What is known about the passage of glecaprevir + pibrentasvir into breast milk?

For glecaprevir + pibrentasvir, human milk excretion is unknown, but both enter animal milk; risk to the suckling child cannot be excluded, so a decision must be made whether to discontinue breastfeeding or discontinue/abstain from therapy, weighing breastfeeding benefits for the child against therapy benefits for the woman.