Determination of Circulating Autotaxin in Patients With GNAS or PTH Abnormalities

Inclusion Criteria

• •Pediatric patients :
• •Children from 10 to 18 years old
• •Patients with Fibrous dysplasia / McCune-Albright syndrome,hypoparathyroïdism, hyperparathyroïdism, or iPPSD, from References Centers for rare diseases (Calcium and phosphate metabolism, constitutional bone diseases) followed at hôpital Femme Mère Enfant (Bron) or at hôpital Bicêtre Paris Saclay (Paris).
• •Patients and parent / holder of parental authority who have been informed of the study and do not object to participate
• •• Adults:
• •Patients \> 18 years old
• •Patients with Fibrous dysplasia / McCune-Albright syndrome, followed in reference center for constitutional bone diseases at hôpital Edouard Herriot (Lyon)
• •Patients who have been informed of the study and do not object to participate