Tuberous Sclerosis Complex-Varied Presentations in Family Clusters.

Tuberous sclerosis complex (TSC) is a disease of varying presentations characterised by the presence of multiple hamartomas in various organ systems in the body. This is an Autosomal dominant disease with damages in two suppressor genes namely TSC1 and TSC2 located on chromosome 9 (9q34-hamartin) and chromosome 16 (16p13.3-tuberin). It is a lifelong disease with neurological manifestations, for example, epilepsy, mental retardation and autism and major dermatological features like facial fibromas (adenoma sebaceum), periungual fibromas, shagreen patches and hypopigmented macules. Some conditions, for example, autosomal dominant polycystic kidney disease can co-exist with TSC as a result of concurrent deletion of both polycystic kidney disease 1 and TSC2 genes present on chromosome 16p13.3. We present a cluster of three families with TSC having varied presentations.