Esophagectomy in the Older Adult: A Systematic Review

Current management of esophageal carcinoma (EC) involves combining different modalities, offering the opportunity of personalized strategies. This is particularly enticing in the geriatric population, where tailoring treatment modalities remains key to achieve good outcomes in terms of both quality of life and survival. Primary outcomes of our review included (1) evidence on short-term outcomes following esophagectomy, and (2) evidence on long-term outcomes following esophagectomy. Secondary review questions compared outcomes of (1) neoadjuvant treatment versus upfront surgery for locally advanced esophageal carcinoma, (2) endoscopic submucosal dissection versus esophagectomy for early esophageal carcinoma, and (3) definitive radiation with or without chemotherapy versus surgery. Twenty-six articles were included in the review for the main review questions. Our systematic review underscores the need for comprehensive geriatric evaluations to guide decision-making. Despite concerns about perioperative risks, well-selected older patients can derive survival benefits from surgical intervention.

Esophageal cancer in octogenarians: Should esophagectomy be done?

INTRODUCTION

Esophagectomy is the treatment of choice for esophageal cancer. In octogenarians data is conflicting. We evaluated postoperative outcomes and long-term survival of octogenarians and their younger counterparts.

MATERIALS AND METHODS

A retrospective analysis of a prospectively maintained database including consecutive patients with esophageal cancer who underwent esophagectomy at a large referral, academic center between 2012 and 2021. Subgroups were designed according to age (<70, 70-79, and ≥ 80).

RESULTS

A total of 359 patients underwent esophagectomy for esophageal cancer, 223 (62%) aged <70, 107 (30%) aged 70-79 and 29 (8%) aged ≥80. Octogenarians had higher American Society of Anesthesiologists [ASA] scores (p = 0.001), and fewer received neoadjuvant therapy (p = 0.04). Octogenarians experienced more major complications (P < 0.001) with significantly higher 30-day mortality rate (P = 0.001). In a multivariable analysis, major complications were associated with higher risk of being discharged to a rehabilitation center (odds ratio [OR] 14.839, 95% confidence interval [CI] 4.921-44.747, p < 0.001) while age was not. Overall survival was reduced in octogenarians, with a 50th percentile survival of 10 months compared to 32 and 26 months in patients age < 70 and 70-79, respectively (p = 0.014). In a multivariable analysis, age ≥ 80 (hazard ratio [HR] 4.478 95% CI 2.151-9.322, p < 0.001), cancer stage (HR 1.545, 95% CI 1.095-2.179, p = 0.013), and postoperative major complications (HR 2.705 95% CI 1.913-3.823, p < 0.001) were independently associated with reduced survival.

DISCUSSION

Our study showed that octogenarians had significantly higher postoperative major complications compared to younger age groups. Overall survival was significantly reduced in these patients, probably due to an increased rate of perioperative mortality. Better patient selection and preparation may improve postoperative outcomes and increase long-term survival.

Validation of the Pictorial Fit-Frail Scale in a Thoracic Surgery Clinic

OBJECTIVE

Examine feasibility and construct validity of Pictorial Fit-Frail scale (PFFS) for the first time in older surgical patients.

BACKGROUND

The PFFS uses visual images to measure health state in 14 domains and has been previously validated in outpatient geriatric clinics.

METHODS

Patients ≥65 year-old who were evaluated in a multidisciplinary thoracic surgery clinic from November 2020 to May 2021 were prospectively included. Patients completed an in-person PFFS and Vulnerable Elders Survey (VES-13) during their visit, and a frailty index was calculated from the PFFS (PFFStrans). A geriatrician performed a comprehensive geriatric assessment (CGA) either in-person or virtually, from which a Frailty Index (FI-CGA) and Frailty Questionnaire (FRAIL) scale were obtained. To assess the validity of the PFFS in this population, the Spearman rank correlations (r spearman ) between PFFS trans and VES-13, FI-CGA, FRAIL were calculated.

RESULTS

All 49 patients invited to participate agreed, of which 46/49 (94%) completed the PFFS so a score could be calculated. The majority of patients (59%) underwent an in-person CGA and the reminder (41%) a virtual CGA. The cohort was mainly female (59.0%), with a median age of 77 (range: 67-90). The median PFFS trans was 0.27 (interquartile range [IQR] 0.12-0.34), PFFS was 11 (IQR 5-14), and 0.24 (IQR 0.13-0.32) for FI-CGA. We observed a strong correlation between the PFFS trans and FI-CGA (r spearman = 0.81, P < 0.001) and a moderate correlation between PFFS trans and VES-13 and FRAIL score (r spearman = 0.68 and 0.64 respectively, P < 0.001).

CONCLUSIONS

PFFS had good feasibility and construct validity among older surgical patients when compared to previously validated frailty measurements.

Mobile Health Intervention to Promote Hypertension Self-Management among African Americans Receiving Care at a Community Health Center: Formative Evaluation of the FAITH! Hypertension App

BACKGROUND

African Americans (AAs) are at a higher risk of premature death from cardiovascular diseases compared to White Americans, with disproportionate attributable risk from uncontrolled hypertension. These health disparities are rooted in structural racism with resultant adverse social determinants of health (SDOH) including limited access to quality healthcare. Given their high usage among AAs, mobile technologies, including smartphones, show promise in increasing access to reliable health information. Thus, culturally tailored mobile health (mHealth) interventions may promote hypertension self-management among this population.

OBJECTIVE

This formative study assessed the feasibility of integrating an innovative mHealth intervention into clinical and community settings to improve blood pressure (BP) control among AAs.

METHODS

A mixed methods study of AA patients with uncontrolled hypertension was implemented over two consecutive phases. In Phase 1, patients and clinicians from two federally qualified health centers (FQHCs) in the Minneapolis-St. Paul, Minnesota metropolitan area provided input through a focus group series to refine an existing culturally tailored mHealth app (FAITH! [Fostering African-American Improvement in Total Health!] App) to promote hypertension self-management among AA patients with uncontrolled hypertension. Phase 2 was a single-arm pre-post intervention pilot study to assess feasibility and patient satisfaction. Patients receiving care at an FQHC participated in a 10-week intervention utilizing the refined FAITH! Hypertension App synchronized with a wireless BP monitor and support from a community health worker (CHW) to address SDOH-related social needs. The multimedia app consisted of a 10-module educational series focused on hypertension and cardiovascular risk factors with interactive self-assessments, medication/BP self-monitoring and social networking. Primary outcomes were feasibility (app engagement/satisfaction) and preliminary efficacy (change in BP) at immediate post-intervention.

