We thank Drs Fu and Jinnah for pointing out the typographical errors, and we will happily address each of the points raised in their letter.
First, as noted, the G500>T nucleotide change in exon 7 of the HPRT gene was correctly listed in the discussion and pedigree but in the “Abstract,” “Results,” and “Figure 2” legend, the mutation was mistakenly listed as G550>T.
Next, we have deleted the level for urinary uric acid.
Sarafoglou K, Nyhan WL. Different Phenotypes Among Lesch-Nyhan Variants: Clinical Reality or Limitation of Ascertainment?—Reply. Arch Neurol. 2011;68(2):264-271. doi:10.1001/archneurol.2010.361