This gene encodes a cytoplasmic enzyme in the trans-sulfuration pathway that converts cystathione derived from methionine into cysteine. Glutathione synthesis in the liver is dependent upon the availability of cysteine. Mutations in this gene cause cystathioninuria. Alternative splicing of this gene results in three transcript variants encoding different isoforms. [provided by RefSeq, Jun 2010]
Forensic Context
A study in a Chinese Han population demonstrated that the insertion allele of the indel polymorphism rs113044851 within the 3′UTR of the CTH gene is significantly associated with a decreased risk of sudden cardiac death (SCD) [Zhou et al. DOI:10.1016/J.Legalmed.2020.101736].