RESULTS

In Phase 1, 13 AA patients (69% age ≥50, 77% female) and 16 clinicians (69% age ≥50, 88% female, 63% AA) participated in focus groups. Based on their feedback, app modifications included addition of: BP/medications-tracking, BP self-care task reminders, and culturally sensitive contexts. In Phase 2, 16 AA patients were enrolled (mean age 52.6 years [SD 12.3], 75% female). Of the 16, 38% completed at least half of 10 education modules. Seven of the 16 completed the post-intervention assessment. These patients rated the intervention a 9 (out of 10) as helpful in hypertension self-management. Qualitative data revealed that these patients viewed the app as user-friendly, engaging, and informative, and CHWs were perceived as providing accountability and support. Of the 7 patients, mean systolic and diastolic BPs decreased by 6.4 mmHg (p=.15) and 2.8 mmHg (p=.78) at immediate post-intervention, respectively.

CONCLUSIONS

A culturally tailored mHealth app, with reinforcement by CHW support, may improve hypertension self-management among under-resourced AAs receiving care at FQHCs. A future randomized efficacy trial of the intervention is warranted.

CLINICALTRIAL

Registration: ClinicalTrials.gov Identifier: NCT03777709.

“WE WILL SURVIVE … BUT I JUST WANT MORE FOR US”: DISSEMINATING PHOTOVOICE FINDINGS TO ADVANCE FOOD POLICY AND EQUITY

Poor food environments and disproportionate food insecurity among African Americans (AAs) represent determinants of chronic disease disparities by race/ethnicity. We used PhotoVoice to explore the food environment in Baltimore, MD, through the perspectives of Black residents with hypertension. Findings illuminated structural racism and classism as root causes of “food desert” conditions. Respondents provided critical analysis of existing food access barriers, including problematic policies, and offered asset-based solutions. Using an exhibition of participants’ photographs to set the tone of the discussion, we will convene a stakeholder meeting including study participants, community advisory board members, local and state government agencies, civic organizations, community farmers, agricultural organizations, non-profit food providers, churches, local restauranteurs, convenience store owners, insurance payers, and transportation providers. Discussion will center on three areas of action informed by findings: systems level issues; individual activation, agency, and advocacy; and community-based solutions. Meeting proceedings will be disseminated through academic and lay publications.

A proposal for virtual, telephone-based preoperative cognitive assessment in older adults undergoing elective surgery

Objective

To assess the feasibility of administering the MoCA 5-minute test/Telephone (T-MoCA), an abbreviated version of the Montreal Cognitive Assessment to older adults perioperatively

Design

A feasibility study including patients aged ≥ 70 years scheduled for surgery from December 2020 to March 2021

Setting

Preoperative virtual clinic

Patients

Patients ≥70 years undergoing major elective surgery

Intervention

A study investigator called eligible patients prior to surgery, obtained consent, and completed the preoperative cognitive assessment. Follow-up assessment was completed 1-month postoperatively, and participating clinicians were surveyed at the completion of the study.

Measurements

An attention test, T-MoCA, Activities of Daily Living (ADL), Instrumental Activities of Daily Living (IADL), and Generalized Anxiety Disorder 2-item (GAD-2)

Main results

Overall, 37/40 (92.5%) patients completed the pre- and post-operative assessments. The cohort was 50% female, white (97.5%), with a median age of 76 years (interquartile range (IQR) 73-79), and education level was higher than high school in 82.5% of patients. Preoperatively, the median number of medications was 8 (IQR 7-11), 27/40 (67.5%) had medications with anticholinergic effects, and 6/40 (15%) had benzodiazepines. Median completion time of the phone assessment was 10 min (IQR 8.25-12) and 4 min (IQR 3-5) for the T-MoCA with a median T-MoCA score of 13 (IQR 12-14). Most patients (37/40) completed the post-operative assessment, and 6/37 (16.2%) reported they had experienced a change in memory or attention post-operatively. Clinician’s survey reported ease and feasibility in performing T-MoCA as a preoperative cognitive evaluation.

Conclusion

Preoperative cognitive assessment of older adults using T-MoCA over the phone is easy to perform by clinicians and had a high completion rate by patients. This test is feasible for virtual assessments. Further research is needed to better define validity and correlation with postoperative outcomes.

Evaluation of prognostic risk models for postoperative pulmonary complications in adult patients undergoing major abdominal surgery: a systematic review and international external validation cohort study

BACKGROUND

Stratifying risk of postoperative pulmonary complications after major abdominal surgery allows clinicians to modify risk through targeted interventions and enhanced monitoring. In this study, we aimed to identify and validate prognostic models against a new consensus definition of postoperative pulmonary complications.

METHODS

We did a systematic review and international external validation cohort study. The systematic review was done in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We searched MEDLINE and Embase on March 1, 2020, for articles published in English that reported on risk prediction models for postoperative pulmonary complications following abdominal surgery. External validation of existing models was done within a prospective international cohort study of adult patients (≥18 years) undergoing major abdominal surgery. Data were collected between Jan 1, 2019, and April 30, 2019, in the UK, Ireland, and Australia. Discriminative ability and prognostic accuracy summary statistics were compared between models for the 30-day postoperative pulmonary complication rate as defined by the Standardised Endpoints in Perioperative Medicine Core Outcome Measures in Perioperative and Anaesthetic Care (StEP-COMPAC). Model performance was compared using the area under the receiver operating characteristic curve (AUROCC).

FINDINGS

In total, we identified 2903 records from our literature search; of which, 2514 (86·6%) unique records were screened, 121 (4·8%) of 2514 full texts were assessed for eligibility, and 29 unique prognostic models were identified. Nine (31·0%) of 29 models had score development reported only, 19 (65·5%) had undergone internal validation, and only four (13·8%) had been externally validated. Data to validate six eligible models were collected in the international external validation cohort study. Data from 11 591 patients were available, with an overall postoperative pulmonary complication rate of 7·8% (n=903). None of the six models showed good discrimination (defined as AUROCC ≥0·70) for identifying postoperative pulmonary complications, with the Assess Respiratory Risk in Surgical Patients in Catalonia score showing the best discrimination (AUROCC 0·700 [95% CI 0·683-0·717]).

INTERPRETATION

In the pre-COVID-19 pandemic data, variability in the risk of pulmonary complications (StEP-COMPAC definition) following major abdominal surgery was poorly described by existing prognostication tools. To improve surgical safety during the COVID-19 pandemic recovery and beyond, novel risk stratification tools are required.

FUNDING

British Journal of Surgery Society.

