期刊
MOLECULAR BIOLOGY AND EVOLUTION
卷 20, 期 12, 页码 2010-2018出版社
OXFORD UNIV PRESS
DOI: 10.1093/molbev/msg215
关键词
serial samples; substitution rate; subtree likelihood; whole-tree likelihood; maximum likelihood
资金
- NIGMS NIH HHS [R01 GM59174, R01-GM60729] Funding Source: Medline
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM059174, R01GM060729] Funding Source: NIH RePORTER
The estimation of evolutionary rates from serially sampled sequences has recently been the focus of several studies. In this paper, we extend these analyzes to allow the estimation of a joint rate of substitution, omega, from several evolving populations from which serial samples are drawn. In the case of viruses evolving in different hosts, therapy may halt replication and therefore the accumulation of substitutions in the population. In such cases, it may be that only a proportion, p, of subjects are nonresponders who have viral populations that continue to evolve. We develop two likelihood-based procedures to jointly estimate p and to, and empirical Bayes' tests of whether an individual should be classified as a responder or nonresponder. An example data set comprising HIV-1 partial envelope sequences from six patients on highly active antiretroviral therapy is analyzed.
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