Statement on Reducing the Use of Horseshoe Crab Derived Materials in Required Endotoxin Testing Assays
Amgen is actively engaged in exploring the development and use of scientifically validated alternative testing methods that are acceptable to regulatory authorities and do not compromise patient safety. As part of these efforts, the Company has focused on reducing its use of endotoxin testing assays that rely on horseshoe crab derived materials to reduce the impact on horseshoe crab populations. Amgen has also documented and published its activities in support of biodiversity more broadly and this policy document can be accessed here.
Consistent with its adherence to the principles of Reduction, Refinement, and Replacement ("the 3 Rs") in the required use of animal derived products in research, Amgen has been judicious in its use of endotoxin testing, has lowered its usage over time, and has also implemented technology from a third party supplier (Sparing Technology) that reduces the amount of horseshoe crab derived Limulus Amebocyte Lysate (LAL) to 1/20th of the LAL compared to that of traditional endotoxin testing assays. Amgen's use of this Sparing Technology reduces the impact on horseshoe crab populations that supports biodiversity.
In 2024, Amgen has taken steps related to biodiversity, including steps to reduce horseshoe crab reliance that are focused on progressing activities in support of the replacement of compendial LAL endotoxin testing with a recombinant, non-animal derived, option. Specifically, upon our third-party supplier's deployment of new recombinant factor C technology (rFC technology) that eliminates the use of horseshoe crab derived LAL entirely from its endotoxin testing assays, Amgen promptly commenced feasibility testing of this rFC technology. Also, while awaiting the finalization and endorsement of the U.S. Pharmacopoeia (USP) published industry standard guidelines on the use of rFC technology, Amgen is conducting an internal rFC technology bridging study to determine equivalency of performance of the rFC technology to that of LAL in lab-water testing. Amgen anticipates completing both feasibility testing and bridging studies by the end of fourth quarter 2024.
Based on the anticipated finalization of the USP published industry standard guidelines on rFC by the end of Second Quarter 2025, and assuming positive results from our feasibility testing and bridging studies, Amgen anticipates completion of global validation to enable use of rFC for lab-water testing in 2025 to be in position for the finalization of these USP guidelines and the concurrence of global regulatory authorities. We anticipate site by site implementation of this technology for new product approvals will follow the implementation of rFC for lab-water testing.
Amgen will continue to publish progress reports on these efforts to reduce its reliance on horseshoe crab derived products, until Amgen has completed the transition to the rFC technology for water technology and for new product approvals.