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Introduction Frailty is characterized by multisystem function decline related to aging and can be measured using frailty Index (FI). FI is constructed based on the proportion of deficits present in an individual out of the total number of health variables considered. FI in various populations has been shown to predict adverse health outcomes. We aimed to determine the impact of hormone excess on frailty in a prospective cohort of patients with adrenal adenomas. Methods We conducted a multicenter prospective observational study of adult patients with adrenal adenomas and referent subjects without adrenal disorders (Jan 2019-Dec 2021). Adrenal adenomas comprised non-functioning adrenal adenomas (NFA), adenomas with mild autonomous cortisol secretion (MACS), defined as dexamethasone suppression test (DST)>1.8 mcg/dL, Cushing syndrome (CS), and primary aldosteronism (PA). FI was calculated as a sum of 47 variables (20 comorbidities, 13 symptoms, 14 activities of daily living) divided by 47.1 Frailty was defined as FI>0.25. In a subset of patients (n=176), functional measurements (handgrip strength, timed up and go test, gait speed) were performed and compared to FI. Results Of 233 patients (72.1% women), 71 were diagnosed with NFA (median age 64.5 years), 108 with MACS (median age 60.7 years), 11 with CS (median age 58.0 years), 46 with PA (median age 52.4 years), and 33 were referent subjects (median age 51.3 years). When compared to referent subjects, age- and sex-adjusted frailty prevalence was highest in CS (OR 29, 95%CI 4.3-202), followed by MACS (OR 16, 95%CI 3.5-73.7), and PA (OR 11.7, 95%CI 2.4-56), but not in patients with NFA (OR 5.1, 95%CI 0.99-25.8). Compared to patients with NFA, age- and sex-adjusted frailty prevalence was higher in CS (OR 5.8, 95%CI 1.4-24.4) and in MACS (OR 3.2, 95%CI 1.5-6.7), but not in PA (OR 2.3, 95%CI 0.9-6.1) group. Subgroup-analysis based on DST demonstrated a similar increase in age- and sex-adjusted frailty prevalence in patients with DST>5 mcg/dL (OR 3.1, 95%CI 1.2-8.2) and DST 1.9-5 mcg/dL (OR 3.3, 95%CI 1.5-7.4) when compared to patients with DST Conclusions Patients with functional adrenal adenomas are more likely to be frail. In patients with MACS, the prevalence of frailty was not associated with the degree of DST abnormality. FI correlated with currently validated but more cumbersome functional measurements and is a valuable tool that could be easily used in clinical practice and help individualize management decisions in patients with adrenal adenomas. 1 Singh S et al. Frailty in Patients With Mild Autonomous Cortisol Secretion is Higher Than in Patients with Nonfunctioning Adrenal Tumors. JCEM 2020 Presentation: Saturday, June 11, 2022 1:30 p.m. - 1:35 p.m., Sunday, June 12, 2022 12:30 p.m. - 2:30 p.m.

Introduction Limited data suggest low bone density in patients with adrenal adenomas. However, most studies are retrospective, single-center, and none were conducted in the United States. We aimed to determine the impact of cortisol and aldosterone excess on bone density. Methods We conducted a preliminary analysis of data from our multicenter, prospective observational study of adult patients with adrenocortical hormone excess and referent subjects without adrenal disorders (January 2019 - March 2022). Patients were diagnosed with non-functioning adenomas (NFA), adenomas with mild autonomous cortisol secretion, MACS (defined as cortisol following an overnight 1-mg dexamethasone suppression test (DST)>1.8 mcg/dL), adrenal or pituitary Cushing syndrome (CS), primary aldosteronism (PA), and concomitant PA-MACS. Referent subjects were patients undergoing cross-sectional imaging for reasons other than adrenal disease. All participants were interviewed about their bone health, and had bone density measurements at the spine, hips, and/or radius. Bone disease was defined as osteopenia (T-score -1.1 to -2.4), or osteoporosis (T-score < -2.5). Results A total of 417 participants included 156 referent subjects (88, 56% women, median age 65, range 2-95 years) and 261 patients (190, 73% women, median age 59, range 21-88 years). Patients were diagnosed with NFA (51, 19%), PA (46, 17%), MACS (122, 47%), PA-MACS (12, 5%), and CS (30,12%). When compared to referent subjects, sex- and age-adjusted analysis demonstrated an increased prevalence of bone disease only in patients with CS (OR 4.8, 95%CI 1.7-13), but not in other adrenal disorders. After excluding patients with CS, those with post-DST cortisol >5 mcg/dL demonstrated a higher prevalence of bone disease when compared to patients with post-DST cortisol between 1.8-5 mcg/dL (OR 2.8, 95%CI 1.2-6.5) and those with post-DST cortisol Conclusions The prevalence of osteopenia and osteoporosis increases proportional to the increase in post-DST cortisol concentrations. Patients with CS, and those with MACS and post-DST cortisol > 5mcg/dL have the highest prevalence of bone disease. Presentation: Saturday, June 11, 2022 1:00 p.m. - 3:00 p.m.

