Treatment Patterns and Postoperative Activities of Daily Living in Patients with Non-small Cell Lung Cancer: A Retrospective Study Using Nationwide Health Services Utilization Data in Japan

BACKGROUND

The number of older patients with cancer has been increasing. This study aimed to determine the proportion of postoperative decline in activities of daily living (ADL), hospital mortality rate, home healthcare services use, and adjuvant chemotherapy treatment patterns of patients with early-stage non-small cell lung cancer (NSCLC) across age groups.

METHODS

We analyzed health service utilization data of patients aged ≥ 40 years diagnosed with clinical stage I or II NSCLC in 2015 who underwent thoracoscopy or thoracotomy. The Barthel index was used to determine the proportions of patients aged 40-64, 65-74, ≥ 75 years who experienced a decline in the ADL of ≥ 10 points at postoperative discharge compared to the ADL at admission.

RESULTS

Overall, 19,780 patients were analyzed. The proportion of patients with ADL decline slightly increased with increasing age: 1.1%, 1.6%, and 3.5% after thoracoscopic surgery, and 1.4%, 2.8%, and 4.8% after thoracotomy among those aged 40-64, 65-74, and ≥ 75 years, respectively. The hospital mortality rate and proportion of home healthcare services use was fewer than 10 cases, or < 2%. The unexpected readmission rate was slightly higher among those aged ≥ 75 years (3.7% for thoracoscopic surgery, 4.7% for thoracotomy) than among those aged 40-64 years (1.8% for thoracoscopic surgery, 2.5% for thoracotomy).

CONCLUSION

The difference in the proportion of patients with ADL decline between those aged 40-64 and ≥ 75 years was approximately 3%. This study provides practical information for clinicians involved in the care of older patients who undergo thoracic surgery.

Multi-institutional study of osimertinib dose-optimization in non-small cell lung cancer patients with EGFR activating mutation aged 70 years or older ('MONEY' trial)

Osimertinib is the standard of care for patients with epidermal growth factor receptor-activating mutation-positive non-small cell lung cancer. Dose-toxicity has been previously reported, but no dose-response data within the range of 20-240 mg daily (mg/d). Thus, the current 80 mg/d dosing might be too high for elderly Japanese patients with an average body weight of only 50 kg, resulting in excessive toxicity and cost. We therefore initiated a study to investigate whether osimertinib at 40 mg/d is non-inferior to 80 mg/d in patients with advanced or recurrent epidermal growth factor receptor-activating mutation-positive non-small cell lung cancer aged ≥70 years, using a regression discontinuity design. Osimertinib is administered at 40 mg/d for body weight ≤50 kg, and 80 mg/d for body weight >50 kg. The primary endpoint is progression-free survival. Sample size is 550 patients, based on a non-inferiority margin of the progression-free survival hazard ratio 1.333, 0.10 one-sided type I error and 80% power.

Leave no one behind: A global survey of the current state of geriatric oncology practice by SIOG national representatives

INTRODUCTION

The Sustainable Development Goals of the United Nations include a commitment to "leave no one behind" as a universal goal. To achieve this in geriatric oncology (GO) worldwide, it is important to understand the current state of GO at an international level. The International Society of Geriatric Oncology (SIOG) has several National Representatives (NRs) who act as SIOG's delegates in their respective countries. The NRs took part in this international survey exploring the state of GO practice, identifying barriers and solutions.

MATERIALS AND METHODS

The NRs answered open-ended questions by email from February 2020 to October 2022. The questionnaire domains included the demographic information of older adults for their countries, and the NRs' opinions on whether GO is developing, what the barriers are to developing GO, and proposed actions to remove these barriers. The demographic data of each country reported in the survey was adjusted using literature and database searches.

RESULTS

Twenty-one of thirty countries with NRs (70%) participated in this questionnaire study: 12 European, four Asian, two North American, two South American, and one Oceanian. The proportion of the population aged ≥75 years varied from 2.2% to 15.8%, and the average life expectancy also varied from 70 years to 86 years. All NRs reported that GO was developing in their country; four NRs (18%) reported that GO was well developed. Although all NRs agreed that geriatric assessment was useful, only three reported that it was used day-to-day in their countries' clinical practice (14%). The major barriers identified were the lack of (i) evidence to support GO use, (ii) awareness and interest in GO, and (iii) resources (time, manpower, and funding). The major proposed actions were to (i) provide new evidence through clinical trials specific for GO patients, (ii) stimulate awareness through networking, and (iii) deliver educational materials and information to healthcare providers and medical students.

DISCUSSION

This current survey has identified the barriers to GO and proposed actions that could remove them. Broader awareness seems to be essential to implementing GO. Additional actions are needed to develop GO within countries and can be supported through international partnerships.

A Retrospective Study of Gemcitabine Plus Nab-Paclitaxel for Advanced Pancreatic Cancer Refractory to Gemcitabine Monotherapy

BACKGROUND/AIM

This study aimed to investigate the efficacy and safety of gemcitabine (GEM) plus nab-paclitaxel (nab-PTX), termed GnP, which is limited, in patients with advanced pancreatic cancer (PC) who show good tolerance to GEM monotherapy prior to being refractory to it.

PATIENTS AND METHODS

We retrospectively analyzed the data of patients with locally advanced or metastatic PC who received GEM followed by GnP between December 2014 and March 2019, regardless of the treatment line.

RESULTS

A total of 14 patients who received GnP after becoming refractory to GEM were included in this study. Eight patients were included in the nab-PTX-naïve group, seven of whom were treated with GEM monotherapy as first-line chemotherapy, and one was refractory to GEM monotherapy after modified FOLFIRINOX treatment. The other six patients were included in the nab-PTX reintroduction group. In this group, all patients received GnP followed by GEM maintenance therapy to prevent adverse events, such as peripheral neuropathy and fatigue. Two patients in the nab-PTX-naïve group showed partial response and none in the reintroduction group; median progression-free survival was 7.6 and 1.4 months and median overall survival was 9.4 and 6.2 months, respectively. In the safety analysis, grade 3 anemia and peripheral neuropathy were observed in one patient in the nab-PTX reintroduction group, while the remaining adverse events were of grade 1 or 2.

CONCLUSION

GnP is safe and effective even in patients with GEM-refractory PC, and GEM treatment followed by GnP can be an effective treatment option for patients with nab-PTX-naïve PC.

Early Tumor Shrinkage and Depth of Response as Predictors of Survival for Advanced Biliary Tract Cancer: An Exploratory Analysis of JCOG1113

BACKGROUND

Recent studies suggest that early tumor shrinkage (ETS) and depth of response (DpR) reflect outcomes of chemotherapy in various cancers. This study evaluated the association of ETS and DpR with clinical outcomes using data from JCOG1113, which demonstrated the non-inferiority of gemcitabine plus S-1 (GS) to gemcitabine plus cisplatin (GC) for chemotherapy-naïve advanced biliary tract cancer.

MATERIAL AND METHODS

In total, 354 (289 with measurable target lesions) patients enrolled in JCOG1113 were divided into ETS-unachieved and ETS-achieved groups (≥20% tumor reduction at week 6) and DpR-low and DpR-high groups (≥40% maximum shrinkage) until 12 weeks after enrollment. The impact of ETS and DpR on survival outcome was evaluated using the multivariable Cox proportional hazard model.

