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Pivonello R, Simeoli C, Paola ND, Larocca A, Crescenzo EM, Colao A. Osilodrostat: A Novel Potent Inhibitor of 11-Beta-Hydroxylase for the Treatment of Cushing's Syndrome. TOUCHREVIEWS IN ENDOCRINOLOGY 2024; 20:43-51. [PMID: 38812665 PMCID: PMC11132648 DOI: 10.17925/ee.2024.20.1.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 07/31/2023] [Indexed: 05/31/2024]
Abstract
Osilodrostat is a novel potent oral steroidogenesis inhibitor with a non-steroidal chemical structure, recently approved for the treatment of adult patients with endogenous Cushing's syndrome, and Cushing's disease not cured bytab pituitary surgery or in whom pituitary surgery is not an option. Osilodrostat has been evaluated in different multicentre phase II and III clinical studies, and has shown to have notable effects, such as significant reductions in cortisol secretion, associated with significant improvement in body weight, blood pressure, glucose metabolism, lipid profile, psychological status and quality of life. The favourable safety profile, combined with the relevant efficacy, could make osilodrostat suitable as medical treatment in several phases of the Cushing's syndrome treatment journey: before surgery, as preoperative treatment, or instead of surgery, in cases where surgery is not an option or refused, as first-line treatment; after surgery, in cases of persistent or recurrent disease, as second-line treatment; after second surgery or radiotherapy following pituitary surgery as bridging treatment waiting for the definitive disease control, as third-line treatment. Further real-world clinical experience data are needed to confirm the current knowledge.
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Affiliation(s)
- Rosario Pivonello
- Dipartimento di Medicina Clinicae Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologiae Nutrizione, Università “Federico II” di Napoli, Naples, Italy
- UNESCO Chair for Health Education and Sustainable Development, University Federico II, Naples, Italy
| | - Chiara Simeoli
- Dipartimento di Medicina Clinicae Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologiae Nutrizione, Università “Federico II” di Napoli, Naples, Italy
| | - Nicola Di Paola
- Dipartimento di Medicina Clinicae Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologiae Nutrizione, Università “Federico II” di Napoli, Naples, Italy
| | - Angelica Larocca
- Dipartimento di Medicina Clinicae Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologiae Nutrizione, Università “Federico II” di Napoli, Naples, Italy
| | - Erminio Massimo Crescenzo
- Dipartimento di Medicina Clinicae Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologiae Nutrizione, Università “Federico II” di Napoli, Naples, Italy
| | - Annamaria Colao
- Dipartimento di Medicina Clinicae Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologiae Nutrizione, Università “Federico II” di Napoli, Naples, Italy
- UNESCO Chair for Health Education and Sustainable Development, University Federico II, Naples, Italy
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van der Giet M, Scholl U. [Secondary hypertension]. MMW Fortschr Med 2022; 164:35-41. [PMID: 35359291 DOI: 10.1007/s15006-022-0722-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Markus van der Giet
- Medizinische Klinik mit SP Nephrologie, Charité - Univ.-Medizin Berlin/Campus Benjamin Franklin CBF, Hindenburgdamm 30, 12203, Berlin, Germany.
| | - Ute Scholl
- Center of Functional Genomics, Universitätsmedizin Berlin, Hessische Straße 4A, 10115, Berlin, Germany
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Zhang QQ, Li GQ, Zhong Y, Wang J, Wang AN, Zhou X, Mao XM. Empagliflozin improves chronic hypercortisolism-induced abnormal myocardial structure and cardiac function in mice. Ther Adv Chronic Dis 2020; 11:2040622320974833. [PMID: 33294147 PMCID: PMC7705186 DOI: 10.1177/2040622320974833] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/29/2020] [Indexed: 01/10/2023] Open
Abstract
Background: Chronic exposure to excess glucocorticoids is frequently associated with a specific cardiomyopathy. Empagliflozin, a sodium-glucose cotransporter 2 (SGLT2) inhibitor, has beneficial effects as it aids in the reduction of heart failure and cardiovascular mortality in hospitalized patients. The aim of this study was to investigate the effects of empagliflozin on chronic hypercortisolism-induced myocardial fibrosis and myocardial dysfunction in mice. Methods: Male C57BL/6J mice (6 weeks old) were randomized to control, corticosterone (CORT), and empagliflozin + CORT groups. After 4 weeks of administration, heart structure and function were evaluated by echocardiography, and peripheral blood and tissue samples were collected. Expressions of Ccl2, Itgax, Mrc1, and Adgre1 mRNA in heart tissue were evaluated by RT-PCR, and signal transducer and activator of transcription 3 (STAT3) and Toll-like receptor 4 (TLR4) protein expression were analyzed by Western blotting. Results: Empagliflozin effectively reduced body weight, liver triglyceride, visceral adipose volume, and uric acid in CORT-treated mice. Left ventricular hypertrophy and cardiac dysfunction were improved significantly, phosphorylated STAT3 and TLR4 were alleviated, and macrophage infiltration in the myocardium was inhibited after administration of empagliflozin in CORT-treated mice. Conclusion: Empagliflozin has beneficial effects on specific cardiomyopathy associated with CORT, and the results provide new evidence that empagliflozin might be a potential drug for the prevention of this disease.
