To our knowledge, no studies have looked into the polymorphism of the genes RASGRP1, NFkB, CHL1, MARCH3, PDGFD, MAST3, EPS15L1, C1QTNF3, CD46, COX18, NEURL1, PPIE, and PTX3 and its relatedness to mastitis in cattle. The gene discussed is MAST3; the disease is mastitis.