Management of primary hyperparathyroidism
There was a need to update the previous 2014 guidelines developed at the Fourth International Workshop on the Management of Primary Hyperparathyroidism because, among other things, recent studies have provided new evidence about the different clinical phenotypes of primary hyperparathyroidism and ways the disease affects the skeleton and kidneys, Dr. Bilezikian, from the College of Physicians and Surgeons, Columbia University, New York, explained.
The experts in hyperparathyroidism were divided into four task forces that covered epidemiology, pathophysiology and genetics; classical and nonclassical disease manifestations; surgical aspects; and patient evaluation and management.
As part of these topics, the experts reviewed biochemical, skeletal, and renal findings, nonclassical features (such as neurocognitive complaints), nutritional and pharmacologic approaches, and disease course with or without surgical or medical intervention.
They made recommendations for diagnosis of hypercalcemic and normocalcemic phenotypes, differential diagnosis, evaluation of the skeleton and the kidney, indications for surgery, role of parathyroid imaging, indications for pharmacologic intervention, and monitoring.
“Consider the way this disease has appeared to change in the last 50 years,” said Dr. Bilezikian. In the 1940s, 50s, and 60s, patients with hyperparathyroidism were really sick and had severe bone disease and kidney disease. Then in the 70s, 80s, and 90s, the disease was more often discovered because of a screening test; high serum calcium was a hallmark of finding asymptomatic hyperparathyroidism.
In recent years, hyperparathyroidism is often discovered incidentally, when examining the skeleton or kidneys, he continued.
Primary hyperparathyroidism can now be subdivided into three types: patients who have target organ (kidney, bone) involvement, patients who don’t have this, and patients who have normocalcemic primary hyperparathyroidism.
The guideline discusses new medications that have become available for hyperparathyroidism, as well as surgery (the only cure), including how preoperative imaging can identify the overactive parathyroid gland, and the guidelines go into detail about how to monitor a patient and why a clinician would or would not recommend surgery, Dr. Bilezikian explained.
In the end, treatment is tailored to the individual.
Last, the guideline identifies eight areas where more research is needed.
The guidelines were funded by unrestricted educational grants from Amolyt, Ascendis, Calcilytix, and Takeda. Dr. Khan has reported participating on advisory boards for Alexion, Amgen, Amolyt, and Takeda, being a consultant for Amgen, receiving grants from Alexion, Amgen, Takeda, and Ascendis, being an investigator for Alexion, Amgen, Takeda, Ascendis, and Chugai, and being a speaker for Alexion, Amgen, Takeda, and Ultragenyx. Dr. Bilezikian has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.