ClinicalTrials.gg
CompletedNCT04045145Updated Jul 18, 2024Results posted

Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of NBI-74788 (Crinecerfont) in Pediatric Participants With Congenital Adrenal Hyperplasia

A Phase 2 interventional study of Crinecerfont in CAH - Congenital Adrenal Hyperplasia, sponsored by Neurocrine Biosciences. Completed at 6 sites in United States. Open to participants aged 14 Years to 17 Years. Per ClinicalTrials.gov, last updated 2024-07-18.

Sponsored by Neurocrine Biosciences · Phase 2, Interventional, and Treatment

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Phase
Phase 2
Study type
Interventional
Enrollment
8
Allocation
Not applicable
Ages
14 Years to 17 Years
Sex
All
01

Where this study stands

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

Among 16 studies in Adrenal Hyperplasia, Congenital by Neurocrine Biosciences — 2 open to participants now, 5 under way, 2 of them phase 3. Adrenal Hyperplasia, Congenital · Neurocrine Biosciences.

Enrollment
13th of 16
8 · median 24
Started
2019
the only one that year
Phase 2
6 of 16
2 open now
Registered
10th of 16
by date

Among the 16 studies in Adrenal Hyperplasia, Congenital by Neurocrine Biosciences, this one is the 13th largest by enrollment, is the only one that started in 2019, is one of 6 in phase 2, and was the 10th 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

2 of the 16 studies in Adrenal Hyperplasia, Congenital by Neurocrine Biosciences are open now, in 1 country. Recruiting first, the newest first:

By country, each count listing its studies:

All 2 open studies →

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: 14 Years to 17 Years · all sexes · no healthy volunteers.

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02

Study summary

This is a Phase 2, open-label, multiple-dose, study to assess the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of NBI-74788 (crinecerfont) in pediatric participants (14 to 17 years of age) with a documented medical diagnosis of classic 21-hydroxylase deficiency congenital adrenal hyperplasia (CAH).

03

Conditions studied

  • CAH - Congenital Adrenal Hyperplasia
04

Who can participate

Ages eligible
14 Years to 17 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

  1. Be in good general health.
  2. Have a medically confirmed diagnosis of classic 21-hydroxylase deficiency CAH.
  3. Be on a stable regimen of steroidal treatment for CAH that is expected to remain stable throughout the study.
  4. Participants of must be instructed on the proper use of barrier methods of and agree to use hormonal or two forms of nonhormonal contraception (dual contraception) consistently from screening until the final study visit or a prespecified window after the last dose of study drug, whichever is longer.
  5. Participants of childbearing potential must have a negative pregnancy test at screening and negative urine pregnancy test at baseline.
  6. Have a negative urine drug (for illegal drugs) and alcohol breath test at screening and baseline.
  7. Be willing and able to adhere to the study regimen and study procedures described in the protocol and /assent form, including all requirements at the study center and return for the follow-up visit.

Exclusion criteria

Exclusion Criteria:

  1. Have a unstable medical condition or chronic disease, or .
  2. Had a medically significant illness within 30 days of screening.
  3. Have a known or suspected differential diagnosis of any of the other known forms of classic CAH.
  4. Have a history that includes bilateral adrenalectomy, hypopituitarism, or other condition requiring daily therapy with orally administered .
  5. Are pregnant or lactating females.
  6. Have a history of epilepsy or serious head injury.
  7. Have a known history of long syndrome or cardiac tachy-arrhythmia.
  8. Have to any corticotropin releasing hormone antagonists.
  9. Test positive at screening for , , or (HIV), or have a history of a positive result.
  10. Have a recent history of alcohol or drug abuse, or current evidence of substance dependence or abuse criteria.
  11. Used any anticoagulants or antiplatelet therapies within 30 days before screening.
  12. Have an active bleeding disorder.
  13. Used any other drug within 30 days before initial screening, or plans to use an investigational drug (other than the study drug) during the study.
  14. Have a blood loss ≥250 mL or donated blood within 56 days or donated plasma within 7 days before baseline.
Terms in these criteria, in plain language(12)

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.

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.

