A hospital in south China's Shenzhen announced recently that eight cases of chromosomal abnormal karyotype were discovered and have been included in the database of China human chromosomal abnormal karyotypes. The discovery has not only filled the blank in the research of the medical genetics of the world but is also conducive to clinical diagnosis of genetic diseases and the research on human genes. It has also provided important references for the research on the pathological changes of the chromosome and clinical diagnosis in the future.

As learned the eight cases of human abnormal karyotypes discovered this time, as determined by experts with China National Medical Genetics Laboratory, were the first reported in the world. Among the eight cases, seven are married with symptoms of recurrent miscarriage, sterility, infant death, giving birth to deformed babies etc. A special case goes to a 21-year-old unmarried student. She went to hospital because of secondary amenorrhoea and was found chromosomal abnormal. The karyotype is 46,xx,t (6;7) (q13;p13).

(People's Daily February 17, 2004)