Changes in Companion Diagnostic Labelling: Implementation of FDA's April 2020 Guidance for Industry for In Vitro CDx Labeling for Specific Oncology Therapeutic Groups

Advanced understanding of the molecular pathways of oncologic diseases has shifted therapeutic treatment development to focus on mechanism of actions targeting specific genomic alterations. These precision medicines are indicated for patient subsets defined by these specific mutations as determined by diagnostic devices approved by the Food and Drug Administration (FDA). The Intended Use section within the companion diagnostic (CDx) labeling has historically specified the therapeutic products for which they have been clinically validated. In April 2020, the FDA reiterated their position that therapeutic class labeling may be used, if appropriate, instead of named products. Labels for FDA approved in vitro CDxs were reviewed to evaluate the implementation of therapeutic class labeling. A total of 47 devices have been approved as of 2 January 2022, of which 3 labels were found to contain therapeutic class labeling: two devices targeting EGFR mutations for the treatment of non-small cell lung cancer (NSCLC), and one targeting BRAF V600E and BRAF/MEK inhibitor combinations for melanoma. Two devices received therapeutic class labeling upon initial approval, while the third implemented the language though a label revision. A total of 25 different indications were identified across the 47 CDx devices, of which 9 (34.6%) were associated with more than 1 CDx device. Implementation of therapeutic class labeling has been slow following the release of the FDA’s April 2020 guidance; however, the potential to incorporate such language into existing and newly approved CDx labels exists. Precedence and manufacturer experience are expected to drive an increase in therapeutic class labeling.

Long-term Outcomes Following Esophagectomy in Older and Younger Adults with Esophageal Cancer

BACKGROUND

Patterns of overall and disease-free survival after esophagectomy for esophageal cancer in older adults have not been carefully studied.

METHODS

Retrospective analysis of all patients with esophageal cancer undergoing esophagectomy from 2005 to 2020 at our institution was performed. Differences in outcomes were stratified by age groups, < 75 and ≥ 75 years old, and two time periods, 2005-2012 and 2013-2020.

RESULTS

A total of 1135 patients were included: 979 (86.3%) patients were < 75 (86.3%), and 156 (13.7%) were ≥ 75 years old. Younger patients had fewer comorbidities, better nutritional status, and were more likely to receive neoadjuvant and adjuvant therapy (all p < 0.05). However, tumor stage and operative approach were similar, except for increased performance of the McKeown technique in younger patients (p = 0.02). Perioperatively, younger patients experienced fewer overall and grade II complications (both p < 0.05). They had better overall survival (log-rank p-value < 0.001) and median survival, 62.2 vs. 21.5 months (p < 0.05). When stratified by pathologic stage, survival was similar for yp0 and pathologic stage II disease (both log-rank p-value > 0.05). Multivariable Cox models showed older age (≥ 75 years old) had increased hazard for reduced overall survival (HR 2.04 95% CI 1.5-2.8; p < 0.001) but not disease-free survival (HR 1.1 95% CI 0.78-1.6; p = 0.54). Over time, baseline characteristics remained largely similar, while stage became more advanced with a rise in neoadjuvant use and increased performance of minimally invasive esophagectomy (all p < 0.05). While overall complication rates improved (p < 0.05), overall and recurrence-free survival did not. Overall survival was better in younger patients during both time periods (both log-rank p < 0.05).

CONCLUSIONS

Despite similar disease-free survival rates, long-term survival was decreased in older adults as compared to younger patients. This may be related to unmeasured factors including frailty, long-term complications after surgery, and competing causes of death. However, our results suggest that survival is similar in those with complete pathologic responses.

Thoracic surgery with geriatric assessment and collaboration can prepare frail older adults for lung cancer surgery

BACKGROUND AND OBJECTIVES

We assessed frailty, measured by a comprehensive geriatric assessment-based frailty index (FI-CGA), and its association with postoperative outcomes among older thoracic surgical patients.

METHODS

Patients aged ≥65 years evaluated in the geriatric-thoracic clinic between June 2016 through May 2020 who underwent lung surgery were included. Frailty was defined as FI-CGA > 0.2, and "occult frailty", a level not often recognized by surgical teams, as 0.2 < FI-CGA < 0.4. A qualitative analysis of geriatric interventions was performed.

RESULTS

Seventy-three patients were included, of which 45 (62%) were nonfrail and 28 (38%) were frail. "Occult frailty" was present in 23/28 (82%). Sixty-one (84%) had lung malignancy. Geriatric interventions included delirium management, geriatric-specific pain and bowel regimens, and frailty optimization. More sublobar resections versus lobectomies (61% vs. 25%) were performed among frail patients. Frailty was not significantly associated with overall complications (odds ratio [OR]: 2.4; 95% confidence interval [CI]: 0.88-6.44; p = 0.087), major complications (OR: 2.33; 95% CI: 0.48-12.69; p = 0.293), discharge disposition (OR: 2.8; 95% CI: 0.71-11.95; p = 0.141), or longer hospital stay (1.3 more days; p = 0.18).

CONCLUSION

Frailty and "occult frailty" are prevalent in patients undergoing lung surgery. However, with integrated geriatric management, these patients can safely undergo surgery.

Perioperative Esophagectomy Outcomes in Older Esophageal Cancer Patients in Two Different Time Eras

To investigate perioperative outcomes of esophagectomies by age groups. Retrospective analysis of esophageal cancer patients undergoing esophagectomy from 2005 to 2020 at a single academic institution. Baseline characteristics and outcomes were analyzed by 3 age groups: <70, 70-79, and ≥80 years-old. Sub-analysis was done for 2 time periods: 2005-2012 and 2013-2020. Of 1135 patients, 789 patients were <70, 294 were 70-79, and 52 were ≥80 years-old. Tumor characteristics, and operative technique were similar, except positive longitudinal margins rates (all <3%) (P = 0.008). Older adults experienced increased complications (53.6% vs 69.7% vs 65.4% respectively; P < 0.001) attributable to grade II complications (41.4% vs 62.2% vs 63.5% respectively; P < 0.001). Hospital length of stay (LOS) and rehabilitation requirements were higher in older adults (both P < 0.05). 30-day readmissions, reoperation, and 30-day mortality rates (all <2%) showed no association with age group. Overall complications, LOS, discharge disposition and re-operative rates improved from 2005 to 2012 to 2013-2020 for all (P < 0.05). Increasing age was an independent risk factor for cardiovascular complications (OR 1.7, 95% CI 1.23-2.46 for ages 70-79 and OR 2.7, 95% CI 1.37-5.10 for ages ≥80 ), inpatient rehabilitation (OR 3.3, 95% CI 2.26-5.05 for ages 70-79 and OR 12.1 95% CI 5.83-25.04 for ages ≥80), and prolonged LOS (OR 1.64 95% CI 1.16-2.31 for ages 70-79 and OR 3.6 95% CI 1.71-7.67 for ≥80. After adjusting for time period, older age remained associated with complications (P < 0.05). Highly selected older adults at a large volume esophagectomy center can undergoesophagectomy with increased minor complication and rehabilitation needs.

