We are raising money for PKS UK, a charity which supports medical research into the very rare Pallister-Killian syndrome. Pallister-Killian Mosaic Syndrome or PKS happens randomly. PKS is a chromosome abnormality when a tetrasomy of the short arm of chromosome 12 (12p) occurs for no known reason. PKS is a unique, diverse syndrome that raises a lot of questions about care, symptoms and conditions. Individuals affected by PKS often have some or all of the following characteristics: - Low muscle tone - Hypopigmentation of the skin - Cognitive and developmental delays - Diaphragmatic hernias - Seizures - Speech delay or absence - Hearing and/or sight impairment