ITGAM and systemic lupus erythematosus: On the other hand, a third study, which also included Mexican adult SLE patients, identified an association with ITGAM R77H [9]; however, this report included samples that were predominantly of Mexican ancestry either born or living in the USA (373 patients), and 101 more samples of patients from Mexico City, Guadalajara, Culiacan, and Morelia [9].