Regeneron Pharmaceuticals’ multiple myeloma drug linvoseltamab has clinical trial results showing complete responses in 90% of patients who have light chain amyloidosis, a rare blood disease. The preliminary data were presented during the annual meeting of the American Society of Clinical Oncology.
Protego Biopharma’s lead program is a potential treatment for the rare disease light chain amyloidosis. The startup says the novel mechanism of its oral small molecule should have better outcomes than antibodies from AstraZeneca and Prothena that failed their respective pivotal studies in the disorder earlier this year.
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Though anselamimab failed its Phase 3 test in light chain amyloidosis, AstraZeneca points to encouraging results in a pre-defined patient subgroup — which may not be a winning strategy. Prothena resurrected its failed drug candidate for the disease based on a subgroup analysis, only to see that antibody fall short in a pivotal study.