Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Biodistribution & persistence
Excreted in milk of lactating rats
“Tradipitant was excreted in milk of lactating rats that received tradipitant at 100, 300, or 1000 mg/kg (2.3, 2.4, and 3.3 times the exposure to tradipitant at the MRHD) during pregnancy from gestation day 6 through lactation day 20.”