RESULTS

The proportions of patients in the ETS-achieved and DpR-high groups were similar between the 2 treatment arms. The hazard ratios (HRs) of progression-free survival (PFS) and overall survival (OS) for the ETS-achieved group were 0.70 (95% confidence interval (CI), 0.52-0.93) and 0.60 (95%CI, 0.44-0.81), respectively. The HRs of PFS and OS for the DpR-high group were 0.67 (95%CI, 0.48-0.94) and 0.64 (95%CI, 0.46-0.90), respectively. In the subpopulation treatment effect pattern plot analysis, most patients in the ETS-achieved group in the GC arm did not experience disease progression after 12 weeks from the landmark.

CONCLUSION

As on-treatment markers, ETS and DpR were effective tools. ETS was clinically useful, because it can be used to evaluate the outcomes of treatment early at a specific time.

Barriers and facilitators to implementing geriatric assessment in daily oncology practice in Japan: A qualitative study using an implementation framework

INTRODUCTION

Various guidelines recommend geriatric assessment (GA) for older adults with cancer, but it is not widely implemented in daily practice. This study uses an implementation framework to comprehensively and systematically identify multi-level barriers and facilitators to implementing GA in daily oncology practice.

MATERIALS AND METHODS

We conducted 16 semi-structured interviews with healthcare providers in 10 designated cancer hospitals in Japan, using purposive and convenience sampling. The Consolidated Framework for Implementation Research (CFIR) was used to guide collection and analysis of interview data following a deductive content analysis approach with consensual qualitative research methods. After coding the interview data, ratings were assigned to each CFIR construct for each case, reflecting the valence and strength of each construct relative to implementation success. Then, those constructs that appeared to distinguish between high-implementation hospitals (HI) where GA is routinely performed in daily practice and low-implementation hospitals (LI) where GA is performed only for research purposes or not at all were explored.

RESULTS

Of the 24 CFIR constructs assessed in the interviews, 15 strongly distinguished between HI and LI. In HI, GA was self-administered (Adaptability), or administered via a mobile app with interpretation (Design Quality and Packaging). In HI, healthcare providers were strongly aware of the urgent need to change practice for older adults (Tension for Change) and recognized that GA was compatible with existing workflow as part of their jobs (Compatibility), whereas in LI, they did not realize the need to change practice, and dismissed GA as an extra burden on their heavy workload. In HI, usefulness of GA was widely recognized by healthcare providers (Knowledge & Beliefs about the Intervention), GA had a high priority (Relative Priority) and had strong support from hospital directors, managers, and nursing chiefs (Leadership Engagement), and multiple stakeholders were successfully engaged, including nurses (Key Stakeholders), peer doctors (Opinion Leaders), and those who drive implementation of GA (Champions).

DISCUSSION

These findings suggest that successful implementation of GA should focus on not only individual beliefs about the usefulness of GA and the complexity of GA itself, but also organizational factors related to hospitals and the engagement of multiple stakeholders.

Priority of the basic and instrumental activities of daily living in older patients with cancer prescribed rehabilitation: a cross-sectional survey

BACKGROUND

There is no information on whether vulnerable older patients with cancer consider basic activities of daily living (BADL) and instrumental activities of daily living (IADL) important outcomes. Our survey aimed to investigate the priority of BADL and IADL in outcomes among vulnerable older patients with cancer.

METHODS

This was a single-center survey in a Japanese cancer center. Eligible patients were ≥ 65 years of age and were prescribed in-hospital rehabilitation while under cancer treatment. Using original self-administered ranking questionnaires, patients were asked to rank outcomes and subdomain of BADL and IADL. High-priority domains were defined as the highest, second-highest, and third-highest priority domains in individuals.

RESULTS

A total of 169 patients were analyzed. The mean age was 74.0 years (standard deviation, 5.1 years) and the number of males was 107 (63%). The order of ranking of high-priority outcomes was BADL and IADL (n = 155), cognitive function (n = 91), mental function (n = 82), nutrition (n = 61), social function (n = 51), comorbidity (n = 39), and life span (n = 28). The top three high-priority independence subdomains of BADL and IADL were toilet use (n = 140), feeding (n = 134), and mobility (n = 69) among the BADL and shopping (n = 93), food preparation (n = 88), and ability to handle finances (n = 85) among the IADL.

CONCLUSIONS

BADL and IADL can be considered the most important health outcomes in clinical trials and in practice among older patients with cancer and physical vulnerabilities.

Prospective, Multi-Institutional Observational Study of Deterioration in Activities of Daily Living in Elderly Patients After Lung Cancer Surgery

Introduction

To determine the rate of deteriorating activities of daily living (ADL) and to investigate predictive factors in elderly patients undergoing surgery for NSCLC.

Methods

Patients with NSCLC aged 75 years or older who underwent curative surgical resection were evaluated using the Tokyo Metropolitan Institute of Gerontology Index of Competence Instrumental ADL (TMIG-IADL) and the Japanese version of EuroQol 5-dimensions 5-level (EQ-5D-5L) quality-of-life scale administered at baseline and at 6 months postoperative. The primary end point was the rate of living patients without substantial deterioration of TMIG-IADL, defined as a decline greater than or equal to three points. Multivariable logistic regression was performed to determine risk factors for deteriorating ADL.

Results

Between May 2019 and May 2020, 876 of the 986 screened patients enrolled from 47 institutions were eligible and included in the analysis. TMIG-IADL and EQ-5D-5L scores were obtained from 96.0% and 92.6% of the patients, respectively. At 6 months postoperative, 745 patients (85.1%, 95% confidence interval: 82.5%-87.3%) reported no significant ADL deterioration, and 96 of 841 patients (11.4%) with postoperative score data reported significant deterioration. The social domain was the most frequently affected activity. In multivariable analysis, poor performance status, low G8 geriatric screening score, segmentectomy (versus wedge resection), and surgery lasting less than 3 hours were associated with deteriorating ADL. Worsening EQ-5D-5L scores by minimally important difference or more were observed in 22.1% of the patients. Changes in TMIG-IADL and EQ-5D-5L scores were poorly correlated.

Conclusions

Approximately 15% of elderly patients with NSCLC experienced significant ADL deterioration at 6 months postoperative.

Patient-reported outcome and quality of life research policy: Japan Clinical Oncology Group (JCOG) policy

Assessments of patient-reported outcomes and health-related quality of life in cancer clinical trials have been increasingly emphasized recently because patient and public involvement in cancer treatment development has been promoted by regulatory authorities and academic societies. To assess patient experiences during and after cancer treatment, there is interest in implementing patient-reported outcome and health-related quality of life assessments into cancer clinical trials. The Japan Clinical Oncology Group quality of life ad hoc committee previously created a version of the Quality of Life Assessment Policy in 2006. Recently, there has been increasing demand from Japan Clinical Oncology Group researchers to assess patient-reported outcome/health-related quality of life in clinical trials. Although guidelines are available regarding planning and reporting clinical trials that include patient-reported outcome/health-related quality of life as an endpoint, there are still issues regarding the lack of consensus on standardized methods for analysing and interpreting the results. Hence, it was considered necessary to reorganize the Japan Clinical Oncology Group patient-reported outcome/quality of life research committee and to revise the former patient-reported outcome/quality of life research policy to promote patient-reported outcome/health-related quality of life research in future Japan Clinical Oncology Group trials. The purpose of this Japan Clinical Oncology Group patient-reported outcome/quality of life research policy is to define patient-reported outcome/health-related quality of life research and provide guidelines for including patient-reported outcome/health-related quality of life as an endpoint in Japan Clinical Oncology Group trials.

