CCL2 and tuberculosis: Numerous studies have been performed on the association of genetic variants with TB susceptibility [4], [6], [7], [8], [9] and among them, the monocyte chemoattractant protein-1 (MCP-1) gene has been highlighted [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20].