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levoketoconazole

Phase 3FDA approved

Cushing Syndrome | Small molecule | Endocrine |Xeris Biopharma Holdings, Inc.|Trials Updated: Jun 19, 2025

levoketoconazole development status

FDA approval on record Dec 30, 2021 as Recorlev
Approval holderStrongbridge
ApplicationNDA214133
Highest phase Phase 3
Registered trials 5 across 1 sponsor since Apr 2013

Label indication RECORLEV is indicated for the treatment of endogenous hypercortisolemia in adult patients with Cushing’s syndrome for whom surgery is not an option or has not been curative. Limitations of Use RECORLEV is not approved for the treatment of fungal infections. The safety and effectiveness of RECORLEV for the treatment of fungal infections have not been established. FDA label

levoketoconazole target and mechanism

Molecular targetCYP11B2, CYP17A1, CYP11A1, CYP11B1
Target classInhibitor
ModalitySmall molecule

Also known as COR-003

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials3
Total Enrollment229

FDA Designations

No designations recorded

levoketoconazole clinical trials

levoketoconazole · 3 trials · 3 indications

Phase 3 3
NCT03621280Open-label Treatment in Cushing's SyndromeCushing Syndrome
COMPLETED51 Analytics
NCT03277690A Study to Assess the Safety and Efficacy of Levoketoconazole in the Treatment of Endogenous Cushing's Syndrome.Endogenous Cushing's Syndrome
COMPLETED84 Analytics
NCT01838551Treatment for Endogenous Cushing's SyndromeEndogenous Cushing's Syndrome
COMPLETED94 Analytics
PHASE3COMPLETED
Open-label Treatment in Cushing's Syndrome
Cushing SyndromeUnlock trial analytics
PHASE3COMPLETED
A Study to Assess the Safety and Efficacy of Levoketoconazole in the Treatment of Endogenous Cushing's Syndrome.
Endogenous Cushing's SyndromeUnlock trial analytics
PHASE3COMPLETED
Treatment for Endogenous Cushing's Syndrome
Endogenous Cushing's SyndromeUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportions of Participants With Mean Urinary Free Cortisol (mUFC) Categorization Based on Upper Limit of Normal (ULN)
From parent study Baseline to final study visit or up to a maximum of 3 years, whichever comes first.

Proportions of participants with mUFC: 1) Less or equal to the ULN of the reference range, 2) Above the ULN to 1.5x the ULN, and 3) Above 1.5x the ULN.

Number of Subjects With Loss of Therapeutic Response to Levoketoconazole Upon Withdrawing to Placebo Compared With the Proportion of Subjects With Loss of Therapeutic Response Upon Continuing Treatment With Levoketoconazole.
max. 9.5 weeks

Urinary free cortisol (UFC) level measurement: Loss of therapeutic response is inferred based on mUFC from three 24-hour UFC measurements obtained at any visit from second through final Randomized Withdrawal Phase visits (RW1 through RW5 inclusive) when: (1) mUFC is above 1.5X the ULN of the central laboratory's reference range, OR (2) mUFC is more than 40% above the baseline (RW0) value, if the RW0 value is above the ULN (i.e. \>1.0X ULN)1, OR (3) an early rescue criterion is met.

Normalization in Urinary Free Cortisol in Patients With Endogenous Cushing's Syndrome.
6 months of maintenance phase therapy without a prior dose increase during that phase

The response to COR-003 is defined as mean UFC concentration ≤ULN following 6 months of maintenance phase therapy without a prior dose increase during that phase. The proportion of responders at the End of Maintenance Phase visit, following 6 months of treatment in the Maintenance Phase, for all dose groups combined was estimated using a generalized linear model with repeated measurements based on a binomial distribution with a logit link function and with region (US vs. non-US), concurrent CS medical conditions (diabetes \[Yes/No\], hypertension \[Yes/No\]), age (rounded median split based on the ITT population), sex, disease duration (years), prior CS medication (Yes/No), prior radiation therapy (Yes/No) as Baseline covariates and visit as an independent factor. The least squares mean (LSMEAN) estimate of the UFC response after 6 months of treatment in the Maintenance Phase alongside its 95% Wald CI is presented.

