There is one clinical trial.
To investigate gene-environment interactions that may influence susceptibility to respiratory illness in children living in highly polluted areas in California.
The investigators found that variants in GSTM1 (null), GSTP1 (A105G), TNF (- 308), and ICAM-1 (241) were associated with reduced lung function growth, increased asthma occurrence, and increased respiratory illnesses. --- A105G ---