Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : X-chromosome centromere peculiarity;
Inheritance : Isolated cases;
Laboratory abnormalities : Premature centromere division (PCD) of the X chromosome observed in cultured lymphocytes
during metaphase; PCD shows separate and rod-shaped X chromosomes without discernible centromeres; Aneuploidy of the X chromosome;