Practical management of older adults with cancer: geriatric oncology in Japan

Japan has the highest proportion of older adults globally, and the average life expectancy of the Japanese population has increased in recent decades. Given that the incidence of cancer increases with age, it is a major health concern for older adults. However, geriatric oncology is a relatively new field and collaboration between oncologists and geriatricians in Japan is limited. Hence, oncologists and other healthcare professionals engaged in cancer care have not been able to adequately understand geriatric care, and information and experience are insufficient for this specific population. Thus, they may struggle with the assessment and management of older adults with cancer. Recently, several Japanese academic societies for cancer have developed practical guidelines and research policy with regard to geriatric research in older adults with cancer, in addition to organizing symposia and workshops focusing especially on geriatric oncology. Furthermore, because the Japan Geriatrics Society established a discipline committee on cancer, close collaboration between oncologists and geriatricians has grown steadily. Geriatric oncology is currently recognized as an important field of cancer care in Japan. The integration of oncology and geriatric care is anticipated in the near future. However, understanding the aspects of geriatric care and meanings of technical jargons used in geriatric oncology is difficult. Accordingly, this article provides an overview of the current knowledge and recent advancements in geriatric oncology. In addition, it outlines the current status and problems of geriatric oncology in Japan.

Serum autotaxin level predicts future cardiac events in patients with dilated cardiomyopathy

Background

Autotaxin (ATX) has been reported to promote myocardial inflammation and subsequent cardiac remodeling through lysophosphatidic acid (LPA) production. However, the prognostic impact of ATX has not been clarified in dilated cardiomyopathy (DCM).

Purpose

We aimed to investigate the prognostic impact of ATX in patients with DCM.

Methods

We enrolled 104 DCM patients (49.8 years, 76 males). The subjects underwent blood sampling, echocardiography, cardiac catheterization, and endomyocardial biopsy. Gender differences in serum ATX levels have been reported, thus we divided the subjects into two groups using median serum ATX levels for men and women: High-ATX group and Low-ATX group. All patients were followed up by expert cardiologists. The cardiac event was defined as a composite of cardiac death and hospitalization for worsening heart failure.

Results

Eighty-nine percent of the subjects were classified as New York Heart Association functional class I or II. Female patients had higher serum ATX levels than male patients, with median values of 257.0 ng/mL and 203.5 ng/mL, respectively (Figure A). The average left ventricular ejection fraction and brain natriuretic peptide levels were 30.6% and 122.5 pg/mL. In survival analysis, cumulative event-free probability was significantly lower in High ATX group (p=0.007, Figure B). In Cox proportional hazards analysis, High-ATX was one of the independent predictors of composite cardiac events (Hazards Ratio, 2.575; p=0.043). On the other hand, high sensitive C-reactive protein and collagen volume fraction in myocardial samples were not significant predictors.

Conclusion

High serum ATX level was associated with poor prognosis in patients with DCM.

Funding Acknowledgement

Type of funding sources: None. Gender difference in autotaxin levelsSurvival analysis of cardiac events

Clinical significance of spleen size in patients with heart failure

Background

The spleen is an important organ that stores blood, releases erythrocytes or monocytes, and destroys no-longer-needed platelets. It can reserve 20–30% of the total blood volume, and its size is reduced in hypovolemic shock. However, the clinical significance of the spleen size in patients with heart failure (HF) remains unclear.

Purpose

The purpose of this study was to investigate the relationship between spleen size, hemodynamic parameters, and prognosis in patients with HF.

Methods

A total of 219 patients with clinically stable HF were enrolled. All patients underwent right heart catheterisation and computed tomography. The spleen size was measured using computed tomography volumetry. In addition, spleen volume was assessed using the spleen volume index (SVI), corrected for body surface area. Cardiac events were composite endpoints of cardiac death, hospitalisation for worsening HF, fatal arrhythmias, implantation of cardiac devices, implantation of left ventricular assist devices, and unexpected percutaneous coronary intervention or cardiac surgery. Spearman's rank correlation coefficient was used to examine the relationship between spleen volume and hemodynamic parameters. Multivariate Cox hazard regression models were used to investigate whether SVI was an independent determinant of cardiac events.

Results

Of the 219 patients (median age, 54 [interquartile range] 46–64 years), 145 (66%) were males. The median (interquartile range) spleen volume and SVI was 118.0 (91.5–156.0) mL and 67.8 (54.9–87.2) mL/m2, respectively. SVI was positively correlated with cardiac output (r=0.269, P&lt;0.001), and negatively correlated with systemic vascular resistance (r=−0.302, P&lt;0.001) (Figure 1). A total of 70 cardiac events were observed, and the optimal cut-off value of SVI for cardiac events was 68.9 mL/m2 in the receiver operating characteristic analysis. Patients were divided into two groups: low-SVI (n=107, &lt;68.9 mL/m2) and high-SVI groups (n=112, ≥68.9 mL/m2). Blood adrenaline concentration was higher in the low-SVI group than in the high-SVI group (0.039 [0.020–0.057] ng/mL vs 0.026 [0.014–0.044] ng/mL, P=0.004). The low-SVI group had more cardiac events than the high-SVI group (log-rank test, P&lt;0.001) (Figure 2). In the multivariate Cox proportional hazard model, the low-SVI group was an independent predictor of cardiac events, even when adjusted for the conventional validated HF risk score, blood catecholamine levels, and hemodynamic parameters.

Conclusion

The spleen size may affect the prognosis in patients with HF, reflecting haemodynamics, including systemic circulating blood volume status and sympathetic nerve activity.

Funding Acknowledgement

Type of funding sources: None. Figure 1Figure 2

Clinical impact of pulmonary artery to aorta diameter ratio on left ventricular reverse remodeling in patients with dilated cardiomyopathy

Background

Left ventricular reverse remodeling (LVRR) is an important predictor for a good prognosis in patients with dilated cardiomyopathy (DCM). Previous reports indicated the pulmonary artery diameter (PAD) to ascending aortic diameter (AoD) ratio as a predictor of adverse outcomes in heart failure patients. However, the impact of the PAD/AoD ratio for predicting LVRR in patients with DCM is unknown.

Aim

The aim of this study is to investigate the association between PAD/AoD ratio and LVRR in patients with DCM.

Methods

From a prospective study, clinically stable DCM patients who were investigated the LVRR on echocardiography and underwent CT at baseline were enrolled. LVRR is defined as left ventricular (LV) ejection fraction increase of 10% and a decrease in indexed LV end-diastolic diameter of 10% compared to those at baseline. PAD and AoD data was collected with nonenhanced computed tomography images at baseline.

Results

In sixty-nine patients (mean age 50.0±13.3 years), the mean LV ejection fraction was 29.8%, and mean LV end-diastolic dimension was 64.5mm, and both of which data was no significant difference between patients with or without LVRR. LVRR was observed in 23 (33.3%) patients. The PAD/AoD ratio was significantly lower in patients with LVRR than without LVRR (81.4% vs. 92.4%, p=0.003). By ROC analysis, the best cut-off for the detection of LVRR was found for a PAD/AoD ratio of 0.9. From multivariate analyses, PAD/AoD ratio was identified as a significant predictor of LVRR. After a median follow-up duration of 2.5 years, the DCM patients with PAD/AoD≥0.9 revealed a significant higher cardiac event than those with PAD/AoD&lt;0.9 (log-rank, p=0.007)

Conclusions

The PAD/AoD ratio is useful for predicting LVRR in patients with DCM. The DCM patients with high PAD/AoD ratio had a poor long-term outcome.

Funding Acknowledgement

Type of funding sources: None. ROC curve for LVRR predictionKaplan-Meier survival curves

Predicting pathological lymph node status in clinical stage IA peripheral lung adenocarcinoma

OBJECTIVES

Even with current diagnostic technology, it is difficult to accurately predict pathological lymph node status (PLNS). This study aimed to develop a prediction model of PLNS in peripheral adenocarcinoma with a dominant solid component, based on clinical and radiological factors on thin-section computed tomography, to identify patients to whom wedge resection or other local therapies could be applied.

