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Osilodrostat therapy was found to be effective in improving blood pressure parameters, health-related quality of life, depression, and other signs and symptoms in patients with Cushing disease, regardless of the degree of cortisol control, according to study results presented at the 30th Annual Scientific and Clinical Congress of the American Association of Clinical Endocrinologists (ENVISION 2021). Investigators of the LINC 3 study (ClinicalTrials.gov Identifier: NCT02180217), a phase 3, multicenter study with a double-blind, randomized withdrawal period, sought to assess the effects of twice-daily osilodrostat (2-30 mg) on signs, symptoms, and health-related quality of life in 137 patients with Cushing disease. Study endpoints included change in various parameters from baseline to week 48, including mean urinary free cortisol (mUFC) status, cardiovascular-related measures, physical features, Cushing Quality-of-Life score, and Beck Depression Inventory score. Participants were assessed every 2, 4, or 12 weeks depending on the study period, and eligible participants were randomly assigned 1:1 to withdrawal at week 24. The median age of participants was 40.0 years, and women made up 77.4% of the cohort. Of 137 participants, 132 (96%) achieved controlled mUFC at least once during the core study period. At week 24, patients with controlled or partially controlled mUFC showed improvements in blood pressure that were not seen in patients with uncontrolled mUFC; at week 48, improvement in blood pressure occurred regardless of mUFC status. Cushing Quality-of-Life and Beck Depression Inventory scores, along with other metabolic and cardiovascular risk factors, improved from baseline to week 24 and week 48 regardless of degree of mUFC control. Additionally, most participants reported improvements in physical features of hypercortisolism, including hirsutism, at week 24 and week 48. The researchers indicated that the high response rate with osilodrostat treatment was sustained during the 48 weeks of treatment, with 96% of patients achieving controlled mUFC levels; improvements in clinical signs, physical features, quality of life, and depression were reported even among patients without complete mUFC normalization. Disclosure: This study was sponsored by Novartis Pharma AG; however, as of July 12, 2019, osilodrostat is an asset of Recordati AG. Please see the original reference for a full list of authors’ disclosures. Visit Endocrinology Advisor‘s conference section for complete coverage from the AACE Annual Meeting 2021: ENVISION. Reference Pivonello R, Fleseriu M, Newell-Price J, et al. Effect of osilodrostat on clinical signs, physical features and health-related quality of life (HRQoL) by degree of mUFC control in patients with Cushing’s disease (CD): results from the LINC 3 study. Presented at: 2021 AACE Virtual Annual Meeting, May 26-29, 2021. From https://www.endocrinologyadvisor.com/home/conference-highlights/aace-2021/osilodrostat-improves-blood-pressure-hrqol-and-depression-in-patients-with-cushing-disease/-
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- osilodrostat
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Data from LINC3 and LINC4 provide insight into the impact of dosing titration schedules on risk of hypocortisolism-related adverse events associated with osilodrostat use in patients with Cushing's disease. Data from a pair of phase 3 studies presented at the American Academy of Clinical Endocrinology’s 30th Annual Meeting (AACE 2021) is providing insight into the effect of dose titration schedules with use of osilodrostat (Isturisa) in patients with Cushing’s disease. Presented by Maria Fleseriu, MD, of Oregon Health and Science University, the analysis of the LINC3 and LINC4 demonstrated the more gradual titration occurring in LINC4 resulted in a lower proportion of hypocortisolism-related adverse events, suggesting up-titration every 3 weeks rather than every 2 weeks could help lower event risk without compromising mean urinary free cortisol (mUFC) control. “For patients with Cushing’s disease, osilodrostat should be initiated at the recommended starting dose with incremental dose increases, based on individual response/tolerability aimed at normalizing cortisol levels,” concluded investigators. With approval from the US Food and Drug Administration in March 2020 for patients not eligible for pituitary surgery or have undergone the surgery but still have the disease, osilodrostat became the first FDA-approved therapy address cortisol overproduction by blocking 11β-hydroxylase. Based on results of LINC3, data from the trial, and the subsequent LINC4 trial, provide the greatest available insight into use of the agent in this patient population. The study presented at AACE 2021 sought to assess whether slow dose up titration might affect rates of hypocortisolism-related adverse events by comparing titration schedules from both phase 3 trials. Median osilodrostat exposure