Table 1. Summary of TB association genetic studies of NRAMP1/SLC11A1, including TB diagnostic criteria, characterization of controls, and whether there was an association with any SNP in the gene.
Population (Reference) | TB Diagnostic Criteria | Characterization of Controls | Association? |
Gambia [80] | Smear + | Healthy blood donors | Yes |
Gambia [81] | Smear + | Healthy blood donors | |
Malawi [82] | Smear + OR culture + OR histology | Unrelated with no history of infectious disease | Yes |
Morocco [37] | Culture + | Healthy family members | |
Tanzania [83] | Culture + | Blood donors | Yes |
Guinea [36] | Microscopy (smear +? Culture +?) | Unaffected relatives | |
South Africa [32] | Smear + OR culture + | Unrelated healthy | Yes |
Caucasian and African American [26] | Culture + OR past diagnosis | Household members in close contact | Yes |
Caucasian [84] | Culture + OR response to TB treatment | Clinic patients without infectious disease | Yes |
Caucasian, African American, and Asian [27] | Culture + | Tuberculin skin test positive | |
Cambodia [85] | Smear + | Hospital/clinic patients | Yes |
China [86] | Smear + OR culture + OR symptoms and radiological evidence; males only | Unrelated healthy males | Yes |
Japan [87] | Smear + OR culture + | No history of TB disease | Yes |
Japan [88] | Smear + | Random clinic patients | Yes |
Taiwanese [89] | Culture + | Clinic patients without pulmonary disease | |
Japan [90] | Smear + | Healthy blood donors without history of pulmonary or inflammatory disease | |
Thai [91] | Culture + | Healthy blood bank donors | |
China [92] | Culture + | Hospital patients and healthy blood donors | Yes |
Korea [93] | Culture + (unclear) | No history of TB disease | Yes |
Japan [94] | Smear + OR culture + | Unrelated healthy | |
Poland [38] | Culture + | TST negative |
Smear + refers to AFB smear positive. “Culture +” could include more stringent definitions such as culture positive, smear positive, and radiological evidence consistent with TB.
This table is limited to studies published in English so that case and control definitions could be determined. It is also limited to studies of pulmonary TB in all age groups.