APOB and Gerstmann syndrome: There was a significant difference (P<0.001) in the concentration of UCB between GS patients (33±10 μmol/L) and control participants (9±3 μmol/L).52 Data of UCB concentrations, blood biochemistry, and body mass in Gunn and Wistar rats were also published previously.54 HDL‐C levels in Gunn rats were significantly lower than those in Wistar rats (P<0.001); however, no data were available on apo A1 or apo B levels.54 UCB concentrations were also significantly elevated in Gunn rats (106±26 μmol/L) compared with Wistar control (0.57±0.19 μmol/L).54