The addition of TLR4 inhibitor peptide VIPER resulted in lower proliferative responses than the CP7 control peptide in all BIA-ALCL cells stimulated with LPS and this was significant in most BIA-ALCL cells (p < 0.05), except for patient numbers 1713 (p = 0.4253) and 1802 (p = 0.2546) (Figure 5). Here, TLR4 is linked to anaplastic large cell lymphoma.