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      pkCSM: Predicting Small-Molecule Pharmacokinetic and Toxicity Properties Using Graph-Based Signatures

      rapid-communication

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          Abstract

          Drug development has a high attrition rate, with poor pharmacokinetic and safety properties a significant hurdle. Computational approaches may help minimize these risks. We have developed a novel approach (pkCSM) which uses graph-based signatures to develop predictive models of central ADMET properties for drug development. pkCSM performs as well or better than current methods. A freely accessible web server ( http://structure.bioc.cam.ac.uk/pkcsm), which retains no information submitted to it, provides an integrated platform to rapidly evaluate pharmacokinetic and toxicity properties.

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          Most cited references38

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          The meaning and use of the area under a receiver operating characteristic (ROC) curve.

          A representation and interpretation of the area under a receiver operating characteristic (ROC) curve obtained by the "rating" method, or by mathematical predictions based on patient characteristics, is presented. It is shown that in such a setting the area represents the probability that a randomly chosen diseased subject is (correctly) rated or ranked with greater suspicion than a randomly chosen non-diseased subject. Moreover, this probability of a correct ranking is the same quantity that is estimated by the already well-studied nonparametric Wilcoxon statistic. These two relationships are exploited to (a) provide rapid closed-form expressions for the approximate magnitude of the sampling variability, i.e., standard error that one uses to accompany the area under a smoothed ROC curve, (b) guide in determining the size of the sample required to provide a sufficiently reliable estimate of this area, and (c) determine how large sample sizes should be to ensure that one can statistically detect differences in the accuracy of diagnostic techniques.
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            Is Open Access

            DUET: a server for predicting effects of mutations on protein stability using an integrated computational approach

            Cancer genome and other sequencing initiatives are generating extensive data on non-synonymous single nucleotide polymorphisms (nsSNPs) in human and other genomes. In order to understand the impacts of nsSNPs on the structure and function of the proteome, as well as to guide protein engineering, accurate in silicomethodologies are required to study and predict their effects on protein stability. Despite the diversity of available computational methods in the literature, none has proven accurate and dependable on its own under all scenarios where mutation analysis is required. Here we present DUET, a web server for an integrated computational approach to study missense mutations in proteins. DUET consolidates two complementary approaches (mCSM and SDM) in a consensus prediction, obtained by combining the results of the separate methods in an optimized predictor using Support Vector Machines (SVM). We demonstrate that the proposed method improves overall accuracy of the predictions in comparison with either method individually and performs as well as or better than similar methods. The DUET web server is freely and openly available at http://structure.bioc.cam.ac.uk/duet.
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              Physiochemical drug properties associated with in vivo toxicological outcomes.

              Relationships between physicochemical drug properties and toxicity were inferred from a data set consisting of animal in vivo toleration (IVT) studies on 245 preclinical Pfizer compounds; an increased likelihood of toxic events was found for less polar, more lipophilic compounds. This trend held across a wide range of types of toxicity and across a broad swath of chemical space.
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                Author and article information

                Journal
                J Med Chem
                J. Med. Chem
                jm
                jmcmar
                Journal of Medicinal Chemistry
                American Chemical Society
                0022-2623
                1520-4804
                10 April 2015
                14 May 2015
                : 58
                : 9
                : 4066-4072
                Affiliations
                []Department of Biochemistry, University of Cambridge , 80 Tennis Court Road, Sanger Building, Cambridge, Cambridgshire CB2 1GA, U.K.
                []Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz , Belo Horizonte 30190-002, Brazil
                Author notes
                [* ]For D.E.V.P.: phone, +44 1223766033; fax, +44 1223766002; E-mail, douglas.pires@ 123456cpqrr.fiocruz.br .
                [* ]For D.B.A.: phone, +44 1223766033; fax, +44 1223766002; E-mail, dascher@ 123456svi.edu.au .
                Article
                10.1021/acs.jmedchem.5b00104
                4434528
                25860834
                7eed35fd-a794-4b07-abea-46bbd00fb34f
                Copyright © 2015 American Chemical Society

                This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.

                History
                : 20 January 2015
                Categories
                Brief Article
                Custom metadata
                jm5b00104
                jm-2015-00104e

                Pharmaceutical chemistry
                Pharmaceutical chemistry

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