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Welcome to Guy's and St Thomas' Centre for Preimplantation Genetic Diagnosis

Pre-implantation genetic diagnosis: the who, the what, the why and the how

We are based at Guy's Hospital, which is part of Guy's and St Thomas' NHS Foundation Trust. We are the leading experts in the field of fertility and Preimplantation Genetic Diagnosis (PGD), with an international reputation for excellence.

We expect that you will already know much about the condition in your family and how it is inherited, so this website focuses on:

Many of the words used in this website may be new to you, so there is a glossary in the frequently asked questions (FAQ) section to explain any words you might not understand.

Our 'firsts' 
November 2013  500th baby
January 2011 First 100 frozen PGD cycles
December 2010 100th chromosome rearrangement baby delivered
August 2010 Completed 1,000 fresh PGD cycles
March 2010 First three-way translocation baby delivered
December 2007  50th Guy's chromosome rearrangement baby delivered
July 2000 First UK reciprocal translocation baby delivered
April 2000 First 13/14 Robertsonian translocation baby delivered
March 2000 First 14/21 Robertsonian translocation baby delivered

PGD leaflet

We are currently working on a new PGD leaflet. If you would like to find out more, please email PGDGenetics@gstt.nhs.uk.