ClinicalTrials.gg
CompletedNCT00519818Updated Apr 26, 2022Results posted

Comparison of Two Forms of Hydrocortisone in Patients With Congenital Adrenal Hyperplasia

A Phase 1/2 interventional study of Chronocort and Cortef in Congenital Adrenal Hyperplasia, 21-Hydroxylase Deficiency and Adrenogenital Syndrome, sponsored by Neurocrine UK Limited. Completed at 1 site in United States. Open to participants aged 16 Years to 60 Years. Per ClinicalTrials.gov, last updated 2022-04-26.

Sponsored by Neurocrine UK Limited (formerly part of Neurocrine Biosciences) · Phase 1/2, Interventional, and Treatment

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Phase
Phase 1/2
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
16 Years to 60 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 17 studies testing hydrocortisone in Adrenal Hyperplasia, Congenital — 1 open to participants now, 1 under way, none of them phase 3. Hydrocortisone · Adrenal Hyperplasia, Congenital.

Enrollment
10th of 17
20 · median 28
Started
2007
with 1 other
Phase 1/2
2 of 17
none open now
Registered
2nd of 17
by date
Lead sponsor
8 of 17
Neurocrine UK Limited

Among the 17 studies testing hydrocortisone in Adrenal Hyperplasia, Congenital, this one is the 10th largest by enrollment, is one of 2 that started in 2007, is one of 2 in phase 1/2, and was the 2nd registered.

Adrenal Hyperplasia, Congenital

101 studies on the registry are indexed under Adrenal Hyperplasia, Congenital; 28 are open to participants now.

Browse Adrenal Hyperplasia, Congenital studies →

Open to participants now

1 of the 17 studies testing hydrocortisone in Adrenal Hyperplasia, Congenital is open now, in 1 country. Recruiting first, the newest first:

By country, each count listing its studies:

About hydrocortisone

Hydrocortisone: first FDA approval 1951 (HYDROCORTONE), first EMA approval 2011. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 20 Adrenal Hyperplasia, Congenital studies recruiting now, 10 (50%) set no upper age limit and 9 (45%) stop at 75 or younger; 7 take children under 18; none take healthy volunteers.

This study: 16 Years to 60 Years · all sexes · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 17 studies testing hydrocortisone in Adrenal Hyperplasia, Congenital, or all of them as a file.
02

Study summary

This study will test a new, extended release form of hydrocortisone called Chronocort in patients with congenital adrenal hyperplasia (CAH). People with CAH do not make enough of the adrenal hormones cortisol and aldosterone, and their adrenal glands make too much of the sex hormone androgen. Medicines called glucocorticoids (hydrocortisone, dexamethasone and prednisone) are currently used to treat CAH, but finding the best dose of these drugs that effectively lowers androgens without causing undesirable side effects, such as weight gain and slow growth rate in children, is often difficult to achieve.

Adolescents and adults with CAH due to 21-hydroxylase deficiency may be eligible for this study. Children 16 years of age and older are eligible with confirmation by bone age that they are no longer growing.

Participants undergo the following tests and procedures during two inpatient visits one month apart at the NIH Clinical Center:

  • Medical history and physical examination.
  • Medications: Following 7 days of Cortef (standard drug treatment for CAH), patients begin taking Chronocort on day 3 of hospitalization and continue the tablets once a day for 1 month.
  • Blood tests: A catheter (plastic tube) is inserted in a vein and left in place for frequent blood draws in order to avoid repeated needlesticks. Blood is drawn for chemistries, blood count, pregnancy test in women, and for serial tests (up to 26 samples in a 24-hour period) to measure hormone levels.
  • 24-hour urine test.
  • Height and weight measurements.

Between the two hospitalizations, patients are contacted by NIH weekly to check for possible side effects from Chronocort. Two weeks after the first visit, patients also will have blood drawn by their regular doctor or a local clinic. A few days before the second hospitalization, patients undergo a 20-minute telephone questionnaire about energy level and well being.

About 30 days after discharge from the second hospitalization, patients are followed up with a telephone call to see how they are doing.

Read the detailed description

Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency is a disease of the adrenal cortex characterized by cortisol deficiency with or without aldosterone deficiency, and androgen excess. The severe or classic form occurs in 1 in 15,000 births worldwide, while the mild non-classic form is a common cause of hyperandrogenism. The discovery of glucocorticoid therapy as a treatment for CAH occurred in the 1950's resulting in patients with classic CAH surviving to live a normal lifespan. However, existing treatment is suboptimal and many unresolved clinical problems exist. Standard hormone replacement often fails to normalize the growth and development of children with CAH, and adults may experience iatrogenic Cushing syndrome, hyperandrogenism, infertility or the development of the metabolic syndrome. Chronocort, a newly-developed formulation of hydrocortisone, results in a slow release of hydrocortisone that is designed to mimic the normal cortisol circadian rhythm. This new medical strategy, physiologic cortisol replacement, offers the prospect of an improved outcome of treatment. Chronocort has been safely given to healthy adult males in pharmacokinetic studies. This first ever study in patients with CAH is a pharmacokinetic/pharmacodynamic study comparing Chronocort to Cortef, the conventional immediate-release form of hydrocortisone.

03

Conditions studied

  • Congenital Adrenal Hyperplasia
  • 21-Hydroxylase Deficiency
  • Adrenogenital Syndrome

Keywords

  • Congenital Adrenal Hyperplasia
  • Hydrocortisone
  • Pharmacokinetic
  • Pharmacodynamic
04

Who can participate

Ages eligible
16 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

Satisfactory pre-trial screening

Provision of signed written and written assent from patients less than 18 years old, as applicable.

Good general health.

Females of must have a negative pregnancy test initially and at all visits. Females who are engaging in sexual intercourse must be using medically acceptable method of .

