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CompletedNCT06460948Updated May 13, 2026

Identifying Oxytocin Deficiency in Adults With Pituitary Disease

An Early Phase 1 interventional study of Norethindrone Acetate-Ethinyl Estradiol in Arginine Vasopressin Deficiency and Oxytocin Deficiency, sponsored by Elizabeth Austen Lawson. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-13.

Sponsored by Elizabeth Austen Lawson · Early Phase 1, Interventional, and Diagnostic

Phase
Early Phase 1
Study type
Interventional
Enrollment
28
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This is an open-label, pilot study, to characterize oxytocin response to a single dose of oral Estrogen-progestin in patients with arginine-vasopressin deficiency compared to healthy controls. The association between oxytocin levels and measures of psychopathology (i.e., anxiety and depression) and quality of life across groups will be examined. We hypothesize that:

  1. Salivary and blood oxytocin response to Estrogen-progestin will be lower in arginine-vasopressin deficiency compared to healthy control.
  2. Lower salivary and blood oxytocin levels will be associated with more severe symptoms of anxiety, depression, and social emotional difficulties as well as lower quality of life.
02

Conditions studied

  • Arginine Vasopressin Deficiency
  • Oxytocin Deficiency
03

In context

Diabetes Insipidus, Neurogenic

27 studies on the registry are indexed under Diabetes Insipidus, Neurogenic; 12 are open to participants now.

This study's enrollment of 28 is below the median of 42 across 23 interventional studies indexed under Diabetes Insipidus, Neurogenic.

Browse Diabetes Insipidus, Neurogenic studies →

Lead sponsor

Elizabeth Austen Lawson is the lead sponsor of 4 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • AVD Group:

Adults 18-65 years old Arginine-vasopressin deficiency Stable pituitary hormone replacement

  • Healthy Control Group Adults 16-65 years old

Exclusion criteria

Exclusion Criteria for all participants:

  • History of pulmonary embolism, deep vein thrombosis, breast/endometrial cancer, stroke, , myocardial infarction, angina pectoris, or peripheral artery disease
  • Pregnancy or breastfeeding within last 8 weeks
  • Any significant illness or condition that the investigator determines could interfere with study participation, data collection, or safety
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

05

Study design

Phase
Early Phase 1
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
28 participants (actual)

Study arms

  • Experimental
    Arginine-vasopressin deficiency

    Norethindrone Acetate-Ethinyl Estradiol will be given to participants with arginine-vasopressin deficiency

    Drug: Norethindrone Acetate-Ethinyl Estradiol

  • Experimental
    Healthy control

    Norethindrone Acetate-Ethinyl Estradiol will be given to the healthy controls.

    Drug: Norethindrone Acetate-Ethinyl Estradiol

Interventions

  • DrugNorethindrone Acetate-Ethinyl Estradiol

    Estrogen-progestin will be given to participants in both cohorts, arginine-vasopressin deficiency cohort and healthy control cohort.

    Also known as: Estrogen-progestin

06

What researchers measure

Primary outcomes

  1. Change in peripheral oxytocin concentration from 0 to 24 hours

    Change in peripheral oxytocin concentration from 0 to 24 hours

    Time frame: Time points: time 0 min (baseline) and 24 hours

Secondary outcomes

  1. Area under the curve of salivary oxytocin from baseline to 48 hours following Estrogen-progestin administration in patients with arginine-vasopressin deficiency compared to healthy controls

    Difference from baseline to oxytocin peak (blood and saliva) between patients with arginine-vasopressin deficiency compared to healthy controls. Correlation between oxytocin area under the curve and psychopathology and quality of life measures across groups.

    Time frame: From time 0 min (baseline) to 48 hours

07

Study locations

1 site
  • Massachusetts General Hospital
    Boston, Massachusetts 02114, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 13, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06460948
Lead sponsor
Elizabeth Austen Lawson
Responsible party
Elizabeth Austen Lawson (Associate Professor of Medicine, Massachusetts General Hospital) — Sponsor-investigator
First posted
Jun 14, 2024
Start date
Nov 13, 2024
Primary completion
Mar 17, 2026
Completion
Mar 17, 2026
Last update
May 13, 2026

Study contacts

Elizabeth A Lawson, MD
principal investigator · Massachusetts General Hospital

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.

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