Features in HIV genotypes associated with failure in the computational prediction of patients' response to antiretroviral treatment

Autores

  • Rogério Santos Rosa CETENE
  • Ádamo Yesus Brito Silva
  • Viviane Martha Morais LIKA/UFPE
  • Rafael Santos
  • Katia Silva Guimarães UFPE

DOI:

https://doi.org/10.24221/jeap.3.3.2018.2034.319-329

Palavras-chave:

HIV, antiretroviral therapy, drug-resistance, phenotype, computational methods

Resumo

HIV acts by attacking the immune system and gradually destroying the TCD4+ defense cells. Without adequate treatment, the carriers develop the most severe form of the infection, AIDS, when the patient can be afflicted by opportunistic diseases that inevitably lead to death. Fortunately, with the advent of the highly active antiretroviral therapy (HAART), the mortality of people with HIV is decreasing. However, mutations can occur in the genotype of the virus, generating drug-resistant phenotypes. Computational methods have been used to predict whether a given strain is drug-resistant, and to which drugs this resistance occurs, thereby increasing the chances of success of the prescribed treatment regimen. However, these methods are not always accurate in their task. In this context, by applying Feature Selection methods and estimating Decision Tree models, we investigated patterns in Protease and Reverse Transcriptase enzyme sequences, as well as in patients’ clinical data, which can lead to correct or incorrect computational prediction. As a result, we identified 21 features that are highly informative, 11 which tend to lead the methods to error, and eight that present both behaviors simultaneously, being able to predict the patient's response to therapy and at the same time may lead the predictor's methods to failure.

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Biografia do Autor

Rogério Santos Rosa, CETENE

Bacharel em Informática, mestre e doutor em Ciência da Computação, pesquisador em Bioinformática no CETENE

Katia Silva Guimarães, UFPE

Tem Ph.D. em Ciência da Computação pela Universidade de Maryland, USA, e é professora associada do Centro de Informática da UFPE, Brasil. Foi pesquisadora visitante da Georgia Tech, USA, (1998-1999) e pesquisadora especialista do NCBI/NIH, USA, (2005-2007). É especialista em Algoritmos e Complexidade, e nos últimos anos tem desenvolvido Métodos Computacionais para problemas da Biologia Computacional. Coordenou vários projetos na área de Biologia Computacional, entre os quais o Projeto Genoma Nordeste e um projeto de cooperação internacional com a França, tendo orientado mais de uma dezena de dissertações de mestrado e e teses de doutorado nesta área. É autora de vários artigos publicados em periódicos científicos reconhecidos internacionalmente e um capítulo de livro publicado pela Springer, além de vários livros organizados.

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Publicado

2018-07-31

Como Citar

Rosa, R. S., Silva, Ádamo Y. B., Morais, V. M., Santos, R., & Guimarães, K. S. (2018). Features in HIV genotypes associated with failure in the computational prediction of patients’ response to antiretroviral treatment. Journal of Environmental Analysis and Progress, 3(3), 319–329. https://doi.org/10.24221/jeap.3.3.2018.2034.319-329