Exclusion criteria

EXCLUSION CRITERIA:

Co-morbid condition requiring daily administration of a medication that induces hepatic enzymes or interferes with the metabolism of .

Clinical or biochemical evidence of hepatic or renal disease. Creatinine above the normal range or elevated liver function tests (Transaminases greater than 1.5 the ).

Females who are pregnant or lactating.

Patients with any other significant medical or psychiatric conditions that in the opinion of the Investigator would preclude participation in the trial.

Participation in another clinical trial of an or licensed drug or device within 3 months prior to inclusion in this study.

Terms in these criteria, in plain language(6)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    Cortef and Chronocort

    Cortef 3 times daily(total dose 30 mg)for minimum of 7 days followed by Chronocort 30 mg once daily nigh time dose for 28 +/- 3 days duration

    Drug: Chronocort · Drug: Cortef

Interventions

  • Chronocort 30 mg once daily nigh time dose for 28 +/- 3 days duration

    Also known as: Hydrocortisone modified release tablet treatment

  • DrugCortef

    Cortef 3 times daily(total dose 30 mg)for minimum of 7 days

    Also known as: Hydrocortisone immediate release tablet

06

What researchers measure

Primary outcomes

  1. Chronocort vs. Cortef Cortisol Concentrations (AUC Over 24 Hours - Time Points 0,.5,1,1.5,2,3,4,5,6,7,8,10,10.5,11, 11.5,12,13,15,17,17.5,18,18.5,19,20,22,24 Post Dose).

    Time frame: Cortef after one week, Chronocort after one month

Secondary outcomes

  1. 17 Hydroxyprogesterone at 08.00 Hours

    Time frame: Cortef after one week compared with Chronocort after one month

07

Results

Posted Aug 27, 2014

Participant flow

Participant flow — Overall Study
MilestoneCortef Then Chronocort
Started14
Completed14
Not completed0

Outcome measures

PrimaryChronocort vs. Cortef Cortisol Concentrations (AUC Over 24 Hours - Time Points 0,.5,1,1.5,2,3,4,5,6,7,8,10,10.5,11, 11.5,12,13,15,17,17.5,18,18.5,19,20,22,24 Post Dose).
Time frame:
Cortef after one week, Chronocort after one month
Reported as:
Mean · h*nmol/l
Chronocort vs. Cortef Cortisol Concentrations (AUC Over 24 Hours - Time Points 0,.5,1,1.5,2,3,4,5,6,7,8,10,10.5,11, 11.5,12,13,15,17,17.5,18,18.5,19,20,22,24 Post Dose).
h*nmol/lCortefChronocort
Chronocort vs. Cortef Cortisol Concentrations (AUC Over 24 Hours - Time Points 0,.5,1,1.5,2,3,4,5,6,7,8,10,10.5,11, 11.5,12,13,15,17,17.5,18,18.5,19,20,22,24 Post Dose).5380 ± 4143973 ± 166
Secondary17 Hydroxyprogesterone at 08.00 Hours
Time frame:
Cortef after one week compared with Chronocort after one month
Reported as:
Mean · nmol/l
17 Hydroxyprogesterone at 08.00 Hours
nmol/lCortefChronocort
17 Hydroxyprogesterone at 08.00 Hours16.4 ± 27.986.9 ± 181.7

Adverse events

Collected over Adverse events for each subject were followed for 1 week in Cortef, 4 weeks on Chronocort and 4 weeks follow-up.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Chronocort—0/14 (0%)4/14 (28.6%)
Cortef—0/14 (0%)3/14 (21.4%)
Most frequent other events
Most frequent other events
EventChronocortCortef
HeadacheNervous system disorders4/143/14

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Cortef Then Chronocort
<=18 years0
Between 18 and 65 years14
>=65 years0
Age, Continuous
Age, Continuous(years)Cortef Then Chronocort
Mean26.8 ± 3.8
Sex: Female, Male
Sex: Female, Male(Participants)Cortef Then Chronocort
Female7
Male7
Region of Enrollment
Region of Enrollment(participants)Cortef Then Chronocort
United States14
08

Study locations

1 site
  • National Institutes of Health Clinical Center, 9000 Rockville Pike
    Bethesda, Maryland 20892, United States
09

References and documents

Publications

  • Therrell BL. Newborn screening for congenital adrenal hyperplasia. Endocrinol Metab Clin North Am. 2001 Mar;30(1):15-30. doi: 10.1016/s0889-8529(08)70017-3. PubMed 11344933 ↗
  • Merke DP, Bornstein SR. Congenital adrenal hyperplasia. Lancet. 2005 Jun 18-24;365(9477):2125-36. doi: 10.1016/S0140-6736(05)66736-0. PubMed 15964450 ↗
  • Krieger DT, Allen W, Rizzo F, Krieger HP. Characterization of the normal temporal pattern of plasma corticosteroid levels. J Clin Endocrinol Metab. 1971 Feb;32(2):266-84. doi: 10.1210/jcem-32-2-266. No abstract available. PubMed 4321505 ↗
10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2007, a primary completion of May 2009 and a completion of May 2009. It does not say whether these dates are actual or estimated.

Results were first posted in Aug 2014, 5 years 3 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 22, 2007
First posted
Aug 23, 2007
Start
Aug 2007
Primary completionActual
May 2009
CompletionActual
May 2009
Results first posted
Aug 27, 2014
Last update
Apr 26, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 26, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00519818
Responsible party
Sponsor
First posted
Aug 23, 2007
Start date
Aug 2007
Primary completion
May 2009
Completion
May 2009
Results posted
Aug 27, 2014
Last update
Apr 26, 2022

Study contacts

Deborah Merck, MD
principal investigator · National Institutes of Health (NIH)

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2022. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Hydrocortisone

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