Thomas W Hale1, Afzal A Siddiqui, Teresa E Baker. 1. Department of Pediatrics, Texas Tech University School of Medicine, 1400 Coulter, Amarillo, TX 79106, USA. Thomas.Hale@ttuhsc.edu
Abstract
AIM: This study determined the transfer of intramuscular interferon β-1a into human milk and provides an estimate of infant exposure to this antiviral in six women chronically receiving intramuscular interferon β-1a (Avonex(®), Biogen Idec, Research Triangle Park, NC). METHODS: Interferon β-1a was measured at various times at steady state in milk samples collected from women receiving interferon β-1a at 30 μg/week. RESULTS: Average milk concentrations were 46.7, 97.4, 66.4, 77.5, 103.1, 108.3, 124, and 87.9 pg/mL at 0, 1, 4, 8, 12, 24, 48, and 72 hours, respectively, after dosing. Using the highest value measured (179 pg/mL), the estimated relative infant dose would be 0.006% of the maternal dose. CONCLUSIONS: These data clearly suggest that interferon β-1a does not penetrate the milk compartment significantly and that levels in milk are far subclinical. No side effects were noted in any of the breastfed infants.
AIM: This study determined the transfer of intramuscular interferon β-1a into human milk and provides an estimate of infant exposure to this antiviral in six women chronically receiving intramuscular interferon β-1a (Avonex(®), Biogen Idec, Research Triangle Park, NC). METHODS: Interferon β-1a was measured at various times at steady state in milk samples collected from women receiving interferon β-1a at 30 μg/week. RESULTS: Average milk concentrations were 46.7, 97.4, 66.4, 77.5, 103.1, 108.3, 124, and 87.9 pg/mL at 0, 1, 4, 8, 12, 24, 48, and 72 hours, respectively, after dosing. Using the highest value measured (179 pg/mL), the estimated relative infant dose would be 0.006% of the maternal dose. CONCLUSIONS: These data clearly suggest that interferon β-1a does not penetrate the milk compartment significantly and that levels in milk are far subclinical. No side effects were noted in any of the breastfed infants.
Authors: Stanley L Cohan; Barry A Hendin; Anthony T Reder; Kyle Smoot; Robin Avila; Jason P Mendoza; Bianca Weinstock-Guttman Journal: CNS Drugs Date: 2021-07-06 Impact factor: 5.749