METHODS

Of 811 patients enrolled in a prospective multi-institutional study (JCOG0201), 420 patients with clinical stage IA peripheral lung adenocarcinoma having a dominant solid component were included. Multivariable logistic regression was performed to develop a model based on clinical and centrally reviewed radiological factors. Leave-one-out cross-validation and external validation analyses were performed, using independent data from 221 patients. Sensitivity, specificity and concordance statistics were calculated to evaluate diagnostic performance.

RESULTS

The formula for calculating the probability of pathological lymph node metastasis included the following variables: tumour diameter (including ground-glass opacity), consolidation-to-tumour ratio and density of solid component. The concordance statistic was 0.8041. When the cut-off value associated with the risk of incorrectly predicting negative pathological lymph node metastasis (pN-) was 4.9%, diagnostic sensitivity and specificity in predicting PLNS were 95.7% and 46.0%, respectively. The concordance statistic for the external validation set was 0.7972, and diagnostic sensitivity and specificity in predicting PLNS were 95.4% and 40.5%, respectively.

CONCLUSIONS

The proposed model is clinically useful and successfully predicts pN- in patients with clinical stage IA peripheral lung adenocarcinoma with a dominant solid component.

A randomized phase III study comparing trastuzumab emtansine with trastuzumab, pertuzumab and docetaxel in elderly patients with advanced stage HER2-positive breast cancer: Japan Clinical Oncollgy Group Study (JCOG1607, HERB TEA study)

The standard first-line treatment for patients with human epidermal growth factor 2-positive metastatic breast cancer is a combination therapy of trastuzumab, pertuzumab and docetaxel, and the standard second-line treatment is trastuzumab emtansine. However, it may be difficult for the elderly to maintain sufficient intensity of treatment due to severe adverse events of trastuzumab, pertuzumab and docetaxel. The aim of this trial is to confirm the non-inferiority of trastuzumab emtansine over trastuzumab, pertuzumab and docetaxel in terms of overall survival in elderly (65-year-old or more) patients with human epidermal growth factor 2-positive metastatic breast cancer. If improved overall survival and fewer toxicities are observed, trastuzumab emtansine may be a feasible new standard first-line treatment for elderly patients with human epidermal growth factor 2-positive metastatic breast cancer. A planned total 330 patients will be enrolled from 45 institutions over 6.5 years. This trial has been registered in the UMIN Clinical Trials Registry as UMIN000030783 [http://www.umin.ac.jp/ctr/index.htm].

Barriers and facilitators of geriatric assessment implementation in daily oncology practice: A qualitative study applying a theoretical implementation framework

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Background: Geriatric assessment (GA) is recommended in various guidelines for older adults with cancer, but is not widely used in daily practice. This study aims to identify multi-level barriers and facilitators of GA implementation in daily oncology practice, based on a theoretical implementation framework. Methods: We conducted 20 semi-structured interviews with healthcare providers and managers in 14 hospitals treating older adults with cancer in Japan. The Consolidated Framework for Implementation Research (CFIR) was used to guide the collection and analysis of interview data using a deductive approach. CFIR consists of 5 major domains (I. intervention characteristics, II. outer setting, inner setting,. individual characteristics, and V. process), including 39 constructs. Differences in the constructs influencing GA implementation between hospitals where GA is routinely performed (high implementation, HI) and hospitals where GA is not performed or performed only in clinical trials (low implementation, LI) were explored. Results: Among constructs identified as barriers or facilitators of GA implementation, 15 multi-level constructs greatly differed between 5HI and 5LI, including 4 constructs from intervention characteristics, 6 from inner setting, 1 from individual characteristics, and 4 from process. In HI, GA was self-administered (I. adaptability), or administered on a mobile app with interpretation (I. design quality and packaging). In HI, healthcare providers strongly perceived the need to change the practice for older adults (III. tension for change), and recognized GA as fitting in with existing workflow as part of their jobs (III. compatibility). In LI, they did not realize the need to change practice, and rejected GA as an extra burden on their heavy workload. In HI, the usefulness of GA was widely recognized by healthcare providers (IV. knowledge and beliefs about the intervention), GA was given high priority (III. relative priority), had strong support from hospital directors and nursing chiefs (V. leadership engagement), and multiple stakeholders were successfully engaged, such as healthcare providers, especially nurses (V. key stakeholders), directors and nursing chiefs (V. opinion leaders), and those who dedicated themselves to implementing GA (champions). Conclusions: This is the first study to reveal the multi-level barriers and facilitators of GA implementation in daily oncology practice. The findings highlight the need to focus not only on individual or intervention characteristics, but also on the inner setting and the process of implementing GA. Our findings suggest future strategies, such as devising the administration of GA using technology, conducting local needs assessment and consensus discussions about the usefulness and priority of GA, and engaging multiple stakeholders.

Activity of daily living of elderly patients with gastric cancer after surgery

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Background: Elderly patients are concerned with the physical burden of cancer treatments. This study aimed at investigating the reduction of the activity of daily living (ADL), length of hospital stay and readmission rate after surgery for gastric cancer. Methods: Insurance claim data linked with hospital-based cancer registries in Japan for gastric cancer patients diagnosed in 2015 from 431 hospitals was used. This data is expected to cover 49.0% of new cancer cases in Japan. To compare the effect of the treatment by age group, we analyzed the reduction of ADL between admission and discharge, length of hospital stay and readmission rate after endoscopic submucosal dissection (ESD) or endoscopic mucosal resection (EMR) for patients with cT1N0M0, and open surgery for patients with cM0. Patients who aged 40 years or older with independent ADL at admission for their first-course treatment was included. ADL was assessed using Barthel index (0-100 points). ADL decrease by 10 points or more was identified as ADL reduction. Results: Overall, 25,521 patients receiving ESD/EMR and 10,527 patients receiving open surgery were identified. ADL reduction after ESD or EMR under 80 years old was less than 1%, while over 80 years old ADL reduction was more than 2.5%. Length of hospital stay (11 days) and unexpected readmission rate (2 to 3 %) was almost similar. ADL reduction after open surgery under 75 years old was less than 3%. This reduction rates have increased with age, 11.5% for over 85 years old. Length of hospital stay also tended to increase by age (21 days for under 65 years old, 29 days for over 85 years old). Unexpected readmission rate for over or 80 years old (1.4%) was slightly higher under 80 years old (less than 1%). Conclusions: The effect of ADL reduction after ESD/EMR was not so significant for patients over 80 years old. While ADL reduction after open surgery tended to increase for aged 80 years and older. Providing these information to elderly patients and their families can be important in deciding treatment options.[Table: see text]

A multi-institutional randomized phase III study comparing weekly carboplatin plus nab-paclitaxel and daily low-dose carboplatin as regimens for concurrent chemoradiotherapy in elderly patients with unresectable locally advanced non-small cell lung cancer: Japan Clinical Oncology Group Study JCOG1914

Daily low-dose carboplatin plus concurrent thoracic radiotherapy is the standard treatment for elderly patients with unresectable clinical stage (c-Stage) III non-small cell lung cancer (NSCLC) in Japan. However, a phase I study by Omori et al. suggests that weekly carboplatin and nab-paclitaxel plus concurrent thoracic radiotherapy have comparable efficacy outcomes with more manageable adverse events. In December 2020, we initiated a randomized controlled trial in Japan to confirm whether the weekly carboplatin plus nab-paclitaxel regimen is noninferior to the daily low-dose carboplatin regimen for concurrent chemoradiotherapy in elderly patients with unresectable c-Stage III NSCLC. We plan to enroll 166 patients from 50 institutions in 3.5 years. The primary endpoint is overall survival. The secondary endpoints are progression-free survival, response rate, proportion of patients starting maintenance durvalumab therapy, adverse events, site of progression, Functional Assessment of Cancer Therapy-Trial Outcome Index deterioration and Instrumental Activities of Daily Living deterioration.

