A novel COL3A1 gene variant associated with sudden death due to spontaneous pneumothorax.

Spontaneous pneumothorax (SP) is a condition defined by abnormal gas accumulation in the chest cavity. Mutations of the collagen type III alpha 1 chain, COL3A1 gene, are primarily linked to vascular Ehlers-Danlos syndrome (vEDS); however, they can also contribute to structural changes in the tissue, like bullae of the lungs. In this case report, we present a young, thinly built boy who died due to a spontaneous pneumothorax. Post-mortem genetic testing revealed a novel COL3A1 mutation, likely contributing to the pathogenic events underlying death due to spontaneous pneumothorax. We recommend implementing genetic testing of correlative or causative genes in the context of SP.