FOI Ref: FOI/2022/4694
You asked
Please supply figures for those currently diagnosed with the chromosome variation XXY, this is people born with an extra X sex chromosome ie XXY.
Research papers suggest the UK figure is approximately 4800 diagnosed (2019) but we need official proof of the actual numbers.
We said
Thank you for your request.
Unfortunately, we do not hold data regarding the diagnosis of Klinefelter's Syndrome.
NHS Digital may be better placed to answer your enquiry, they can be contacted on enquiries@nhsdigital.nhs.uk.