Abstract PS9-57: Estimation of willingness-to-pay for breast cancer treatments through contingent valuation method in Japanese breast cancer patients (JCOG1709A); preliminary study findings

BackgroundIn 2019, the Japanese government has decided to introduce the economic valuation to healthcare system. However, the threshold for determining cost-effectiveness-analysis has yet to be adequately studied. Therefore, we have designed a study to examine the financial value of “life” and “health” based on willingness-to-pay (WTP) considered by approximately 1,800 patients with primary and metastatic breast cancer (PBC and MBC) in Japan. Preliminary study has been conducted to set the amount of WTP prior to the main study. Methods This study is conducted by six leading hospitals under the Breast Cancer Study Group of Japan Clinical Oncology Group (JCOG). 168 patients (84 patients with PBC and 84 patients with MBC) from 20 to 79 years of age paying medical costs were examined their WTP for setting up the dichotomous-choice method survey form. Virtual scenario-specific treatments to avoid the recurrence and death of breast cancer for one year for PBC patients, and to prolong the survival period for one year for the patients with MBC were presented. The patients were evaluated how much money would pay to receive the treatment in a self-written answer. The amount of WTP that will be presented in the main study was determined by calculating the median price from these responses based on the protocol. In addition, we conducted surveys of quality-of-life by EQ-5D-5L, social background on patients, and of breast cancer medical condition on doctors. Results Completed surveys were collected from 166 doctors (98.8%) and 139 patients (82.7%). The range of the amount of WTP for scenario-specific treatments among the patients with the patients with PBC was from 0 to 5 million Japanese yen (JPY) (50,000 USD), and among the patients with MBC was from 0 to 10 million JPY (100,000 USD). In accordance with the criteria set forth in advance in the protocol, the amount of WTP that will be presented in the main study was set at 5 million JPY in both PBC and MBC patients. Conclusion We have fixed the cost that will be presented in the main study based on the findings of our preliminary study. The main study will commence around September 2020.

Citation Format: Tsuguo Iwatani, Fumikata Hara, Tadahiko Shien, Masato Takahashi, Norikazu Masuda, Hiroyuki Yasojima, Yasuaki Sagara, Tomonori Mizutani, Keita Sasaki, Kenichi Nakamura, Haruhiko Fukuda, Takaru Shiroiwa, Hiroji Iwata. Estimation of willingness-to-pay for breast cancer treatments through contingent valuation method in Japanese breast cancer patients (JCOG1709A); preliminary study findings [abstract]. In: Proceedings of the 2020 San Antonio Breast Cancer Virtual Symposium; 2020 Dec 8-11; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2021;81(4 Suppl):Abstract nr PS9-57.

New methods for determination of the keyhole position in the lateral suboccipital approach to avoid transverse-sigmoid sinus injury: Proposition of the groove line as a new surgical landmark

PURPOSE

The asterion is frequently used as an anatomical landmark to determine the location of a keyhole in the lateral suboccipital approach used in craniotomies. However, the asterion may not be ideal because of large individual differences among patients. We examined a simple and safe method for determining an optimal keyhole position (KP) using the digastric groove as a new landmark in the lateral suboccipital approach.

METHODS

Thirty-three patients with trigeminal neuralgia who underwent surgery in our institute between April 2014 and December 2018 were included. The groove line (GL) was designed accurately, extending the digastric groove on the surface of the occipital bone, as the x-axis. The y-axis was depicted from the posterior edge of the digastric groove (the groove point: GP) vertical to the GL. The x-y coordinates represented the distances from GP on each axis. The x-y coordinates of median edge of the transverse-sigmoid sinus (TSJ point), asterion, and the intersection of the GL and transverse sinus (the transverse point: TP) were investigated, based on intraoperative findings and recorded videos.

RESULTS

The x-y coordinated of the TSJ point were (23.9±3.9, 7.2±3.6). In all patients, the TSJ point was located superior to the GL. The x-y coordinates of the asterion were (27.3±6.0, 8.9±4.1), and in 28 of the 33 patients, their coordinates exceeded the TSJ points. The x-coordinate of the TP was 29.5±4.5, and was located behind the TSJ point on the GL in all patients. The shortest distance between the TSJ points and TP was approximately 3mm. According to these measurements, we decided that the optimal KP would be at 20mm from the GP, subjacent to the GL.

CONCLUSIONS

Our methods of using the GL as a new surgical landmark for setting the optimal KP is simple, safe, and useful.

A phase III study of adjuvant chemotherapy in patients with completely resected, node-negative non–small cell lung cancer (JCOG 0707)

Objective

To evaluate efficacy of S-1 (tegafur/gimeracil/oteracil), an active novel fluoropyrimidine, as compared to UFT (tegafur/uracil) as a postoperative adjuvant therapy in patients with node-negative non–small cell lung cancer (NSCLC).

Methods

Eligible patients had undergone complete resection of p-stage I (T1 with tumor diameter >2 cm or T2-N0M0 by 5th edition Union for International Cancer Control TNM) NSCLC, and were randomized to receive oral UFT 250 mg/m²/day for 2 years (Arm A) or oral S-1 80 mg/m²/day for 2 weeks with a 1-week rest period, for 1 year (Arm B). The primary end point was relapse-free survival (RFS), with 80% power and a one-sided type I error of 0.05.

Results

From November 2008 to December 2013, 963 patients were enrolled (Arm A: 482, Arm B: 481). Toxicities (hematologic/nonhematologic) of grade 3 or more were observed in 15.9 (1.5/14.7)% in Arm A, and in 14.9 (3.6/12.1)% in Arm B, respectively. At data cut-off in December 2018, the hazard ratio for RFS was 1.06 (95% confidence interval, 0.82-1.36), showing no superiority of S-1 over UFT. The hazard ratio of overall survival (OS) was 1.10 (95% confidence interval, 0.81-1.50). The 5-year RFS/OS were 79.4%/88.8% in Arm A and 79.5%/89.7% in Arm B, respectively. The original NSCLC accounted for 58%/53%, respectively, of the Arm A/Arm B OS events. Secondary malignancies were observed in 85 (17.8%) and 84 (17.8%) individuals in Arm A and Arm B, respectively.

Conclusions

S-1 was not superior to UFT as postoperative adjuvant therapy in node-negative NSCLC. Future investigation should incorporate identification of high-risk populations for recurrence.

Sublobar resection versus lobectomy for patients with resectable stage I non-small cell lung cancer with idiopathic pulmonary fibrosis: a phase III study evaluating survival (JCOG1708, SURPRISE)

The standard treatment for the patients with surgically resectable early non-small cell lung cancer (NSCLC) is lung lobectomy. However, if patients have idiopathic pulmonary fibrosis combined with early stage lung cancer, there is no standard treatment for this population. Patients with idiopathic pulmonary fibrosis have chronic progressive decline in respiratory function; thus, the preservation of respiratory function is essential. The aim of this trial is to confirm the clinical effectiveness of sublobar resection such as wedge resection or segmentectomy for early NSCLC with idiopathic pulmonary fibrosis compared with lobectomy in a randomized phase III trial. The primary endpoint is overall survival. If the non-inferiority of overall survival and minimal invasiveness are proven, it can be a new standard treatment for early NSCLC with idiopathic pulmonary fibrosis. A planned total 430 patients will be enrolled from 50 institutions over 5 years. This trial has been registered in the UMIN Clinical Trials Registry with code UMIN000032696 [http://www.umin.ac.jp/ctr/index.htm].

