Hope for SWAN children with undiagnosed genetic conditions
They are known as SWANs and every year 6,000 are born across the country.
They have what is called a syndrome without a name - children born with a developmental disorder, but less than half are diagnosed.
It is hoped new technology developed in Cambridge could dramatically increase that rate of diagnosis and with funding from a local investment company it could be rolled out across the NHS by next summer.
Anna Todd reports.