Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 and up

Once-daily dual-release hydrocortisone for adults with congenital adrenal hyperplasia

Official title: Congenital Adrenal Hyperplasia: Innovative Once Daily Dual Release Hydrocortisone Treatment

Run by Federico II University · NCT03760835 · Data updated 2026-11-12

This will test whether a once-daily dual-release hydrocortisone controls hormones, metabolic effects, and quality of life better than conventional multiple-dose glucocorticoids in adults with 21-hydroxylase congenital adrenal hyperplasia.

More Congenital Adrenal Hyperplasia trials

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment150 (estimated)
SponsorFederico II University
Academic / other
Locations1 site (Naples)
StatusRecruiting
StartedAugust 11, 2016
Main results expectedDecember 31, 2026
Study endsDecember 31, 2027
Registry record updatedSeptember 16, 2025
Trial IDNCT03760835 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged over 18 with a confirmed diagnosis of congenital adrenal hyperplasia due to 21-hydroxylase deficiency who are on stable conventional glucocorticoid therapy and willing to change their regimen are ideal candidates.

Probably not a fit

Patients with severe organ dysfunction, active substance abuse, significant psychiatric illness, night shift workers, those needing chronic glucocorticoids for other diseases, on interacting enzyme-inducing drugs, or with known hypersensitivity to the dual-release product are unlikely to benefit or be eligible.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This open, controlled Phase 4 study compares a dual-release hydrocortisone formulation (Plenadren) given once daily with conventional immediate-release glucocorticoid regimens in adults with 21-hydroxylase congenital adrenal hyperplasia. Participants are switched or randomized from their usual therapy and followed for clinical, anthropometric, metabolic, hormonal, bone, reproductive/sexual, psychological, and quality-of-life outcomes as well as treatment compliance. The rationale is that the dual-release formulation better mimics the normal circadian cortisol rhythm and may reduce the adverse metabolic and quality-of-life effects seen with non-physiological dosing. Safety, tolerability, and effects on androgen control are key measured endpoints.

Why it matters

Potential benefit: If successful, once-daily dual-release hydrocortisone could improve hormone control, lower metabolic risk, reduce side effects, and simplify dosing to improve adherence and quality of life.

How similar studies have gone: Dual-release hydrocortisone has shown benefits in other forms of adrenal insufficiency by better mimicking circadian cortisol, but data specifically in adult CAH are limited and this approach remains relatively novel for this condition.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* males and females aged \>18 years;
* established diagnosis of adrenal insufficiency in congenital adrenal hyperplasia due to 21-hydroxylase deficiency;
* stably treated with conventional glucocorticoids, available to change their regimen according to random allocation
* written informed consent/assent to participate in the study in compliance with local regulations.

Exclusion Criteria:

* clinical or laboratory signs of severe cerebral, respiratory, hepatobiliary or pancreatic diseases, renal dysfunction, gastrointestinal emptying, or motility disturbances (i.e. chronic diarrhea), significant psychiatric illnesses;
* history of/or current alcohol and/or drug abuse;
* night shift workers;
* underlying diseases that could necessitate treatment with glucocorticoids;
* therapies with hepatic enzyme induction drugs interfering with glucocorticoid kinetics, or immunosuppressive steroid therapy;
* patients with a documented intolerance/known hypersensitivity to dual release hydrocortisone;
* vulnerable populations, such as elderly, cancer patients, pregnant and lactating women;
* history of non-compliance to medical regimens, or potentially unreliable patients

Where it's running

  • Federico II University
    Naples, Italy
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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  • Atumelnant for adults with classic congenital adrenal hyperplasia

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.