was 75 (IQR, 48-117) weeks and 70 (IQR, 49-87) weeks in LINC3 and LINC4, respectively. The median time to first mUFC equal to or less than ULN was 41 (IQR, 30-42) days in LINC3 and 35 (IQR, 34-52) days in LINC4. Adverse events potentially related to hypocortisolism were more common among patients in LINC3 (51%, n=70) than LINC4 (27%, n=20). Upon analysis of adverse events, investigators found the most commonly reported type of adverse event was adrenal insufficiency, which included events of glucocorticoid deficiency, adrenocortical insufficiency, steroid withdrawal syndrome, and decreased urinary free cortisol. Results incited the majority of hypocortisolism-related adverse events occurred during the dos titration periods of each trial. In LINC3, 54 of the 70 (77%) hypocortisolism-related adverse events occurred by week 26. In comparison, 58% of hypocortisolism-related adverse events occurring in LINC4 occurred prior to week 12. Investigators noted most of events that occurred were mild or moderate and managed with dose interruption or reduction of osilodrostat or concomitant medications. This study, “Effect of Dosing and Titration of Osilodrostat on Efficacy and Safety in Patients with Cushing's Disease (CD): Results from Two Phase III Trials (LINC3 and LINC4),” was presented at AACE 2021. From https://www.endocrinologynetwork.com/view/fda-panels-votes-to-support-teplizumab-potential-for-delaying-type-1-diabetes
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Osilodrostat treatment was found to be associated with a rapid and sustained reduction in mean concentration of urinary free cortisol (UFC) and improved clinical symptoms in patients with Cushing’s disease, according to the results of a prospective, multicenter, open-label, phase 3 study published in the Lancet Diabetes Endocrinology. Osilodrostat is an oral inhibitor of 11-β hydroxylase cytochrome P450. Adults aged 18 to 75 years of age with diagnosed persistent or recurrent Cushing’s disease were recruited between 2014 and 2017 at 66 hospitals in 19 countries. Cushing’s disease was defined by a mean UFC concentration over a 24-hour period >1.5 times greater than the upper limit of normal (ULN) and morning plasma adrenocorticotropic hormone level above normal limits. Participants (n=137) received 30 mg osilodrostat twice daily, dose which was adjusted every 2 weeks until week 12 on the basis of mean 24-hour UFC concentration. The determined maintenance dose was continued until week 24. At week 26, participants who had achieved 24-hour UFC concentration ≤ ULN and did not need titration after week 12 were randomly assigned in an equal ratio to maintain osilodrostat treatment or were switched to a placebo for 8 weeks. This 8-week period of the study was double-blinded. During weeks 35 to 48, all patients were returned to osilodrostat treatment. In this cohort, mean age was 40.0 years (range, 19.0-70.0 years), 77% of participants were women, the average time since diagnosis was 47.2 months (interquartile range [IQR], 19.0-88.3), 88% had previous pituitary surgery, 16% had pituitary radiation therapy, and 74% had medicinal therapy. At baseline, the mean 24-hour UFC concentration was 1006±1590 nmol/24 h. At week 24, 53% of participants achieved a mean 24-hour UFC concentration ≤ULN without increases in dose after week 12 and were eligible for randomization (osilodrostat, n=36; placebo, n=35). At week 34, more patients receiving osilodrostat vs placebo maintained a complete response (86% vs 29%, respectively; odds ratio [OR], 13.7; 95% CI, 3.7-53.4; P <.0001). Improvements in cardiovascular-related metabolic parameters associated with hypercortisolism and overall measures of well-being were observed. Levels of high-density lipoprotein decreased by week 48 (-0.3 mmol/L; 95% CI, .0.3 to -0.2), mean Cushing’s quality of life score increased by 52.4% (95% CI, 32.3-72.7), and Beck Depression Inventory score decreased by 31.8% (95% CI, -44.3 to -19.3). Adverse events were hypocortisolism (51%), adverse events related with adrenal hormone precursors (42%), nausea (42%), headache (34%), fatigue (28%), and adrenal insufficiency (28%). A total of 18% of participants dropped out of the study due to adverse events. The major limitation of this study was the short withdrawal period (8 weeks) which may not have permitted to observe symptoms of hypercortisolism. “Alongside careful dose adjustments and monitoring of known risks associated with osilodrostat, our findings indicate a positive benefit– risk consideration of treatment for most patients with Cushing’s disease,” concluded the study authors. Disclosure: Multiple authors declared affiliations with industry. Please refer to the original article for a full list of disclosures. Reference Pivonello R, Fleseriu M, Newell-Price J, et al. Efficacy and safety of osilodrostat in patients with Cushing’s disease (LINC 3): a multicentre phase III study with a doubleblind, randomised withdrawal phase. Lancet Diabetes Endocrinol. 2020;S2213-8587(20)30240-0. doi:10.1016/S2213-8587(29)30240-0 From https://www.endocrinologyadvisor.com/home/topics/general-endocrinology/osilodrostat-sustained-reduction-mean-ufc-concentration-cushings-disease/