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Affiliation(s)
- Qing-Qing Zhang
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Guo-Qing Li
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yi Zhong
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jie Wang
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - An-Ning Wang
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao Zhou
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao-Ming Mao
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 ChangLe St., Nanjing, 210006, China
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Rossi GP, Bisogni V, Rossitto G, Maiolino G, Cesari M, Zhu R, Seccia TM. Practice Recommendations for Diagnosis and Treatment of the Most Common Forms of Secondary Hypertension. High Blood Press Cardiovasc Prev 2020; 27:547-560. [PMID: 33159664 PMCID: PMC7661394 DOI: 10.1007/s40292-020-00415-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/10/2020] [Indexed: 12/14/2022] Open
Abstract
The vast majority of hypertensive patients are never sought for a cause of their high blood pressure, i.e. for a 'secondary' form of arterial hypertension. This under detection explains why only a tiny percentage of hypertensive patients are ultimately diagnosed with a secondary form of arterial hypertension. The prevalence of these forms is, therefore, markedly underestimated, although, they can involve as many as one-third of the cases among referred patients and up to half of those with difficult to treat hypertension. The early detection of a secondary form is crucial, because if diagnosed in a timely manner, these forms can be cured at long-term, and even when cure cannot be achieved, their diagnosis provides a better control of high blood pressure, and allows prevention of hypertension-mediated organ damage, and related cardiovascular complications. Enormous progress has been made in the understanding, diagnostic work-up, and management of secondary hypertension in the last decades. The aim of this minireview is, therefore, to provide updated concise information on the screening, diagnosis, and management of the most common forms, including primary aldosteronism, renovascular hypertension, pheochromocytoma and paraganglioma, Cushing's syndrome, and obstructive sleep apnea.
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Affiliation(s)
- Gian Paolo Rossi
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy.
| | - Valeria Bisogni
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy
| | - Giacomo Rossitto
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy
| | - Giuseppe Maiolino
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy
| | - Maurizio Cesari
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy
| | - Rui Zhu
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy
| | - Teresa Maria Seccia
- Clinica dell'Ipertensione Arteriosa, Department of Medicine-DIMED, University of Padua, University Hospital, via Giustiniani, 2, 35126, Padova, Italy
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Carey RM, Calhoun DA, Bakris GL, Brook RD, Daugherty SL, Dennison-Himmelfarb CR, Egan BM, Flack JM, Gidding SS, Judd E, Lackland DT, Laffer CL, Newton-Cheh C, Smith SM, Taler SJ, Textor SC, Turan TN, White WB. Resistant Hypertension: Detection, Evaluation, and Management: A Scientific Statement From the American Heart Association. Hypertension 2019; 72:e53-e90. [PMID: 30354828 DOI: 10.1161/hyp.0000000000000084] [Citation(s) in RCA: 566] [Impact Index Per Article: 113.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Resistant hypertension (RH) is defined as above-goal elevated blood pressure (BP) in a patient despite the concurrent use of 3 antihypertensive drug classes, commonly including a long-acting calcium channel blocker, a blocker of the renin-angiotensin system (angiotensin-converting enzyme inhibitor or angiotensin receptor blocker), and a diuretic. The antihypertensive drugs should be administered at maximum or maximally tolerated daily doses. RH also includes patients whose BP achieves target values on ≥4 antihypertensive medications. The diagnosis of RH requires assurance of antihypertensive medication adherence and exclusion of the "white-coat effect" (office BP above goal but out-of-office BP at or below target). The importance of RH is underscored by the associated risk of adverse outcomes compared with non-RH. This article is an updated American Heart Association scientific statement on the detection, evaluation, and management of RH. Once antihypertensive medication adherence is confirmed and out-of-office BP recordings exclude a white-coat effect, evaluation includes identification of contributing lifestyle issues, detection of drugs interfering with antihypertensive medication effectiveness, screening for secondary hypertension, and assessment of target organ damage. Management of RH includes maximization of lifestyle interventions, use of long-acting thiazide-like diuretics (chlorthalidone or indapamide), addition of a mineralocorticoid receptor antagonist (spironolactone or eplerenone), and, if BP remains elevated, stepwise addition of antihypertensive drugs with complementary mechanisms of action to lower BP. If BP remains uncontrolled, referral to a hypertension specialist is advised.