Geographic differences in therapy for stage I non-small-cell lung cancer in older adults

BACKGROUND

Geographic and socioeconomic factors impact patient treatment choices for certain cancers. Whether they impact treatment in older adults with lung cancer is unknown. We investigated geographic differences in treatment for stage I non-small-cell lung cancer (NSCLC) in older adults in the United States.

METHODS

Using the Surveillance, Epidemiology and End Results Database 18th submission, a cohort of stage I NSCLC patients ≥60-years-old was created. Treatment differences (surgery or radiation alone) by geographic location and socioeconomic factors were analyzed.

RESULTS

Forty-three thousand three hundred and eighty-seven stage I NSCLC patients were analyzed. Demographics and socioeconomic factors varied across all 13 states (p < 0.001). Surgery was the most common treatment in all states (range 58.6% in AK to 86.5% in CT) (all p < 0.001). Our multivariable analysis found older individuals had higher odds of getting radiation as compared to surgery (odds ratio [OR]: 1.22 for 65-69 years-old to OR: 8.95 for 85+ years-old; p < 0.001). Multiple states (LA, HI, IA, MI, WA, NM) were associated with increased odds of radiation use (vs. surgery alone) (all p < 0.05). People with lower education level (OR: 0.98) and median income (OR: 0.99) and non-Black race (OR: 0.52 for "other" to OR: 0.68 for "White" race with respect to Black race) were associated with lower odds of radiation (p < 0.05).

CONCLUSIONS

Our study identified treatment differences for stage I NSCLC patients in the United States related to demographics, socioeconomic factors, and geographic location.

Frail Older Adults with Presymptomatic SARS-CoV-2 Infection: Clinical Course and Prognosis

BACKGROUND/AIMS

The novel coronavirus SARS-CoV-2 has caused a pandemic threatening millions of people worldwide. This study aimed to describe clinical characteristics, outcomes, and risk factors of SARS-CoV-2-positive, asymptomatic, frail older adults.

METHODS

A retrospective cohort study was conducted in 6 designated COVID-19 units, in skilled nursing homes. Subjects were severely frail older adults, positive for SARS-CoV-2, and asymptomatic at the time of their admission in these units. Residents' characteristics and symptoms were obtained via electronic medical records. The primary outcome was a composite of death or hospitalization by day 40. We looked at time to the primary outcome and used Cox regression for a multivariate analysis.

RESULTS

During March-November 2020, 849 residents met inclusion criteria. Median age was 84 years. Most were completely dependent for basic activities of daily living and showed cognitive impairment. Six hundred forty-one (75.5%) residents were discharged after considered cured from COVID-19, 125 (14.7%) were hospitalized, and 82 (9.7%) died in the facilities. In survival analysis, 35% reached the primary outcome of death or hospitalization by day 40. Age (hazard ratio [HR] 1.23; 95% confidence interval [CI] 1.1-1.4), male gender (HR 1.41; 95% CI: 1.1-1.88), and COPD (HR 1.8; 95% CI: 1.23-2.67) were significant risk factors.

CONCLUSIONS

In this large cohort, we report care and prognosis of asymptomatic older adults with major functional or cognitive impairments during the COVID-19 pandemic. Most presymptomatic patients do not develop severe infection, and age stays a predominant risk factor, even in the frailest older adults.

Outcomes of surgery in patients 90 years of age and older: A retrospective cohort study

BACKGROUND

Important trade-offs of risks versus benefits of surgery need to be discussed with older adults, in particular nonagenarians who are candidates for surgery. Data that examine specific outcomes of surgical interventions in this age group are sparse. We aimed to evaluate the clinical presentation and postoperative outcomes of nonagenarians undergoing surgery.

METHODS

A retrospective cohort study of consecutive patients 90 years of age and older who underwent surgery between 2014 and 2018 in general surgical ward of a large-volume academic center. Subgroups were designed according to type of surgery (elective versus emergency surgery) and diagnosis (oncology versus non-oncology). Preoperative assessments included Malnutrition Universal Screening Tool, Norton Scale, Morse Scale, Katz, and Lawton-Brody indices.

RESULTS

A total of 198 nonagenarians underwent surgery, of which 38% were elective and 62% were emergency surgery. Median follow-up was 26 months. More patients in the elective group compared with the emergency group had oncology diagnoses (42.1% and 14.7%, respectively, P < .001), resided preoperatively at home (93.4% and 77.9%, respectively, P = .003), and were functionally independent (71.1% and 41.8%, respectively, P = .0005). Postoperative 30-day mortality frequency was 6.6% in the elective group and 39.3% in the emergency group (P < .001). Two-year survival frequency of non-oncology group was 72.7% in elective surgeries and 40.6% in emergency surgeries (P < .001). Two-year survival frequency of oncology group was 37% in elective surgeries and 27.8% in emergency surgeries (P = .12).

CONCLUSION

Elective surgery in adults aged 90 and above can be safely performed with acceptable 2-year outcomes. Emergency surgery for oncology diagnoses carries dismal outcomes, so palliative approaches should be considered.

Manufacturing a chimpanzee adenovirus-vectored SARS-CoV-2 vaccine to meet global needs

Manufacturing has been the key factor limiting rollout of vaccination during the COVID-19 pandemic, requiring rapid development and large-scale implementation of novel manufacturing technologies. ChAdOx1 nCoV-19 (AZD1222, Vaxzevria) is an efficacious vaccine against SARS-CoV-2, based upon an adenovirus vector. We describe the development of a process for the production of this vaccine and others based upon the same platform, including novel features to facilitate very large-scale production. We discuss the process economics and the "distributed manufacturing" approach we have taken to provide the vaccine at globally-relevant scale and with international security of supply. Together, these approaches have enabled the largest viral vector manufacturing campaign to date, providing a substantial proportion of global COVID-19 vaccine supply at low cost.

A 15 Year Review (2006-2020) of Patient-Reported Outcome (PRO) in United States Oncology Product Labeling and Trends in Sponsor Size and Oncology Experience

Objectives

Despite wide use of PRO tools in clinical development, resulting data is rarely incorporated into the US label. This study reviewed oncology product labels approved by the Food and Drug Administration (FDA) between 2006 and 2020 to determine if the number of PRO included in labeling has meaningfully changed. Sponsors were assessed to identify demographic trends in achieving PRO label success.

Methods

FDA-approved drugs were searched utilizing the Drugs@FDA database by month from January 2015 to December 2020 for novel drug and biologic approvals. Products approved between 2006-2014 were identified utilizing the Gnansakthy et al., 2012 and 2016 publications. Labels were reviewed for inclusion of PRO data in the label and product summary basis of approval (SBA). Sponsor size and experience were measured for each year of product approval.