Objective. Several smaller studies on adrenal incidentalomas (AI) suggested an association between autonomous cortisol secretion (ACS) and mortality (Di Dalmazi Lancet Diabetes Endocrinol 2014, Debono J Clin Endocrinol Metab 2014, Patrova Endocrine 2017). However, a recent meta-analysis (9 studies, 1356 patients) could not confirm these findings (Elhassan Ann Intern Med 2019). Aim. To investigate the effects of ACS on mortality, prevalence of cardiovascular (CV) risk factors, and (CV) morbidity, in a representative cohort of AI. Design. Retrospective observational study conducted at 27 ENS@T centers from 15 countries. Methods. Inclusion criteria: AI diagnosed 1996-2015, 1 mg dexamethasone suppression test, follow-up (FU) of ≥36 months, known survival status. Exclusion criteria: clinically relevant adrenal hormone excess (i.e. Cushing’s syndrome, pheochromocytoma, primary hyperaldosteronism), known malignancy. Patient stratification: serum cortisol after dexamethasone (>5 µg/dl, ACS; 1.9-5 µg/dl, possible ACS (PACS); ≤1.8 µg/dl, non-functioning adenoma (NFA)). Definition of CV events (CVE): hospitalization due to myocardial infarction and related interventions (PTCA, surgical bypass), stroke, deep vein thrombosis, pulmonary embolism. Results. 3640 patients (57% NFA, 36% PACS, 7% ACS) were considered eligible: 64% females; median age 61 years (range 18-91); median FU 84 months (36-277) (distribution between subgroups n.s.). 352 patients died during FU. Age- and sex adjusted overall survival was significantly reduced in patients with PACS (HR 1.55; 95%CI 1.24-1.94) and ACS (1.84; 1.29-2.61). Prevalence of CV risk factors were significantly higher in PACS and ACS than in NFA (hypertension: 72, 73, 57%, p

BACKGROUND: Adrenal venous sampling (AVS) is strongly recommended for a subtype diagnosis of primary aldosteronism (PA) if adrenalectomy (ADX) is desired by the patient. Given various issues related to AVS such as technical demand, invasive nature, expensive cost and radiation exposure, AVS is expected to lead efficiently to the subtype diagnosis and ADX. Aim: Primary objective was to assess the performance of AVS to determine treatment of PA by investigating the ratio of unilateral disease and rate of ADX following AVS in patients with unilateral disease. Methods: Sixteen major referral centers in ENS@T (n=10) and Japan (n=6) participated in the study. Study period was from 2006 to 2018. Data on total number of PA patients, AVS (total number and number of successful procedures), number of patients with unilateral diseases, and number of patients that underwent ADX were collected by a questionnaire-based survey. In addition, reasons for not proceeding to ADX in patients with a unilateral diagnosis were investigated. The diagnosis of PA was based on the positive case detection and at least one positive result in confirmatory testing. Results: Total number of confirmed PA patients and conducted AVS showed a dramatic increase during the past decade (PA: 1061 pts/ 2006–2011 to 3718 pts/ 2012–2018; AVS: 720/ 2006–2011 to 2448/ 2012–2018). Success rate of AVS was improved from 79.0% (2006–2011) to 92.5% (2012–2018). Both rate of unilateral PA and ADX of successful procedures decreased from 42.7% (2006–2011) to 37.3% (2012–2018) and from 40.8% (2006–2011) to 34.9% (2012–2018), respectively. Of the patients with successful AVS, bilateral disease was diagnosed in 63.5% (1812/2854 pts). Of the unilateral PA patients, 11.9% (125/ 1054 pts) were not subjected to ADX. The rate of the patients not subjected to ADX was significantly higher in Japan than in ENS@T centers both in patients with successful AVS (75.8% vs. 53.4%) and with unilateral disease (19.9% vs. 8.6%). Clinical decision against ADX in unilateral disease was made by the physicians in 33.3%, the patients in 33.3%, and both in 33.3%. Medical factors for Dr.’s decision against ADX in unilateral disease included good blood pressure control, normokalemia, comorbidities (e.g. DM, CKD), non-lateralized CT findings (e.g. no tumor, contralateral tumor), and discordant results among different criteria of AVS. Conclusions: High prevalence of bilateral disease and change of treatment policy after implementation affected the efficiency of AVS as an essential diagnostic procedure prior to ADX. Development of non-invasive procedures to exclude bilateral PA and more strict indication of AVS are warranted.

