Chromogranin A and Hormone Subunits in Thyroid and Adrenal Tumors
Author Information
Author(s): Guignat L, Bidart J M, Nocera M, Comoy E, Schlumberger M, Baudin E
Primary Institution: Institut Gustave-Roussy, Villejuif, France
Hypothesis
The study evaluates the clinical usefulness of chromogranin A and the α-subunit of glycoprotein hormones in neuroendocrine tumors.
Conclusion
Chromogranin A is not recommended for diagnosing medullary thyroid carcinoma but may be useful for monitoring phaeochromocytomas.
Supporting Evidence
- Serum chromogranin A was increased in 27% of medullary thyroid carcinoma patients with elevated calcitonin levels.
- Chromogranin A levels paralleled tumor burden in some phaeochromocytoma patients.
- The α-subunit of glycoprotein hormones was only slightly increased in a few patients.
Takeaway
The study looked at two markers in patients with certain tumors and found one marker isn't helpful for diagnosis but can help track another type of tumor.
Methodology
Specific immunoradiometric assays were used to evaluate the markers in patients.
Participant Demographics
Patients with medullary thyroid carcinoma and phaeochromocytoma.
Digital Object Identifier (DOI)
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