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Hepatic Function AbnormalPhase 1NCT05126329

Pharmacokinetics of Amcenestrant in Female Hepatic Impaired Participants as Compared to Participants With Normal Hepatic Function

A Phase 1 study testing amcenestrant in people with Hepatic Function Abnormal, run by Sanofi at 3 sites in 2 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This is a Phase 1, parallel, open-label, 3-arm study to investigate the pharmacokinetic (PK) parameters of amcenestrant in female participants aged 40 to 75 years with mild and moderate hepatic impairment, and in matched participants with normal hepatic function. Read more about this study

Who is it for?
Ages 40 to 75 years, women onlyHealthy volunteers can take part
Conditions the study is for
Hepatic Function Abnormal
What is being tested?
amcenestrant
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
13 participants
Where
3 sitesin 2 countries
Study dates
15 Nov 2021to 16 May 2022
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 75 years
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • For participants with hepatic impairment:
  • Participant must be 40 to 75 years of age, inclusive.
  • Female participants who are postmenopausal or are post-bilateral surgical oophorectomy not linked to a history of cancer. Menopause is defined as being amenorrheic for at least 12 months without an alternative medical cause, with plasma FSH level >30 IU/L or age ≥60 years.
  • Stable chronic liver disease assessed by medical history, physical examination, laboratory values
  • Body weight within the range 50 kg (40 kg for site in South Korea) to 110 kg and body mass index (BMI) within the range 18 to 36 kg/m2, inclusive.
  • For moderate hepatic impairment cohort: Child-Pugh total score ranging from 7 to 9, inclusive.
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  • For mild hepatic impairment cohort: Child-Pugh total score ranging from 5 to 6, inclusive
  • For matched subjects:
  • Participant must be 40 to 75 years of age, inclusive.
  • Female participants who are postmenopausal or are post-bilateral surgical oophorectomy not linked to a history of cancer. Menopause is defined as being amenorrheic for at least 12 months without an alternative medical cause, with plasma FSH level >30 IU/L or age ≥60 years.
  • Certified as healthy by a comprehensive clinical assessment (detailed medical history and complete physical examination).
  • Body weight within the range 50 kg (40 kg for site in South Korea) to 100 kg and body mass index (BMI) within the range 18 to 36 kg/m2, inclusive.

Who cannot join

  • For participants with hepatic impairment:
  • History or presence of drug or alcohol abuse (alcohol consumption more than 40 g per day on a regular basis) within 1 year before inclusion.
  • Smoking regularly more than 15 cigarettes or equivalent per day, unable to refrain from smoking over 8 cigarettes per day during the institutionalization (Smoking is not allowed within 8 hours after amcenestrant administration).
  • Excessive consumption of beverages containing xanthine bases (more than 5 cups or glasses per day).
  • Non-live vaccines including Covid-19: last administration of a vaccine within 1 week (symptoms-free) to 2 weeks before inclusion.
  • Any consumption of citrus fruits (grapefruit, orange, etc) or their juices within 72 hours before inclusion.
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  • Use of any herbal medicines 1 week before IMP administration and up to the end of PK sampling following the IMP administration
  • Live-vaccines: last administration of a vaccine within 4 weeks before inclusion
  • Treatment with a strong CYP3A, CYP2C8 or any UGTs inhibitor within 14 days before first study treatment administration or 5 half-lives whichever is longer.
  • Treatment with a strong or moderate CYP3A, CYP2C8 or any UGTs inducer within 14 days before first study treatment administration or 5 half-lives whichever is longer.
  • Uncontrolled clinically relevant cardiovascular, pulmonary, gastrointestinal, metabolic, hematological, neurological, psychiatric, systemic, ocular, gynecologic, renal, infectious disease, severe hepatic impairment (Child-Pugh total score greater than or equal to 10), or signs of acute illness, hepatocarcinoma, acute hepatitis, Hepatic encephalopathy Grade 2, 3, and 4
  • Esophageal bleeding, which is caused by esophageal varices, within 3 months before inclusion
  • For matched subjects:
  • History or presence of drug or alcohol abuse (alcohol consumption more than 40 g per day on a regular basis) within 1 year before inclusion.
  • Smoking regularly more than 15 cigarettes or equivalent per day, unable to refrain from smoking over 8 cigarettes per day during the institutionalization (Smoking is not allowed within 8 hours after amcenestrant administration).
  • Excessive consumption of beverages containing xanthine bases (more than 5 cups or glasses per day).
  • Any history or presence of clinically relevant cardiovascular, pulmonary, gastrointestinal, hepatic, renal, metabolic, hematological, neurological, osteomuscular, articular, psychiatric, systemic, ocular, gynecologic, or infectious disease, or signs of acute illness, unless the Investigator considers an abnormality to be not clinically significant.
  • Frequent headaches and/or migraine, recurrent nausea and/or vomiting (for vomiting only: more than twice a month.
  • Non-live vaccines including Covid-19: last administration of a vaccine within 1 week (symptoms-free) to 2 weeks before inclusion
  • Live-vaccines: last administration of a vaccine within 4 weeks before inclusion
  • Treatment with a strong CYP3A, CYP2C8 or any UGTs inhibitor within 14 days before first study treatment administration or 5 half-lives whichever is longer.
  • Treatment with a strong or moderate CYP3A, CYP2C8 or any UGTs inducer within 14 days before first study treatment administration or 5 half-lives whichever is longer.
  • Any consumption of citrus fruits (grapefruit, orange, etc) or their juices within 72 hours before inclusion.
  • Use of any herbal medicines 1 week before IMP administration and up to the end of PK sampling following the IMP administration The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial

Trial locations and contacts

3 sites in 2 countries.