A randomized phase III study comparing continuation and discontinuation of PD-1 pathway inhibitors for patients with advanced non-small-cell lung cancer (JCOG1701, SAVE study)

The development of PD-1 pathway inhibitors has dramatically altered the treatment of advanced/recurrent non-small-cell lung cancer patients. However, the prognostic significance of their ongoing usage is controversial, especially for patients who have not progressed for a period of time. If discontinuation has no negative impact on survival, suspension may reduce side effects from toxicity and help alleviate the economic burdens on health insurance systems and patients. This randomized controlled trial enrolls patients who have responded well to PD-1 pathway inhibitors for >12 months. The aim is to confirm the non-inferiority of discontinuation of PD-1 pathway inhibitors, relative to continuation, in terms of overall survival. A total of 216 patients will be enrolled over 3 years. This trial has been registered in the Japan Registry for Clinical Trials as jRCT1031190032 (https://jrct.niph.go.jp/). An ancillary study examining the prognostic and predictive role of circulating tumor DNA using Guardant360® is planned.

Protocol for a single-arm confirmatory trial of adjuvant chemoradiation for patients with high-risk rectal submucosal invasive cancer after local resection: Japan Clinical Oncology Group Study JCOG1612 (RESCUE study)

INTRODUCTION

Intestinal resection with lymph node dissection is the current standard treatment for high-risk lower rectal submucosal invasive cancer after local resection; however, surgery affects patients' quality of life due to stoma placement or impaired anal sphincter function. A recent study demonstrated that adjuvant chemoradiation yields promising results.

METHODS AND ANALYSIS

This study aims to confirm the non-inferiority of adjuvant chemoradiation, consisting of capecitabine and concurrent radiotherapy (45 Gy in 25 fractions), measured by 5-year relapse-free survival (RFS), over standard surgery in patients with high-risk lower rectal submucosal invasive cancer after local resection. The primary endpoint is 5 year RFS. The secondary endpoints are 10 years RFS, 5-year and 10-year overall survival, 5-year and 10-year local RFS, 5-year and 10-year proportion of anus-preservation without stoma, Wexner score, low anterior resection syndrome score, adverse events and serious adverse events. During the 5-year trial period, 210 patients will be accrued from 65 Japanese institutions.

ETHICS AND DISSEMINATION

The National Cancer Center Hospital East Certified Review Board approved this study protocol in October 2018. The study is conducted in accordance with the precepts established in the Declaration of Helsinki and Clinical Trials Act. Written informed consent will be obtained from all eligible patients prior to registration. The primary results of this study will be published in an English article. In addition, the main results will be published on the websites of Japan Clinical Oncology Group (www.jcog.jp) and jRCT (https://jrct.niph.go.jp/). As to data curation, it has not been prepared yet.

TRIAL REGISTRATION NUMBER

jRCT1031180076.

Gradient subthalamic neurodegeneration and tau pathology in the hypoglossal nucleus as essential pathological markers of progressive supranuclear palsy - Richardson syndrome

Progressive supranuclear palsy - Richardson syndrome (PSP-RS) was first described in 1964 by Steele et al. Tau pathology has not been reported in the hypoglossal nuclei of PSP-RS patients, whereas Steele et al. described gliosis with no remarkable neuronal losses in the hypoglossal nucleus. This study aimed to investigate the distribution and degree of tau pathology-associated neurodegeneration, with an emphasis on the hypoglossal nucleus, in patients with PSP-RS. Six clinicopathologically proven PSP-RS cases were included in this study. All patients were clinicopathologically and immunohistochemically re-evaluated. This study confirmed the following neuropathological characteristics of PSP-RS: (1) neurodegeneration usually affects the striatonigral system and cerebellar dentate nucleus; (2) the cerebellar afferent system in PSP-RS is affected by absent-to-mild neurodegeneration; and (3) the extent of tau distribution throughout the central nervous system is greater than the extent of neurodegeneration. Furthermore, we found that subthalamic neurodegeneration was more prominent in the ventromedial region than in the dorsolateral region. Nevertheless, the tau pathology showed no remarkable differences between these two sites. Interestingly, the tau pathology was frequently observed in the hypoglossal nuclei of PSP-RS patients. Gradient neurodegeneration of the subthalamus and tau pathology in the hypoglossal nucleus could be regarded as essential pathological features of PSP-RS.

Comparison of survival between primary debulking surgery and neoadjuvant chemotherapy for stage III/IV ovarian, tubal and peritoneal cancers in phase III randomised trial

BACKGROUND

Regarding the comparison between primary debulking surgery (PDS) and neoadjuvant chemotherapy (NACT) for stage III/IV ovarian, tubal and peritoneal cancers, EORTC55971 and CHORUS studies demonstrated noninferiority of NACT. Previously, we reported reduced invasiveness of NACT in JCOG0602. This is a final analysis including the primary endpoint of overall survival (OS).

METHODS

Patients were randomised to PDS (PDS followed by 8x paclitaxel and carboplatin, i.e. TC regimen) or NACT (4x TC, interval debulking surgery [IDS], 4x TC). The primary endpoint was OS. The noninferiority hazard ratio (HR) margin for NACT compared with PDS was 1·161. The planned sample size was 300.

FINDINGS

Between 2006 and 2011, 301 patients were randomised, 149 to PDS and 152 to NACT. The median OS was 49·0 and 44·3 months in the PDS and NACT. HR for NACT was 1·052 [90·8% confidence interval (CI) 0·835-1·326], and one-sided noninferiority p-value was 0·24. Median progression-free survival was 15·1 and 16·4 months in the PDS and NACT (HR: 0·96 [95%CI 0·75-1·23]). In the PDS arm, 147/149 underwent PDS and 49/147 underwent IDS. In the NACT arm 130/152 underwent IDS. Complete resection was achieved in 12% (17/147) of PDS and 31% (45/147) of PDS ± IDS in the PDS arm and in 64% (83/130) of IDS in the NACT arm. Optimal surgery (residual tumour <1 cm) was achieved in 37% (55/147), 63% (92/147), and 82% (107/130 respectively. In the NACT, PS 2/3, serum albumin ≤2·5, CA125 > 2000 an institution with low study activity was advantageous, whereas clear/mucinous histology was disadvantageous for OS.

INTERPRETATION

The noninferiority of NACT was not confirmed. NACT may not always be a substitute for PDS. However, as our study had smaller numbers, the noninferiority of the previous studies cannot be denied.

FUNDING

Ministry of Health, Labour and Welfare, Japan and the National Cancer Center, Japan.

CLINICAL TRIAL INFORMATION

UMIN000000523.

Geriatric Research Policy: Japan Clinical Oncology Group (JCOG) policy

Due to the rapid aging of Japan’s population, clinical research focusing on older patients with cancer is urgently needed. The Japan Clinical Oncology Group (JCOG) has conducted several such clinical trials, but there has been no formal policy for geriatric research. We have therefore established a JCOG policy for geriatric cancer research.

We defined the patient selection policy based on treatment tolerance and chronological age. Older patients are categorized into three conceptual groups: ‘fit patients’ who can undergo the same standard treatment given to younger patients, ‘frail patients’ for whom best supportive or palliative care is indicated and ‘vulnerable patients’ who fall between the fit and frail categories. Unmet needs often exist for vulnerable patients.

The policy recommends that study endpoints include not only survival but also other endpoints such as physical and cognitive function because the objective of therapy in older patients is not only extended life expectancy but also maintenance of the patient’s general condition. In this viewpoint, co-primary or composite endpoints that incorporate geriatric assessment in the study design are often applicable.