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Koracevic G, Stojkovic M, Lovic D, Pavlovic M, Kostic T, Kutlesic M, Micic S, Koracevic M, Djordjevic M. Should Cushing's Syndrome be Considered as a Disease with High Cardiovascular Risk in Relevant Guidelines? Curr Vasc Pharmacol 2018; 18:12-24. [PMID: 30289080 DOI: 10.2174/1570161116666181005122339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 09/29/2018] [Accepted: 09/29/2018] [Indexed: 12/27/2022]
Abstract
A considerable amount of data supports a 1.8-7.4-fold increased mortality associated with Cushing's syndrome (CS). This is attributed to a high occurrence of several cardiovascular disease (CVD) risk factors in CS [e.g. adiposity, arterial hypertension (AHT), dyslipidaemia and type 2 diabetes mellitus (T2DM)]. Therefore, practically all patients with CS have the metabolic syndrome (MetS), which represents a high CVD risk. Characteristically, despite a relatively young average age, numerous patients with CS display a 'high' or 'very high' CVD risk (i.e. risk of a major CVD event >20% in the following 10 years). Although T2DM is listed as a condition with a high CVD risk, CS is not, despite the fact that a considerable proportion of the CS population will develop T2DM or impaired glucose tolerance. CS is also regarded as a risk factor for aortic dissection in current guidelines. This review considers the evidence supporting listing CS among high CVD risk conditions.
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Affiliation(s)
- Goran Koracevic
- Department for Cardiovascular Diseases, Clinical Centre, Nis, Serbia.,Medical Faculty, University of Nis, Nis, Serbia
| | | | - Dragan Lovic
- Clinic for Internal Medicine Intermedica, Nis, Serbia
| | - Milan Pavlovic
- Department for Cardiovascular Diseases, Clinical Centre, Nis, Serbia.,Medical Faculty, University of Nis, Nis, Serbia
| | - Tomislav Kostic
- Department for Cardiovascular Diseases, Clinical Centre, Nis, Serbia.,Medical Faculty, University of Nis, Nis, Serbia
| | | | | | | | - Milan Djordjevic
- Health Centre Jagodina, Emergency Medical Service, Jagodina, Serbia
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Yang T, Zubcevic J. Gut-Brain Axis in Regulation of Blood Pressure. Front Physiol 2017; 8:845. [PMID: 29118721 PMCID: PMC5661004 DOI: 10.3389/fphys.2017.00845] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/10/2017] [Indexed: 01/04/2023] Open
Abstract
Hypertension (HTN) is an escalating health issue worldwide. It is estimated that 1.56 billion people will suffer from high blood pressure (BP) by 2025. Recent studies reported an association between gut dysbiosis and HTN, thus proposing interesting avenues for novel treatments of this condition. The sympathetic nervous system (SNS) and the immune system (IS) play a recognized role in the onset and progression of HTN, while reciprocal communication between gut microbiota and the brain can regulate BP by modulating the interplay between the IS and SNS. This review presents the current state of the science implicating brain-gut connection in HTN, highlighting potential pathways of their interaction in control of BP.
