BDNF and spindle cell hemangioma: In SCH patients during pregnancy, the level of BDNF in newborn umbilical cord blood is positively correlated with the NBNA total score within 3 days of birth (r = 0.56, p < 0.001), as well as behavior capacity (r = 0.45, p < 0.001), active muscle tension (r = 0.52, p < 0.001), and general assessment (r = 0.35, p < 0.01) of newborns.