 2022, plus an update on January 10, 2024, we searched MEDLINE, Embase, CINAHL, Cochrane, PsycINFO, and Scopus for 2012-2024. We excluded pharmacological interventions defined as "any substance, inorganic or organic, natural or synthetic, that can produce functional modifications, through a chemical, physicochemical or physical action."

Results

The search retrieved 9308 articles, of which 17 were eligible. Non-pharmacological interventions included nutritional counseling, complementary therapies (acupuncture), rehabilitation, and psychoeducational/psychosocial support. The data showed small and heterogeneous samples and different disease localization and stages. Thirty-nine percent were multimodal interventions and aimed at patients, not families. The common primary outcomes were body weight and composition, biomarkers, quality of life, psychological suffering, and muscular strength. Only three studies focus on the patient-caregiver dyad.

Conclusions

Interventions on cancer cachexia should be multimodal and multiprofessional, proposed early, and aimed at quality of life outcomes. The caregiver's involvement is essential. Nurses can play an active role in managing cancer cachexia. More well-designed studies are needed to understand the efficacy and contents of non-pharmacological interventions.

Systematic review registration

The review protocol has been registered in the OSF registry (DOI: 10.17605/OSF.IO/H4A29).

Management of cancer cachexia towards optimizing care delivery and patient outcomes

Cancer cachexia is a complex syndrome characterized by progressive weight loss, muscle mass depletion, and systemic inflammation, profoundly affecting the well-being and treatment outcomes of cancer patients. Effective management of cancer cachexia demands a coordinated, multifaceted approach involving various healthcare disciplines and operational strategies. Streamlining care processes is crucial to ensure timely interventions and support, reducing delays in diagnosis and treatment initiation. Multidisciplinary collaboration is pivotal in creating integrated care plans that address the multifactorial nature of cancer cachexia comprehensively. Data-driven decision-making empowers healthcare teams to identify trends, monitor treatment responses, and tailor care plans to individual needs, ultimately leading to improved patient outcomes. Standardized assessment and monitoring play a vital role in maintaining consistent, high-quality care, facilitating early interventions and treatment adjustments. Implementing patient-centered care fosters trust, enhances treatment adherence, and encourages patients to actively engage in their care journey, thereby improving their overall quality of life. This paper underscores the significance of applying operations management principles to optimize care delivery and enhance patient outcomes in the management of cancer cachexia. It provides valuable insights for healthcare institutions and professionals striving to provide comprehensive and effective care for individuals affected by this challenging condition.

The Incidence and Management of Cancer-Related Anorexia During Treatment with Vascular Endothelial Growth Factor Receptor-Tyrosine Kinase Inhibitors

Cancer-related anorexia is a common complication and frequently occurs in cancer patients treated with vascular endothelial growth factor receptor-tyrosine kinase inhibitors (VEGFR-TKIs). Anorexia contributes to malnutrition, body weight loss, and cachexia in affected patients. Furthermore, patients who experience anorexia have worse outcomes than those who maintain their appetite, highlighting the importance of managing anorexia and related symptoms. However, as the causes of anorexia are both diverse and interconnected, there have been challenges in evaluating and implementing effective interventions. In this review, we described the contributing factors to cancer-related anorexia and reviewed recent literature for the frequency of anorexia symptoms in patients treated with VEGFR-TKIs. Additionally, we evaluated the evidence for current interventions and the potential benefits of multimodal and multidisciplinary approaches to care. The frequency of anorexia symptoms in patients who received VEGFR-TKIs ranged from 14%-58% for all-grade anorexia and 0%-6% for grade 3 or 4 anorexia. While many of the interventions for cancer-related anorexia have minimal benefit or adverse events, recent advances in our understanding of cancer-related anorexia suggest that multimodal therapy with multidisciplinary care is a promising avenue of investigation. Several studies currently underway are anticipated to further assess the effectiveness of multimodal approaches.

