What are the currently trending or advancing research areas in bioinformatics research?
Technically all those papers are before 2013, so it is not answering your question, It is just gives you overview
Current trends in bioinformatics
Integrated Bio-Search: challenges and trends for the integration, search and comprehensive processing of biological information
Evolving research trends in bioinformatics
The growth of bioinformatics
Trends in Bioinformatics
Well, to be fairly unspecific: all of them.