Pediatrics Familial hypocalciuric hypercalcemia has mild elevation of calcium and PTH levels. It occurs secondary to what mutation? A Missense mutation of mitochondrial calcium receptor B Missense mutation of ribosomal calcium surface protein C Missense mutation of Golgi complex receptor D Mutation of calcium - sensing receptor(CaSR) 💡 Explanation Familial hypocalciuric hypercalcemia has mild elevation of calcium and PTH levels. It occurs secondary to what mutation? ✓ Correct Answer: D. Mutation of calcium - sensing receptor(CaSR)