Managing Nutrition Impact Symptoms in Cancer Cachexia: A Case Series and Mini Review

Malnutrition is common in cancer patients and can occur throughout a patient’s disease course. The contributors to the clinical syndrome of cancer cachexia are often multifactorial, and produced by the cancer and associated pro-inflammatory response. Since cancer cachexia is a multifactorial syndrome, a multimodal therapeutic approach is ideal. A key component of therapy is identifying and managing symptom barriers to adequate oral intake, known as nutritional impact symptoms (NIS). NIS are associated with reduced intake and weight loss in patients with advanced cancer, and aggregate NIS are a predictor of survival in patients with Head and Neck Cancer and in patients undergoing surgery for esophageal cancer. Currently, there are no guidelines regarding the specific management of NIS in oncology patients. Experience from specialist centers suggest relatively simple assessments and inexpensive interventions are available for the diagnosis and treatment of NIS. We present three patient cases from a cachexia clinic, where NIS management decreased symptom burden and improved clinical outcomes such as weight and physical performance.

Barriers in Nursing Practice in Cancer Cachexia: A Scoping Review

This scoping review aims to identify the barriers in practice and clinical trials for oncology nurses in cancer cachexia. We used the framework proposed by Arksey and O'Malley and Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. Studies written in English and published between 2008 and 2021 were retrieved from five databases: MEDLINE, Cochrane Library, CINAHL, PsycINFO, and EMBASE. A total of 1075 studies were identified, and 34 full-text studies were assessed for eligibility by three researchers. Seventeen studies met the inclusion criteria. This review revealed several barriers to nursing practice and clinical trials in cancer cachexia. First, health-care professionals, including nurses, faced individual barriers (insufficient understanding and skills for diagnosis and management) and environmental barriers (lack of standardized screening tools or treatment options, difficulties in collaboration with other professions, and limited human resources) in practice. Second, studies on nurse-led interventions for cancer cachexia were relatively few and different in objectives, making it challenging to integrate the outcomes. Finally, there were no established educational programs for nurses that explicitly focused on cancer cachexia. This scoping review revealed individual and environmental barriers in nursing practice. In addition, there have relatively few clinical trials involving oncology nurses in cancer cachexia. Continuing education for nurses should cover cancer cachexia to improve the quality of oncology care in the future. It is also necessary to standardize practical assessment tools that are easy to assess daily and lead to interventions and develop nurse-led multidisciplinary care.

Efficacy and Safety of Yukgunja-Tang for Patients with Cancer-related Anorexia: A Randomized, Controlled Trial, Pilot Study

Objective:

The purpose of this study is both to estimate the efficacy and the safety of Yukgunja-tang (YGJT) and to establish evidence for the use of herbal medicines in the management of patients with cancer-related anorexia.

Methods:

We enrolled 40 patients with cancer-related anorexia. The enrolled participants were randomly allocated to 2 groups: the control group (n = 20), which received nutrition counseling, and the treatment group (n = 20), which received nutrition counseling and was administered YGJT at twice a day for 4 weeks (a total of 56 times @ 3.0 g each time). The primary outcome of this study was the score on the anorexia/cachexia subscale (ACS) of the Functional Assessment of Anorexia/Cachexia Therapy (FAACT). The secondary outcomes were the FAACT score with the ACS score excluded, the score on the Visual Analog Scale (VAS) for appetite, and the results on laboratory tests regarding appetite, such as leptin, tumor necrosis factors (TNF-α), interleukin-6 (IL-6), and ghrelin. All variables related to the safety assessment, such as vital signs, electrocardiography results, laboratory test results (complete blood cell count, chemistry, urine test), and adverse events, were documented on the case report form (CRF) at every visit.

Result:

The difference in the primary outcome, that is, the score on the anorexia/cachexia subscale (ACS) of the Functional Assessment of Anorexia/Cachexia Therapy (FAACT), between the control and the treatment groups was statistically significant (P = .023) as was the difference in the FAACT scores with the ACS score excluded, a secondary outcome, between the 2 groups; however, no statistically significant differences were noted in the scores on the VAS or the levels of leptin, TNF-α, IL-6, and ghrelin. In addition, no significant differences in the numbers and the types of adverse events or in the results on the laboratory tests between the control and the treatment groups were recorded.

