A Balanced Translocation t (2:18) (p23:q23) in the Family

It has been estimated that chromosomal abnormality occurs in 0.4% of live births. A balanced translocation between chromosome 2 and 18, t (2;18) (p23;q23), is extremely rare. We report a neonate whose karyotype was 46, XY t (2;18) (p23;q23). He had multiple anomalies such as micrognathia, low-set ears, short neck, undescended testes, atrial septal defect, and decreased physical activity. Chromosomal analysis with G banding in high resolution showed a balanced translocation t (2;18) (p23;q23). The same chromosomal abnormality was found on the family for 3 generations.