Age of MG onset was positively correlated with dBP (r = 0.46, p = 0.028), MBP (r = 0.47, p = 0.023), and sympathetic overactivation parameters such as delta LF/HF-sBP (r = 0.38, p = 0.028), LFnu-sBP (r = 0.44, p = 0.035), LF-sBP (r = 0.47, p = 0.024), and TPRI (r = 0.41, p = 0.049). This evidence concerns the gene MBP and myasthenia gravis.