Endocrine Abstracts

Introduction: Most thyroid cancer (TC) patients have a good prognosis, but some of them show aggressive behavior and are resistant to treatment. Still no effective biomarkers are available to predict which patients will progress. Epigenetic alterations are a hallmark of cancer, and profiling DNA methylation has allowed a better understanding of the epigenetic landscape of TC and its influence in TC progression. However, bulk DNA methylomes include information not only from tum...

First generation somatostatin receptor ligands (SRL) are the first-line drugs in primary acromegaly treatment or after surgical failure in patients with active acromegaly. In previous studies we confirmed the association of the expression of SSTR2, Ki67 and E-cadherin (CDH1) in responsive GH-secreting adenomas response to SRL. Moreover, E-cadherin showed a greater predictive capacity than most of the markers described. Loss of E-cadherin is a typical mark of ...

Non-functioning pituitary adenomas (NFPA) are the most common pituitary tumours. They usually come to medical attention because of a mass effect and/or hypopituitarism. Tumour shrinkage during therapy with either dopamine agonists (DA) or somatostatin analogues (SSA) has been previously reported in some cases; however, response of NFPA to medical treatment is still poor and unpredictable. Our aim was to explore the molecular mechanisms underlying this lack of efficacy through ...

Background: Differentiated thyroid cancer (DTC) is usually associated with an excellent prognosis. The main cause of death is due to distant metastases, but distant metastatic DTC (dmDTC) presents an interpatient heterogeneity. Some patients with distant metastases live with stable disease for many years, while others die very early. Still no effective biomarkers are available to predict either which patients will eventually develop distant metastases or what will be the final...

Background: T2-weighted magnetic resonance imaging (MRI) signal has been recently linked with a better tumor response to pasireotide treatment in patients with acromegaly (ACRO). Our aim was to evaluate the prevalence of this radiological feature and its association to therapeutic outcomes in a large cohort of ACRO patients treated with pasireotide.Methods: A retrospective multicentre study was performed in 15 Spanish tertiary university hospitals includ...

Pituitary adenomas are heterogeneous, rare tumors, which hinders analysis of large numbers of cases with common approaches. To overcome this, a multicenter, clinical-basic strategy was proposed aimed at enhancing the tools to diagnose and manage pituitary tumors by combining clinical/pathological/molecular information. This initiative was developed by the Sociedad Andaluza de Endocrinología y Nutrición, and further endorsed by the Sociedad Española de Endocrinol...

Pharmacologic treatment of acromegaly is currently based upon assay-error strategy in which first generation somatostatin analogs (SSA) is the first-line treatment. However, about 50% of patients do no respond adequately to SSA. We aimed to evaluate the potential usefulness of including studies of molecular markers identifying poor response to SSA for prescription of pharmacologic treatment in acromegalic patients in which SSA was prescribed before surgical therapy.<p clas...

Medical treatment of acromegaly is currently performed through a trial-error manner using somatostatin receptor ligands (SRLs) as first-line drugs. Average SRLs response is seen in 50% of cases; subsequent drugs are indicated following clinical judgement. Some biomarkers either before or after surgical failure have been reported to predict SRLs response, including intensity in T2 weighted MRI, short acute octreotide test (sAOT), and different molecules such as SST2 and E-cadhe...

Since the first somatostatin receptor ligand (SRL) was used to treat acromegaly, predicting which patients could benefit from their use has become crucial to avoid months of ineffective treatment for non-responding patients. Although many biomarkers linked to SRL response have been identified, there is no consensus criterion on how to prescribe according to biomarker levels. In this study, we evaluate previously reported biomarkers using more exhaustive and accurate methods th...

We previously described a short version of the acute octreotide test (sAOT) for predicting somatostatin receptor ligands (SRLs) response in patients with acromegaly1. In the present work, we prospectively reassess the sAOT ability to identify SRLs response in patients from the ACROFAST study using the current GH standards and control criteria and we also correlate sAOT values with E-cadherin tumor expression. Methods: Patients from the ACROFAS...