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J Clin Endocrinol Metab . 2003 Apr;88(4):1554-8. doi: 10.1210/jc.2002-021518. Francesca Pecori Giraldi 1, Mirella Moro, Francesco Cavagnini, Study Group on the Hypothalamo-Pituitary-Adrenal Axis of the Italian Society of Endocrinology Affiliations PMID: 12679438 DOI: 10.1210/jc.2002-021518 Abstract Cushing's disease (CD) presents a marked female preponderance, but whether this skewed gender distribution has any relevance to the presentation and outcome of CD is not known. The aim of the present study was the comparison of clinical features, biochemical indices of hypercortisolism, and surgical outcome among male and female patients with CD. The study population comprised 280 patients with CD (233 females, 47 males) collected by the Italian multicentre study. Epidemiological data, frequency of clinical signs and symptoms, urinary free cortisol (UFC), plasma ACTH and cortisol levels, responses to dynamic testing, and surgical outcome were compared in female and male patients. Male patients with CD presented at a younger age, compared with females (30.5 +/- 1.93 vs. 37.1 +/- 0.86 yr, P < 0.01), with higher UFC and ACTH levels (434.1 +/- 51.96 vs. 342.1 +/- 21.01% upper limit of the normal range for UFC, P < 0.05; 163.9 +/- 22.92 vs. 117.7 +/- 9.59% upper limit of the normal range for ACTH, P < 0.05). No difference in ACTH and cortisol responses to CRH, gradient at inferior petrosal sinus sampling, and cortisol inhibition after low-dose dexamethasone was recorded between sexes. In contrast, the sensitivity of the high-dose dexamethasone test was significantly lower in male than in female patients. Of particular interest, symptoms indicative of hypercatabolic state were more frequent in male patients; indeed, males presented a higher prevalence of osteoporosis, muscle wasting, striae, and nephrolitiasis. Conversely, no symptom was more frequent in female patients with CD. Patients with myopathy, hypokalemia, and purple striae presented significantly higher UFC levels, compared with patients without these symptoms. Lastly, in male patients, pituitary imaging was more frequently negative and immediate and late surgical outcome less favorable. In conclusion, CD appeared at a younger age and with a more severe clinical presentation in males, compared with females, together with more pronounced elevation of cortisol and ACTH levels. Furthermore, high-dose dexamethasone suppression test and pituitary imaging were less reliable in detecting the adenoma in male patients, further burdening the differential diagnosis with ectopic ACTH secretion. Lastly, the postsurgical course of the disease carried a worse prognosis in males. Altogether, these findings depict a different pattern for CD in males and females. From https://pubmed.ncbi.nlm.nih.gov/12679438/
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Metyrapone treatments helped patients with Cushing syndrome reach normal, urinary-free cortisol levels in the short-term and also had long-term benefits, according to a study published in Endocrine. This observational, longitudinal study evaluated the effects of the 11β -hydroxylase inhibitor metyrapone on adult patients with Cushing syndrome. Urinary-free cortisol and late-night salivary cortisol levels were evaluated in 31 patients who were already treated with metyrapone to monitor cortisol normalization and rhythm. The average length of metyrapone treatment was 9 months, and 6 patients had 24 months of treatment. After 1 month of treatment, the mean urinary-free cortisol was reduced from baseline by 67% and mean late-night salivary cortisol level decreased by 57%. Analyzing only patients with severe hypercortisolism, after 1 month of treatment, the mean urinary-free cortisol decreased by 86% and the mean late-night salivary cortisol level decreased 80%. After 3 months, normalization of the mean urinary-free cortisol was established in 68% of patients. Mean late-night salivary cortisol levels took longer to decrease, especially in severe and very severe hypercortisolism, which could take 6 months to drop. Treatment was more successful at normalizing cortisol excretion (70%) than cortisol rhythm (37%). Nausea, abdominal pain, and dizziness were the most common adverse events, but no severe adverse event was reported. Future research is needed to evaluate a larger cohort with randomized dosages and stricter inclusion criteria to evaluate metyrapone's effects on cortisol further. Study researchers conclude that metyrapone was successful and safe in lowering urinary-free cortisol after just 1 month of treatment and controlling long-term levels in patients with Cushing syndrome. This study was supported by Novartis. Reference Ceccato F, Zilio M, Barbot M, et al. Metyrapone treatment in Cushing's syndrome: a real-life study [published online July 16, 2018]. Endocrine. doi: 10.1007/s12020-018-1675-4 From https://www.endocrinologyadvisor.com/general-endocrinology/metyrapone-cushing-syndrome/article/786716/