Results

155 oncology products received initial approval between 2006-2020, of which only 7 contained PRO data in the label. More than half (53.5%) of products had PRO data described in the SBA. Over time, PRO information has increasingly been included in the product marketing application. Sponsors utilizing PRO data tend to be experienced in oncology development and larger in size.

Conclusions

There has been a small increase in inclusion of PRO data in oncology product labeling over the past 15 years. Utilization and analysis of appropriate PRO tools and data remains a challenge to sponsors. Further collaboration with FDA is needed for the development of disease specific PRO tools that provide meaningful data to the targeted patient population.

From research to bedside: Incorporation of a CGA-based frailty index among multiple comanagement services

The comprehensive geriatric assessment (CGA) is the core tool used by geriatricians across diverse clinical settings to identify vulnerabilities and estimate physiologic reserve in older adults. In this paper, we demonstrate the iterative process at our institution to identify and develop a feasible, acceptable, and sustainable bedside CGA-based frailty index tool (FI-CGA) that not only quantifies and grades frailty but also provides a uniform way to efficiently communicate complex geriatric concepts such as reserve and vulnerability with other teams. We describe our incorporation of the FI-CGA into the electronic health record (EHR) and dissemination among clinical services. We demonstrate that an increasing number of patients have documented FI-CGA in their initial assessment from 2018 to 2020, while additional comanagement services were established (Figure 2). The acceptability and sustainability of the FI-CGA, and its routine use by geriatricians in our division, were demonstrated by a survey where the majority of clinicians report using the FI-CGA when assessing a new patient and that the FI-CGA informs their clinical management. Finally, we demonstrate how we refined and updated the FI-CGA, we provide examples of applications of the FI-CGA across the institution and describe areas of ongoing process improvement and challenges for the use of this tailored yet standardized tool across diverse inpatient and outpatient services. The process outlined can be used by other geriatric departments to introduce and incorporate an FI-CGA.

Team Approach: Preoperative Management of Metabolic Conditions in Total Joint Replacement

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Total joint arthroplasties (TJAs) of the knee and hip have been considered 2 of the most successful surgical procedures performed to date.

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Frailty is defined as increased vulnerability to adverse outcomes with physiologic stress.

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Preoperative optimization of frailty and metabolic bone conditions, including osteoporosis, vitamin D deficiency, and diabetes, through a multidisciplinary approach can help improve outcomes and minimize costs after TJA.

Outcomes of trimodality CROSS regimen in older adults with locally advanced esophageal cancer

BACKGROUND

Chemoradiotherapy for Esophageal cancer followed by Surgery (CROSS regimen) is standard of care for locally-advanced esophageal cancer. We evaluated CROSS completion rates, toxicity, and postoperative outcomes between older and younger adults receiving trimodality therapy.

METHODS

Retrospective analysis of patients with locally-advanced esophageal cancer who underwent CROSS regimen from May 2016 to January 2020 at a single academic center. Outcomes of those aged ≥70-years-old and <70 years-old were analyzed.

RESULTS

Of 201 patients, 136 were <70 and 65 were ≥70 years. Older adults were more likely to be male (91% vs. 79%; p = 0.045), have higher ECOG scores (median 1 vs. 0; p = 0.003), Charlson-comorbidity index (median 6 vs. 4; p < 0.001), and undergo open procedures (20% vs. 8% p = 0.008). Most completed CROSS regimen (78% vs. 84% respectively) with similar rates of treatment discontinuation and dose reduction (all p > 0.05). Time to surgery following neoadjuvant therapy was similar between age groups, except in those ≥80-years-old as compared to <70-years-old (p < 0.05). Overall toxicity rates were similar (68% vs. 71% respectively; p = 0.676). Only rates of delirium (19% vs. 5%) and urinary retention (9% vs. 0%) were higher in older adults (both p < 0.05). Length of stay, discharge disposition, mortality, and overall survival were similar. Age was not an independent risk factor for complication, neoadjuvant toxicity or completion, surgery timing, nor worse overall or recurrence-free survival (p > 0.05).

CONCLUSION

Trimodality CROSS regimen for esophageal cancer in older adults is feasible, with similar completion rates and postoperative outcomes as compared to their younger counterparts.

An experimental approach to analyze aerosol and splatter formations due to a dental procedure

Throughout 2020 and beyond, the entire world has observed a continuous increase in the infectious spread of the novel coronavirus (SARS-CoV-2) otherwise known as COVID-19. The high transmission of this airborne virus has raised countless concerns regarding safety measures employed in the working conditions for medical professionals. Specifically, those who perform treatment procedures on patients which intrinsically create mists of fine airborne droplets, i.e., perfect vectors for this and other viruses to spread. The present study focuses on understanding the splatter produced due to a common dentistry technique to remove plaque buildup on teeth. This technique uses a high-speed dentistry instrument, e.g., a Cavitron ultrasonic scaler, to scrape along the surface of a patient's teeth. This detailed understanding of the velocity and the trajectory of the droplets generated by the splatter will aid in the development of hygiene mechanisms to guarantee the safety of those performing these procedures and people in clinics or hospitals. Optical flow tracking velocimetry (OFTV) method was employed to obtain droplet velocity and trajectory in a two-dimensional plane. Multiple data collection planes were taken in different orientations around a model of adult mandibular teeth. This technique provided pseudo-three-dimensional velocity information for the droplets within the splatter developed from this high-speed dental instrument. These results indicated that within the three-dimensional splatter produced there were high velocities (1-2 m/s) observed directly below the intersection point between the front teeth and the scaler. The splatter formed a cone-shape structure that propagated 10-15 mm away from the location of the scaler tip. From the droplet trajectories, it was observed that high velocity isolated droplets propagate away from the bulk of the splatter. It is these droplets which are concerning for health safety to those performing the medical procedures. Using a shadowgraphy technique, we further characterize the individual droplets' size and their individual velocity. We then compare these results to previously published distributions. The obtained data can be used as a first step to further examine flow and transport of droplets in clinics/dental offices.

Clinical efficacy and safety of high dose trivalent influenza vaccine in adults and immunosuppressed populations - A systematic review and meta-analysis

OBJECTIVES

Influenza is associated with significant morbidity and mortality, especially in older and immunocompromised patients. Few data are available on the clinical benefit of high dose trivalent influenza vaccine (TIV). We aimed to assess the clinical efficacy and safety of high dose TIV.

METHODS

We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs), evaluating high dose versus standard dose TIV for prevention of seasonal influenza in adult population. Primary outcome was laboratory-confirmed influenza. Subgroups analyses included older adults and immunocompromised patients.

