This list is created to bring together families and professionals to share information, stories and ideas about duplications of chromosome 15q. These duplications most commonly occur in one of two forms which collectively can be grouped under the umbrella of the dup(15) syndrome diagnosis. These include an extra isodicentric 15 chromosome, abbreviated idic(15), or an interstitial duplication 15. More information on idic(15) and int dup(15) can be found at www.idic15.org. We are here to make friends, support each other and help do our best for the ones that we love.