Dr Aaron Jeffries is a Research Fellow working at the University of Exeter Medical School and Exeter Sequencing Service. Aaron obtained an Honours degree in Genetics from Cardiff University and completed his PhD in King’s College London in 2004. Dr Jeffries’ PhD involved mapping and sequencing of t(6;11) translocation associated with schizophrenia like psychosis in a three generation pedigree, leading to the identification of a potential candidate gene explaining the psychosis and the winning publication for the Lilly Molecular Psychiatry award 2003. He also undertook the largest genotype/phenotype study of ring chromosome 22 to date. In April 2017, Dr Jeffries joined the Exeter Sequencing Service to oversee the PacBio sequencer and in July 2019 became head of Exeter Sequencing Service.