IDR-HH2 is an immunomodulatory peptide with the ability to modulate the host cytokine/chemokine environment. IDR-HH2 can promote the adhesion of monocytes and THP-1 cells to fibronectin. Additionally, IDR-HH2 possesses antibacterial activity, inhibiting the activity of both P. aeruginosa and S. aureus with MIC values of 75 µg/mL and 38 µg/mL, respectively.