Molgramostim Nebulizer Solution Expanded Access Program Protocol

Summary

Autoimmune pulmonary alveolar proteinosis (aPAP) is a rare disorder in which a material called surfactant builds up in the lungs and makes it hard to breathe. In addition to shortness of breath, people with aPAP can experience persistent cough, overwhelming fatigue, unintentional changes in weight, chest or back pain, suddenly feeling out of shape, and general discomfort. Currently, there are no approved medications for aPAP in the United States, but the symptoms of aPAP can be treated with whole lung lavage (WLL). WLL is an invasive procedure that temporarily removes surfactant, and it can result in serious consequences like trauma to the lung, a collapsed lung, and prolonged requirement for artificial ventilation. Savara is studying an investigational drug called molgramostim nebulizer solution to see if it activates the cells that help clear surfactant from the lungs, which improves oxygen transfer from the lungs to the bloodstream. Molgramostim nebulizer solution is administered by inhalation using a hand-held nebulizer. In clinical trials, molgramostim nebulizer solution has shown improvements in gas exchange and patient reported outcomes. This expanded access program will make molgramostim nebulizer solution available to adult patients with diagnosed aPAP. Access must be obtained through the treating physician. Patients will dose molgramostim nebulizer solution 300 micrograms (mcg) once daily and be followed by their physician every 3 months to assess their clinical status and report any adverse events.

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Publications

• Background Bogunovic M, Ginhoux F, Helft J, Shang L, Hashimoto D, Greter M, Liu K, Jakubzick C, Ingersoll MA, Leboeuf M, Stanley ER, Nussenzweig M, Lira SA, Randolph GJ, Merad M. Origin of the lamina propria dendritic cell network. Immunity. 2009 Sep 18;31(3):513-25. doi: 10.1016/j.immuni.2009.08.010. Epub 2009 Sep 10.
• Background Hamilton JA. Colony-stimulating factors in inflammation and autoimmunity. Nat Rev Immunol. 2008 Jul;8(7):533-44. doi: 10.1038/nri2356.
• Background Inaba K, Inaba M, Romani N, Aya H, Deguchi M, Ikehara S, Muramatsu S, Steinman RM. Generation of large numbers of dendritic cells from mouse bone marrow cultures supplemented with granulocyte/macrophage colony-stimulating factor. J Exp Med. 1992 Dec 1;176(6):1693-702. doi: 10.1084/jem.176.6.1693.
• Background Khan A, Agarwal R. Pulmonary alveolar proteinosis. Respir Care. 2011 Jul;56(7):1016-28. doi: 10.4187/respcare.01125. Epub 2011 Apr 15.
• Background Kumar A, Abdelmalak B, Inoue Y, Culver DA. Pulmonary alveolar proteinosis in adults: pathophysiology and clinical approach. Lancet Respir Med. 2018 Jul;6(7):554-565. doi: 10.1016/S2213-2600(18)30043-2. Epub 2018 Feb 1.
• Background McCarthy C, Avetisyan R, Carey BC, Chalk C, Trapnell BC. Prevalence and healthcare burden of pulmonary alveolar proteinosis. Orphanet J Rare Dis. 2018 Jul 31;13(1):129. doi: 10.1186/s13023-018-0846-y.
• Background McCarthy C, Carey BC, Trapnell BC. Autoimmune Pulmonary Alveolar Proteinosis. Am J Respir Crit Care Med. 2022 May 1;205(9):1016-1035. doi: 10.1164/rccm.202112-2742SO.
• Background Metcalf D. The molecular biology and functions of the granulocyte-macrophage colony-stimulating factors. Blood. 1986 Feb;67(2):257-67.
• Background Park LS, Friend D, Gillis S, Urdal DL. Characterization of the cell surface receptor for human granulocyte/macrophage colony-stimulating factor. J Exp Med. 1986 Jul 1;164(1):251-62. doi: 10.1084/jem.164.1.251.
• Background Trapnell BC, Carey BC, Uchida K, Suzuki T. Pulmonary alveolar proteinosis, a primary immunodeficiency of impaired GM-CSF stimulation of macrophages. Curr Opin Immunol. 2009 Oct;21(5):514-21. doi: 10.1016/j.coi.2009.09.004. Epub 2009 Sep 30.
• Background Trapnell BC, Nakata K, Bonella F, Campo I, Griese M, Hamilton J, Wang T, Morgan C, Cottin V, McCarthy C. Pulmonary alveolar proteinosis. Nat Rev Dis Primers. 2019 Mar 7;5(1):16. doi: 10.1038/s41572-019-0066-3.
• Background Trapnell BC, Inoue Y, Bonella F, Morgan C, Jouneau S, Bendstrup E, Campo I, Papiris SA, Yamaguchi E, Cetinkaya E, Ilkovich MM, Kramer MR, Veltkamp M, Kreuter M, Baba T, Ganslandt C, Tarnow I, Waterer G, Jouhikainen T; IMPALA Trial Investigators. Inhaled Molgramostim Therapy in Autoimmune Pulmonary Alveolar Proteinosis. N Engl J Med. 2020 Oct 22;383(17):1635-1644. doi: 10.1056/NEJMoa1913590. Epub 2020 Sep 7.

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