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.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

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

Study arms

  • Experimental
    Crinecerfont 50 milligrams (mg) Twice Daily (BID)

    Crinecerfont administered orally for 14 consecutive days.

    Drug: Crinecerfont

Interventions

  • Crinecerfont administered orally for 14 consecutive days.

    Also known as: NBI-74788

06

What researchers measure

Primary outcomes

  1. Percent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (Morning Window Average)

    Percent changes in 17-OHP were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The 2 samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

    Time frame: Baseline, Day 14

Secondary outcomes

  1. Percent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (24-hour Period)

    Percent changes in 17-OHP were assessed through the collection of samples for a 24-hour period prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The average of each participant's serial sampling values at each visit where serial sampling was performed was calculated and used to determine the percent change from baseline.

    Time frame: Baseline, Day 14

  2. Percent Change From Baseline to Day 14 in Adrenocorticotropic Hormone (ACTH) (Morning Window Averages)

    Percent changes in ACTH were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

    Time frame: Baseline, Day 14

  3. Percent Change From Baseline to Day 14 in Androstenedione (Morning Window Averages)

    Percent changes in androstenedione were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

    Time frame: Baseline, Day 14

  4. Percent Change From Baseline to Day 14 in Testosterone (Morning Window Averages)

    Percent change in testosterone were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

    Time frame: Baseline, Day 14

07

Results

Posted Jul 18, 2024

Participant flow

Participant flow — Overall Study
MilestoneCrinecerfont 50 mg BID
Started8
Received at least 1 dose of study drug8
Completed8
Not completed0

Outcome measures

PrimaryPercent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (Morning Window Average)

Percent changes in 17-OHP were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The 2 samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

Time frame:
Baseline, Day 14
Reported as:
Median · percent change
Percent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (Morning Window Average)
percent changeCrinecerfont 50 mg
Percent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (Morning Window Average)-69.48 (-89.20 to -23.05)
SecondaryPercent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (24-hour Period)

Percent changes in 17-OHP were assessed through the collection of samples for a 24-hour period prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The average of each participant's serial sampling values at each visit where serial sampling was performed was calculated and used to determine the percent change from baseline.

Time frame:
Baseline, Day 14
Reported as:
Median · percent change
Percent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (24-hour Period)
percent changeCrinecerfont 50 mg
Percent Change From Baseline to Day 14 in Serum 17-OHP Concentrations (24-hour Period)-76.0 (-82.34 to -29.74)
SecondaryPercent Change From Baseline to Day 14 in Adrenocorticotropic Hormone (ACTH) (Morning Window Averages)

Percent changes in ACTH were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

Time frame:
Baseline, Day 14
Reported as:
Median · percent change
Percent Change From Baseline to Day 14 in Adrenocorticotropic Hormone (ACTH) (Morning Window Averages)
percent changeCrinecerfont 50 mg
Percent Change From Baseline to Day 14 in Adrenocorticotropic Hormone (ACTH) (Morning Window Averages)-57.12 (-70.08 to -28.45)
SecondaryPercent Change From Baseline to Day 14 in Androstenedione (Morning Window Averages)

Percent changes in androstenedione were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

Time frame:
Baseline, Day 14
Reported as:
Median · percent change
Percent Change From Baseline to Day 14 in Androstenedione (Morning Window Averages)
percent changeCrinecerfont 50 mg
Percent Change From Baseline to Day 14 in Androstenedione (Morning Window Averages)-58.27 (-82.22 to -11.99)
SecondaryPercent Change From Baseline to Day 14 in Testosterone (Morning Window Averages)

Percent change in testosterone were assessed through the collection of samples from 0700 hours to 1000 hours (morning window) both prior to study drug administration (i.e., baseline) and after 14 days of study drug dosing. The samples collected during this morning window at each visit were averaged and used to determine the percent change from baseline.

