Cytogenetics in Mental Retardation: An Overview | Chapter 09 | New Horizons in Medicine and Medical Research Vol. 6
It is critical to determine the aetiology of mental retardation in order to limit the risk of recurrence and, in cases where MR is transmissible, to provide prenatal diagnostics and correct genetic counselling. The study emphasises the value of cytogenetic investigations in finding anomalies such as rings and mosaics that may be missed by CMA assays. Mental retardation is described as a lack of mental capacity development and associated behavioural issues. It is the most prevalent neuropsychiatric illness, affecting 2.5-3.0% of the population in all civilised nations. Mental retardation is commonly caused by chromosomal disorders. In the first report from North India, cytogenetic examinations were performed on 143 mentally disturbed persons who were sent to the Guru Nanak Dev University's Centre for Genetic Disorders in Amritsar, India, between 1996 and 2002. These cases were typically referred to as Down syndrome, delayed milestones, mental retardation, and so on. The patients...