Conclusion:

These results obtained in this research confirmed the efficacy and the safety of using YGJT as a herb-medicine treatment option for patients with cancer-related anorexia.

A randomised, double blind, placebo-controlled trial of megestrol acetate or dexamethasone in treating symptomatic anorexia in people with advanced cancer

This multi-site, double blind, parallel arm, fixed dose, randomised placebo controlled phase III study compared megestrol acetate 480 mg/day with dexamethasone 4 mg/day for their net effects on appetite in people with cancer anorexia. Patients with advanced cancer and anorexia for ≥ 2 weeks with a score ≤ 4 (0–10 numeric rating scale (NRS) 0 = no appetite, 10 = best possible appetite) were recruited. Participants received megestrol 480 mg or dexamethasone 4 mg or placebo daily for up to 4 weeks. Primary outcomes were at day 7. Responders were defined as having a ≥ 25% improvement in NRS over baseline. There were 190 people randomised (megestrol acetate n = 61; dexamethasone n = 67, placebo n = 62). At week 1 (primary endpoint), 79·3% in the megestrol group, 65·5% in the dexamethasone group and 58·5% in the placebo group (p = 0.067) were responders. No differences in performance status or quality of life were reported. Treatment emergent adverse events were frequent (90·4% of participants), and included altered mood and insomnia. Hyperglycemia and deep vein thromboses were more frequent when on dexamethasone than the other two arms. There was no difference in groups between the three arms, with no benefit seen over placebo with anorexia improving in all arms.

Trail registration: The trial was registered on 19/08/2008 with the Australian New Zealand Clinical Trials Registry (ACTRN12608000405314).

Efficacy and safety of pharmacological cachexia interventions: systematic review and network meta-analysis

AIMS

Randomised controlled trials (RCTs) demonstrated benefits of pharmacological interventions for cachexia in improving weight and appetite. However, comparative efficacy and safety are not available. We conducted a systematic review and network meta-analysis (NMA) to evaluate the relative efficacy and safety of pharmacological interventions for cachexia.

METHODS

PubMed, EmBase, Cochrane, and ClinicalTrials.gov were searched for RCTs until October 2019. Key outcomes were total body weight (TBW) improvement, appetite (APP) score and serious adverse events. Two reviewers independently extracted data and assessed risk of bias. NMA was performed to estimate weight gain and APP score increase at 8 weeks, presented as mean difference (MD) or standardised MD with 95% CI.

RESULTS

80 RCTs (10 579 patients) with 12 treatments were included. Majority is patients with cancer (7220). Compared with placebo, corticosteroids, high-dose megestrol acetate combination (Megace_H_Com) (≥400 mg/day), medroxyprogesterone, high-dose megestrol acetate (Megace_H) (≥400 mg/day), ghrelin mimetic and androgen analogues (Androgen) were significantly associated with MD of TBW of 6.45 (95% CI 2.45 to 10.45), 4.29 (95% CI 2.23 to 6.35), 3.18 (95% CI 0.94 to 5.41), 2.66 (95% CI 1.47 to 3.85), 1.73 (95% CI 0.27 to 3.20) and 1.50 (95% CI 0.56 to 2.44) kg. For appetite improvement, Megace_H_Com, Megace_H and Androgen significantly improved standardised APP score, compared with placebo. There is no significant difference in serious adverse events from all interventions compared with placebo.

CONCLUSIONS

Our findings suggest that several pharmacological interventions have potential to offer benefits in treatment of cachexia especially Megace_H and short-term use corticosteroids. Nonetheless, high-quality comparative studies to compare safety and efficacy are warranted for better management of cachexia.

