Bacillus Calmette–Guérin (BCG) is employed to prevent tuberculosis (TB) during childhood. We reported the proteome of our vaccine candidate BCGΔBCG1419c and its parental BCG Pasteur ATCC 35734 strains, when cultured either as mature biofilms in Sauton medium or as planktonic cells in 7H9 OADC Tween 80 medium. Here, we perform in silico analyses aiming to determine: (1) proteins differentially produced in biofilm compared with planktonic cultures, either in BCGΔBCG1419c or its parental strain, an