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Affiliation(s)
| | - Jasenka Zubcevic
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
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Cho YS, Kim KN, Shim JH. Effects of Cellular 11β-hydroxysteroid Dehydrogenase 1 on LPS-induced Inflammatory Responses in Synovial Cell Line, SW982. Immune Netw 2017; 17:171-178. [PMID: 28680378 PMCID: PMC5484647 DOI: 10.4110/in.2017.17.3.171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/03/2017] [Accepted: 04/10/2017] [Indexed: 01/21/2023] Open
Abstract
11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) catalyzes the conversion of inactive cortisone into active cortisol, which has pleiotropic roles in various biological conditions, such as immunological and metabolic homeostasis. Cortisol is mainly produced in the adrenal gland, but can be locally regenerated in the liver, fat, and muscle. Its diverse actions are primarily mediated by binding to the glucocorticoid receptor. SW982, a human synovial cell line, expresses 11β-HSD type 1, but not type 2, that catalyzes the conversion of cortisone to cortisol. In this study, therefore, we investigated the control of lipopolysaccharide (LPS)-induced inflammatory responses by prereceptor regulation-mediated maintenance of cortisol levels. Preliminarily, cell seeding density and incubation period were optimized for analyzing the catalytic activity of SW982. Additionally, cellular 11β-HSD1 still remained active irrespective of monolayer or spheroid culture conditions. Inflammatory stimulants, such as interleukin (IL)-1β, tumor necrosis factor (TNF)α, and LPS, did not affect the catalytic activity of 11β-HSD1, although a high dose of LPS significantly decreased its activity. Additionally, autocrine effects of cortisol on inflammatory responses were investigated in LPS-stimulated SW982 cells. LPS upregulated pro-inflammatory cytokines, including IL-6 and IL-1β, in SW982 cells, while cortisol production, catalyzed by cellular 11β-HSD1, downregulated LPS-stimulated cytokines. Furthermore, suppression of NFκB activation-mediated pro-inflammatory responses by cortisol was revealed. In conclusion, the activity of cellular 11β-HSD1 was closely correlated with suppression of LPS-induced inflammation. Therefore, these results partly support the notion that prereceptor regulation of locally regenerated cortisol could be taken into consideration for treatment of inflammation-associated diseases, including arthritis.
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Affiliation(s)
- Young Sik Cho
- Department of Pharmacy, Keimyung University, Daegu 42601, Korea
| | - Ki Nam Kim
- Department of Pharmacy, Keimyung University, Daegu 42601, Korea
| | - Jung Hyun Shim
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Mokpo 58554, Korea
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Abstract
Severe Cushing's syndrome presents an acute emergency and is defined by massively elevated random serum cortisol [more than 36 μg/dL (1000 nmol/L)] at any time or a 24-h urinary free cortisol more than fourfold the upper limit of normal and/or severe hypokalaemia (<3.0 mmol/L), along with the recent onset of one or more of the following: sepsis, opportunistic infection, intractable hypokalaemia, uncontrolled hypertension, heart failure, gastrointestinal haemorrhage, glucocorticoid-induced acute psychosis, progressive debilitating myopathy, thromboembolism or uncontrolled hyperglycaemia and ketocacidosis. Treatment focuses on the management of the severe metabolic disturbances followed by rapid resolution of the hypercortisolaemia, and subsequent confirmation of the cause. Emergency lowering of the elevated serum cortisol is most rapidly achieved with oral metyrapone and/or ketoconazole; if parenteral therapy is required then intravenous etomidate is rapidly effective in almost all cases, but all measures require careful supervision. The optimal order and combination of drugs to treat severe hypercortisolaemia-mostly in the context of ectopic ACTH-secreting syndrome, adrenocortical carcinoma or an ACTH-secreting pituitary adenoma (mainly macroadenomas)-is not yet established. Combination therapy may be useful not only to rapidly control cortisol excess but also to lower individual drug dosages and consequently the possibility of adverse effects. If medical treatments fail, bilateral adrenalectomy should be performed in the shortest possible time span to prevent the debilitating complications of uncontrolled hypercortisolaemia.