3 sites in 2 countries

South Korea2 sites
  • Investigational site number :4100002

    Cheongju-si, 28644

  • Investigational Site Number :4100001

    Seoul, Seoul-teukbyeolsi, 03080

Other trials in South Korea

Germany1 site
  • Investigational Site Number :2760001

    Kiel, 24105

Other trials in Germany

About this study

Official title: An Open-label Pharmacokinetic and Tolerability Study of Amcenestrant Given as a Single Dose in Female Participants With Mild and Moderate Hepatic Impairment, and in Matched Participants With Normal Hepatic Function

This is a Phase 1, parallel, open-label, 3-arm study to investigate the pharmacokinetic (PK) parameters of amcenestrant in female participants aged 40 to 75 years with mild and moderate hepatic impairment, and in matched participants with normal hepatic function.

Read the detailed description

The total study duration from screening period is approximately 41 days.

Being tested
amcenestrant
Medical subject headings
Liver Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • amcenestrantDrug

    tablet for oral use

Study groups in NCT05126329
Study groupRoleWhat they receive
Participants with mild hepatic impairmentExperimentalAmcenestrant 200 mg single dose on Day 1 in fed condition
Receives: Drug: amcenestrant
Participants with moderate hepatic impairmentExperimentalAmcenestrant 200 mg single dose on Day 1 in fed condition
Receives: Drug: amcenestrant
Participants with normal hepatic functionExperimentalAmcenestrant 200 mg single dose on Day 1 in fed condition
Receives: Drug: amcenestrant

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pharmacokinetic (PK) assessment: Maximum plasma concentration observed (Cmax)

    Maximum plasma concentration observed (Cmax) of amcenestrant

    Measured: From Day 1 to Day 5

  2. PK assessment: Area under the plasma concentration (AUC)

    Area under the plasma concentration versus time curve of amcenestrant

    Measured: From Day 1 to Day 5

Secondary outcomes (8)
  1. PK assessment: Tmax of amcenestrant

    Time to reach Cmax of amcenestrant

    Measured: From Day 1 to Day 5

  2. PK assessment: Area under the plasma concentration versus time curve (AUClast) of amcenestrant

    Area under the plasma concentration versus time curve calculated using the trapezoidal method from time zero to the real time tlast of amcenestrant

    Measured: From Day 1 to Day 5

  3. PK assessment: Maximum unbound plasma concentration (Cmax u) of amcenestrant

    Maximum unbound plasma concentration of amcenestrant

    Measured: From Day 1 to Day 5

  4. PK assessment: AUCu of amcenestrant

    Unbound area under the plasma concentration versus time curve extrapolated to infinity of amcenestrant

    Measured: From Day 1 to Day 5

  5. PK assessment: Cmax of M7

    Maximum observed plasma concentration of M7

    Measured: From Day 1 to Day 5

  6. PK assessment: AUClast of M7

    Area under the plasma concentration versus time curve calculated using the trapezoidal method from time zero to the real time tlast of M7

    Measured: From Day 1 to Day 5

  7. PK assessment: AUC of M7

    Area under the plasma concentration versus time curve extrapolated to infinity of M7

    Measured: From Day 1 to Day 5

  8. Number of participants with adverse events (AEs) / treatment-emergent adverse events (TEAEs)

    Incidence of adverse events (AEs) and treatment-emergent adverse events (TEAEs)

    Measured: From the date when the ICF is signed to the end of study (approximately Day 10)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Nov 2021
  2. Study start15 Nov 2021
  3. Primary completion16 May 2022
  4. Study completion16 May 2022

Why it stopped: Sponsor decision to prematurely stop the study, not linked to any safety concern

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
13 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05126329
Sponsor's protocol ID
POP16301
Other IDs
U1111-1244-1929, 2021-001784-24
Status last verified
Sep 2025
First submitted
3 Nov 2021
Last updated
22 Sep 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing amcenestrant in people with Hepatic Function Abnormal, run by Sanofi at 3 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 12 inclusion and 24 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 22 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in South Korea, Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was stopped early (reason given: Sponsor decision to prematurely stop the study, not linked to any safety concern). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pharmacokinetic (PK) assessment: Maximum plasma concentration observed (Cmax) (time frame: From Day 1 to Day 5). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Sep 2025.

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