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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
LevoketoconazoleEXPERIMENTALLevoketoconazole taken twice daily up to 1200 mg daily
PlaceboPLACEBO_COMPARATORDouble blind withdrawal phase: Placebo; Double blind restoration phase: Placebo plus Levoketoconazole
Levoketoconazole DL0EXPERIMENTALLevoketoconazole Tablets Dose Level 0 Once Daily
Levoketoconazole DL1EXPERIMENTALLevoketoconazole Tablets Dose Level 1 Twice Daily
Levoketoconazole DL2EXPERIMENTALLevoketoconazole Tablets Dose Level 1 Twice Daily
Levoketoconazole DL3EXPERIMENTALLevoketoconazole Tablets Dose Level 3 Twice Daily
Levoketoconazole DL4EXPERIMENTALLevoketoconazole Tablets Dose Level 4 Twice Daily
Levoketoconazole DL5EXPERIMENTALLevoketoconazole Tablets Dose Level 5 Twice Daily
Levoketoconazole DL6EXPERIMENTALLevoketoconazole Tablets Dose Level 6 Twice Daily
Levoketoconazole DL7EXPERIMENTALLevoketoconazole Tablets Dose Level 7 Twice Daily

Interventions

NameTypeDescription
LevoketoconazoleDRUGLevoketoconazole up to 1200 mg daily
PlaceboDRUGDuring the double-blind Withdrawal Phase, patients will receive placebo tablets. During the double-blind Restoration Phase, patients will receive placebo plus levoketoconazole.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites30

Key Inclusion Criteria: 1. Completed the Extended Evaluation Phase of Study COR-2012-01 (i.e. M12) 2. Completed the Restoration Phase of Study COR-2017-01 (i.e. RES2) NOTE: Participants meeting criteria 1 or 2 above who have had a break in therapy may be eligible only after discussion with the ...

Countries:United StatesBulgariaFranceGreeceHungaryIsraelItalyNetherlandsPolandRomaniaSpainDenmarkBelgiumCanadaCzechiaGermanySerbiaTurkey (Türkiye)
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Frequently asked questions about levoketoconazole

What is levoketoconazole used for?

Levoketoconazole is an investigational small molecule being developed for the treatment of Cushing syndrome, including endogenous Cushing's syndrome. It is intended for adults 18 years and older. It is not yet approved and remains in clinical development.

What does levoketoconazole target?

Levoketoconazole is an inhibitor of the CYP11B2, CYP17A1, CYP11A1, and CYP11B1 enzymes. By inhibiting these cytochrome P450 enzymes involved in steroid synthesis, it is designed to reduce cortisol production, which is the goal of treating endogenous Cushing's syndrome.

Who is developing levoketoconazole?

Levoketoconazole is being developed by Xeris Biopharma Holdings, Inc., which trades on the Nasdaq under the ticker XERS. The company is the sponsor of the clinical program evaluating the drug in Cushing syndrome and endogenous Cushing's syndrome.

What phase is levoketoconazole in?

Levoketoconazole is in Phase 3 development. It is investigational and has not been approved by the FDA. The Phase 3 program in Cushing syndrome and endogenous Cushing's syndrome has been completed, with no trials currently active.

What clinical trials is levoketoconazole in?

Three completed Phase 3 trials have evaluated levoketoconazole: NCT03621280 in Cushing syndrome and Cushing disease, NCT03277690 in endogenous Cushing's syndrome, and NCT01838551 in endogenous Cushing's syndrome. Together they enrolled 229 adults across sites in the United States, Europe, Canada, Israel, and Turkey.

Is levoketoconazole the same as ketoconazole?

Levoketoconazole is the levorotatory enantiomer of ketoconazole, meaning it is a single enantiomer rather than the racemic mixture found in ketoconazole. It is being developed as a distinct small molecule product for endogenous Cushing's syndrome.