RESULTS

We included 16 trials, 47,857 patients; 10 included older adults and three immunocompromised patients. Laboratory confirmed influenza was significantly reduced with high dose TIV (relative risk 0.76, 95% confidence interval 0.64 to 0.9). This outcome stemmed mainly from one trial in older adults. Specifically, A(H3N2) laboratory confirmed influenza, but not A(H1N1) or B lineages, was reduced. No difference in mortality or hospitalizations was demonstrated. Immunological response was significantly higher with high dose vaccine. Serious adverse events were significantly less common in the high dose group.

CONCLUSIONS

High dose TIV lowers the rates of laboratory confirmed influenza, mainly A (H3N2), in older adults vs. standard dose. Further studies should address immunocompromised patients and report clinical outcomes.

Safety of emergency, elective and day case operating during the winter period at East Suffolk and North Essex NHS Foundation Trust: lessons from the outcomes of 4,254 surgical patients from the first COVID-19 wave

BACKGROUND

There is limited evidence on perioperative outcomes of surgical patients during the COVID-19 pandemic to inform continued operating into the winter period.

METHODS

We retrospectively analysed the rate of 30-day COVID-19 transmission and mortality of all surgical patients in the three hospitals in our trust in the East of England during the first lockdown in March 2020. All patients who underwent a swab were swabbed on or 24 hours prior to admission.

RESULTS

There were 4,254 patients and an overall 30-day mortality of 0.99%. The excess surgical mortality in our region was 0.29%. There were 39 patients who were COVID-19 positive within 30 days of admission, 12 of whom died. All 12 were emergency admissions with a length of stay longer than 24 hours. There were three deaths among those who underwent day case surgery, one of whom was COVID-19 negative, and the other two were not swabbed but not suspected to have COVID-19. There were two COVID-19 positive elective cases and none in day case elective or emergency surgery. There were no COVID-19 positive deaths in elective or day case surgery.

CONCLUSIONS

There was a low rate of COVID-19 transmission and mortality in elective and day case operations. Our data have allowed us to guide patients in the consent process and provided the evidence base to restart elective and day case operating with precautions and regular review. A number of regions will be similarly affected and should perform a review of their data for the winter period and beyond.

82 A Case of Recurrent Calcifying Aponeurotic Fibroma of the Hand: Managing a Rare Hand Tumour in an Evolving Healthcare Landscape

Introduction

Calcifying Aponeurotic Fibroma (CAF) is a rare benign tumour originating from the aponeuroses of tendons and their bony insertions. Our case illustrates the technical challenges and considerations of removing a large, recurrent CAF of the hand.

Case Report

A 15-year-old student presented to his GP with a one-year history of a progressively enlarging painless swelling on the dorsum of the middle phalanx of the left middle finger. Plain radiographs identified a calcified soft tissue swelling with no bony involvement. The lesion was excised by the local paediatric orthopaedic service and recurred rapidly. Histology confirmed the diagnosis. He was referred to our specialist hand surgery service and the lesion was excised with the overlying skin (which demonstrated histological but not clinical disease). At six months, there was no clinical evidence of recurrence.

Conclusions

CAF may present atypically, and a high index of suspicion is warranted with calcified soft tissue hand lesions. Excision with conservative margins, and we newly suggest, the overlying skin, is recommended to preserve hand function but minimise recurrence (very common). Hand surgery provision in the UK is changing with adoption of the hub and spoke model and hand tumours may be more appropriately managed at specialist centres.

COVID-19 pandemic response varies by clinical trial sponsor type

INTRODUCTION

The COVID-19 pandemic has impacted millions of lives globally. To learn more about this disease and find potential diagnostic, therapeutic, and preventative products, the healthcare community has initiated a staggering number of clinical trials.

METHODS

ClinicalTrials.gov was reviewed to determine if trial sponsor type had a relationship to time to COVID-19 response, which was defined as the date from disease discovery in Wuhan, China to ClinicalTrials.gov study "First Posted" date.

RESULTS

A total of 673 United States (US) sponsored, interventional study listings were retrieved, of which 293 (43.5%) were Industry-sponsored, 349 (51.9%) were Academic sponsored, and 31 (4.6%) were Other sponsor types. Of the Academic studies, 181 (51.9%) were Clinical and Translational Science Award (CTSA) hubs. The average response time for all sponsor types was 189 days, with Academic sponsors having the shortest average response time of 172.6 days (P < 0.001). CTSA hubs had a significantly (P < 0.001) shorter average response time (168.1 days) compared to all other sponsor types (197.4 days). However, while shorter in duration by 9.4 days, response time was not significantly different from non-CTSA sponsors (177.5 days; P = 0.238). Additionally, ANOVA indicated significant relationships (P < 0.001) between funding type, study phase, number of sites, and enrollment size on response time.

CONCLUSIONS

Studies posted with the shortest response time were Academic-sponsored trials and included smaller sized investigations of repurposed approved or investigational drugs for the treatment of COVID-19 symptoms. A small second wave of study postings occurred approximately 4 months later, and included small, unique therapies targeting prevention or treatment of COVID-19.

Characteristics and Outcomes of Hip Fracture Patients Hospitalized in an Orthogeriatric Unit Versus an Orthopedic Department: A Retrospective Cohort Study

Introduction:

Hip fractures are a significant health risk in older adults and a major cause of morbidity, functional decline and mortality. Our aim was to compare clinical outcomes of older patients hospitalized in an ortho-geriatric (OG) unit to those hospitalized in an orthopedic department (OD) for surgical treatment of a hip fracture.

Methods:

A retrospective cohort study of hip fractured patients hospitalized between 2015-2016 in a single tertiary university-affiliated medical center. Included were patients aged 65 and older who had undergone hip fracture surgery and were admitted to either a geriatric or orthopedic ward.

Results:

441 patients met the inclusion criteria (195 in the OG unit, 246 in the OD); 257 were transferred to an affiliated geriatric center hospital (107 from the OG unit and 127 from the OD) for rehabilitation. Patients in the OG unit were older, more cognitively and functionally impaired and with more comorbidities. The 1-year mortality rate was significantly lower in the OD group (OR 0.32, CI 95% 0.19-0.53, p < 0.001), however, after propensity matching, the 30-day and 1 year mortality rates were similar in both groups. No difference was found in the rehabilitation length of stay between the groups. The functional independence measure improvement was similar in both groups, with a non-significant trend toward better functional improvement among OG unit patients.

Conclusions:

Despite the higher complexity of patients, worse baseline functional capacity in the OG unit, improvement after rehabilitation was similar in both groups. These results demonstrate the advantages of the OG unit in treating and stabilizing frail older adults, thus maximizing their chances for a successful recovery after hip fractures.

Level of Evidence:

Level IV

Some Nursing Screening Tools Can Be Used to Assess High-Risk Older Adults Who Undergo Colorectal Surgery for Cancer

Aim

Life expectancy and incidence of cancer among older adults are increasing. The aim of this study was to assess whether routinely used nursing screening tools can predict surgical outcomes in older adults with colorectal cancer.

