1 One form of Stickler syndrome is due to mutation in the COL2A1 gene on chromosome 12 in region 12q13.11-q13.2. It is termed Stickler syndrome, type I and symbolized STL1.  A second form of Stickler syndrome is caused by mutation in the COL11A1 gene on chromosome 1 in region 1p21.
Recent technical advances in this field will give rise to conceptual advances and there is every reason to believe that a new field of cancer genetics is emerging, named here Oncogenetics: a branch of genetics describing the cause of effects of genes causing neoplasia.
Epigenetics is an emerging science focused on how and when particular genes are turned on or off. Diet and exposure to chemicals in the environment, among other factors, can alter a cell's DNA in ways that affect the activity of genes. That can make people more or less susceptible to developing a disease.n other diseases, a genetic variant may occur. A single gene can have many variants. Sometimes, this difference in a gene can cause a disease directly. More often, a variant plays a role in increasing or decreasing a person's risk of developing a disease or condition.