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Study to Determine Absorption, Metabolism, and Excretion of [14C]-SAR439859, and to Assess Absolute Oral Bioavailability of Amcenestrant (SAR439859), in Healthy Post-menopausal Women

A Phase 1, Open-label, Single Center, One Period, One Sequence Study to Determine Absorption, Metabolism, and Excretion of a Single Oral Dose of Radiolabeled [14C]- SAR439859 and an Assessment of the Absolute Oral Bioavailability Using the Microdosing Technique in Healthy Post-menopausal Women

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04940026
Enrollment
6
Registered
2021-06-25
Start date
2021-06-15
Completion date
2021-08-19
Last updated
2025-09-24

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

Conditions

Breast Cancer, Healthy Volunteers

Brief summary

Primary Objectives: * To assess the excretion balance after oral and IV administration of \[14C\]-SAR439859 * To assess PK of total radioactivity, \[14C\] -SAR439859 and its metabolite (M7) after IV administration of \[14C\]-SAR439859 and, PK of radioactivity, SAR439859 and M7 after oral administration of SAR439859 alone or with \[14C\]-SAR439859 * To assess IV clearance and absolute bioavailability of SAR439859 using microdose of \[14C\]-SAR439859 tracer on top of a single tablet oral dose. * To assess relative bioavailability of SAR439859 given as tablet or solution Secondary objectives: * To collect samples in order to assess metabolic profile in plasma and excreta of SAR439859 after oral administration of \[14C\]-SAR439859 as solution, contribution in plasma of SAR439859 and metabolite relative to total radioactivity and identify metabolites (samples will be analyzed according to metabolic analysis plan and results will be documented in a separate report). * To assess safety and tolerance of SAR439859

Detailed description

Total study duration is 3 to 10 weeks, including a screening period of up to 27 days, treatment period of up to 16 days and a follow-up and end of study of up to 4 weeks.

Interventions

Tablet Oral

DRUG[14C]-SAR439859 microtracer

Solution for infusion Intravenous

DRUG[14C]-SAR439859

Powder for oral solution Oral

Sponsors

Sanofi
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
40 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

Female participants (age between 40 and 75 years old) who are postmenopausal or had post-bilateral surgical oophorectomy not linked to a history of cancer. Participants who are overtly healthy. Body weight within 40.0 and 95.0 kg and body mass index (BMI) within the range 18.0 and 30 kg/m2 (inclusive). Capable of giving signed informed consent.

Exclusion criteria

Subject has clinical signs and symptoms consistent with COVID-19, e.g., fever, dry cough, dyspnea, loss of taste and smell, sore throat, fatigue or confirmed infection by appropriate laboratory test within the last 4 weeks prior to Screening. Subject who had severe course of COVID-19 (i.e., hospitalization, extracorporeal membrane oxygenation, mechanically ventilated). Frequent headaches and/or migraine, recurrent nausea and/or vomiting (for vomiting only: more than twice a month). Blood donation, any volume (usually approximately 500 mL), within 2 months before inclusion. Presence or history of drug hypersensitivity, or allergic disease diagnosed and treated by a physician. History or presence of drug or alcohol abuse (alcohol consumption more than 40 g per day). Smoking regularly more than 5 cigarettes or equivalent per week, unable to stop smoking during the study (occasional smoker can be enrolled). Excessive consumption of beverages containing xanthine bases (more than 5 cups or glasses per day). Subjects who are occupationally exposed to radiation as defined in the Ionizing Radiation Regulations 2017. Participation in a trial with \[13C\] or \[14C\] radiolabeled medication in the 12 months preceding the study. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

Design outcomes

Primary

MeasureTime frameDescription
Relative bioavailability of SAR439859 after oral administrationDay 1 to Day 5, Day 7 to Day 11
Percentage of radioactive dose, SAR439859 and M7 excreted in urine and feces after IV administrationDay 1 to Day 6
Percentage of radioactive dose excreted in urine and feces after oral administrationDay 7 up to max Day 44
Assessment of Pharmacokinetic (PK) parameter: AUC for radioactivity and SAR439859 after IV administrationDay 1 to Day 3Area under the plasma concentration versus time curve extrapolated to infinity
Assessment of PK parameter: t1/2z for radioactivity and SAR439859 after IV administrationDay 1 to Day 3Terminal half-life associated with the terminal slope (λz)
Assessment of PK parameter: CL for SAR439859 after IV administrationDay 1 to Day 3Total body clearance
Assessment of PK parameter: AUC ratios after IV administrationDay 1 to Day 3SAR439859 to radioactivity ratio for plasma AUC
Assessment of PK parameter: Cmax for radioactivity and SAR439859 after oral administrationDay 1 to Day 5, Day 7 to Day 11Maximum plasm concentration observed
Assessment of PK parameter: tmax for radioactivity and SAR439859 after oral administrationDay 1 to Day 5, Day 7 to Day 11Time to reach Cmax
Assessment of PK parameter: AUC for radioactivity and SAR439859 after oral administrationDay 1 to Day 5, Day 7 to Day 11
Assessment of PK parameter: t1/2z for radioactivity and SAR439859 after oral administrationDay 1 to Day 5, Day 7 to Day 11
Assessment of PK parameter: AUC ratios after oral administrationDay 7 to Day 11SAR439859 to radioactivity ratio for plasma AUC
Assessment of PK parameter: Cmax for M7 after IV and oral administrationDay 1 to Day 5, Day 7 to Day 11
Assessment of PK parameter: AUC for M7 after IV and oral administrationDay 1 to Day 5, Day 7 to Day 11
Assessment of PK parameter: t1/2z for M7 after IV and oral administrationDay 1 to Day 5, Day 7 to Day 11
Assessment of PK parameter: Rmet Cmax after IV and oral administrationDay 1 to Day 5, Day 7 to Day 11M7 to SAR439859 ratio for plasma Cmax
Assessment of PK parameter: Rmet AUC after IV and oral administrationDay 1 to Day 5, Day 7 to Day 11M7 to SAR439859 ratio for plasma AUC
Absolute oral bioavailability of SAR439859Day 1 to Day 5, Day 7 to Day 11Absolute oral bioavailability, expressed as a percentage, estimated from AUCs obtained after oral and IV administration

Secondary

MeasureTime frame
Number of participants with adverse eventsDay 1 to Day 44

Countries

United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026