Company: CRNX
Filing Date: 2025-02-27
Form Type: 10-K
Source: 0000950170-25-029050
Chunk: 99

Company: Crinetics Pharmaceuticals, Inc.
Filing Date: 2025-02-27
Form: 10-K
Item: Item 1
Chunk 99
---
THR1, either via PTH or PTH-related peptide (PTHrP, PTHLH) can affect bone metabolism and calcium regulation. Primary hyperparathyroidism arises from a small, benign tumor on one or more of the parathyroid glands, which results in over-secretion of PTH, leading to increased blood calcium levels, or hypercalcemia, increased urine-calcium levels, or hypercalciuria, as well as decreased phosphate levels, or hypophosphatemia. Many patients experience no symptoms. Surgery is indicated in symptomatic patients and asymptomatic patients with target organ involvement to remove the tumor and/or hyperactive gland(s). For patients who decline or cannot undergo surgery, management with medical therapy is recommended. Symptomatic PHPT is characterized by skeletal, renal, cardiovascular, gastrointestinal, neurobehavioral and neuromuscular manifestations with increased mortality. PHPT incidence in the U.S. has been highly influenced by changes in medical practice with the emergence of increased serum calcium and PTH screening and is now estimated to be approximately 200,000 cases.  HHM is caused by over-secretion of PTHrP by a malignant tumor and results in bone resorption and calcium reabsorption in the kidney, leading to hypercalcemia. Patients with HHM typically have advanced-stage cancers, present severely symptomatic and tend to have limited survival of several months. HHM occurs in approximately 20% of all cancer patients during their clinical course. We have identified investigational, orally available nonpeptide PTH antagonists that showed activity and drug-like properties in preclinical models. We have selected a development candidate and are conducting first-in-human enabling activities and plan to file an IND application in 2025.

Thyroid Stimulating Hormone Receptor Antagonist 

We are developing thyroid-stimulating hormone receptor, or TSHR, antagonists for the treatment of Graves’ disease and Thyroid Eye Disease, or TED, or Grave’s orbitopathy. Graves’ disease is an autoimmune condition that affects approximately 1 in 100 people in the United States and 2-3% of the population worldwide. It is characterized by the production of autoantibodies against TSHR, and the pathology of Graves’ disease is driven by these TSHR stimulatory antibodies, or TSAb, that result in heightened activation of TSHR. This overstimulation results in hyperthyroidism due to excessive production of thyroid hormones. Some Graves’ disease patients also develop TED due