GH1 and autosomal recessive polycystic kidney disease: Although the small sample size precludes statistical analysis, it is interesting to note that the ARPKD subjects who were receiving growth hormone (n = 4) at baseline had lower annual change in height z-score (median −0.038) compared with those with A/H/D (n = 4, median 0.097) or OU (n = 6, median 0.034) (Table 1).