CALB2 and Miyoshi myopathy: As shown in Fig. 3, the median values of calretinin in serum and plasma of MM patients were significantly higher than in blood samples from healthy controls (0.84 vs. 0.20 ng/ml; p < 0.0001) or from asbestos-exposed workers (0.84 vs. 0.33 ng/ml; p < 0.0001).