“…At the time of this writing, more than 300 entities are in clinical development, with this number set to double in the near future. So far, one peptide-based allosteric modulator, etelcalcetide (Parsabiv), has been approved for clinical use against secondary hyperparathyroidism in patients with chronic kidney disease . Other peptide-based allosteric modulators have been discovered through screening efforts or by the mimicry of endogenous peptides or protein domains .…”