Variable brain phenotype primarily affects the brainstem and cerebellum in patients with osteogenesis imperfecta caused by recessive WNT1 mutations. Issue 6 (15th December 2015) - Aldinger, Kimberly A; Mendelsohn, Nancy J; Chung, Brian HY; Zhang, Wenjuan; Cohn, Daniel H; Fernandez, Bridget; Alkuraya, Fowzan S; Dobyns, William B; Curry, Cynthia J