The 4th edition of Human Molecular Genetics maintains the rigour and depth of previous editions and has added key concepts at the start of each chapter and annotated further reading at the end of each chapter to help readers navigate the mass of information available. The text has&been restructured so genomic technologies are integrated into the text.&A new section&that concentrates on genetic testing, screening, and disease models has been added, and&information on stem cells, cell senescence/immortalization, cell signalling, epigenetics, studying gene function, and model organisms&expanded. It remains an invaluable resource to upper level undergraduates, graduates,&instructors, and&researchers.