A pericentric inversion of chromosome 9 and a rearrangement involving chromosomes 9 and 10, observed in two generations. Clinical description of chromosome 9 (p12‐p21) deletion syndrome

The clinical picture associated with a deletion of a central part of the short arm of chromosome no. 9 is described in two siblings. The clinical signs differ from those described in deletion of the terminal part of the short arm. Pericentric inversion of chromosome no. 9, combined with a rearrangement involving chromosomes 9 and 10, was found in the mother and the maternal grandmother of the propositus.