期刊
ENDOCRINE
卷 75, 期 1, 页码 23-32出版社
SPRINGER
DOI: 10.1007/s12020-021-02927-3
关键词
Hyperparathyroidism; Hypercalcaemia; Familial hypocalciuric hypercalcaemia (FHH); Genetic testing; Next generation sequencing (NGS)
In patients with suspected hyperparathyroidism syndromes, the positive genetic testing rate ranges from 15-26%. Testing for variants in genes associated with PHPT (MEN1, CDC73, RET, CDKN1B, GCM2, CASR) and/or FHH (CASR, GNA11, AP2S1) is recommended based on specific testing criteria met. Pre- and post-test counseling should be provided for patients, including consideration of potential implications for family members.
Purpose The improved access and affordability of next generation sequencing has facilitated the clinical use of gene panel testing to test concurrently patients for multiple heritable hyperparathyroidism syndromes. However, there is little guidance as to which patients should be selected for gene panel testing and which genes should be included in such panels. In this review, we provide a practical approach to considering, interpreting and managing genetic testing for familial primary hyperparathyroidism (PHPT) syndromes and familial hypocalciuric hypercalcaemia (FHH) in patients with PTH-dependent hypercalcaemia. We discuss known genes implicated in PHPT and FHH, testing criteria and yields, pre-test counselling, laboratory considerations, and post-test management. Methods In addition to reviewing the literature, we conducted audits of local genetic testing data to examine the real-world yield of genetic testing in patients with PTH-dependent hypercalcaemia. Results Our local audits revealed a positive genetic testing rate of 15-26% in patients with suspected hyperparathyroidism syndromes. Conclusion Based on the particular testing criteria met, affected patients should be tested for variants in the genes currently implicated in PHPT (MEN1, CDC73, RET, CDKN1B, GCM2, CASR) and/or FHH (CASR, GNA11, AP2S1). Patients should be provided with pre- and post-test counselling, including consideration of potential implications for family members.
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