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. 2021 Jul 12;14:2657–2666. doi: 10.2147/IDR.S314490

Table 3.

Chromosomal Mutations and Insertion Sequences (IS) in Polymyxin-Resistant K. pneumoniae Strains

Site Isolate mgrB phoP PhoQ pmrA pmrB crrA crrB
Hospital 5 Kpn1 ISkpn14 + + + + + Fr at16L
Hospital 4 Kpn2 ISkpn14 + + + + +
Hospital 6 Kpn3 ISkpn14 + + + +
Hospital 5 Kpn4 ISkpn14 + + + + + +
Hospital 6 Kpn5 + + + M66I + + +
Hospital 3 Kpn6 W47R + + + + + +
Hospital 6 Kpn7 ISkpn14 + + + + + +
Hospital 6 Kpn8 ISkpn5-like + + + + - -
Hospital 6 Kpn9 ISkpn5-like + + + + + -
Hospital 6 Kpn10 ISkpn14 + + + + - -
Hospital 6 Kpn11 ISkpn14 + + + + + +

Abbreviations: Fr, frameshift, +, presence of PCR product and no change in the nucleotide/amino acid sequences; −, absence of PCR product.