OPA1 and pulmonary hypertension, primary, 1: The oligomerisation of Mff, Mid49 and Mid51 rather than that of Mfn1, Mfn2 and OPA1 in the gastric epithelial cells of PHT patients was slightly increased, and the oligomeric states of Mff, Mid49, Mid51 and Mfn1 were not modulated by PX‐478 treatment in SGC7901 xenograft mouse models.