Impact of musculoskeletal degradation on cancer outcomes and strategies for management in clinical practice

The prevalence of malnutrition in patients with cancer is one of the highest of all patient groups. Weight loss (WL) is a frequent manifestation of malnutrition in cancer and several large-scale studies have reported that involuntary WL affects 50-80% of patients with cancer, with the degree of WL dependent on tumour site, type and stage of disease. The study of body composition in oncology using computed tomography has unearthed the importance of both low muscle mass (sarcopenia) and low muscle attenuation as important prognostic indications of unfavourable outcomes including poorer tolerance to chemotherapy; significant deterioration in performance status and quality of life (QoL), poorer post-operative outcomes and shortened survival. While often hidden by excess fat and high BMI, muscle abnormalities are highly prevalent in patients with cancer (ranging from 10 to 90%). Early screening to identify individuals with sarcopenia and decreased muscle quality would allow for earlier multimodal interventions to attenuate adverse body compositional changes. Multimodal therapies (combining nutritional counselling, exercise and anti-inflammatory drugs) are currently the focus of randomised trials to examine if this approach can provide a sufficient stimulus to prevent or slow the cascade of tissue wasting and if this then impacts on outcomes in a positive manner. This review will focus on the aetiology of musculoskeletal degradation in cancer; the impact of sarcopenia on chemotherapy tolerance, post-operative complications, QoL and survival; and outline current strategies for attenuation of muscle loss in clinical practice.

Asprosin is associated with anorexia and body fat mass in cancer patients

PURPOSE

Increasing evidence suggests that many adipokines are involved in cancer-related anorexia and cachexia syndrome (CACS), although the underlying mechanism remains to be clarify. Asprosin is a new peptide hormone mainly secreted by white adipose tissues that can increase appetite and body weight. In this cross-sectional study, we tested whether asprosin may intervene in the development of CACS.

METHODS

The fasting plasma asprosin levels were determined via enzyme-linked immune-sorbent assay. Anorexia was determined using the anorexia/cachexia subscale (A/CS) of the functional assessment of anorexia/cachexia therapy (FAACT) questionnaire. The body composition was assessed using bioelectrical impedance analysis. The association of plasma asprosin with anorexia, cachexia, and nutritional status was analyzed.

RESULTS

One hundred twenty treatment-naïve patients with pathological confirmed gastrointestinal or lung cancer and 14 mild gastritis patients were recruited. We found no significant difference in asprosin levels between subgroups of patients by age, sex, cancer types or stage. Correlation analysis suggested that asprosin levels were positively associated with body fat mass (r = 0.248, p = 0.043). No correlations were found between asprosin levels and hemoglobin, white blood cell count, blood platelet count, albumin, C-reactive protein, glucose, cholesterol, triglyceride, high density lipoprotein, low density lipoprotein, body mass index, body fat percentage, protein, skeletal muscle, muscle mass, lean body mass, and basal metabolic rate. Furthermore, asprosin levels were not significantly different between patients with or without cachexia. However, patients with anorexia had significantly lower asprosin levels compared with patients without anorexia. No significant difference in asprosin levels between gastritis and gastric cancer patients. Similarly, no significant change of asprosin levels occurred postoperatively in 10 gastric cancer patients.

CONCLUSIONS

Patients with anorexia had significantly lower asprosin levels compared with patients without anorexia. We therefore speculated that asprosin might intervene in the development of cancer anorexia and serve as a potential therapeutic target.

Efficacy and safety of Yukgunja-Tang for treating anorexia in patients with cancer: The protocol for a pilot, randomized, controlled trial

BACKGROUND

Anorexia is a common cause of malnutrition and is associated with negative effects on the quality of life (QOL) for patients with cancer. Management of appetite is the key to improving both the QOL and the prognosis for such patients. Yukgunja-tang (YGJT) is a traditional herbal medicine extensively prescribed in Korea as a remedy for various gastrointestinal syndromes. Currently, no standardized herbal medicine treatment exists for patients with cancer who are suffering from anorexia after surgery, chemotherapy, and/or radiotherapy. For that reason, this study aims to examine the efficacy and the safety of using YGJT to treat anorexia in such patients and to establish whether or not YGJT can be recommended as the primary therapy.