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Measuring cortisol levels in saliva multiple times a day is a convenient and useful way to determine the best course of treatment for patients with Cushing’s syndrome, a preliminary study shows. The research, “Multiple Salivary Cortisol Measurements Are a Useful Tool to Optimize Metyrapone Treatment in Patients with Cushing’s Syndromes Treatment: Case Presentations,” appeared in the journal Frontiers of Endocrinology. Prompt and effective treatment for hypercortisolism — the excessive amount of cortisol in the blood — is essential to lowering the risk of Cushing’s-associated conditions, including infections, cardiovascular disease, and stroke. Steroid hormone inhibitors, such as HRA Pharma’s Metopirone (metyrapone), have been used significantly in Cushing’s syndrome patients. These therapies not only suppress cortisol levels, but also avoid adrenal insufficiency (where not enough cortisol is produced) and restore the circadian rhythm, which is disrupted in Cushing’s patients. However, effective medical treatment requires monitoring cortisol activity throughout the day. Salivary measurements of cortisol are a well-known method for diagnosing and predicting the risk of recurrence of Cushing’s syndrome. The method is convenient for patients and can be done in outpatient clinics. However, the medical field lacks data on whether measuring cortisol in saliva works for regulating treatment. Researchers analyzed the effectiveness of salivary cortisol measurements for determining the best dosage and treatment timing of Cushing’s patients with Metopirone. The study included six patients, three with cortisol-secreting masses in the adrenal glands and and three with ACTH (or adrenocorticotropin)-secreting adenomas in the pituitary glands, taking Metopirone. Investigators collected samples before and during treatment to assess morning serum cortisol and urinary free cortisol (UFC). Patients also had salivary cortisol assessments five times throughout the day. Saliva samples were collected at 6 a.m. (wake-up time), 8 a.m. (before breakfast), noon (before lunch), 6 p.m. (before dinner), and 10 p.m. (before sleep). Other studies have used UFC assessments to monitor treatment. However, the inability of this parameter to reflect changes in diurnal cortisol requires alternative approaches. Results showed that although UFC was normalized in five out of six patients, multiple salivary cortisol measurements showed an impaired diurnal cortisol rhythm in these patients. Whereas patients with cortisol-secreting adrenocortical adenoma showed elevated cortisol levels throughout the day, those with ACTH-secreting pituitary adenoma revealed increased levels mainly in the morning. This finding indicates that “the significance of elevated morning cortisol levels is different depending on the disease etiology,” the researchers wrote. In a prospective case study to better assess the effectiveness of performing multiple salivary cortisol assessments, the research team analyzed one of the participants who had excessive cortisol production that was not controlled with four daily doses of Metoripone (a daily total of 2,250 mg). Results revealed that cortisol levels increased before each dosage. After the patient’s treatment regimen was changed to a 2,500 mg dose divided into five daily administrations, researchers observed a significant improvement in the diurnal cortisol pattern, as well as in UFC levels. Subsequent analysis revealed that performing multiple salivary cortisol measurements helps with a more precise assessment of excess cortisol than analyzing UFC levels, or performing a unique midnight salivary cortisol collection, the researchers said. Although more studies are required, the results “suggest that multiple salivary cortisol measurements can be a useful tool to visualize the diurnal cortisol rhythm and to determine the dose and timing of metyrapone [Metopirone] during the treatment in patients with [Cushing’s syndrome],” the researchers wrote. Future studies should include a larger sample size, evaluate changes over a longer term, use a standardized protocol for treatment dosing and timing, and evaluate changes in a patient’s quality of life, the investigators said. From https://cushingsdiseasenews.com/2018/02/15/multiple-saliva-cortisol-checks-cushings-metyrapone-study/
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"As a potential solution to the limitations of these tests, hair cortisol has been increasingly studied as an additional means to diagnose patients with Cushing Syndrome. Much like hemoglobin A1C is a longitudinal marker of blood glucose levels, hair cortisol can be a measure of the body's glucocorticoid levels over the previous several weeks to months." Read more at https://cushieblog.com/2017/02/09/hair-test-for-cushing-syndrome/
