Pituitary & hypothalamus

Bone turnover in arginine vasopressin deficiency: a comparative study with primary polydipsia and healthy controls

J Clin Endocrinol MetabPublished Secondary analysis of the URANOS prospective trial

Primary result · CTXResult — go to the resultAdjusted difference −0.183 95% CI −0.352 to −0.013

Authors' conclusion

Patients with AVP-D showed reduced CTX levels and consequently an increased P1NP/CTX ratio compared to HC, whereas no difference was observed between patients with PP and both groups. Overall, these findings do not support major bone metabolic alterations with detrimental effects in AVP-D.

Study context

Population
Patients with AVP deficiency (AVP-D), primary polydipsia (PP) and healthy controls (HC), excluding chronic steroid therapy, prior osteoporotic fractures, long-term antiresorptive treatment or bone-affecting medications; June 2023 to June 2024
Participants
46 patients
Comparison
AVP-D vs PP vs HC
  • AVP-Dn = 11
  • PPn = 13
  • HCn = 22reference
Primary endpoint
Bone turnover markers (CTX, P1NP)
Methodological detailscomparative, Conducted June 2023 to June 2024
  • Comparative
  • Conducted June 2023 to June 2024

Primary result

CTX

Adjusted difference

−0.183

95% CI −0.352 to −0.013

P = 0.036

By group

AVP-Dvs HC
adjusted difference −0.183 (95% CI −0.352 to −0.013); P = 0.036

As reported in the abstract

Further findings

OutcomeP value
P1NP/CTX ratio (bone formation index)AVP-D vs HC · higher with AVP-DP = 0.036
25OH-vitamin DAVP-D vs HC · lower with AVP-DP = 0.031

P1NP/CTX ratio (bone formation index)

No difference between PP and either group

Serum calcium, phosphate and P1NP

Comparable across groups

Original publication

Bone turnover in arginine vasopressin deficiency: a comparative study with primary polydipsia and healthy controls. J Clin Endocrinol Metab. Published 7 January 2026. doi:10.1210/clinem/dgag001

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.