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ABSTRACT: Context
Some reports suggest that acromegaly in elderly patients has a more benign clinical behavior and could have a better response to first-generation long-acting somatostatin receptor ligands (SRL). However, there is no specific therapeutic protocol for this special subgroup of patients.Objective
This study aimed at identifying predictors of response to SRL in elderly patients.Design
Multicentric retrospective nationwide study of patients diagnosed with acromegaly at or over the age of 65 years.Results
One-hundred and eighteen patients (34 men, 84 women, mean age at diagnosis 71.7 ± 5.4 years old) were included. Basal insulin-like growth factor type 1 (IGF-1) above the upper limit of normal (ULN) and growth hormone (GH) levels (mean ± SD) were 2.7 ± 1.4 and 11.0 ± 11.9 ng/ml, respectively. The mean maximal tumor diameter was 12.3 ± 6.4 mm, and up to 68.6% were macroadenoma. Seventy-two out of 118 patients (61.0%) underwent surgery as primary treatment. One-third of patients required first-line medical treatment due to a rejection of surgical treatment or non-suitability because of high surgical risk. After first-line surgery, 45/72 (63.9%) were in disease remission, and 16/34 (46.7%) of those treated with SRL had controlled disease. Patients with basal GH at diagnosis ≤6 ng/ml had lower IGF-1 levels and had smaller tumors, and more patients in this group reached control with SRL (72.7% vs. 33.3%; p < 0.04) [OR: 21.3, IC: 95% (2.4-91.1)], while male patients had a worse response [OR: 0.09, IC 95% (0.01-0.75)]. The predictive model curve obtained for SRL response showed an AUC of 0.82 CI (0.71-0.94).Conclusions
The most frequent phenotype in newly diagnosed acromegaly in the elderly includes small adenomas and moderately high IGF-1 levels. GH at diagnosis ≤6 ng/ml and female gender, but not age per se, were associated with a greater chance of response to SRL.
SUBMITTER: Biagetti B
PROVIDER: S-EPMC9523598 | biostudies-literature | 2022
REPOSITORIES: biostudies-literature
Biagetti Betina B Iglesias Pedro P Villar-Taibo Rocío R Moure María-Dolores MD Paja Miguel M Araujo-Castro Marta M Ares Jessica J Álvarez-Escola Cristina C Vicente Almudena A Álvarez Guivernau Èlia È Novoa-Testa Iria I Guerrero Perez Fernando F Cámara Rosa R Lecumberri Beatriz B García Gómez Carlos C Bernabéu Ignacio I Manjón Laura L Gaztambide Sonia S Cordido Fernando F Webb Susan M SM Menéndez-Torre Edelmiro Luis EL Díez Juan J JJ Simó Rafael R Puig-Domingo Manel M
Frontiers in endocrinology 20220916
<h4>Context</h4>Some reports suggest that acromegaly in elderly patients has a more benign clinical behavior and could have a better response to first-generation long-acting somatostatin receptor ligands (SRL). However, there is no specific therapeutic protocol for this special subgroup of patients.<h4>Objective</h4>This study aimed at identifying predictors of response to SRL in elderly patients.<h4>Design</h4>Multicentric retrospective nationwide study of patients diagnosed with acromegaly at ...[more]