Prenatal detection of de novo inversion of chromosome 9 with duplicated heterochromatic region and postnatal follow-up

We report the first de novo case of a heterochromatic duplication on the long arm of the chromosome 9, which then was pericentrically inverted at p11q13. This condition was detected prenatally and carry to term. We then performed the follow up for over 1 year. So far, there seems to be no phenotypical abnormalities.