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Affiliation(s)
- Krystallenia I Alexandraki
- Clinic of Endocrine Oncology, Department of Pathophysology, National University of Athens, Athens, Greece
| | - Ashley B Grossman
- Oxford Centre for Diabetes, Endocrinology and Metabolism, Churchill Hospital, University of Oxford, Oxford, OX3 7LE, UK.
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Oblak ML, Bacon NJ, Covey JL. Perioperative Management and Outcome of Bilateral Adrenalectomy in 9 Dogs. Vet Surg 2016; 45:790-7. [DOI: 10.1111/vsu.12514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 04/22/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Michelle L. Oblak
- Department of Clinical Studies; Ontario Veterinary College, University of Guelph; Guelph Canada
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Bertagna X, Pivonello R, Fleseriu M, Zhang Y, Robinson P, Taylor A, Watson CE, Maldonado M, Hamrahian AH, Boscaro M, Biller BMK. LCI699, a potent 11β-hydroxylase inhibitor, normalizes urinary cortisol in patients with Cushing's disease: results from a multicenter, proof-of-concept study. J Clin Endocrinol Metab 2014; 99:1375-83. [PMID: 24423285 DOI: 10.1210/jc.2013-2117] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
INTRODUCTION The clinical features and increased mortality associated with Cushing's syndrome result from a chronic excess of circulating cortisol. As LCI699 potently inhibits 11β-hydroxylase, which catalyzes the final step of cortisol synthesis, it is a potential new treatment for Cushing's disease, the most common cause of endogenous Cushing's syndrome. METHODS Adult patients with moderate-to-severe Cushing's disease (urinary free cortisol [UFC] levels >1.5 × ULN [upper limit of normal]) received oral LCI699 for 10 weeks in this proof-of-concept study. LCI699 was initiated at 4 mg/d in two equal doses; the dose was escalated every 14 days to 10, 20, 40, and 100 mg/d until UFC normalized, whereupon the dose was maintained until treatment ended (day 70). The primary endpoint was UFC ≤ ULN or a ≥50% decrease from baseline at day 70. RESULTS Twelve patients were enrolled and completed the study. Baseline UFC ranged over 1.6-17.0 × ULN. All 12 patients achieved UFC ≤ULN or a ≥50% decrease from baseline at day 70; 11 (92%) had normal UFC levels at that time. After treatment discontinuation (day 84), UFC was >ULN in 10 patients with available measurements. Mean 11-deoxycortisol, 11-deoxycorticosterone, and adrenocorticotropic hormone levels increased during treatment and declined after discontinuation. Mean systolic and diastolic blood pressure decreased from baseline by 10.0 and 6.0 mmHg, respectively. LCI699 was generally well tolerated; most adverse events (AEs) were mild or moderate. The most common AEs included fatigue (7/12), nausea (5/12), and headache (3/12). No serious drug-related AEs were reported. CONCLUSIONS LCI699 was efficacious and well tolerated in patients with Cushing's disease enrolled in this proof-of-concept study.
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Affiliation(s)
- Xavier Bertagna
- Department of Endocrinology (X.B.), Centre de Référence des Maladies Rares de la Surrénale, Hôpital Cochin, Faculté de Médecine Paris Descartes, Université Paris 5, Paris 75014, France; Dipartimento di Medicina Clinica e Chirurgia (R.P.), Università Federico II di Napoli, IT-80131, Naples, Italy; Department of Medicine and Neurological Surgery (M.F.), Northwest Pituitary Center, Oregon Health and Science University, Portland, Oregon 97239-3098; Novartis Pharmaceuticals Corporation (Y.Z.), East Hanover, New Jersey 07936; Novartis Pharmaceuticals UK Limited (P.R.), Horsham, West Sussex, RH12 5AB, United Kingdom; Novartis Institutes for BioMedical Research (A.T., C.E.W.), Cambridge, Massachusetts 02139; Clinical Development (M.M.), Oncology Business Unit, Novartis Pharma AG, CH-4002 Basel, Switzerland; Department of Endocrinology, Diabetes, and Metabolism (A.H.H.), Cleveland Clinic Foundation, Cleveland, Ohio 44106; Division of Endocrinology (M.B.), Polytechnic University of Marche, 60121 Ancona, Italy; and Neuroendocrine Clinical Center (B.M.K.B.), Massachusetts General Hospital, Boston, Massachusetts 02114
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