Dr. Harry Leitch

Dr Harry Leitch is the Lead Genetic Consultant at Jeen Health and also supports patients at London Pregnancy Clinic, with a specialist focus on reproductive genetics, fertility-related genetic testing, and family planning. He works closely with individuals and couples to help them understand genetic risks and make informed decisions about reproduction and long-term family health.

Dr Leitch is an Associate Professor and Honorary Consultant in Clinical Genetics and Genomic Medicine at Great Ormond Street Hospital and the UCL Great Ormond Street Institute of Child Health. In this role, he specialises in paediatric rare disease genetics, reproductive genetics, genetic test interpretation, and family follow-up testing, combining advanced genomic insight with compassionate, patient-centred care.

Alongside his clinical work, Dr Leitch leads internationally recognised academic research focused on human germline development, infertility genetics, and early developmental disorders. Using advanced stem-cell and genomic models, his research bridges cutting-edge science with real-world clinical application, ensuring patients benefit from the latest developments in genetic and genomic medicine.