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Studies in a kindred with parathyroid carcinoma
E A Streeten1, L S Weinstein, J A Norton
1Metabolic Diseases Branch, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892.
The Journal of Clinical Endocrinology and Metabolism
|August 1, 1992
Summary
This study investigates a family with hereditary primary hyperparathyroidism and parathyroid cancer, suggesting a novel tumor susceptibility gene may be involved. Further research could uncover genetic factors in endocrine neoplasia.
Area of Science:
- Endocrinology
- Genetics
- Oncology
Background:
- Primary hyperparathyroidism (PHP) can be sporadic or familial.
- Familial PHP is often associated with Multiple Endocrine Neoplasia (MEN) syndromes.
- This study examines a family with apparent autosomal dominant PHP and parathyroid carcinoma (PC).
Observation:
- Four individuals across two generations presented with PHP, with a fifth possibly affected.
- Two patients had confirmed PC, and two had atypical parathyroid adenomas.
- Only one parathyroid gland was abnormal in affected individuals; other glands were normal.
Findings:
- No evidence of neoplasia in other tissues or constitutional karyotype abnormalities.
- Chromosomal abnormalities (translocation, trisomy, inversion) were found in PC tissue.
- No ras gene mutations, PTH gene rearrangement, or 11q13 allelic loss were detected in tumor DNA.
Implications:
- The family exhibits cancer susceptibility without diffuse parathyroid hyperplasia.
- This case may help identify a novel gene predisposing to parathyroid tumors.
- Understanding these genetic factors is crucial for diagnosing and managing hereditary endocrine cancers.