Clinical utility of telomerase for the diagnosis of malignant well-differentiated endocrine tumours.
Clin Endocrinol (Oxf)
; 64(1): 63-7, 2006 Jan.
Article
en En
| MEDLINE
| ID: mdl-16402930
ABSTRACT
OBJECTIVE:
The distinction between benign and malignant well-differentiated endocrine tumours is hard to achieve. The aim of the present study was to determine whether detection of telomerase or quantification of human telomerase reverse transcriptase protein subunit (hTERT) differ between benign and malignant endocrine tumours. PATIENTS ANDMETHODS:
This retrospective study investigated 31 well-differentiated primary endocrine tumours. Based on clinical and histopathological criteria, tumours were categorized with the most recent WHO classification as 'benign' (n = 14), 'uncertain' (n = 5) or 'malignant' (n = 12) with (n = 7) or without (n = 5) metastasis after a mean follow-up of 40.4 +/- 25.8 months (4-122 months). All these tumours were assayed for telomerase activity and hTERT mRNA expression [real-time quantitative reverse transcriptase-polymerase chain reaction (RT-PCR)].RESULTS:
Telomerase activity was detected in 7 malignant and metastatic tumours, in 1 malignant tumour without metastases, in 1 uncertain tumour and in 1 benign tumour. hTERT mRNA levels were significantly higher in malignant endocrine tumours with or without metastases (P = 0.001) when compared to benign tumours. The negative predictive value of hTERT mRNA quantification for the diagnosis of malignancy was 88.9%, whereas the positive predictive value was 68.7%.CONCLUSION:
The presence of telomerase activity within the primary endocrine tumour might indicate a malignant tumour and might suggest the need for an attentive search for concomitant metastases. Quantification of hTERT mRNA could be used in clinical practice to exclude malignancy in most endocrine tumours.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Biomarcadores de Tumor
/
Neoplasias de las Glándulas Endocrinas
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Telomerasa
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Proteínas de Unión al ADN
/
Pruebas Enzimáticas Clínicas
Tipo de estudio:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adult
/
Aged
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Female
/
Humans
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Male
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Middle aged
Idioma:
En
Revista:
Clin Endocrinol (Oxf)
Año:
2006
Tipo del documento:
Article
País de afiliación:
Francia