Sarcosinemia, also known as sarcosine dehydrogenase complex deficiency, is related to osteoporosis and bone mineral density quantitative trait locus 8. An important gene associated with Sarcosinemia is SARDH (Sarcosine Dehydrogenase), and among its related pathways/superpathways are One-carbon metabolism and related pathways and superpathway of choline degradation to L-serine. Affiliated tissues include liver and bone, and related phenotypes are hypersarcosinemia and hypersarcosinuria