Background. 15q duplication syndrome (Dup15q) is caused by the presence of an extra maternally derived copy of the Prader-Willi/Angelman critical region (PWACR) within chromosome 15q11. 2-q13. https://lhqscz4krawx.bloginwi.com/68599246/sparks-that-became-a-little-light-over-time-a-qualitative-investigation-of-musicking-as-a-means-of-coping-in-adults-with-ptsd