PRKAR1A and myxoma: The immunohistochemistry results showed consistent results that the average expression levels of KIF1C and PRKAR1A in myxoma tissues with KIF1C variations (c.772 T > G, c.899 A > T, and c.352 A > T) were decreased by 42.37% and 35.71%, respectively, relative to the myxoma tissues without KIF1C variations (Fig. 2g, h).