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A Study of Elenestinib in Healthy Adult Female Participants

A Phase 1, Open-Label Study to Evaluate the Effect of Elenestinib on the Pharmacokinetics of Midazolam and Combined Oral Contraceptives, Levonorgestrel/Ethinyl Estradiol, in Healthy Adult Female Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07388511
Enrollment
20
Registered
2026-02-05
Start date
2026-02-05
Completion date
2026-04-02
Last updated
2026-04-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Participants

Brief summary

The main objectives of this study are to determine the effect of elenestinib on the pharmacokinetic parameters (how the drug is absorbed, distributed, and processed by the body) of midazolam, and to determine the effect of elenestinib on the pharmacokinetic parameters of levonorgestrel/ethinyl estradiol, when given as a combined oral contraceptive. Healthy adult participants will receive midazolam and levonorgestrel/ethinyl estradiol with and without elenestinib and have blood samples taken.

Interventions

Specified dose on specified days

DRUGMidazolam

Specified dose on specified days

Specified dose on specified days

Sponsors

Blueprint Medicines Corporation
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

Key Inclusion Criteria: * Healthy, adult, female, 18-65 years of age, inclusive, at the screening visit that meet either of the following criteria: * Postmenopausal female, defined as amenorrhea for at least 1 year prior to the first dosing and follicle-stimulating hormone (FSH) serum levels consistent with postmenopausal status at the screening visit (note that participants may have had hysterectomy, bilateral salpingectomy, or bilateral tubal ligation). * Female status-post bilateral oophorectomy. * Continuous non-smoker who has not used nicotine- and tobacco-containing products for at least 6 months prior to the first dosing. * BMI ≥ 18.0 and ≤ 35.0 kg/m2 at the screening visit. * Medically healthy with no clinically significant medical history, physical examination, clinical laboratory profiles, vital signs, and electrocardiograms (ECGs), as deemed by the principal investigator (PI) or designee. Key

Exclusion criteria

* History or presence of clinically significant medical or psychiatric condition or disease in the opinion of the PI or designee. * History of any illness that, in the opinion of the PI or designee, might confound the results of the study or poses an additional risk to the participant by their participation in the study. * History or presence of alcohol or drug abuse (except for the occasional use of cannabis products) within the past 1 years prior to the first dosing. * History or presence of cannabis use within the past 3 months prior to the first dosing. * History or presence of hypersensitivity or idiosyncratic reaction to elenestinib, midazolam, combined oral contraceptive (levonorgestrel/ethinyl estradiol), or related compounds. * Unable to refrain from or anticipates the use of: * Any drugs, including prescription and non-prescription medications, herbal remedies, or vitamin supplements beginning 14 days prior to the first dosing. * Any drugs known to be moderate or strong inducers of CYP3A4 enzymes and/or P-gp beginning at least 28 days prior to first dosing. * Any drugs known to increase or decrease levels of SHBG, including any oral, topical, or intravaginal hormone-containing product, within 12 weeks prior to the first dosing. Other protocol-defined inclusion and

Design outcomes

Primary

MeasureTime frame
Area under the concentration-time curve, from time 0 to the last observed non-zero concentration (AUC0-t)Up to 27 days
Area under the concentration-time curve from time 0 extrapolated to infinity (AUC0-inf)Up to 27 days
Percent of AUC0-inf extrapolated (AUC%extrap)Up to 27 days
Maximum observed concentration (Cmax)Up to 27 days
Time to reach Cmax (Tmax)Up to 27 days
Apparent first-order terminal elimination half-life (t1/2)Up to 27 days
Apparent total plasma clearance after oral administration (CL/F)Up to 27 days
Apparent volume of distribution during the terminal elimination phase after oral administration (Vz/F)Up to 27 days

Secondary

MeasureTime frame
Number of participants with treatment-emergent adverse events (TEAEs)From first dose to date of last dose plus 30 days (up to approximately 7 weeks)

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 21, 2026