PTEN Research is an independent UK-registered charity dedicated to accelerating global research into PTEN hamartoma tumour syndrome (PHTS). We are dedicated to the development and discovery of treatments for PHTS. We support, fund and facilitate research. We bring together a global network of PHTS-focused experts. We work with clinicians, academics, researchers, biotech & pharma industries developing research and treatments for patients, their families and carers, and society. Registered charity number: 1173589PTEN hamartoma tumour syndrome (PHTS) is a rare genetic disease caused by mutations in the PTEN gene. An individual with a PTEN mutation may be diagnosed as having Cowden Syndrome (CS), Bannayan-Riley-Ruvalcaba Syndrome (BRRS), or Autism Spectrum Disorder (ASD) associated with macrocephaly (large head). Together this spectrum of conditions is known as PHTS.