Methods

Data of patients who underwent elective colorectal cancer surgery at Rabin Medical Center during the years 2014-2016 were collected retrospectively. Patients were divided into study group (age 80-89 y), and control group (age 60-69 y) for comparing surgical outcomes and six-month mortality. In the study group, screening tool scores were evaluated as potential predictors of surgical outcomes. These included Malnutrition Universal Screening Tool (MUST), Admission Norton Scale Scores (ANSS), Morse Fall Scale (MFS), and Charlson Co-morbidity Index (CCI).

Results

The study group consisted of 77 patients, and the control group consisted of 129 patients. Postoperative mortality and morbidity were similar in both groups. Nursing screening tools did not predict immediate postoperative outcomes in the study group. MUST and CCI were predictors for six-month mortality. CCI score was 9.43±2.44 in those who died within six months from surgery compared to 7.07 ±1.61 in those who were alive after six months (p<0.05). Post-operative complications were not associated with increased 30-day mortality. Advanced grade complications were associated with an increased six-month mortality (RR=1.37, 95% CI 0.95-1.98, p=0.013).

Conclusion

Different screening tools for high-risk older adults who are candidates for surgery have been developed, with the caveat of necessitating skilled physicians and resources such as time. Routinely used nursing screening tools may be helpful in better patient selection and informed decision making. These tools, specifically MUST and CCI who were found to predict six-month survival, can be used to additionally identify high-risk patients by the nursing staff and promote further evaluation. This can be a valuable tool in multidisciplinary and patient-centered care.

[ANEMIA IN PATIENTS AFTER HIP FRACTURE REPAIR SURGERY]

Hip fractures (HF) are common among the elderly. The prevalence increases with age and occurs more frequently among females. Up to 30% mortality rates have been observed during the first year following HF, with or without surgery. Additional implications may include functional and cognitive decline and significant morbidity. Many factors are associated with morbidity and mortality after HF repair surgery, including anemia. Anemia is present in approximately 50% of these patients upon admission to the hospital and its incidence increases further following surgery. The mean reduction in the hemoglobin level after surgery is estimated at 0.7-2.5 g/dL. There are several causes of anemia, some are patient dependent and some are related to the type of fracture and surgery. Anemia has a significant effect on the elderly patient in general, and on the patient's condition post-HF in particular. Anemia on admission is associated with short and long-term mortality, in addition to the length of stay, amount of blood transfusions, repeated hospitalizations, post-operative complications, poor functioning and a reduced quality of life. The most common treatment for anemic patients before and after HF repair surgery is the administration of blood transfusions. It has been common practice to administer blood transfusions when hemoglobin reaches a level of 8g/dL, however the effectiveness of this approach in older patients is not conclusive. Regarding other modalities, i.e., iron, erythropoietin and tranexamic acid, there are currently no clear guidelines in the literature and their effectiveness has not been fully established. Further research is needed to address these issues.

[EVALUATION OF THE ELDERLY PATIENT WITH CANCER]

In recent years, there has been a significant increase in the number of adult patients with malignant diseases. These patients are a major therapeutic challenge due to a high incidence of comorbidities, lower functional status and often a diagnosis of the disease at a relatively advanced stage. The preferred approach to the treatment of cancer is a multidisciplinary approach. In the last decade, we have witnessed the integration of geriatricians as part of the multidisciplinary team in order to better assess patients' ability to withstand oncological or surgical treatment and, if necessary, to prepare them better for these treatments. In this article we review the use of various geriatric tools, such as generalized geriatric assessment, fragility and sarcopenia, and their effect on the decision-making process of the treating physicians and on the outcomes of the various treatments, including the outcomes of the operations. We show that comprehensive geriatric assessment is the basis for the evaluation of the adult oncology patients, and proper preparation for treatment in order to improve the outcomes of the treatment and reduce its complications. The rapid growth rate of the elderly population in Israel, together with the continuous development of oncology and cancer treatments, indicate the need to allocate resources and efforts to treat this unique population. We recommend an integration of geriatricians in the multidisciplinary team that treats this population.

Low-coverage genomic data resolve the population divergence and gene flow history of an Australian rain forest fig wasp

Population divergence and gene flow are key processes in evolution and ecology. Model-based analysis of genome-wide data sets allows discrimination between alternative scenarios for these processes even in nonmodel taxa. We used two complementary approaches (one based on the blockwise site frequency spectrum [bSFS], the second on the pairwise sequentially Markovian coalescent [PSMC]) to infer the divergence history of a fig wasp, Pleistodontes nigriventris. Pleistodontes nigriventris and its fig tree mutualist Ficus watkinsiana are restricted to rain forest patches along the eastern coast of Australia and are separated into The Northern population is to the north of the Southern populations by two dry forest corridors (the Burdekin and St. Lawrence Gaps). We generated whole genome sequence data for two haploid males per population and used the bSFS approach to infer the timing of divergence between northern and southern populations of P. nigriventris, and to discriminate between alternative isolation with migration (IM) and instantaneous admixture (ADM) models of postdivergence gene flow. Pleistodontes nigriventris has low genetic diversity (π = 0.0008), to our knowledge one of the lowest estimates reported for a sexually reproducing arthropod. We find strongest support for an ADM model in which the two populations diverged ca. 196 kya in the late Pleistocene, with almost 25% of northern lineages introduced from the south during an admixture event ca. 57 kya. This divergence history is highly concordant with individual population demographies inferred from each pair of haploid males using PSMC. Our analysis illustrates the inferences possible with genome-level data for small population samples of tiny, nonmodel organisms and adds to a growing body of knowledge on the population structure of Australian rain forest taxa.

Reflecting on success in trauma research: experiences from the SGCNS and SIR studies

The inclusion of British Service Personnel (SP) lacking capacity into research studies from the point of injury through to medium-term rehabilitation had not previously been undertaken until work to support operations in Afghanistan (2001-2014). The Surgeon General's Casualty Nutrition Study and the Steroids and Immunity from Injury through to Rehabilitation Study sought to address the nutrition, endocrine and immune responses in a military patient cohort. A fundamental part of research is to feedback to patients, their relatives and ward staff on data collection and outcomes, and how future research may be improved to better support both injured SP and trauma patients in the UK. This paper will provide an experiential view on the delivery, operations and infrastructure requirements that should be considered when developing military research at a role-3 facility, before, during and after a study.

1044 Adequate Sleep is Associated with Improved Diabetes Knowledge and HbA1c

Introduction

Although 55 % of the people with T2DM have low quality of sleep that may affect their physical and emotional wellbeing, and present challenges to the management of their condition, many Diabetes Self-Management Education Programs (DSME) that aim to improve knowledge of T2DM, don’t include information on healthy sleep. This study will examine the relationship between adequate sleep on improved T2DM knowledge and diabetes maintenance (HbA1c).

