A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat

Background/Objective: Osilodrostat used with block-and-replace dosing regimen is an off-label alternative to traditional management of Cushing syndrome due to adrenocortical carcinoma (ACC). Case Report: A 70-year-old woman presented with abdominal pain and was found to have a large right adrenal ma...

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Main Authors: Kathleen R. Ruddiman, DO, Catherine E. Price, MD, ECNU, FACE, Alexander K. Bonnecaze, MD
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:AACE Clinical Case Reports
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Online Access:http://www.sciencedirect.com/science/article/pii/S2376060524001147
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author Kathleen R. Ruddiman, DO
Catherine E. Price, MD, ECNU, FACE
Alexander K. Bonnecaze, MD
author_facet Kathleen R. Ruddiman, DO
Catherine E. Price, MD, ECNU, FACE
Alexander K. Bonnecaze, MD
author_sort Kathleen R. Ruddiman, DO
collection DOAJ
description Background/Objective: Osilodrostat used with block-and-replace dosing regimen is an off-label alternative to traditional management of Cushing syndrome due to adrenocortical carcinoma (ACC). Case Report: A 70-year-old woman presented with abdominal pain and was found to have a large right adrenal mass and hypercortisolism. Right adrenalectomy was pursued with pathology consistent with diagnosis of ACC. Three months after surgery, hypercortisolemia recurred and bony metastatic disease was detected soon after. The patient received chemotherapy and mitotane; however, mitotane was stopped after development of hemolytic anemia. The patient’s urinary free cortisol became severely elevated, and osilodrostat was subsequently initiated for steroidogenesis inhibition. As dosage was increased, the patient presented with fatigue and hypotension and was diagnosed with adrenal insufficiency. This was managed with hydrocortisone in a block-and-replace dosing strategy. Discussion: ACC can cause severe hypercortisolism, which is associated with significant morbidity and mortality. Osilodrostat was an effective off-label option for steroidogenesis inhibition in our patient who developed severe hypercortisolism and did not tolerate first-line therapy. Our patient also experienced iatrogenic adrenal insufficiency during treatment with osilodrostat, which was successfully managed using a block-and-replace strategy. There are limited cases currently available that document use of osilodrostat under the above circumstances. Conclusion: Although osilodrostat is currently only approved for use in pituitary Cushing disease, we found it effective in off-label use to treat Cushing syndrome due to ACC. Using a block-and-replace treatment strategy was a practical intervention after development of adrenal insufficiency.
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spelling doaj-art-6ea9c93b3d39406bb8d26ec534e3cc6d2025-01-15T04:11:45ZengElsevierAACE Clinical Case Reports2376-06052025-01-011115357A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With OsilodrostatKathleen R. Ruddiman, DO0Catherine E. Price, MD, ECNU, FACE1Alexander K. Bonnecaze, MD2Division of Endocrinology, Department of Internal Medicine, Wake Forest University School of Medicine Winston-Salem, North Carolina; Address correspondence to Dr Kathleen R. Ruddiman, Division of Endocrinology, Department of Internal Medicine, Wake Forest University School of Medicine Winston-Salem, North Carolina, Medical Center Blvd, Winston-Salem, NC 27157.Division of Endocrinology, Department of Internal Medicine, Wake Forest University School of Medicine Winston-Salem, North CarolinaDepartment of Endocrinology, Pinehurst Medical Clinic, Pinehurst, North CarolinaBackground/Objective: Osilodrostat used with block-and-replace dosing regimen is an off-label alternative to traditional management of Cushing syndrome due to adrenocortical carcinoma (ACC). Case Report: A 70-year-old woman presented with abdominal pain and was found to have a large right adrenal mass and hypercortisolism. Right adrenalectomy was pursued with pathology consistent with diagnosis of ACC. Three months after surgery, hypercortisolemia recurred and bony metastatic disease was detected soon after. The patient received chemotherapy and mitotane; however, mitotane was stopped after development of hemolytic anemia. The patient’s urinary free cortisol became severely elevated, and osilodrostat was subsequently initiated for steroidogenesis inhibition. As dosage was increased, the patient presented with fatigue and hypotension and was diagnosed with adrenal insufficiency. This was managed with hydrocortisone in a block-and-replace dosing strategy. Discussion: ACC can cause severe hypercortisolism, which is associated with significant morbidity and mortality. Osilodrostat was an effective off-label option for steroidogenesis inhibition in our patient who developed severe hypercortisolism and did not tolerate first-line therapy. Our patient also experienced iatrogenic adrenal insufficiency during treatment with osilodrostat, which was successfully managed using a block-and-replace strategy. There are limited cases currently available that document use of osilodrostat under the above circumstances. Conclusion: Although osilodrostat is currently only approved for use in pituitary Cushing disease, we found it effective in off-label use to treat Cushing syndrome due to ACC. Using a block-and-replace treatment strategy was a practical intervention after development of adrenal insufficiency.http://www.sciencedirect.com/science/article/pii/S2376060524001147osilodrostatblock-and-replaceCushing syndromehypercortisolismadrenocortical carcinoma
spellingShingle Kathleen R. Ruddiman, DO
Catherine E. Price, MD, ECNU, FACE
Alexander K. Bonnecaze, MD
A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat
AACE Clinical Case Reports
osilodrostat
block-and-replace
Cushing syndrome
hypercortisolism
adrenocortical carcinoma
title A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat
title_full A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat
title_fullStr A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat
title_full_unstemmed A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat
title_short A Case of Severe Cushing Syndrome due to Metastatic Adrenocortical Carcinoma Treated With Osilodrostat
title_sort case of severe cushing syndrome due to metastatic adrenocortical carcinoma treated with osilodrostat
topic osilodrostat
block-and-replace
Cushing syndrome
hypercortisolism
adrenocortical carcinoma
url http://www.sciencedirect.com/science/article/pii/S2376060524001147
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