References of "Stubbs, P"
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See detailUn nouveau marqueur tumoral pour le carcinome parathyroïdien? Résultats observés chez 24 patients
Cavalier, Etienne ULg; Daly, Adrian ULg; Betea, Daniela ULg et al

in Annales d'Endocrinologie (2010, September), 71(5), 350-351

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See detailThe Ratio of Parathyroid Hormone as Measured by Third- and Second-Generation Assays as a Marker for Parathyroid Carcinoma.
Cavalier, Etienne ULg; Daly, Adrian ULg; Betea, Daniela ULg et al

in Journal of Clinical Endocrinology and Metabolism (2010), 95

Background: Parathyroid carcinoma (PCa) is a rare disease that can be difficult to differentiate initially from severe benign parathyroid adenoma. PCa oversecrete the amino form of PTH, which is ... [more ▼]

Background: Parathyroid carcinoma (PCa) is a rare disease that can be difficult to differentiate initially from severe benign parathyroid adenoma. PCa oversecrete the amino form of PTH, which is recognized by third-generation but not by second-generation PTH immunoassays. In normal individuals, the third-generation to second-generation PTH ratio should be less than 1. Objective: Our objective was to study the utility of the third-generation to second-generation PTH ratio as a means of distinguishing PCa patients (n = 24) from control groups with and without disorders of calcium secretion, including patients on renal hemodialysis (n = 74), postrenal transplantation (n = 60), and primary hyperparathyroidism (PHP; n = 30). Setting and Design: We conducted a retrospective, laboratory-based study at tertiary referral academic centers. Results: The mean third-generation to second-generation ratio was 0.58 ± 0.10 in the dialysis patients, 0.54 ± 0.10 in the renal transplant group, 0.54 ± 0.12 in the elderly healthy patients, and 0.68 ± 0.11 in the PHP group. All 245 of these patients presented a PTH third-generation to second-generation ratio of less than 1. In contrast, we observed an inverted third-generation to second-generation PTH ratio of more than one in 20 PCa patients, whereas only four PCa patients had a normal ratio of less than 1. Conclusions: An inverted third-generation to second-generation PTH ratio occurred in the majority of patients with advanced PCa and was absent in all 245 relevant controls. A third-generation to second-generation PTH ratio higher than 1 had a sensitivity of 83.3% and a specificity of 100% among PHP patients as a marker for PCa. This ratio may be useful to identify patients with PCa earlier and to detect patients either at risk of developing PCa or those in whom recurrence is taking place. [less ▲]

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See detailThe ratio of PTH as measured by third and second generation assays as a marker for parathyroid carcinoma
Cavalier, Etienne ULg; Daly, Adrian ULg; Chapelle, Jean-Paul ULg et al

in 12th European Congress of Endocrinology - ICE 2010 (2010)

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