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. 2022 Mar 24;10(2):e00084-22. doi: 10.1128/spectrum.00084-22

TABLE 4.

Combined effect of deficiency of CirA and other types of carbapenemases on cefiderocol resistance

Strain Description MIC (mg/L)a
D3+pCR2.1_NDM1 D3 transformed with pCR2.1_NDM1 4
D3+pCR2.1_KPC2 D3 transformed with pCR2.1_KPC2 2
D3+pCR2.1_IMP4 D3 transformed with pCR2.1_IMP4 0.5
D3+pCR2.1_OXA48 D3 transformed with pCR2.1_OXA48 0.5
D3+pCR2.1_OXA232 D3 transformed with pCR2.1_OXA232 0.5
D3-cirA-mutant+pCR2.1_NDM1 D3-cirA-mutant transformed with pCR2.1_NDM1 >256
D3-cirA-mutant+pCR2.1_KPC2 D3-cirA-mutant transformed with pCR2.1_KPC2 4
D3-cirA-mutant+pCR2.1_IMP4 D3-cirA-mutant transformed with pCR2.1_IMP4 1
D3-cirA-mutant+pCR2.1_OXA48 D3-cirA-mutant transformed with pCR2.1_OXA48 1
D3-cirA-mutant+pCR2.1_OXA232 D3-cirA-mutant transformed with pCR2.1_OXA232 1
AR8416-1+pCR2.1_NDM1 AR8416-1 transformed with pCR2.1_NDM1 >256
AR8416-1+pCR2.1_KPC2 AR8416-1 transformed with pCR2.1_KPC2 1
AR8416-1+pCR2.1_IMP4 AR8416-1 transformed with pCR2.1_IMP4 0.25
AR8416-1+pCR2.1_OXA48 AR8416-1 transformed with pCR2.1_OXA48 0.5
AR8416-1+pCR2.1_OXA232 AR8416-1 transformed with pCR2.1_OXA232 0.25
a

MIC, minimum inhibitory concentration.