METHODS

We will enroll 52 cancer patients diagnosed with anorexia. The enrolled participants will be randomly allocated to 2 groups: The control group will receive nutrition counseling, and the YGJT group will receive nutrition counseling and be administered YGJT at a dose of 3 g twice a day for 4 weeks (a total of 56 doses of 3.0 g per dose). The primary outcome of this study is the change in the score on the anorexia/cachexia subscale (A/CS) of the Functional Assessment of Anorexia/Cachexia Therapy (FAACT). The secondary outcomes are the changes in the FAACT score with the A/CS score excluded, the score on the Visual Analogue Scale (VAS) for appetite, the weight and the body mass index (BMI), and laboratory tests for compounds such as leptin, tumor necrosis factor-α (TNF-α), ghrelin, and IL-6. All variables related to the safety assessment, such as vital signs, electrocardiography results, laboratory test results (CBC, chemistry, urine test), and adverse events, will be documented on the case report form (CRF) at every visit.

CONCLUSION

This study is the first randomized controlled trial to investigate the efficacy and the safety of using YGJT for treating patients with cancer-related anorexia in Korea. We designed this study based on previous research about YGJT. This study will serve as a pilot and provide data for planning further clinical trials on herbal medicine and cancer-related anorexia.

TRIAL REGISTRATION

Clinical Research Information Service (CRIS), Republic of Korea, ID: KCT0002847. Registered retrospectively on 3 April 2018.

Assessment of Body Composition in Oncologic Patients: Experimental Survey on the Role of Bioimpedentiometric Analysis

Overall survival of oncologic patients is strongly influenced by the incidence of malnutrition, with subsequent loss of muscle mass until sarcopenia. In this respect, the assessment of body composition has a pivotal role in order to manage the clinical consequences of muscle loss.

AIM

This study focuses on the body composition assessment in oncologic patients, following a diet plan in order to detect and contrast neoplastic cachexia.

MATERIALS AND METHOD

35 oncologic patients were enrolled and divided into two groups: 24 responders (R) and 11 non-responders (NR). Anthropometric data were collected and body composition was assessed through bioimpedentiometry. All patients received an individualized normocaloric diet. Energetic content was assigned on the basis of individual basal metabolic rate estimated by BIA. All patients were revaluated by anthropometry and bioimpedentiometry 3 and 6 months thereafter.

RESULTS

Comparing the two male groups R and NR after 6 months, the former maintained almost the same confidence interval, unlike the latter whose interval increased, indicating a light worsening both of body composition and of clinical conditions. Furthermore, in the same male responder group, an improvement of the phase angle (PhA), a positive prognostic factor, was found, with an average weight loss between 2,6 - 3 kg of fat mass (FM). Besides, data show how the R female group maintained the confidence interval unlike the NR female group, whose confidence interval remarkably increased, therefore indicating an important alteration of body composition and subsequently a clinical conditions worsening. Finally, comparing the NR male group with the NR female group after 6 months, a remarkable worsening of body composition (marker of tissue decay and damage) could be noticed in the latter group.

CONCLUSION

After 6 months, NR patients show worse results (both in the body composition and in the clinical conditions) compared to the responders, with particularly worse results in females, probably because of a genetically determined sex-related smaller muscle cells and inferior muscular strength. A multidimensional assessment of oncologic patient is necessary, with a special attention to nutritional evaluation and body composition monitoring, in order to avoid malnutrition and subsequent further clinical worsening.

