[PMID 22276228] Polymorphism in Osteopontin Gene (SPP1) Is Associated with Asthma and Related Phenotypes in a Puerto Rican Population
[PMID 11933203] An osteopontin (SPP1) polymorphism is associated with systemic lupus erythematosus.
[PMID 18335026] Osteopontin and systemic lupus erythematosus association: a probable gene-gender interaction.
[PMID 20713973] Elevated plasma osteopontin level is associated with pelvic inflammatory disease.
[PMID 23692545] OPN gene polymorphism (Ala250) and lower serum OPN levels are associated with urolithiasis.
[PMID 25785266] Roles of Osteopontin Gene Polymorphism (rs1126616), Osteopontin Levels in Urine and Serum, and the Risk of Urolithiasis: A Meta-Analysis