Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly

PurposeDetermine predictive factors for long-term remission of acromegaly after transsphenoidal resection of growth hormone (GH)-secreting pituitary adenomas.MethodsWe identified 94 patients who had undergone transsphenoidal resection of GH-secreting pituitary adenomas for treatment of acromegaly at...

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Autores principales: Tyler Cardinal, Casey Collet, Michelle Wedemeyer, Peter A. Singer, Martin Weiss, Gabriel Zada, John D. Carmichael
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Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/bcb6d8b8319445fbb22110037ee1cece
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spelling oai:doaj.org-article:bcb6d8b8319445fbb22110037ee1cece2021-11-18T07:15:39ZPostoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly1664-239210.3389/fendo.2021.743052https://doaj.org/article/bcb6d8b8319445fbb22110037ee1cece2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fendo.2021.743052/fullhttps://doaj.org/toc/1664-2392PurposeDetermine predictive factors for long-term remission of acromegaly after transsphenoidal resection of growth hormone (GH)-secreting pituitary adenomas.MethodsWe identified 94 patients who had undergone transsphenoidal resection of GH-secreting pituitary adenomas for treatment of acromegaly at the USC Pituitary Center from 1999-2019 to determine the predictive value of postoperative endocrine lab values.ResultsPatients underwent direct endoscopic endonasal (60%), microscopic transsphenoidal (38%), and extended endoscopic approaches (2%). The cohort was 63% female and 37% male, with average age of 48.9 years. Patients presented with acral enlargement (72, 77%), macroglossia (40, 43%), excessive sweating (39, 42%), prognathism (38, 40%) and frontal bossing (35, 37%). Seventy-five (80%) were macroadenomas and 19 (20%) were microadenomas. Cavernous sinus invasion was present in 45%. Available immunohistochemical data demonstrated GH staining in 88 (94%) and prolactin in 44 (47%). Available postoperative MRI demonstrated gross total resection in 63% of patients and subtotal resection in 37%. Most patients (66%) exhibited hormonal remission at 12 weeks postoperatively. Receiver operating characteristic (ROC) curves demonstrated postoperative day 1 (POD1) GH levels ≥1.55ng/mL predicted failure to remit from surgical resection alone (59% specificity, 75% sensitivity). A second ROC curve showed decrease in corrected insulin-like growth factor-1 (IGF-1) levels of at least 37% prognosticated biochemical control (90% sensitivity, 80% specificity).ConclusionPOD1 GH and short-term postoperative IGF-1 levels can be used to successfully predict immediate and long-term hormonal remission respectively. A POD1 GH cutoff can identify patients likely to require adjuvant therapy to emphasize clinical follow-up.Tyler CardinalCasey ColletMichelle WedemeyerPeter A. SingerPeter A. SingerMartin WeissGabriel ZadaJohn D. CarmichaelJohn D. CarmichaelFrontiers Media S.A.articleacromegalytranssphenoidal resectiongrowth hormoneIGF- Ihormonal remissionDiseases of the endocrine glands. Clinical endocrinologyRC648-665ENFrontiers in Endocrinology, Vol 12 (2021)
institution DOAJ
collection DOAJ
language EN
topic acromegaly
transsphenoidal resection
growth hormone
IGF- I
hormonal remission
Diseases of the endocrine glands. Clinical endocrinology
RC648-665
spellingShingle acromegaly
transsphenoidal resection
growth hormone
IGF- I
hormonal remission
Diseases of the endocrine glands. Clinical endocrinology
RC648-665
Tyler Cardinal
Casey Collet
Michelle Wedemeyer
Peter A. Singer
Peter A. Singer
Martin Weiss
Gabriel Zada
John D. Carmichael
John D. Carmichael
Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly
description PurposeDetermine predictive factors for long-term remission of acromegaly after transsphenoidal resection of growth hormone (GH)-secreting pituitary adenomas.MethodsWe identified 94 patients who had undergone transsphenoidal resection of GH-secreting pituitary adenomas for treatment of acromegaly at the USC Pituitary Center from 1999-2019 to determine the predictive value of postoperative endocrine lab values.ResultsPatients underwent direct endoscopic endonasal (60%), microscopic transsphenoidal (38%), and extended endoscopic approaches (2%). The cohort was 63% female and 37% male, with average age of 48.9 years. Patients presented with acral enlargement (72, 77%), macroglossia (40, 43%), excessive sweating (39, 42%), prognathism (38, 40%) and frontal bossing (35, 37%). Seventy-five (80%) were macroadenomas and 19 (20%) were microadenomas. Cavernous sinus invasion was present in 45%. Available immunohistochemical data demonstrated GH staining in 88 (94%) and prolactin in 44 (47%). Available postoperative MRI demonstrated gross total resection in 63% of patients and subtotal resection in 37%. Most patients (66%) exhibited hormonal remission at 12 weeks postoperatively. Receiver operating characteristic (ROC) curves demonstrated postoperative day 1 (POD1) GH levels ≥1.55ng/mL predicted failure to remit from surgical resection alone (59% specificity, 75% sensitivity). A second ROC curve showed decrease in corrected insulin-like growth factor-1 (IGF-1) levels of at least 37% prognosticated biochemical control (90% sensitivity, 80% specificity).ConclusionPOD1 GH and short-term postoperative IGF-1 levels can be used to successfully predict immediate and long-term hormonal remission respectively. A POD1 GH cutoff can identify patients likely to require adjuvant therapy to emphasize clinical follow-up.
format article
author Tyler Cardinal
Casey Collet
Michelle Wedemeyer
Peter A. Singer
Peter A. Singer
Martin Weiss
Gabriel Zada
John D. Carmichael
John D. Carmichael
author_facet Tyler Cardinal
Casey Collet
Michelle Wedemeyer
Peter A. Singer
Peter A. Singer
Martin Weiss
Gabriel Zada
John D. Carmichael
John D. Carmichael
author_sort Tyler Cardinal
title Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly
title_short Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly
title_full Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly
title_fullStr Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly
title_full_unstemmed Postoperative GH and Degree of Reduction in IGF-1 Predicts Postoperative Hormonal Remission in Acromegaly
title_sort postoperative gh and degree of reduction in igf-1 predicts postoperative hormonal remission in acromegaly
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/bcb6d8b8319445fbb22110037ee1cece
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