A Study Evaluating the Presence and Concentration of BRIUMVI™ (Ublituximab) in Breast Milk

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexFemale
Age18+
SponsorTG Therapeutics, Inc.

About this trial

The primary objective of the lactation study is to characterize the presence and concentration of BRIUMVI™ in breast milk among breastfeeding participants who receive BRIUMVI™ therapeutically for the treatment of relapsing forms of multiple sclerosis (RMS).

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Participant has independently decided to be treated with BRIUMVI™ prior to providing consent to participate in the study

Diagnosis of RMS, to include clinically isolated syndrome (CIS), relapsing-remitting multiple sclerosis (RRMS), and active secondary progressive multiple sclerosis (SPMS)

Willing to breastfeed or pump regularly during the study period to maintain milk supply and exclusively pump breast milk for the 24-hour period of breast milk collection Day 1 post IV dose

Plans to continue feeding infant breast milk at least throughout the duration of the study and is not weaning

Disqualifiers

Any active infection or other condition that would prevent the individual from breastfeeding

History of breast implants, breast augmentation, or breast reduction surgery that significantly impacts breastfeeding or collection of milk from 1 or both breasts

History of mastectomy

Evidence of mastitis or any other significant active infection at Day 1 (pre-dose) that would prevent collection of milk from one or both breasts

Trial population

The study population will include breastfeeding individuals with RMS who are exposed to BRIUMVI™.

Trial design

Design model

Cohort

Time perspective

Prospective

Treatments tested in this trial

  • No intervention

    Other intervention

    No intervention

Treatment groups

16 Participants
are divided into 1 treatment group
Group A: Breast Milk Collection1 intervention

Trial outcomes

Primary outcomes

1

Area Under the Milk Concentration-time Curve from Time 0 to Infinity (AUC0-inf) of BRIUMVI™

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90
2

Area Under the Milk Concentration-time Curve from Time 0 to the Last Measurable Observed Concentration (AUC0-last) of BRIUMVI™

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90
3

Area Under the Milk Concentration-Time Curve from Time 0 to 24 Hours Post-Dose (AUC0-24) of BRIUMVI™

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90
4

Maximum Observed Milk Concentration of BRIUMVI™ (Cmax)

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90

Secondary outcomes

1

Amount Excreted (Ae) of BRIUMVI™ in Milk

Total amount of drug excreted in milk (mg) as: Σ(total drug concentration in each milk collection x milk volume in each milk collection)

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90
2

Fraction of Dose Excreted (Fe) in Milk of BRIUMVI™

Fraction of dose excreted in milk calculated as Ae/Administered dose

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90
3

Infant Dose (ID) of BRIUMVI™

Infant dose = Ʃ drug concentration in each milk collection multiplied by the expressed milk volume in each milk collection.

Time frame
Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and at exit Day 90
4

Relative Infant Dose (RID) of BRIUMVI™

Relative infant dose = infant dose milligrams/kilograms (mg/kg)/ \[Maternal Dose (mg)/Maternal Bodyweight (kg)\] multiplied by 100

Time frame
Predose Day 1 and at multiple timepoints Post-dose Day 1, Day 2, Day 3, Day 7, Day 10, Day 14, Day 28, Day 60 and Day 90

Other outcomes

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