Oral Intake of Royal Jelly Has Protective Effects Against Tyrosine Kinase Inhibitor-Induced Toxicity in Patients with Renal Cell Carcinoma: A Randomized, Double-Blinded, Placebo-Controlled Trial

Background: Although tyrosine kinase inhibitors (TKIs) are still recommended as the standard therapy in renal cell carcinoma (RCC), the high frequency of adverse events is a weakness of this therapy. Because royal jelly (RJ) possesses anti-inflammatory and antioxidant properties, we assessed its protective effects on TKI-induced toxicities in RCC patients. Methods: We enrolled 33 patients with advanced RCC who were assigned to start TKI therapy in combination with a randomized, double-blinded, placebo-controlled RJ trial consisting of a placebo group with 17 subjects and an RJ group with 16 subjects. Results: Fatigue and anorexia frequencies in the RJ group were significantly lower than in the placebo group (p = 0.003 and 0.015, respectively). A statistically significant correlation between RJ and fatigue or anorexia was detected in sunitinib-treated patients. The dose reduction- or discontinuation-free periods were significantly longer (p = 0.013) in the RJ group than in the placebo group. Furthermore, similar observations were made in sunitinib-treated patients (p = 0.016). Conclusions: Our clinical trial showed that RJ exerted protective effects against TKI-induced fatigue and anorexia and lowered TKI dose reduction or discontinuation. Hence, RJ is beneficial for maintaining the quality of life and medication compliance in TKI-treated RCC patients.

Clinical Framework for Quality Improvement of Cancer Cachexia

The objective of this article is to introduce the Clinical Framework for Quality Improvement of Cancer Cachexia (Cachexia Care Framework) as a tool to demonstrate the relevance of integrating the clinical components of cancer cachexia and the organizational strategies of a cancer institution on the quality of patient care and delivery of services throughout the cancer cachexia continuum. The data sources included peer-reviewed literature relevant to cancer cachexia and quality cancer care, and the authors’ expertise. The Cachexia Care Framework results from a combination of the international consensus definition of cancer cachexia, the Institute of Medicine report Ensuring Quality Cancer Care, and the authors’ experience with a cancer cachexia clinic. This framework is proposed as a guidance for oncology nurses and other healthcare providers to improve the quality of care of cancer cachexia patients. Specifically, the framework can be used by oncology nurses involved in the care of patients diagnosed with cancer cachexia either in direct patient care, administration, research, or education. Nurses can use the framework in clinical practice to identify specific assessments and interventions based on the cachexia stage of the patient; in nursing administration, the framework offers a wide view of potential errors that can happen and the opportunity to prevent them; in nursing research, the framework illustrates the several factors and processes that can impact patient outcomes; and in nursing education, the framework outlines the elements necessary to develop and implement a continuum education curriculum to educate the workforce of oncology nurses, and in the academic setting, an interprofessional curriculum to educate nurses and many other healthcare disciplines.

Establishment and characterization of a novel murine model of pancreatic cancer cachexia

BACKGROUND

Cachexia is a complex metabolic and behavioural syndrome lacking effective therapies. Pancreatic ductal adenocarcinoma (PDAC) is one of the most important conditions associated with cachexia, with >80% of PDAC patients suffering from the condition. To establish the cardinal features of a murine model of PDAC-associated cachexia, we characterized the effects of implanting a pancreatic tumour cell line from a syngeneic C57BL/6 KRASG12D P53R172H Pdx-Cre+/+ (KPC) mouse.

METHODS

Male and female C57BL/6 mice were inoculated subcutaneously, intraperitoneally, or orthotopically with KPC tumour cells. We performed rigorous phenotypic, metabolic, and behavioural analysis of animals over the course of tumour development.

RESULTS

All routes of administration produced rapidly growing tumours histologically consistent with moderate to poorly differentiated PDAC. The phenotype of this model was dependent on route of administration, with orthotopic and intraperitoneal implantation inducing more severe cachexia than subcutaneous implantation. KPC tumour growth decreased food intake, decreased adiposity and lean body mass, and decreased locomotor activity. Muscle catabolism was observed in both skeletal and cardiac muscles, but the dominant catabolic pathway differed between these tissues. The wasting syndrome in this model was accompanied by hypothalamic inflammation, progressively decreasing brown and white adipose tissue uncoupling protein 1 (Ucp1) expression, and increased peripheral inflammation. Haematological and endocrine abnormalities included neutrophil-dominant leukocytosis and anaemia, and decreased serum testosterone.

