ERBB2 and Miyoshi myopathy: Notably, the levels for ERBB2/HER2 mRNA in the pooled set of 766 MM patients (Mean ± SEM = 7.71 ± 0.03) was significantly higher than the levels for ERBB1 mRNA (Mean ± SEM = 4.08 ± 0.04; t-test, p < 0.0001) or ERBB3 mRNA (Mean ± SEM = 4.09 ± 0.03; p < 0.0001).