Understanding Disease
By now you know you have been diagnosed with Cushing’s disease. This rare condition is caused by a noncancerous tumor on the pituitary gland that is located at the base of the brain. The tumor causes the pituitary gland to release too much
adrenocorticotropic hormone (ACTH). ACTH causes the production and release of cortisol, the stress hormone. Having too much ACTH leads to excess amounts of cortisol in the body, which may lead to a number of health issues.
Cushing’s disease (CD) is the most common type of endogenous Cushing's syndrome (CS)1,2 70% to 80% of endogenous CS is caused by CD2
Facts & figures:
Estimated prevalence of nearly 22 cases per million3
The annual incidence of Cushing’s disease is estimated to be 2.4 per million3,*
At least 3x more common in women than men and generally occurs between ages 20 and 504
*True incidence and prevalence rates for CD in the United States are unknown. Estimated data are pooled rates based on a meta-analysis of global CD epidemiology.3
CD Causes Elevated Cortisol
CD is a rare hormonal disorder caused by a pituitary adenoma that secretes excess adrenocorticotropic hormone (ACTH).5 Excess ACTH stimulates the adrenal glands to overproduce cortisol, leading to the clinical manifestations of CD.
Patients with CD experience comorbidities at a higher rate than the general population.5 Although biochemical remission or a surgical cure is usually associated with clinical improvement, some comorbidities may not completely normalize.1,6
Hypertension and diabetes are the main long-term controllable risk factors for cardiovascular events and mortality; repeated long-term follow-up is recommended.7,8
In fact, the duration of hypercortisolism exposure is associated with a greater mortality risk.5,9 It is important to address comorbidities to enhance quality of life and decrease long-term mortality associated with CD.8
Uncontrolled chronic hypercortisolism also leads to elevated risks of multisystem morbidity and mortality.10 Patients with endogenous CS have an approximately 3.5 to 5 times higher mortality risk than the general population.11 While the risks of morbidity and mortality can decrease with biochemical remission, they're not entirely eliminated.1,8
PATIENTS WITH CHRONIC EXPOSURE TO EXCESS CORTISOL are at increased risk for morbidity and mortality12
Venous
Thromboembolism
≈6.8x
higher risk
Heart
Failure
≈6.0x
higher risk
Stroke
≈4.5x
higher risk
Acute Myocardial
Infarction
≈6.8x
higher risk
Predicted Mortality Rate
The predicted mortality rate is nearly 2x higher for patients with uncured CD vs that for patients in remission13
Symptoms can vary greatly by patient, further complicating the path to diagnosis1
Symptoms of hypercortisolism can mimic other common conditions.1 While thin skin, easy bruising, and muscle weakness are key indicators, not all patients exhibit these features. Confirming Cushing’s disease (CD) requires additional screening, including laboratory tests, imaging, and potentially, procedures.2
PATIENTS WITH CHRONIC EXPOSURE TO EXCESS CORTISOL are at increased risk for morbidity and mortality12
The signs and symptoms of CD can be confusing8 :
Signs and symptoms vary from patient to patient12
Not all signs and symptoms are obvious and can depend on extent and persistence of disease8
In some cases, hypercortisolism may not present classically; patients may present with only isolated symptoms4
*Some patients may have hypercortisolism despite not having these typical phenotypes.4
References
Sharma ST, Nieman LK, Feelders RA. Cushing’s syndrome: epidemiology and developments in disease management. Clin Epidemiol. 2015;17(7):281-293. doi:10.2147/CLEP.S44336 2. Lonser RR, Nieman L, Oldfield EH. Cushing’s disease: pathobiology, diagnosis, and management. J Neurosurg. 2017;126(2):404-417. doi:10.3171/2016.1.JNS152119 3. Giuffrida G, Crisafulli S, Ferraù F, et al. Global Cushing's disease epidemiology: a systematic review and meta-analysis of observational studies. Endocrinol Invest. 2022;45(6):1235-1246. doi:10.1007/s40618-022-01754-1 4. Nishioka H, Yamada S. Cushing's disease. Clin Med. 2019;8(11):1951. doi:10.3390/jcm8111951 5. Feelders RA, Pulgar SJ. Kempel A, Pereira AM. The burden of Cushing's disease: clinical and health-related quality of life aspects. Eur J Endocrinol. 2012;167(3):311-326. doi:10.1530/EJE-11-1095 6. Pivonello R, De Leo M, Cozzolino A, Colao A. The Treatment of Cushing's Disease. Endocr Rev. 2015 Aug;36(4):385-486. doi:10.1210/er.2013-1048 7. Nieman LK, Biller BMK, Findling JW. et al. Treatment of Cushing's syndrome: an Endocrine Society clinical practice guideline. Endocrine. 2015;100(8):2807-2831. doi:10.1210/jc.2015-1818 8. Fleseriu M, Auchus R, Bancos I, et al. Consensus on diagnosis and management of Cushing's disease: a guideline update. Lancet Diabetes Endocrinol. 2021;9(12):847-875. doi:10.1016/S2213-8587(21)00235-7 9. Dekkers OM, Biermasz NR, Pereira AM, et al. Mortality in patients treated for Cushing's disease is increased, compared with patients treated for nonfunctioning pituitary macroadenoma. J Clin Endocrinol Metab. 2007;92(3):976-981. doi:10.1210/jc.2006-2112 10. Lacroix A, Feelders RA, Stratakis CA, Nieman LK. Cushing's syndrome. Lancet. 2015;386(9996):913-927. doi:10.1016/S0140-6736(14)61375-1 11. Fleseriu M, Castinetti F. Updates on the role of adrenal steroidogenesis inhibitors in Cushing’s syndrome: a focus on novel therapies. Pituitary. 2016;19(6):643-653. doi:10.1007/s11102-016-0742-1 12. Dekkers OM, Horváth-Puhó E, Jørgensen JOL, et al. Multisystem morbidity and mortality in Cushing’s syndrome: a cohort study. J Clin Endocrinol Metab. 2013;98(6):2277-2284. doi:10.1210/jc.2012-3582 13. van Haalen FM, Broersen LHA, Jørgensen JO, Pereira AM, Dekkers OM. Management of endocrine disease: Mortality remains increased in Cushing’s disease despite biochemical remission: a systematic review and meta-analysis. Eur J Endocrinol. 2015;172(4):R143-R149. doi:10.1530/EJE-14-0556
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