CONCLUSIONS

Syngeneic KPC allografts are a robust model for studying cachexia, which recapitulate key features of the PDAC disease process and induce a wide array of cachexia manifestations. This model is therefore ideally suited for future studies exploring the physiological systems involved in cachexia and for preclinical studies of novel therapies.

Sipjeondaebo-tang in patients with cancer with anorexia: a protocol for a pilot, randomised, controlled trial

INTRODUCTION

Cancer-related anorexia is the loss of appetite or desire to eat in patients with cancer. Although treatments for cancer-related anorexia do exist, patients have sought complementary and alternative medicine including herbal remedies, due to safety concerns. Sipjeondaebo-tang is one among other popular herbal medicines that are beneficial to management of anorexia in Korea. The purpose of this study is to examine the feasibility for a full randomised clinical trial of Sipjeondaebo-tang for cancer-related anorexia.

METHODS AND ANALYSIS

This study is a randomised, double-blinded and placebo-controlled trial of Sipjeondaebo-tang. For the study, 40 patients with cancer, aged 20-80 years, who reported anorexia, will be recruited. The participants will receive either 3 g of Sipjeondaebo-tang or a placebo, 3 times a day for 4 weeks. The primary end point is a change in the anorexia/cachexia subscale (A/CS) of Functional Assessment of Anorexia/Cachexia Therapy (FAACT). The secondary end points include changes in the visual analogue scale (VAS) of appetite, cortisol and ghrelin. The outcomes will be measured on every visit. Each participant will visit once a week during 4 weeks.

ETHICS AND DISSEMINATION

The present study has been approved by the Institutional Review Board of the Dunsan Korean Medicine Hospital of Daejeon University (reference DJDSKH-15-03-2 (V.2.0)). The results will be disseminated in a peer-reviewed journal and scientific conference.

TRIAL REGISTRATION NUMBER

NCT02468141; Pre-results.

Pancreatic cancer

Pancreatic cancer is a major cause of cancer-associated mortality, with a dismal overall prognosis that has remained virtually unchanged for many decades. Currently, prevention or early diagnosis at a curable stage is exceedingly difficult; patients rarely exhibit symptoms and tumours do not display sensitive and specific markers to aid detection. Pancreatic cancers also have few prevalent genetic mutations; the most commonly mutated genes are KRAS, CDKN2A (encoding p16), TP53 and SMAD4 - none of which are currently druggable. Indeed, therapeutic options are limited and progress in drug development is impeded because most pancreatic cancers are complex at the genomic, epigenetic and metabolic levels, with multiple activated pathways and crosstalk evident. Furthermore, the multilayered interplay between neoplastic and stromal cells in the tumour microenvironment challenges medical treatment. Fewer than 20% of patients have surgically resectable disease; however, neoadjuvant therapies might shift tumours towards resectability. Although newer drug combinations and multimodal regimens in this setting, as well as the adjuvant setting, appreciably extend survival, ∼80% of patients will relapse after surgery and ultimately die of their disease. Thus, consideration of quality of life and overall survival is important. In this Primer, we summarize the current understanding of the salient pathophysiological, molecular, translational and clinical aspects of this disease. In addition, we present an outline of potential future directions for pancreatic cancer research and patient management.

Optimizing initial chemotherapy for metastatic pancreatic cancer

The two combination chemotherapy regimens FOLFIRINOX and gemcitabine plus nab-paclitaxel represent major breakthroughs in the management of metastatic pancreatic cancer. Both regimens showed unprecedented survival advantage in the setting of front-line therapy. However, their application for treatment of patients in the community is challenging because of significant toxicities, thus limiting potential benefits to a narrow population of patients. Modifications to the dose intensity or schedule of those regimens improve their tolerability, while likely retaining survival advantage over single-agent chemotherapy. Newer strategies to optimize these two active regimens in advanced pancreatic cancer are being explored that can help personalize treatment to individual patients.