Abstract: The present invention relates to the use of human anti-inflammatory peptides in the inhalatory treatment of inflammatory pulmonary diseases. The invention in particular relates to the use of vasoactive intestinal peptide, C-type natriuretic peptide, B-type natriuretic peptide, pituitary adenylate cyclase-activating peptide, adrenomedullin, alpha-melanocyte stimulating hormone, relaxin and Interferon gamma for said purposes. Advantageous features of an aerosol containing such a human anti-inflammatory peptide and a method for producing said aerosol are disclosed. The present invention further relates to a kit for inhalatory treatment of inflammatory pulmonary diseases. One aspect relates to treatment of CoViD-19 related ARDS.

Abstract: Checkpoint inhibitor-induced pneumonitis (CIP) is characterized clinically by dyspnea, cough and tachypnea. Hypoxia results from a lymphocyte-dominated alveolitis leading to ground glass opacities and consolidations observed by CT scan. Histological findings include lymphocytic infiltrates, granuloma formation and eosinophilic accumulation. In the management of CIP, systemic administration of steroids such as methylprednisolone is the standard therapy. Moreover, CIP in most cases leads to discontinuation of checkpoint inhibitory therapy and steroids limit the therapeutic effect of checkpoint inhibitors resulting in progression of the underlying malignant disease. Therefore, there is a need of other therapeutic options in CIP that ideally could abrogate the alveolar inflammation induced by checkpoint inhibitors without affecting the systemic effect on the immune system.