HLA-DQA1 and toxoplasmosis: In a congenital study examining 122 foetuses for toxoplasmosis where HLA class II molecules play a crucial role in immunity, HLA-DQA1*01:03 (P-value = 0·0002 [Chi-square test], OR = 3·1) and HLA-DQA1*03:02 (P-value = 0·0001 [Chi-square test], OR = 9·6) were found to be associated with increased susceptibility to congenital toxoplasmosis [40].