Methods

The Sleep Integrated with Diabetes Education (SLIDE) Trial tests whether including four brief healthy sleep hygiene sessions within an existing traditional Diabetes Self-Management Education Program improves healthy sleep, motivation for change, and biopsychosocial outcomes for 50 patients with DM who are under and uninsured. This study uses descriptive and ANOVAs to examine the relationship between adequate sleep and change in diabetes knowledge (Diabetes Knowledge Test) using self-report. EMR was used to link HbA1c and other biological measures.

Results

Fifty patients with T2DM (mean HbA1c = 8.79 ± 2.42) participating in a DSME Program at a southern urban community nonprofit hospital were randomly assigned to DSME classes or DSME classes + four 15-minute presentations (video and powerpoint) highlighting healthy sleep hygiene practices. The majority of these patients were obese (mean BMI=38.56±8.20). Only 11% reported normal sleep, with 41% reporting short sleep (&lt;6 hours) and 7% long sleep (&gt;8 hours). Patients who reported adequate sleep were more likely to improve diabetes knowledge (81% score vs. 68% score, p&lt;.001) and HbA1c (1.1 vs. -.03, p&lt;.001).

Conclusion

There is a relationship between adequate sleep and improving diabetes knowledge and maintenance for patients with T2DM. Future research could further explore this relationship and determine barriers and facilitators to adequate sleep and what role adequate sleep plays in improving T2DM knowledge and maintenance.

Support

Bon Sequor Foundation

Building the Evidence Base to Inform Planned Intervention Adaptations by Practitioners Serving Health Disparity Populations

Many evidence-based interventions (EBIs) have been developed to prevent or treat major health conditions. However, many EBIs have exhibited limited adoption, reach, and sustainability when implemented in diverse community settings. This limitation is especially pronounced in low-resource settings that serve health disparity populations. Often, practitioners identify problems with existing EBIs originally developed and tested with populations different from their target population and introduce needed adaptations to make the intervention more suitable. Although some EBIs have been extensively adapted for diverse populations and evaluated, most local adaptations to improve fit for health disparity populations are not well documented or evaluated. As a result, empirical evidence is often lacking regarding the potential effectiveness of specific adaptations practitioners may be considering. We advocate an expansion in the emphasis of adaptation research from researcher-led interventions to research that informs practitioner-led adaptations. By presenting a research vision and strategies needed to build this area of science, we aim to inform research that facilitates successful adaptation and equitable implementation and delivery of EBIs that reduce health disparities.

Petrifilm™ Rapid S. aureus Count Plate Method for Rapid Enumeration of Staphylococcus aureus in Selected Foods: Collaborative Study

A rehydratable dry-film plating method for Staphylococcus aureusin foods, the 3M™ Petrifilm™ Rapid S. aureus Count Plate method, was compared with AOAC® Official MethodSM 975.55 (Staphylococcus aureus in Foods). Nine foods—instant nonfat dried milk, dry seasoned vegetable coating, frozen hash browns, frozen cooked chicken patty, frozen ground raw pork, shredded cheddar cheese, fresh green beans, pasta filled with beef and cheese, and egg custard—were analyzed for S. aureus by 13 collaborating laboratories. For each food tested, the collaborators received 8 blind test samples consisting of a control sample and 3 levels of inoculated test sample, each in duplicate. The mean log counts for the methods were comparable for pasta filled with beef and cheese; frozen hash browns; cooked chicken patty; egg custard; frozen ground raw pork; and instant nonfat dried milk. The repeatability and reproducibility variances of the Petrifilm Rapid S. aureus Count Plate method were similar to those of the standard method.

2418Th17 signature, autoimmunity and differentially expressed genes in cardiomyopathy and heart failure

Background

Cardiomyopathy may occur due to viral infections or drug induced heart damage. Cardiac myosin released from damaged heart has been shown to be a damage associated molecular pattern which binds to TLR2 or TLR8 and can act as an adjuvant to induce a strong autoimmune response against the heart. The result is autoimmunity against the heart which can lead to apoptosis, fibrosis and heart failure.

Purpose

Immune biomarkers of the early stages of heart failure are needed to identify individuals who develop progressive heart failure, do not recover their ejection fraction and may be candidates for immunotherapies.

Methods

Forty-one patients with myocarditis and heart failure <6 months after onset were followed for 12 months and compared to age matched controls. Peripheral blood mononuclear cells were analyzed by FACS analysis and serum analyzed by ELISA for autoantibodies and cytokines. Statistical analysis was determined by Mann Whitney test. Peripheral blood of 10 patients with dilated cardiomyopathy (DCM) vs 19 healthy controls were analyzed for gene expression by RNA sequencing and pathway analysis using Reactome.

Results

Autoantibodies against human cardiac myosin and the beta-adrenergic receptor were significantly elevated in our cohort and functionally acted on cardiomyocytes to activate protein kinase A. Concomitantly, a Th17+ immunophenotype was significantly elevated in blood as well as in cardiac biopsies. CD4+IL17+ T cells (p=0.0008) and Th17-promoting cytokines TGF beta (p<0.0001), IL-6 (p<0.0001), IL-23 (p=0.0001), GMCSF (p=0.0336) and GMCSF-secreting CD4+ T cells (p=0.0006) were significantly elevated in blood. A Th17 immunophenotype was significantly associated with heart failure primarily in males (p=0.029). Persistent heart failure (NYHA class III and IV) and non-recovery of left ventricular function were associated with significantly higher percentages of IL17A-producing T cells at baseline, 6 and 12 months after onset, and IL-17A (p=0.019) and elevated Th17-promoting cytokines IL-6 (p=0.0001) and TGF-beta (p=0.0076). Decreased T regulatory immunosuppressive cells were significantly (p=0.0006) decreased and correlated with elevated Th17 cytokines in heart failure. Overrepresentation analysis of differentially expressed genes (adj p<0.05) in blood of patients with DCM >1year were identified using Reactome which revealed significant (FDR = 1.52E-13) enrichment of neutrophil degranulation (48 genes).

Conclusion

Our study illustrates a strong Th17 signature in more severe heart failure early in disease with elevated anti-cardiac myosin autoantibodies in non-recovery of left ventricular function. We observed a strong correlation with Th17-related neutrophil degranulation pathways in later disease, which may be biomarkers of fibrosis progression and disease severity in patients with heart failure. Cardiomyopathy with a Th17 signature might be treated with preventive immunomodulatory therapies such as anti-IL17A.

Acknowledgement/Funding

National Heart Lung and Blood Institute, Bethesda, MD, USA