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RE104 Clinical Lactation Study

A Phase 1, Open-label, Single Dose Study to Evaluate the Concentration of RE104 and Its Major Metabolites in Breast Milk and Plasma of Healthy Lactating Women.

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06659263
Enrollment
14
Registered
2024-10-26
Start date
2024-11-13
Completion date
2025-06-04
Last updated
2025-06-12

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

Conditions

Lactation

Brief summary

The purpose of this study is to obtain data necessary to characterize the elimination of RE104 and metabolites from breastmilk of health lactating volunteers to support a regulatory assessment of when mothers can safely return to breastfeeding following a single-dose of RE104 for Injection.

Interventions

Single, subcutaneous dose of RE104 for Injection

Sponsors

Reunion Neuroscience Inc
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Females between 18 and 45 years of age, at least 50 kgs, and a body mass index of 18-34 kg/m2 * Has been breastfeeding or actively pumping for at least 4 weeks postpartum * Agrees to cease breastfeeding for duration of study (Day 14) and confirms infant is able to feed from a bottle at screening. * Willing and able to pump in order to maintain sufficient milk supply volumes for the study * Is not pregnant or planning to become pregnant during the study * Able to understand and adhere to study schedule and requirements and willing to sign an ICF * In good general health as determined by medical history, clinical laboratory test results, vital sign measurements, 12-lead ECG results, and physical examination findings at screening

Exclusion criteria

* Has mastitis or other condition that would prevent the collection of milk from one or both breasts * Active or medical history of significant mental disorder (including but not necessarily limited to major depression and anxiety disorders, bipolar disorder, schizophrenia, schizoaffective disorder, psychotic disorder and/or borderline personality disorder), or first-degree family history of psychosis or bipolar disorder * Medically significant condition or other concomitant condition or history rendering unsuitability for the study, in the judgement of the investigator * Has used or intends to use of prohibited medications * Has a known sensitivity or intolerance to hallucinogenic or psychedelic substances, or potential rescue medications

Design outcomes

Primary

MeasureTime frame
Total RID of RE104 and its active entity 4-OH-DiPTThrough 168 hours postdose
Area under the concentration-time curve from time zero to 24 hours post-dose (AUC0 24) for RE104 and 4-OH-DiPT in plasma and breast milkThrough 24 hours postdose
Area under the concentration-time curve from time zero to the time of the last quantifiable concentration (AUClast) for RE104 and 4-OH-DiPT in plasma and breast milkThrough 168 hours postdose
Maximum observed concentration (Cmax) for RE104 and 4-OH-DiPT in plasma and breast milkThrough 168 hours postdose
Time to reach Cmax (tmax) for RE104 and 4-OH-DiPT in plasma and breast milkThrough 168 hours postdose
Apparent total body clearance (CL/F) for RE104 in plasmaThrough 168 hours postdose
Apparent volume of distribution during the terminal phase (Vz/F) for RE104 in plasmaThrough 168 hours postdose
Apparent terminal elimination half-life (t1/2) for RE104 and 4-OH-DiPT in plasmaThrough 168 hours postdose
Milk to plasma (M/P) ratio for RE104 and 4-OH-DiPT in breast milkThrough 168 hours postdose
Relative infant dose (RID) of RE104 and its active entity 4-OH-DiPTThrough 72 hours postdose

Secondary

MeasureTime frameDescription
Area under the concentration-time curve from time zero to 24 hours post-dose (AUC0 24) for detectable/quantifiable RE104 metabolites in plasma and breast milkThrough 24 hours postdose
Area under the concentration-time curve from time zero to the time of the last quantifiable concentration (AUClast) for detectable/quantifiable RE104 metabolites in plasma and breast milkThrough 168 hours postdose
Maximum observed concentration (Cmax) for detectable/quantifiable RE104 metabolites in plasma and breast milkThrough 168 hours postdose
Time to reach Cmax (tmax) for detectable/quantifiable RE104 metabolites in plasma and breast milkThrough 168 hours postdose
Apparent terminal elimination half-life (t1/2) for detectable/quantifiable RE104 metabolites in plasmaThrough 168 hours postdose
Milk to plasma (M/P) ratio for detectable/quantifiable RE104 metabolites in breast milkThrough 168 hours postdose
Amount of RE104 and its active entity 4 OH-DiPT excreted into breast milk (Ae) and amount of drug excreted into breast milk relative to dose (Fe)Through 168 hours postdose
Unbound and bound plasma concentrations of the RE104 active entity 4-OH-DiPT.1, 3 and 8 hours post-dose
Incidence of treatment-emergent adverse events (TEAEs) by frequency, severity and seriousness.From dosing through study completion (post-dose follow-up is for 14 days)A treatment-emergent adverse event (TEAE) is defined as any unfavorable and unintended sign, symptom or disease temporally associated with the use of a study drug.

Countries

United States

Outcome results

None listed

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