Study design will differ depending on the study population, clinical question, and treatment. Even for older patients, a randomized clinical trial is still the gold standard when the clinical question asks which treatment is better. An observational study of a broader population is applicable for investigating actual conditions of older patients.

This JCOG Geriatric Research Policy includes several practical solutions for various issues in geriatric research. We plan to revise this policy periodically to guide future geriatric research.

Long-term survival outcome after lobectomy in patients with clinical T1 N0 lung cancer

OBJECTIVE

The aim of this study was to assess long-term outcomes after lobectomy in patients with clinical T1 N0 lung cancer based on thin-section computed tomography.

METHODS

We collected the data of patients with pathological adenocarcinoma who had undergone lobectomy. The patients were categorized into 4 groups according to a consolidation tumor ratio and tumor size. Groups A and B included tumors with consolidation tumor ratio ≤0.5 and size ≤3 cm. Group A consisted of tumors ≤2 cm. Group B consisted of the remaining tumors. Groups C and D consisted of tumors with consolidation tumor ratio >0.5. Group C consisted of those with tumors ≤2 cm and Group D consisted of tumors of size 2 to 3 cm. The 10-year overall survival and recurrence-free survival rates were examined.

RESULTS

Among the 543 patients, the 10-year overall survival was 80.4% and the 10-year recurrence-free survival rate was 77.1%. The 10-year overall survival for group A was 94.0%, 92.7% for group B, 84.1% for group C, and 68.8% for group D, and the 10-year recurrence-free survival rate for each group was 94.0%, 89.0%, 79.7%, and 66.1%, respectively. Group A + B showed better overall survival than group C + D (hazard ratio, 2.78; 95% confidence interval, 1.45-5.06) and better 10-year recurrence-free survival (hazard ratio, 2.74; 95% confidence interval, 1.55-4.88). No patient in group A had recurrence.

CONCLUSIONS

Those patients with total tumor size ≤3 cm and consolidation tumor ratio ≤0.5 showed excellent prognosis and might be suitable candidates for sublobar resection. If noninferior survival of segmentectomy compared with lobectomy is confirmed in an ongoing Japan Clinical Oncology Group trial, segmentectomy will be included in the standard of care.

An African pygmy hedgehog adenovirus 1 (AhAdV-1) outbreak in an African pygmy hedgehog (Atelerix albiventris) colony in Japan

•

A novel adenovirus outbreak occurred in a colony of African pygmy hedgehogs (APHs).

•

An African pygmy hedgehog adenovirus 1 (AhAdV-1) infection was confirmed in 13 APHs.

•

AhAdV-1 was isolated from one APH.

•

Five APHs died during the outbreak and AhAdV-1 can cause fatal pneumonia in a case.

•

AhAdV-1 should be monitored as a potential cause of emerging infections in APHs.

An African pygmy hedgehog adenovirus 1 (AhAdV-1) outbreak in a colony of 24 African pygmy hedgehogs (APHs) with a case of fatal pneumonia occurred in Japan. Thirteen out of a colony of 15 APHs with respiratory symptoms were diagnosed with AhAdV-1 infection based on the detection of AhAdV-1 genome in throat/nasal swabs and further one APH was diagnosed on isolation of the virus. Five infected APHs died during the outbreak and AhAdV-1 caused severe pneumonia and death in one case. After the outbreak, persistent AhAdV-1 infection was suggested in one surviving APH. AhAdV-1 is a novel adenovirus and is suspected to be an emerging pathogen.

Confirmatory trial of non-amputative digit preservation surgery for subungual melanoma: Japan Clinical Oncology Group study (JCOG1602, J-NAIL study protocol)

BACKGROUND

Amputation is the standard of care even for early-stage subungual melanomas (SUMs), known as nail apparatus melanoma, because the nail bed and nail matrix are close to the distal phalanx. However, a recent study demonstrated that not all patients with SUMs had histologic invasion of the underlying distal phalanx. As most SUMs occur in the thumb or big toe, amputation of either the thumb or big toe substantially interferes with activities of daily living, including poor cosmesis, loss of function, and phantom pain. Non-amputative digit preservation surgery can thus be applied in such cases without compromising patient prognosis.

METHODS

We are conducting a multi-institutional single-arm trial to confirm the safety and efficacy of non-amputative digit preservation surgery. We will compare our results with those reported in the Japanese Melanoma Study, in which patients underwent amputation for SUMs as a traditional standard of care. Patients aged between 20 and 80 years with stage I, II, or III without evidence of tumor invasion to the underlying distal phalanx on preoperative radiograph are included in the study. The primary endpoint is major relapse-free survival (major RFS), which does not include local recurrence as an event; secondary endpoints include overall survival, digit-preservation survival, relapse-free survival, local relapse-free survival, partial relapse-free survival, and incidence of adverse events. A total of 85 patients from 21 Japanese institutions will be recruited within 5.5 years, and the follow-up period will last at least 5 years. The Japan Clinical Oncology Group Protocol Review Committee approved this study protocol in August 2017, and patient enrollment began in November 2017. Ethical approval was obtained from each institution's Institutional Review Board prior to patient enrollment.

DISCUSSION

This is the first prospective trial to confirm the safety and efficacy of non-amputative digit preservation surgery for SUM without distant metastasis or bony invasion. The results of this trial could provide evidence to support this less-invasive surgery as a new standard of care to preserve adequately functioning digits.

TRIAL REGISTRATION

Registry number: UMIN000029997 . Date of Registration: 16/Nov/2017. Date of First Participant Enrollment: 12/Dec/2017.

Cough related to swallowing in asthma patients

Background

Occurrence of cough during swallowing is common among asthma patients, but has not been investigated in detail.

Objective

We conducted an observational study to determine the prevalence of swallowing-related cough (SRC) and its characteristics in asthma patients.

Methods

Asthma patients attending our outpatient department between May 2005 and April 2007 were interviewed to investigate if they had ever experienced SRC, as well as postnasal drip or heartburn and cough related to these conditions.

Results

Among 417 patients who completed the questionnaire, 121 patients (29.0%) had experienced SRC. Spicy and sour foods were the most frequent tussigenic foods, causing cough in 76.0% and 53.7% of the 121 patients, respectively. In patients without SRC, the prevalence rates of postnasal drip and postnasal drip-induced cough were 35.8% (106 of 296) and 7.8% (23 of 296), respectively. The corresponding prevalence rates in patients with SRC were 50.4% (61 of 121) and 37.2% (45 of 121), which were both significantly higher than in patients without cough (p = 0.006 and p < 0.001 respectively). In patients without SRC, the prevalence rates of heartburn and heartburn-induced cough were 22.2% (66 of 296) and 2.4% (7 of 296), respectively. The corresponding prevalence rates in patients with SRC were 45.5% (55 of 121) and 16.5% (20 of 121), with both being significantly higher than in patients without cough (p = 0.002 and p < 0.001, respectively).

Conclusion

SRC was frequent in asthma patients, and was closely related to postnasal drip and heartburn. Irritable larynx is one of the possible underlying mechanisms of SRC. This study was registered with the University Hospital Medical Information Network clinical trials registry (registration number: UMIN000017426).

