期刊
JOURNAL OF CLINICAL MEDICINE
卷 10, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/jcm10122580
关键词
complement inhibitors; age-related macular degeneration; AMD; exudation; exudative AMD; wet AMD; C3; C5; Factor D
While therapies exist for exudative AMD, there are currently no approved treatments for non-exudative AMD and GA. The role of complement inhibition in AMD, particularly GA, has been investigated, with mixed results from completed and ongoing clinical trials. Studies evaluating other complement members are ongoing and could provide alternative strategies.
Age-related macular degeneration (AMD) is a leading cause of irreversible blindness among older adults in the Western world. While therapies exist for patients with exudative AMD, there are currently no approved therapies for non-exudative AMD and its advanced form of geographic atrophy (GA). The discovery of genetic variants in complement protein loci with increased susceptibility to AMD has led to the investigation of the role of complement inhibition in AMD with a focus on GA. Here, we review completed and ongoing clinical trials evaluating the safety and efficacy of these studies. Overall, complement inhibition in GA has yielded mixed results. The inhibition of complement factor D has failed pivotal phase 3 trials. Studies of C3 and C5 inhibition meeting their primary endpoint are limited by high rates of discontinuation and withdrawal in the treatment arm and higher risks of conversion to exudative AMD. Studies evaluating other complement members (CFB, CFH, CFI and inhibitors of membrane attack complex-CD59) are ongoing and could offer other viable strategies.
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