Time frame:
Baseline, Day 14
Reported as:
Median · percent change
Percent Change From Baseline to Day 14 in Testosterone (Morning Window Averages)
percent changeCrinecerfont 50 mg
Female-76.18 (-83.53 to -28.57)
Male1.39 (-2.67 to 49.55)

Adverse events

Collected over Day 1 (after dosing) up to Day 35. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Crinecerfont 50 mg0/8 (0%)0/8 (0%)6/8 (75%)
Most frequent other events
Showing 10 of 11
Most frequent other events
EventCrinecerfont 50 mg
HeadacheNervous system disorders2/8
Arthropod stingInjury, poisoning and procedural complications1/8
BlepharospasmEye disorders1/8
Dermatitis contactSkin and subcutaneous tissue disorders1/8
DizzinessNervous system disorders1/8
Frequent bowel movementsGastrointestinal disorders1/8
GastritisGastrointestinal disorders1/8
MyalgiaMusculoskeletal and connective tissue disorders1/8
NasopharyngitisInfections and infestations1/8
PyrexiaGeneral disorders1/8

Baseline characteristics

All participants who received at least 1 dose of study drug.

Age, Continuous
Age, Continuous(years)Crinecerfont 50 BID
Mean15.0 ± 0.9
Sex: Female, Male
Sex: Female, Male(Participants)Crinecerfont 50 BID
Female5
Male3
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Crinecerfont 50 BID
Hispanic or Latino1
Not Hispanic or Latino7
Unknown or Not Reported0
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Crinecerfont 50 BID
Asian1
White7
17-hydroxyprogesterone (OHP) (Morning Window Average)
17-hydroxyprogesterone (OHP) (Morning Window Average)(nanograms/deciliter (ng/dL))Crinecerfont 50 BID
Median7703.74 (3344.01 to 10467.50)
17-OHP (24-Hour Average)
17-OHP (24-Hour Average)(ng/dL)Crinecerfont 50 BID
Median2739.74 (1264.84 to 5114.45)
Androstenedione Morning Window Average)
Androstenedione Morning Window Average)(ng/dL)Crinecerfont 50 BID
Median367.88 (207.45 to 600.73)
Adrenocorticotropic hormone (ACTH) (Morning Window Average)
Adrenocorticotropic hormone (ACTH) (Morning Window Average)(picograms/milliliter (pg/mL))Crinecerfont 50 BID
Median226.23 (37.48 to 414.73)

1 further baseline measures are reported on the registry.

08

Study locations

6 sites
  • Neurocrine Clinical Site
    San Diego, California 92123, United States
  • Neurocrine Clinical Site
    Aurora, Colorado 80045, United States
  • Neurocrine Clinical Site
    Ann Arbor, Michigan 48109, United States
  • Neurocrine Clinical Site
    Minneapolis, Minnesota 55454, United States
  • Neurocrine Clinical Site
    Philadelphia, Pennsylvania 19104, United States
  • Neurocrine Clinical Site
    Seattle, Washington 98105, United States
09

References and documents

Publications

  • Newfield RS, Sarafoglou K, Fechner PY, Nokoff NJ, Auchus RJ, Vogiatzi MG, Jeha GS, Giri N, Roberts E, Sturgeon J, Chan JL, Farber RH. Crinecerfont, a CRF1 Receptor Antagonist, Lowers Adrenal Androgens in Adolescents With Congenital Adrenal Hyperplasia. J Clin Endocrinol Metab. 2023 Oct 18;108(11):2871-2878. doi: 10.1210/clinem/dgad270. PubMed 37216921 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2019 to primary completion in Jul 2021, 18 months.

Results were first posted in Jul 2024, 3 years after primary completion. A results delay was requested in Jun 2022.

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

Registered
Jul 31, 2019
First posted
Aug 5, 2019
StartActual
Dec 12, 2019
Primary completionActual
Jul 2, 2021
CompletionActual
Jul 2, 2021
Results delay requested
Jun 20, 2022
Results first posted
Jul 18, 2024
Last update
Jul 18, 2024
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 Jul 18, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04045145
Responsible party
Sponsor
First posted
Aug 5, 2019
Start date
Dec 12, 2019
Primary completion
Jul 2, 2021
Completion
Jul 2, 2021
Results posted
Jul 18, 2024
Last update
Jul 18, 2024

Oversight

Data monitoring committee
Yes
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 Jul 2024. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Crinecerfont

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