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Clinical Trials in the USA / NCT06594068
Recruiting Phase 4

Prospective Registry Investigating Maternal, Infant, and Lactation Outcomes in Anifrolumab Users

NCT06594068 · tracked via the Priya Life Science USA tracker
Sponsor
AstraZeneca
Phase
Phase 4
Started
2026-01-16
Last updated
2026-09-16

Condition(s) studied

Systemic Lupus Erythematosus

Investigational drug(s) / intervention(s)

Anifrolumab →

Anifrolumab: Anifrolumab is a human monoclonal antibody that binds to subunit 1 of the type 1 interferon receptor, which was developed based on the evidence supporting the role of type 1 interferon pathway in SLE (Furie et al., 2017). Clinical trial evidence from TULIP 1, TULIP 2 have showed that monthly intravenous administration of anifrolumab led to a higher percentage of patients with a response, assessed with the British Isles Lupus Assessment Group-based Composite Lupus Assessment, compared with patients receiving placebo (Furie et al., 2019; Morand et al., 2020). The phase II MUSE study showed that administration of anifrolumab resulted in substantially reduced disease activity, measured by the SLE Responder Index, compared to patients receiving placebo (Furie et al., 2017). These data resulted with applications to the FDA and the EMA, leading to approvals in July 2021 and February 2022, for the treatment of adult patients with moderate to severe SLE who are receiving standard therapy.

Study summary

Prospective Registry Investigating Maternal, Infant, and Lactation Outcomes in Anifrolumab Users (PRIMULA Lac) is a Post Marketing Requirements (PMR) study designed to fulfill the FDA post-marketing requirements. The study will collect data about the presence of anifrolumab in human breast milk and serum (maternal and infant) among lactating individuals who are receiving anifrolumab therapeutically via intravenous (IV) or subcutaneous (SC) administration and evaluate exposure and effects on the breastfed infant.

Eligibility

Sex
FEMALE
Min age
18 Years
Max age
130 Years
Healthy volunteers
No
Inclusion Criteria: Maternal: 1. 18 years or older 2. Signed informed consent to participate 3. Diagnosis of moderate/severe SLE 4. Ongoing treatment with anifrolumab 5. Has reached or will reach steady state (\~85 days postpartum, equivalent to at least 3 consecutive previous IV doses or at least 12 previous SC doses during the post-partum period) with anifrolumab by the time of study Day 1 (pre-dose milk collection) 6. Established lactation in the index post-partum period (breastfeeding or pumping for at least 4 weeks at time of Day 1 visit to ensure mature milk production) 7. 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 on Day 1 post IV dose 8. Plans to continue feeding infant breast milk at least throughout the duration of the study and is not weaning 9. Must be exclusively breast milk-feeding their infant (or if not exclusively breast milk-feeding, not providing more than 1 supplemental bottle of formula per day) at the time of enrollment and throughout the study period 10. Agrees to use only lanolin nipple cream during the sampling period Infant: 1. Gestational age at delivery ≥32 weeks 2. Birthweight \> 10th percentile 3. Weight \> 10th percentile at the time of enrollment Exclusion Criteria: Maternal: 1. Received any investigational compound or approved biologic or biosimilar within 30 days or 5 half-lives (whichever is longer) prior to enrollment in the study 2. Diagnosis of lupus nephritis in the last 12 months 3. History of breast implants, breast augmentation, or breast reduction surgery that significantly impacts breastfeeding or collection of milk from 1 or both breasts 4. History of malignancy in the last 10 years 5. History of mastectomy 6. Evidence of mastitis or any other significant active infection at Day 1 (pre-dose) Infant: 1\. Any abnormality noted or clinically significant medical condition, including cardiac, pulmonary, and liver disease, glucose instability, or active infection at the time of screening that, in the opinion of the investigator, may make implementation of the protocol or interpretation of the trial difficult or would put the infant participant at risk by participating in the study

Primary outcome measure(s)

  • Area under the milk concentration-time curve during a dosing interval — Approximately 30 days
    Area under the milk concentration-time curve during a dosing interval is a component used to assess pharmacokinetic (PK) of anifrolumab in milk of lactating individuals. Milk PK parameters of anifrolumab will be derived using non-compartmental analysis methods and will be determined using the concentration-time data for all evaluable participants included in the PK population
  • Area under the milk concentration-time curve from time 0 to last quantifiable concentration — Approximately 30 days
    Area under the milk concentration-time curve from time 0 to last quantifiable concentration is a component used to assess PK of anifrolumab in milk of lactating individuals. Milk PK parameters of anifrolumab will be derived using non-compartmental analysis methods and will be determined using the concentration-time data for all evaluable participants included in the PK population
  • Average milk concentration at steady state — Approximately 30 days
    Average milk concentration at steady state is a component used to assess PK of anifrolumab in milk of lactating individuals. It will be calculated dividing "Area under the milk concentration-time curve during a dosing interval" by the dosing interval for anifrolumab
  • Observed milk concentration at end of dosing interval — Approximately 30 days
    Observed milk concentration at end of dosing interval is a component used to assess PK of anifrolumab in milk of lactating individuals. Milk PK parameters of anifrolumab will be derived using non-compartmental analysis methods and will be determined using data for all evaluable participants included in the PK population
  • Maximum observed milk concentration — Approximately 30 days
    Maximum observed milk concentration is a component used to assess PK of anifrolumab in milk of lactating individuals. Milk PK parameters of anifrolumab will be derived using non-compartmental analysis methods and will be determined using data for all evaluable participants included in the PK population
  • Time of maximum concentration — Approximately 30 days
    Time of maximum concentration is a component used to assess PK of anifrolumab in milk of lactating individuals. Milk PK parameters of anifrolumab will be derived using non-compartmental analysis methods and will be determined using data for all evaluable participants included in the PK population

Trial sites (1)

FacilityCityRegionStatus
Research Site Las Vegas Nevada Recruiting

On this site

📄 Saphnelo (anifrolumab) drug profile →

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Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT06594068 on ClinicalTrials.gov ↗ ← All trials in the USA