Background: The ESE-ENSAT guidelines on the management of adrenocortical carcinoma (ACC) suggest adjuvant mitotane for patients at high risk of recurrence following radical surgery. This indication has a limited evidence base, lacking results from randomized controlled trials. No suggestion for or against adjuvant mitotane in low-risk patients was given, since studies did not stratify patients for prognosis. The randomized controlled study ADIUVO compared the efficacy of adjuvant mitotane treatment vs. observation in prolonging recurrence-free survival (RFS) in ACC patients at low-intermediate risk of recurrence. Methods: The main inclusion criteria were: stage I-III ACC, R0 surgery, and Ki-67 ≤10%. Patients were randomly assigned 1:1 to adjuvant mitotane (MIT) or observation (OBS). The primary endpoint of the study was RFS. Patients who refused randomization were offered inclusion in the ADIUVO OBSERVATIONAL study. In this prospective, observational study, patients were managed as in the ADIUVO study. A total of 91 patients were enrolled in ADIUVO, 45 in the MIT and 46 in the OBS arm. Baseline characteristics of patients were perfectly matched between the 2 arms: median age, 51 vs. 50.5 years; female, 73% vs. 67%; stage I, 20% vs. 26%; stage II, 67% vs. 63%, stage III, 13% vs. 11%; ACC secretion 44% vs. 36%; Weiss 5 vs. 5; respectively. In ADIUVO OBSERVATIONAL, 42 patients were treated with mitotane and 53 were untreated. Baseline characteristics of patients were matched between the 2 groups and with MIT and OBS groups in ADIUVO. Thus, the ADIUVO OBSERVATIONAL cohorts could be analyzed in parallel to those of ADIUVO. Results: In the ADIUVO study, recurrences were 8 in the MIT and 11 in the OBS arm, while deaths were 2 and 5, respectively. RFS and overall survival (OS) did not significantly differ between the 2 arms. Tumor size was a predictor of RFS in multivariable analysis. In the OBS arm, the HR for recurrence was 1.321 (95%CI, 0.55–3.32, p=0.54) and HR for death 2.171 (95%CI, 0.52–12.12, p=0.29). The survival analysis in the ADIUVO OBSERVATIONAL study confirmed the findings of ADIUVO. Given the outcome of both studies, the NNT is 55. Conclusions: ACC patients at low-intermediate risk of recurrence after surgery are a minority; however, they show a far better prognosis than expected (5-year RFS is about 75%) and do not benefit significantly from adjuvant mitotane. The results of the ADIUVO study do not support routine use of adjuvant mitotane in this subset of patients, who may thus avoid a potentially toxic treatment. This is an important step toward personalization of ACC care.

BACKGROUND: Adrenal incidentalomas (AI) are frequently associated with mild autonomous cortisol excess (MACE). The 1mg-dexamethasone suppression test (1mg-DST) differentiates MACE into MACE-1 (possible MACE; post-Dex cortisol 50-138 nmol/L) and MACE-2 (definitive MACE; post-Dex cortisol >138 nmol/L). MACE patients do not show clinically overt signs of hypercortisolism but are thought to carry a higher metabolic risk than nonfunctioning (NF) AIs. However, large-scale data about the metabolic impact of MACE are lacking. METHODS: We included 1208 patients with benign AIs and 1mg-DST results prospectively recruited as part of the ENSAT EURINE-ACT study. Clinical information and 24-h urines were available for all patients. Results of mass spectrometry-based urinary steroid profiling were compared to 162 healthy controls and 56 patients with overt adrenal Cushing’s syndrome (CUSH), using a sex- and age-adjusted linear regression model. RESULTS: MACE was found in 48% of adrenal incidentaloma patients (MACE-1 37%, MACE-2 11%), predominantly affecting women (NF 64%, MACE-1 67%, MACE-2 77%). MACE patients were significantly older than those with NF (p