This is the first reported case of urinary infection due to KPC in a renal transplant recipient cured with C-A. Avibactam is a non-beta-lactam beta-lactamase inhibitor that, in combination with ceftazidime, has demonstrated a bactericide effect in infections by resistant enterobacteriaceae and those caused by Pseudomonas aeruginosa. 1 Studies in animal models have demonstrated that C–A is effective in meningitis, septicaemia, pyelonephritis and pneumonia caused by these strains. Currently, it is in phase 3 trial for the treatment of urinary infections and complicated intraabdominal infections in humans.4 In our case, its administration was for compassionate use, and it was shown to be a safe, effective and well tolerated. Clinical trials are necessary to evaluate the efficacy of C–A, although the preliminary results look promising.