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Marcus Claesson


After a BSc in Chemical Engineering and MSc in Bioinformatics at Chalmers University of Technology in Gothenburg, Marcus completed his PhD at University College Cork (UCC) sequencing and comparing commensal Lactobacillus species. This was followed by postdoctoral fellowships mining probiotic bacteria and analysing the microbiomes of older people as part of the ELDERMET project. Marcus is now an Associate Professor in Bioinformatics and Principal Investigator at APC Microbiome Ireland, UCC, where his main research interests in the role of microbiota in inflammatory bowel disease, and methods development for various 'omics' technologies. He is also coordinating the MSc programme in Bioinformatics and Computational Biology, and lectures on the subject to MSc, Microbiology and Genetics students. In 2020, Marcus co-founded SeqBiome Ltd, a spin-out company providing high-quality microbiome analysis for industry and academia, for which he is also the CEO.

Research Interests

Theme: Host Microbe Dialogue 


Research key words: Inflammatory bowel disease, Microbiome, Machine Learning, Bioinformatics





APC Microbiome Ireland, Biosciences Building, University College Cork, Ireland,