Hypercalcemia, defined as elevated calcium levels in the blood, affects about 1%-2% of the population and has various etiologies, including primary hyperparathyroidism, malignancy, and granulomatous diseases [1]. The regulation of calcium homeostasis is intricately linked to parathyroid hormone (PTH), which is secreted by the parathyroid glands. The gene discussed is PTH; the disease is Hypercalcemia.