Fully revised and updated with the most current information, the  third edition of this practical clinical text covers all aspects of the  rapidly advancing field of preimplantation genetic testing  (PGT). Although PGT has become an established procedure for genetics and  assisted reproduction practices over the last decade, its wider  application has occurred after the introduction of next generation  technologies in the last few years, necessitating this much-needed new  edition. This will include, first of all, an update on PGT accuracy,  reliability and safety, to ensure improved access to PGT for those who  may benefit greatly from this technology. New content will also present  progress in the primary prevention of genetic disorders, which now  discusses approaches for prospective identification of at-risk PGT  couples through the application of the extended gene testing panels.