期刊
ANTIBIOTICS-BASEL
卷 11, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/antibiotics11101340
关键词
bacteriophage; clinical trial; efficacy; phage therapy; safety; systematic review
资金
- University of Edinburgh/Medical Research Council Confidence in Concept Grant [MC_PC_18046]
Trials of phage therapy have not consistently shown efficacy, possibly due to the failure to deliver a sufficient dose of the right phage to the right location to treat infections.
Trials of phage therapy have not consistently reported efficacy. This contrasts with promising efficacy rates from a sizeable and compelling body of observational literature. This systematic review explores the reasons why many phage trials have not demonstrated efficacy. Four electronic databases were systematically searched for safety and/or efficacy trials of phage therapy. Sixteen trials of phage therapy were included, in which 378 patients received phage. These were divided into historical (pre-2000; N = 3; n = 76) and modern (post-2000; N = 13; n = 302) trials. All 13 modern trials concluded that phage therapy was safe. Six of the 13 modern trials were exclusively safety trials. Seven modern trials investigated both safety and efficacy; efficacy was observed in two. Two of three historical trials did not comment on safety, while adverse effects in the third likely reflected the use of phage preparations contaminated with bacterial debris. None of the historical trials contained evidence of efficacy. The evidence from trials is that phage therapy is safe. For efficacy to be observed a therapeutic amount of the right phage(s) must be delivered to the right place to treat infections containing enough susceptible bacterial cells. Trials that have not demonstrated efficacy have not fulfilled one or more elements of this principle.
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