The international collaboration of active surveillance trials for low-risk DCIS (LORIS, LORD, COMET, LORETTA)

TPS603

Background: Retrospective data suggest breast cancer-specific survival rates with versus without surgery in patients with low-grade ductal carcinoma in situ (DCIS) are similar. Some DCIS patients have a low likelihood of progression to invasive cancer, but predicting who is at risk has not been established. Thus, treatment with a well-balanced risk / benefit ratio has not been achieved. Four active surveillance clinical trials for low risk DCIS have commenced in the United Kingdom (LORIS), Europe (LORD), United States (COMET), and Japan (LORETTA). We aim to examine the effectiveness & safety of active surveillance compared with surgical based treatment approaches for low-risk DCIS patients. Methods: Non surgical approaches are of the two types; active surveillance (AS) alone and AS + endocrine therapy (ET). In the randomized trials LORIS and LORD, the study arms are AS only, but while ET is an option in COMET, ET is mandatory in the single arm trial LORETTA. COMET and LORETTA have broader inclusion criteria as compared to LORIS and LORD. In COMET, comedo necrosis is eligible. In LORETTA, findings other than calcification on mammography (MMG) are also eligible (e.g. low echo area on breast ultrasound). Leaders of the four trials hold regular meetings to foster international DCIS trials collaboration to share information. LORIS Clinical trial information: ISRCTN27544579, LORD Clinical trial information: NCT02492607, COMET Clinical trial information: NCT02926911, LORETTA Clinical trial information: UMIN000028298 [JCOG1505]. Clinical trial information: UMIN000028298, NCT02492607, NCT02926911, ISRCTN27544579. [Table: see text]

A phase III study comparing trastuzumab emtansine with trastuzumab, pertuzumab, and docetaxel in elderly patients with advanced stage HER2-positive breast cancer: (JCOG1607 HERB TEA study)

TPS1100

Background: Systemic chemotherapy with anti-HER2 therapy is the standard of care for HER2-positive advanced breast cancer. Patient outcomes have improved remarkably with the use of novel anti-HER2 drugs, including trastuzumab (H), pertuzumab (P), and trastuzumab emtansine (T-DM1). The combination treatment comprising H, P, and docetaxel (D) (HPD) is highly recommended as the 1st-line treatment for patients with HER2-positive advanced breast cancer. In contrast, for elderly patients over 65 years of age, this regimen seems to be intolerable mentally and physically, and impairs their quality of life. A new standard treatment with less toxicity and non-inferior efficacy for elderly patients is needed. Methods: We have planned a randomized, multicenter, open-label, phase III trial to confirm the non-inferiority of T-DM1 compared to HPD in terms of overall survival (OS) in elderly patients with HER2-positive advanced breast cancer. The eligibility criteria are as follows: 1) histologically proven metastatic breast cancer, 2) age 65-74 years with a performance status (PS) score 0-2, or 75-79 years with a PS score 0-1, 3) HER2 overexpression or amplification confirmed in primary or metastatic tissues, and 4) no anti-HER2 therapy with chemotherapy for breast cancer, excluding (neo) adjuvant therapy. Patients are randomized to receive either HPD (H 6 mg/kg, P 420 mg/body, and D 60 mg/m2) or T-DM1 3.6 mg/kg every 3 weeks. The dose up of D (75 mg/m2) after the second cycle is defined based on the data regarding safety during the first cycle. The primary endpoint is OS. The secondary endpoints are progression-free survival, response rate, adverse events, breast cancer-related death, and deterioration of activities of daily living. The trial is designed to achieve 70% power to confirm non-inferiority of T-DM1 to HPD at a one-sided alpha of 5% with a non-inferiority margin of 1.3 in terms of hazard ratio. With a median OS of 30 months in both arms, 6 years of accrual, and 5 years of follow up, the planned sample size is 330. The trial began in January 2018 and nineteen patients have been enrolled as of January 2019. Clinical trial information: UMIN000030783.

Abstract OT2-01-05: A randomized controlled trial comparing post-operative intensive follow-up with standard follow-up in high-risk breast cancer patients (JCOG1204: INSPIRE)

Background: The standard follow-up after surgery for breast cancer includes periodic interviews, clinical examinations, and mammography, but many institutions are conducting intensive follow-up including periodic computed tomography(CT), magnetic resonance imaging(MRI), and bone scintigraphy in the world, despite the lack of evidence to support this approach. While intensive follow-up may contribute to prolonged survival through earlier diagnosis and treatment of relapse, it has the disadvantages of high effort and costs placed on patients(pts) and healthcare workers, radiation exposure for imaging examinations, and overtreatment owing to false-positive results. Although past two randomized trials could not show significant difference in overall survival (OS), as imaging methods have remarkably improved, leading to the earlier detection of relapse, and medical therapies have remarkably improved in recent years, randomized controlled trials are needed to confirm whether intensive follow-up can really prolong survival sufficiently to offset these disadvantages in high-risk breast cancer pts.

Trial design: This study is a multi-institutional two-arm open label randomized controlled phase III trial being conducted with the participation of 42 hospitals belonging to the Breast Cancer Study Group of Japan Clinical Oncology Group. Eligible pts are randomized either to the intensive follow-up group or to the standard follow-up group; the former will undergo physical examination, bone scintigraphy, chest and abdominal CT, brain MRI/CT and frequent tumor markers, whereas the latter will undergo physical examination at the same frequency and tumor markers will be evaluated once a year. Mammography once a year is planned for both groups. This trial has been registered at the UMIN Clinical Trials Registry as UMIN000012429.

Eligibility criteria: High-risk breast cancer pts, who are expected to have recurrence rates of over 30% within 5 years after surgery. The main inclusion criteria are as follows: four or more axillary nodal metastases in the estrogen receptor (ER) positive pts without neoadjuvant chemotherapy(NC)., axillary node metastases in ER-negative pts without NC, axillary nodal metastases in ER-positive pts with NC, histologically proven residual invasive cancer in the breast or axilla in ER-negative with NC.

Specific Aims: The primary endpoint is OS, and secondary endpoints are disease-free survival, relapse-free survival, distant metastasis–free survival, OS in intrinsic subtypes, actual number of implemented examinations, compliance with pre-specified examinations, and adverse events.

Statistical methods: The primary endpoint will require a total of 538 events to be assessed in order to obtain a statistical power of 80% with a one-sided significance level of 0.05. Thus, the planned sample size to compare the two survival curves is set at 1500 pts, assuming an accrual time of 6 years and a follow-up time of 7 years according to the Schoenfeld and Richter's method.

Present accrual and target accrual: The trial was activated in November 2013. 773 pts have been enrolled by the end of June 2018.

Contact: Principal investigator Takashi Hojo MD tahojo@east.ncc.go.jp

Citation Format: Hojo T, Masuda N, Shibata T, Mizutani T, Shien T, Kinoshita T, Iwatani T, Kanbayashi C, Kitagawa D, Tsuneizumi M, Iwata H. A randomized controlled trial comparing post-operative intensive follow-up with standard follow-up in high-risk breast cancer patients (JCOG1204: INSPIRE) [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT2-01-05.

New precise measurements of muonium hyperfine structure at J-PARC MUSE

High precision measurements of the ground state hyperfine structure (HFS) of muonium is a stringent tool for testing bound-state quantum electrodynamics (QED) theory, determining fundamental constants of the muon magnetic moment and mass, and searches for new physics. Muonium is the most suitable system to test QED because both theoretical and experimental values can be precisely determined. Previous measurements were performed decades ago at LAMPF with uncertainties mostly dominated by statistical errors. At the J-PARC Muon Science Facility (MUSE), the MuSEUM collaboration is planning complementary measurements of muonium HFS both at zero and high magnetic field. The new high-intensity muon beam that will soon be available at H-Line will provide an opportunity to improve the precision of these measurements by one order of magnitude. An overview of the different aspects of these new muonium HFS measurements, the current status of the preparation for high-field measurements, and the latest results at zero field are presented.